HEF4794B 8-stage shift-and-store register LED driver Rev. 9 -- 7 November 2018 Product data sheet 1. General description The HEF4794B is an 8-stage serial shift register. It has a storage latch associated with each stage for strobing data from the serial input (D) to the parallel LED driver outputs (QP0 to QP7). Data is shifted on the positive-going clock (CP) transitions. The data in each shift register stage is transferred to the storage register when the strobe input (STR) is HIGH. Data in the storage register appears at the outputs whenever the output enable input (OE) signal is HIGH. Two serial outputs (QS1 and QS2) are available for cascading a number of HEF4794B devices. Serial data is available at QS1 on positive-going clock edges to allow high-speed operation in cascaded systems with a fast clock rise time. The same serial data is available at QS2 on the next negative going clock edge. This is used for cascading HEF4794B devices when the clock has a slow rise time. It operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS (usually ground). Unused inputs must be connected to VDD, VSS, or another input. 2. Features and benefits * * * * * Fully static operation 5 V, 10 V, and 15 V parametric ratings Standardized symmetrical output characteristics Specified from -40 C to +85 C and -40 C to +125 C Complies with JEDEC standard JESD 13-B 3. Ordering information Table 1. Ordering information All types operate from -40 C to +125 C. Type number HEF4794BT Package Name Description Version SO16 plastic small outline package; 16 leads; body width 3.9 mm SOT109-1 HEF4794B Nexperia 8-stage shift-and-store register LED driver 4. Functional diagram 2 3 1 CP STR D OE QS1 9 QS2 10 QP0 4 D QP1 5 CP QP2 6 QP3 7 QP4 14 QP5 13 QP6 12 QP7 11 STR OE 2 9 1 8-BIT STORAGE REGISTER 15 OPEN-DRAIN OUTPUTS 4 QP0 15 Fig. 1. 001aaf111 Logic symbol Fig. 2. STAGE 0 D D D 5 QP1 6 QP2 7 QP3 14 QP4 13 QP5 12 QP6 QS2 QS1 11 QP7 001aag798 Functional diagram STAGES 1 TO 6 Q 10 8-STAGE SHIFT REGISTER 3 STAGE 7 Q CP D Q QS1 CP FF 0 CP D FF 7 CP Q QS2 LE LATCH D Q D Q LE LE LATCH 0 LATCH 7 STR OE QP0 Fig. 3. QP1 QP2 QP3 QP4 QP5 QP6 QP7 aaa-029301 Logic diagram HEF4794B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 9 -- 7 November 2018 (c) Nexperia B.V. 2018. All rights reserved 2 / 14 HEF4794B Nexperia 8-stage shift-and-store register LED driver 5. Pinning information 5.1. Pinning HEF4794B STR 1 16 VDD D 2 15 OE CP 3 14 QP4 QP0 4 13 QP5 QP1 5 12 QP6 QP2 6 11 QP7 QP3 7 10 QS2 VSS 8 9 QS1 001aag800 Fig. 4. Pin configuration 5.2. Pin description Table 2. Pin description Symbol Pin Description D 2 serial input QP0 to QP7 4, 5, 6, 7, 14, 13, 12, 11 parallel output (open-drain) QS1 9 serial output QS2 10 serial output CP 3 clock input STR 1 strobe input OE 15 output enable input VDD 16 supply voltage VSS 8 ground (0 V) HEF4794B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 9 -- 7 November 2018 (c) Nexperia B.V. 2018. All rights reserved 3 / 14 HEF4794B Nexperia 8-stage shift-and-store register LED driver 6. Functional description Table 3. Function table H = HIGH voltage level; L = LOW voltage level; X = don't care; Z = high-impedance OFF-state; = LOW-to-HIGH clock transition; = HIGH-to-LOW clock transition. Input Parallel output Serial output CP OE STR D QP0 QPn QS1[1] QS2[2] L X X Z Z Q6S no change L X X Z Z n.c. Q7S H L X no change no change Q6S no change H H L Z QPn - 1 Q6S no change H H H L QPn - 1 Q6S no change H H H no change no change no change Q7S [1] [2] Q6S = the data in register stage 6 before the LOW to HIGH clock transition. Q7S = the data in register stage 7 before the HIGH to LOW clock transition. clock input data input strobe input output enable input internal Q0S (FF0) Z-state QP0 output internal Q6S (FF6) Z-state QP6 output serial QS1 output serial QS2 output Fig. 5. 001aag801 Timing diagram HEF4794B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 9 -- 7 November 2018 (c) Nexperia B.V. 2018. All rights reserved 4 / 14 HEF4794B Nexperia 8-stage shift-and-store register LED driver 7. Limiting values Table 4. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol Parameter VDD supply voltage IIK input clamping current VI input voltage IOK output clamping current II input leakage current IO output current Conditions VI < -0.5 V or VI > VDD + 0.5 V Min Max Unit -0.5 +18 V - 10 mA -0.5 VDD + 0.5 QSn outputs; VO < -0.5 V or VO > VDD + 0.5 V - 10 V mA QPn outputs; VO < -0.5 V - 40 mA - 10 mA QSn outputs - 10 mA QPn outputs - 40 mA Tstg storage temperature -65 +150 C Tamb ambient temperature -40 +125 C Ptot total power dissipation Tamb = -40 C to +125 C - 500 mW P power dissipation per output - 100 mW SO16 package [1] [1] For SO16 package: Ptot derates linearly with 8 mW/K above 70 C. 8. Recommended operating conditions Table 5. Recommended operating conditions Symbol Parameter Conditions Min Max Unit VDD supply voltage 3 15 V VI input voltage 0 VDD V Tamb ambient temperature in free air -40 +125 C t/V input transition rise and fall rate VDD = 5 V - 3.75 s/V VDD = 10 V - 0.5 s/V VDD = 15 V - 0.08 s/V HEF4794B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 9 -- 7 November 2018 (c) Nexperia B.V. 2018. All rights reserved 5 / 14 HEF4794B Nexperia 8-stage shift-and-store register LED driver 9. Static characteristics Table 6. Static characteristics VSS = 0 V; VI = VSS or VDD; unless otherwise specified. Symbol Parameter VIH VIL VOH VOL HIGH-level input voltage Conditions LOW-level output voltage IOL HIGH-level output current LOW-level output current II input leakage current IOZ OFF-state output current IDD CI supply current input capacitance HEF4794B Product data sheet Tamb = 25 C Tamb = 85 C Tamb = 125 C Unit Max Min Max Min Max Min Max 3.5 - 3.5 - 3.5 - 3.5 - V 10 V 7.0 - 7.0 - 7.0 - 7.0 - V 15 V 11.0 - 11.0 - 11.0 - 11.0 - V 5V - 1.5 - 1.5 - 1.5 - 1.5 V 10 V - 3.0 - 3.0 - 3.0 - 3.0 V 15 V - 4.0 - 4.0 - 4.0 - 4.0 V 5V 4.95 - 4.95 - 4.95 - 4.95 - V 10 V 9.95 - 9.95 - 9.95 - 9.95 - V 15 V 14.95 - 14.95 - 14.95 - 14.95 - V 5V - 0.05 - 0.05 - 0.05 - 0.05 V 10 V - 0.05 - 0.05 - 0.05 - 0.05 V 15 V - 0.05 - 0.05 - 0.05 - 0.05 V 5V - 0.75 - 0.75 - 1.5 - 1.5 V 10 V - 0.75 - 0.75 - 1.5 - 1.5 V 15 V - 0.75 - 0.75 - 1.5 - 1.5 V VO = 2.5 V 5V - -1.7 - -1.4 - -1.1 - -1.1 mA VO = 4.6 V 5V - -0.64 - -0.5 - -0.36 - -0.36 mA VO = 9.5 V 10 V - -1.6 - -1.3 - -0.9 - -0.9 mA VO = 13.5 V 15 V - -4.2 - -3.4 - -2.4 - -2.4 mA |IO| < 1 A QSn outputs; |IO| < 1 A QSn outputs; |IO| < 1 A QPn outputs; |IO| < 20 mA IOH Tamb = -40 C Min LOW-level input |IO| < 1 A voltage HIGH-level output voltage VDD 5V QSn outputs QSn outputs VO = 0.4 V 5V 0.64 - 0.5 - 0.36 - 0.36 - mA VO = 0.5 V 10 V 1.6 - 1.3 - 0.9 - 0.9 - mA VO = 1.5 V 15 V 4.2 - 3.4 - 2.4 - 2.4 - mA 15 V - 0.1 - 0.1 - 1.0 - 1.0 A QPn output is HIGH; VO = 15 V 5V - 2 - 2 - 15 - 15 A 10 V - 2 - 2 - 15 - 15 A 15 V - 2 - 2 - 15 - 15 A IO = 0 A 5V - 5 - 5 - 150 - 150 A 10 V - 10 - 10 - 300 - 300 A 15 V - 20 - 20 - 600 - 600 A - - - - - 7.5 - - - pF All information provided in this document is subject to legal disclaimers. Rev. 9 -- 7 November 2018 (c) Nexperia B.V. 2018. All rights reserved 6 / 14 HEF4794B Nexperia 8-stage shift-and-store register LED driver 10. Dynamic characteristics Table 7. Dynamic characteristics VSS = 0 V; Tamb = 25 C unless otherwise specified. For test circuit, see Fig. 10. Symbol Parameter Conditions VDD tPHL HIGH to LOW propagation delay CP to QS1; see Fig. 6 5V CP to QS2; see Fig. 6 tPLH LOW to HIGH propagation delay CP to QS2; see Fig. 6 tPZL OFF-state to LOW propagation delay CP to QPn; see Fig. 6 STR to QPn; see Fig. 7 tPLZ LOW to OFF-state propagation delay CP to QPn; see Fig. 6 STR to QPn; see Fig. 7 ten tdis tt tW enable time disable time transition time pulse width QS1, QS2; see Fig. 6 CP LOW and HIGH; see Fig. 6 STR HIGH; see Fig. 7 HEF4794B Product data sheet Max Unit - 160 320 ns 65 130 ns - 15 V 37 ns + (0.16 ns/pF)CL - 45 90 ns 5V 92 ns + (0.55 ns/pF)CL - 120 240 ns 10 V 39 ns + (0.23 ns/pF)CL - 50 100 ns 15 V 32 ns + (0.16 ns/pF)CL - 40 80 ns - 130 260 ns [1] 102 ns + (0.55 ns/pF)CL 10 V 44 ns + (0.23 ns/pF)CL - 55 110 ns 15 V 32 ns + (0.16 ns/pF)CL - 40 80 ns 5V 102 ns + (0.55 ns/pF)CL - 130 260 ns 10 V 49 ns + (0.23 ns/pF)CL - 60 120 ns 15 V 37 ns + (0.16 ns/pF)CL - 45 90 ns 5V - 240 480 ns 10 V - 80 160 ns 15 V - 55 110 ns 5V - 140 280 ns 10 V - 70 140 ns 15 V - 55 110 ns 5V - 170 340 ns 10 V - 75 150 ns 15 V - 60 120 ns 5V - 100 200 ns 10 V - 40 100 ns 15 V - 35 70 ns - 100 200 ns 10 V - 55 110 ns 15 V - 50 100 ns 5V OE to QPn; see Fig. 8 Typ 53 ns + (0.23 ns/pF)CL 5V OE to QPn; see Fig. 8 [1] 132 ns + (0.55 ns/pF)CL Min 10 V 5V CP to QS1; see Fig. 6 Extrapolation formula [2] - 80 160 ns 10 V [2] - 40 80 ns 15 V - 30 60 ns 5 V [1][3] 35 ns + (1.00 ns/pF)CL - 85 170 ns 10 V 19 ns + (0.42 ns/pF)CL - 40 80 ns 15 V 16 ns + (0.28 ns/pF)CL - 30 60 ns 5V 60 30 - ns 10 V 30 15 - ns 15 V 24 12 - ns 5V 80 40 - ns 10 V 60 30 - ns 15 V 24 12 - ns All information provided in this document is subject to legal disclaimers. Rev. 9 -- 7 November 2018 (c) Nexperia B.V. 2018. All rights reserved 7 / 14 HEF4794B Nexperia 8-stage shift-and-store register LED driver Symbol Parameter Conditions tsu set-up time D to CP; see Fig. 9 5 V Extrapolation formula VDD 10 V 15 V th fclk(max) [1] [2] [3] maximum clock frequency CP; see Fig. 6 Typ Max Unit 60 30 - ns 20 10 - ns 15 5 - ns +5 -15 - ns 10 V 20 5 - ns 15 V 20 5 - ns 5V 5 10 - MHz 10 V 11 22 - MHz 15 V 14 28 - MHz D to CP; see Fig. 9 5 V hold time Min The typical values of the propagation delay and transition times are calculated from the extrapolation formulas shown (CL in pF). ten is the same as tPZL and tdis is the same as tPLZ tt is the same as tTLH and tTHL Table 8. Dynamic power dissipation PD can be calculated from the formulas shown. VSS = 0 V; tr = tf 20 ns; Tamb = 25 C. Symbol Parameter PD VDD dynamic power dissipation 5 V 10 V 15 V Typical formula Where PD = 1 200 x fi + (fo x CL) x 2 VDD 2 VDD W fi = input frequency in MHz; fo = output frequency in MHz; PD = 5 550 x fi + (fo x CL) x W CL = output load capacitance in pF; 2 PD = 15 000 x fi + (fo x CL) x VDD W (fo x CL) = sum of the outputs; VDD = supply voltage in V. 10.1. Waveforms and test circuit 1/fclk(max) VI VM CP input VSS VDD QPn output VOL VOH tW tW tPLZ tPZL VY VX tPLH tPHL 90 % VM QS1 output VOL VOH 10 % tTHL tTLH tPLH tPHL 90 % VM QS2 output VOL 10 % tTLH tTHL 001aag222 Parallel output measurement points are given in Table 9. VOL and VOH are typical output voltage levels that occur with the output load. Fig. 6. Propagation delay clock (CP) to output (QPn, QS1, QS2), clock pulse width and maximum clock frequency HEF4794B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 9 -- 7 November 2018 (c) Nexperia B.V. 2018. All rights reserved 8 / 14 HEF4794B Nexperia 8-stage shift-and-store register LED driver Table 9. Measurement points Supply Input Output VDD VM VM VX VY 5 V to 15 V 0.5VDD 0.5VDD 0.1VO 0.9VO VI VM CP input VSS VI STR input VM VSS tW tPLZ VDD tPZL VY QPn output VX VOL 001aag802 Measurement points are given in Table 9. VOL is the typical output voltage level that occurs with the output load. Fig. 7. Strobe (STR) to output (QPn) propagation delays and the strobe pulse width VI OE input VM VSS VDD output LOW to OFF-state OFF-state to LOW VOL tPLZ tPZL VY VX outputs enabled outputs disabled outputs enabled 001aag803 Measurement points are given in Table 9. VOL is the typical output voltage level that occurs with the output load. Fig. 8. Enable and disable times for input OE VI CP input VM VSS tsu VI th tsu th VM D input VSS VDD QPn output VOL 001aag805 Measurement points are given in Table 9. The shaded areas indicate when the input is permitted to change for predictable output performance. VOL is the typical output voltage level that occurs with the output load. Fig. 9. Set-up and hold times for the data input (D) HEF4794B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 9 -- 7 November 2018 (c) Nexperia B.V. 2018. All rights reserved 9 / 14 HEF4794B Nexperia 8-stage shift-and-store register LED driver VI 90 % input pulse VSS 10 % tr tf VEXT VDD G VI VO DUT RL CL RT 001aag804 Test data is given in Table 10. Definitions for test circuit: DUT - Device Under Test. RL = Load resistance. CL = load capacitance. RT = Termination resistance should be equal to output impedance of Zo of the pulse generator. VEXT = External voltage for measuring switching times. Fig. 10. Test circuit for measuring switching times Table 10. Test data Supply Input VEXT Load VDD VI tr, tf tPLZ, tPZL tPLH, tPHL CL RL 5 V to 15 V VDD 20 ns VDD open 50 pF 1 k 11. Application information VDD VDD QP0 HEF4794B D OE PWM dimmer input STR CP QP7 S2 QP0 QP7 S2 HEF4794B D OE STR CP CONTROL AND SYNC CIRCUITRY 001aag806 data clock from remote control panel Fig. 11. Application example: serial-to-parallel data converting LED drivers HEF4794B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 9 -- 7 November 2018 (c) Nexperia B.V. 2018. All rights reserved 10 / 14 HEF4794B Nexperia 8-stage shift-and-store register LED driver 12. Package outline SO16: plastic small outline package; 16 leads; body width 3.9 mm SOT109-1 D E A X c y HE v M A Z 16 9 Q A2 A (A 3) A1 pin 1 index Lp 1 L 8 e w M bp 0 2.5 detail X 5 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y Z (1) mm 1.75 0.25 0.10 1.45 1.25 0.25 0.49 0.36 0.25 0.19 10.0 9.8 4.0 3.8 1.27 6.2 5.8 1.05 1.0 0.4 0.7 0.6 0.25 0.25 0.1 0.7 0.3 0.01 0.019 0.0100 0.39 0.014 0.0075 0.38 0.16 0.15 0.039 0.016 0.028 0.020 inches 0.010 0.057 0.069 0.004 0.049 0.05 0.244 0.041 0.228 0.01 0.01 0.028 0.004 0.012 o 8 o 0 Note 1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. REFERENCES OUTLINE VERSION IEC JEDEC SOT109-1 076E07 MS-012 JEITA EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-19 Fig. 12. Package outline SOT109-1 (SO16) HEF4794B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 9 -- 7 November 2018 (c) Nexperia B.V. 2018. All rights reserved 11 / 14 HEF4794B Nexperia 8-stage shift-and-store register LED driver 13. Revision history Table 11. Revision history Document ID Release date Data sheet status Change notice Supersedes HEF4794B v.9 20181107 Product data sheet - HEF4794B v.8 Modifications: * * * The format of this data sheet has been redesigned to comply with the identity guidelines of Nexperia. Legal texts have been adapted to the new company name where appropriate. Fig. 3 and Fig. 5 corrected. HEF4794B v.8 20160404 Modifications: * HEF4794B v.7 20111116 Modifications: * * HEF4794B v.6 20100901 Product data sheet - HEF4794B v.5 HEF4794B v.5 20100402 Product data sheet - HEF4794B v.4 HEF4794B v.4 20091222 Product data sheet - HEF4794B v.3 HEF4794B v.3 20080812 Product data sheet - HEF4794B v.2 HEF4794B v.2 19990630 Product specification - HEF4794B v.1 HEF4794B v.1 19940701 Product specification - - HEF4794B Product data sheet Product data sheet - HEF4794B v.7 Type number HEF4794BP (SOT38-4) removed. Product data sheet - HEF4794B v.6 Section Applications removed *Table 6: * IOH minimum values changed to maximum * added the unit pF for CI All information provided in this document is subject to legal disclaimers. Rev. 9 -- 7 November 2018 (c) Nexperia B.V. 2018. All rights reserved 12 / 14 HEF4794B Nexperia 8-stage shift-and-store register LED driver 14. Legal information injury, death or severe property or environmental damage. Nexperia and its suppliers accept no liability for inclusion and/or use of Nexperia products in such equipment or applications and therefore such inclusion and/or use is at the customer's own risk. Data sheet status Quick reference data -- The Quick reference data is an extract of the product data given in the Limiting values and Characteristics sections of this document, and as such is not complete, exhaustive or legally binding. Document status [1][2] Product status [3] Definition Objective [short] data sheet Development This document contains data from the objective specification for product development. Preliminary [short] data sheet Qualification This document contains data from the preliminary specification. Product [short] data sheet Production This document contains the product specification. [1] [2] [3] Please consult the most recently issued document before initiating or completing a design. The term 'short data sheet' is explained in section "Definitions". The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status information is available on the internet at https://www.nexperia.com. Definitions Draft -- The document is a draft version only. The content is still under internal review and subject to formal approval, which may result in modifications or additions. Nexperia does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. Short data sheet -- A short data sheet is an extract from a full data sheet with the same product type number(s) and title. A short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. For detailed and full information see the relevant full data sheet, which is available on request via the local Nexperia sales office. In case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail. Product specification -- The information and data provided in a Product data sheet shall define the specification of the product as agreed between Nexperia and its customer, unless Nexperia and customer have explicitly agreed otherwise in writing. In no event however, shall an agreement be valid in which the Nexperia product is deemed to offer functions and qualities beyond those described in the Product data sheet. Disclaimers Limited warranty and liability -- Information in this document is believed to be accurate and reliable. However, Nexperia does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. Nexperia takes no responsibility for the content in this document if provided by an information source outside of Nexperia. In no event shall Nexperia be liable for any indirect, incidental, punitive, special or consequential damages (including - without limitation - lost profits, lost savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on tort (including negligence), warranty, breach of contract or any other legal theory. Notwithstanding any damages that customer might incur for any reason whatsoever, Nexperia's aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance with the Terms and conditions of commercial sale of Nexperia. Right to make changes -- Nexperia reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof. Suitability for use -- Nexperia products are not designed, authorized or warranted to be suitable for use in life support, life-critical or safety-critical systems or equipment, nor in applications where failure or malfunction of an Nexperia product can reasonably be expected to result in personal HEF4794B Product data sheet Applications -- Applications that are described herein for any of these products are for illustrative purposes only. Nexperia makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Customers are responsible for the design and operation of their applications and products using Nexperia products, and Nexperia accepts no liability for any assistance with applications or customer product design. It is customer's sole responsibility to determine whether the Nexperia product is suitable and fit for the customer's applications and products planned, as well as for the planned application and use of customer's third party customer(s). Customers should provide appropriate design and operating safeguards to minimize the risks associated with their applications and products. Nexperia does not accept any liability related to any default, damage, costs or problem which is based on any weakness or default in the customer's applications or products, or the application or use by customer's third party customer(s). Customer is responsible for doing all necessary testing for the customer's applications and products using Nexperia products in order to avoid a default of the applications and the products or of the application or use by customer's third party customer(s). Nexperia does not accept any liability in this respect. Limiting values -- Stress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC 60134) will cause permanent damage to the device. Limiting values are stress ratings only and (proper) operation of the device at these or any other conditions above those given in the Recommended operating conditions section (if present) or the Characteristics sections of this document is not warranted. Constant or repeated exposure to limiting values will permanently and irreversibly affect the quality and reliability of the device. Terms and conditions of commercial sale -- Nexperia products are sold subject to the general terms and conditions of commercial sale, as published at http://www.nexperia.com/profile/terms, unless otherwise agreed in a valid written individual agreement. In case an individual agreement is concluded only the terms and conditions of the respective agreement shall apply. Nexperia hereby expressly objects to applying the customer's general terms and conditions with regard to the purchase of Nexperia products by customer. No offer to sell or license -- Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights. Export control -- This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from competent authorities. Non-automotive qualified products -- Unless this data sheet expressly states that this specific Nexperia product is automotive qualified, the product is not suitable for automotive use. It is neither qualified nor tested in accordance with automotive testing or application requirements. Nexperia accepts no liability for inclusion and/or use of non-automotive qualified products in automotive equipment or applications. In the event that customer uses the product for design-in and use in automotive applications to automotive specifications and standards, customer (a) shall use the product without Nexperia's warranty of the product for such automotive applications, use and specifications, and (b) whenever customer uses the product for automotive applications beyond Nexperia's specifications such use shall be solely at customer's own risk, and (c) customer fully indemnifies Nexperia for any liability, damages or failed product claims resulting from customer design and use of the product for automotive applications beyond Nexperia's standard warranty and Nexperia's product specifications. Translations -- A non-English (translated) version of a document is for reference only. The English version shall prevail in case of any discrepancy between the translated and English versions. Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. All information provided in this document is subject to legal disclaimers. Rev. 9 -- 7 November 2018 (c) Nexperia B.V. 2018. All rights reserved 13 / 14 HEF4794B Nexperia 8-stage shift-and-store register LED driver Contents 1. General description...................................................... 1 2. Features and benefits.................................................. 1 3. Ordering information....................................................1 4. Functional diagram.......................................................2 5. Pinning information......................................................3 5.1. Pinning.........................................................................3 5.2. Pin description............................................................. 3 6. Functional description................................................. 4 7. Limiting values............................................................. 5 8. Recommended operating conditions..........................5 9. Static characteristics....................................................6 10. Dynamic characteristics............................................ 7 10.1. Waveforms and test circuit........................................ 8 11. Application information............................................10 12. Package outline........................................................ 11 13. Revision history........................................................12 14. Legal information......................................................13 (c) Nexperia B.V. 2018. All rights reserved For more information, please visit: http://www.nexperia.com For sales office addresses, please send an email to: salesaddresses@nexperia.com Date of release: 7 November 2018 HEF4794B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 9 -- 7 November 2018 (c) Nexperia B.V. 2018. All rights reserved 14 / 14