74AHC138; 74AHCT138 3-to-8 line decoder/demultiplexer; inverting Rev. 03 -- 28 November 2007 Product data sheet 1. General description The 74AHC138; 74AHCT138 are high-speed Si-gate CMOS devices and are pin compatible with Low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard No. 7A. The 74AHC138; 74AHCT138 is a 3-to-8 line decoder/demultiplexer. It accepts three binary weighted address inputs (A0, A1 and A2) and, when enabled, provides eight mutually exclusive outputs (Y0 to Y7) that are LOW when selected. There are three enable inputs: two active LOW (E1 and E2) and one active HIGH (E3). Every output will be HIGH unless E1 and E2 are LOW and E3 is HIGH. This multiple enable function allows easy parallel expansion of the device to a 1-of-32 (5 lines to 32 lines) decoder with just four 74AHC138; 74AHCT138 devices and one inverter. The 74AHC138; 74AHCT138 can be used as an eight output demultiplexer by using one of the active LOW enable inputs as the data input and the remaining enable inputs as strobes. Unused enable inputs must be permanently tied to their appropriate active HIGH or LOW state. 2. Features Balanced propagation delays All inputs have Schmitt-trigger action Demultiplexing capability Multiple input enable for easy expansion Ideal for memory chip select decoding Inputs accepts voltages higher than VCC For 74AHC138 only: operates with CMOS input levels For 74AHCT138 only: operates with TTL input levels ESD protection: HBM JESD22-A114E exceeds 2000 V MM JESD22-A115-A exceeds 200 V CDM JESD22-C101C exceeds 1000 V Multiple package options Specified from -40 C to +85 C and from -40 C to +125 C 74AHC138; 74AHCT138 NXP Semiconductors 3-to-8 line decoder/demultiplexer; inverting 3. Ordering information Table 1. Ordering information Type number Package 74AHC138D Temperature range Name Description Version -40 C to +125 C SO16 plastic small outline package; 16 leads; body width 3.9 mm SOT109-1 -40 C to +125 C TSSOP16 plastic thin shrink small outline package; 16 leads; body width 4.4 mm SOT403-1 -40 C to +125 C DHVQFN16 plastic dual in-line compatible thermal-enhanced very thin quad flat package; no leads; 16 terminals; body 2.5 x 3.5 x 0.85 mm 74AHCT138D 74AHC138PW 74AHCT138PW 74AHC138BQ 74AHCT138BQ SOT763-1 4. Functional diagram DX 1 A0 1 Y0 A1 Y1 14 3 A2 Y2 13 Y3 12 E1 Y4 11 E2 Y5 10 E3 Y6 9 Y7 7 4 5 6 1 2 15 2 0 3 0 G 0 7 2 2 3 4 4 & 5 5 6 6 7 X/Y 15 14 1 13 2 12 3 1 1 2 2 4 3 11 4 10 4 9 5 7 0 6 & 5 6 EN 7 15 14 13 12 11 10 9 7 mna371 (a) mna370 Fig 1. Logic symbol (b) Fig 2. IEC logic symbol Y0 15 1 A0 Y1 14 2 A1 Y2 13 3 A2 Y3 12 Y4 11 Y5 10 Y6 9 Y7 7 3-to-8 DECODER 4 ENABLE EXITING E1 5 E2 6 E3 mna372 Fig 3. Functional diagram 74AHC_AHCT138_3 Product data sheet (c) NXP B.V. 2007. All rights reserved. Rev. 03 -- 28 November 2007 2 of 16 74AHC138; 74AHCT138 NXP Semiconductors 3-to-8 line decoder/demultiplexer; inverting 5. Pinning information A0 terminal 1 index area 16 VCC 5.1 Pinning 1 16 VCC A1 2 15 Y0 A1 2 15 Y0 A2 3 14 Y1 A2 3 14 Y1 13 Y2 E1 4 5 12 Y3 E3 6 11 Y4 Y7 7 10 Y5 GND 8 9 E2 5 E3 6 Y7 7 Y6 GND(1) 12 Y3 11 Y4 10 Y5 9 E2 13 Y2 138 Y6 138 8 4 GND E1 1 A0 001aad035 Transparent top view 001aad033 (1) The die substrate is attached to this pad using conductive die attach material. It can not be used as a supply pin or input. Fig 4. Pin configuration for SO16 and TSSOP16 Fig 5. Pin configuration for DHVQFN16 5.2 Pin description Table 2. Pin description Symbol Pin Description A0 1 address input A1 2 address input A2 3 address input E1 4 enable input (active LOW) E2 5 enable input (active LOW) E3 6 enable input (active HIGH) GND 8 ground (0 V) Y0 to Y7 15, 14, 13, 12, 11, 10, 9, 7 output VCC 16 supply voltage 74AHC_AHCT138_3 Product data sheet (c) NXP B.V. 2007. All rights reserved. Rev. 03 -- 28 November 2007 3 of 16 74AHC138; 74AHCT138 NXP Semiconductors 3-to-8 line decoder/demultiplexer; inverting 6. Functional description Function table [1] Table 3. Input Output E1 E2 E3 A0 A1 A2 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 H X X X X X H H H H H H H H X H X X X X H H H H H H H H X X L X X X H H H H H H H H L L H L L L L H H H H H H H L L H H L L H L H H H H H H L L H L H L H H L H H H H H L L H H H L H H H L H H H H L L H L L H H H H H L H H H L L H H L H H H H H H L H H L L H L H H H H H H H H L H L L H H H H H H H H H H H L [1] H = HIGH voltage level; L = LOW voltage level; X = don't care 7. Limiting values Table 4. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions VCC supply voltage VI input voltage IIK input clamping current VI < -0.5 V [1] IOK output clamping current VO < -0.5 V or VO > VCC + 0.5 V [1] IO output current VO = -0.5 V to (VCC + 0.5 V) Min Max Unit -0.5 +7.0 V -0.5 +7.0 V -20 - mA - 20 mA - 25 mA ICC supply current - 75 mA IGND ground current -75 - mA Tstg storage temperature -65 +150 C Ptot total power dissipation Tamb = -40 C to +125 C SO16 package [2] - 500 mW TSSOP16 package [3] - 500 mW DHVQFN16 package [4] - 500 mW [1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed. [2] Ptot derates linearly with 8 mW/K above 70 C. [3] Ptot derates linearly with 5.5 mW/K above 60 C. [4] Ptot derates linearly with 4.5 mW/K above 60 C. 74AHC_AHCT138_3 Product data sheet (c) NXP B.V. 2007. All rights reserved. Rev. 03 -- 28 November 2007 4 of 16 74AHC138; 74AHCT138 NXP Semiconductors 3-to-8 line decoder/demultiplexer; inverting 8. Recommended operating conditions Table 5. Recommended operating conditions Voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions 74AHC138 74AHCT138 Unit Min Typ Max Min Typ Max VCC supply voltage 2.0 5.0 5.5 4.5 5.0 5.5 V VI input voltage 0 - 5.5 0 - 5.5 V VO output voltage 0 - VCC 0 - VCC V Tamb ambient temperature -40 +25 +125 -40 +25 +125 C t/V input transition rise and fall rate VCC = 3.3 V 0.3 V - - 100 - - - ns/V VCC = 5.0 V 0.5 V - - 20 - - 20 ns/V 9. Static characteristics Table 6. Static characteristics Voltages are referenced to GND (ground = 0 V). Symbol Parameter 25 C Conditions -40 C to +85 C -40 C to +125 C Unit Min Typ Max Min Max Min Max VCC = 2.0 V 1.5 - - 1.5 - 1.5 - V VCC = 3.0 V 2.1 - - 2.1 - 2.1 - V VCC = 5.5 V 3.85 - - 3.85 - 3.85 - V VCC = 2.0 V - - 0.5 - 0.5 - 0.5 V VCC = 3.0 V - - 0.9 - 0.9 - 0.9 V VCC = 5.5 V - - 1.65 - 1.65 - 1.65 V HIGH-level VI = VIH or VIL output voltage IO = -50 A; VCC = 2.0 V 1.9 2.0 - 1.9 - 1.9 - V IO = -50 A; VCC = 3.0 V 2.9 3.0 - 2.9 - 2.9 - V IO = -50 A; VCC = 4.5 V 4.4 4.5 - 4.4 - 4.4 - V IO = -4.0 mA; VCC = 3.0 V 2.58 - - 2.48 - 2.4 - V IO = -8.0 mA; VCC = 4.5 V For type 74AHC138 VIH VIL VOH VOL HIGH-level input voltage LOW-level input voltage 3.94 - - 3.8 - 3.7 - V LOW-level VI = VIH or VIL output voltage IO = 50 A; VCC = 2.0 V - 0 0.1 - 0.1 - 0.1 V IO = 50 A; VCC = 3.0 V - 0 0.1 - 0.1 - 0.1 V IO = 50 A; VCC = 4.5 V - 0 0.1 - 0.1 - 0.1 V IO = 4.0 mA; VCC = 3.0 V - - 0.36 - 0.44 - 0.55 V IO = 8.0 mA; VCC = 4.5 V - - 0.36 - 0.44 - 0.55 V - - 0.1 - 1.0 - 2.0 A II input leakage current VI = 5.5 V or GND; VCC = 0 V or 5.5 V ICC supply current VI = VCC or GND; IO = 0 A; VCC = 5.5 V - - 4.0 - 40 - 80 A CI input capacitance - 3.0 10 - 10 - 10 pF 74AHC_AHCT138_3 Product data sheet (c) NXP B.V. 2007. All rights reserved. Rev. 03 -- 28 November 2007 5 of 16 74AHC138; 74AHCT138 NXP Semiconductors 3-to-8 line decoder/demultiplexer; inverting Table 6. Static characteristics ...continued Voltages are referenced to GND (ground = 0 V). Symbol Parameter 25 C Conditions -40 C to +85 C -40 C to +125 C Unit Min Typ Max Min Max Min Max For type 74AHCT138 VIH HIGH-level input voltage VCC = 4.5 V to 5.5 V 2.0 - - 2.0 - 2.0 - V VIL LOW-level input voltage VCC = 4.5 V to 5.5 V - - 0.8 - 0.8 - 0.8 V VOH HIGH-level VI = VIH or VIL; VCC = 4.5 V output voltage IO = -50 A 4.4 4.5 - 4.4 - 4.4 - V 3.94 - - 3.8 - 3.7 - V - 0 0.1 - 0.1 - 0.1 V - - 0.36 - 0.44 - 0.55 V - - 0.1 - 1.0 - 2.0 A IO = -8.0 mA VOL LOW-level VI = VIH or VIL; VCC = 4.5 V output voltage IO = 50 A IO = 8.0 mA II input leakage current VI = 5.5 V or GND; VCC = 0 V or 5.5 V ICC supply current VI = VCC or GND; IO = 0 A; VCC = 5.5 V - - 4.0 - 40 - 80 A ICC additional per input pin; supply current VI = VCC - 2.1 V; IO = 0 A; other pins at VCC or GND; VCC = 4.5 V to 5.5 V - - 1.35 - 1.5 - 1.5 mA CI input capacitance - 3.0 10 - 10 - 10 pF 74AHC_AHCT138_3 Product data sheet (c) NXP B.V. 2007. All rights reserved. Rev. 03 -- 28 November 2007 6 of 16 74AHC138; 74AHCT138 NXP Semiconductors 3-to-8 line decoder/demultiplexer; inverting 10. Dynamic characteristics Table 7. Dynamic characteristics GND = 0 V; For test circuit see Figure 8. Symbol Parameter 25 C Conditions -40 C to +85 C -40 C to +125 C Unit Min Typ[1] Max Min Max Min Max CL = 15 pF - 6.0 11.4 1.0 13.0 1.0 14.5 ns CL = 50 pF - 8.6 15.8 1.0 18.0 1.0 20.0 ns - 4.4 8.1 1.0 9.5 1.0 10.5 ns - 6.3 10.1 1.0 11.5 1.0 13.0 ns CL = 15 pF - 5.8 12.8 1.0 15.0 1.0 16.0 ns CL = 50 pF - 8.2 16.3 1.0 18.5 1.0 20.5 ns - 4.2 8.1 1.0 9.5 1.0 10.5 ns - 6.0 10.1 1.0 11.5 1.0 13.0 ns CL = 15 pF - 5.7 11.4 1.0 13.5 1.0 14.5 ns CL = 50 pF - 8.2 14.9 1.0 17.0 1.0 19.0 ns CL = 15 pF - 4.2 8.1 1.0 9.5 1.0 10.5 ns CL = 50 pF - 6.0 10.1 1.0 11.5 1.0 13.0 ns - 18.0 - - - - - pF For type 74AHC138 tpd propagation delay [2] An to Yn; see Figure 6 VCC = 3.0 V to 3.6 V VCC = 4.5 V to 5.5 V CL = 15 pF CL = 50 pF [2] E3 to Yn; see Figure 6 VCC = 3.0 V to 3.6 V VCC = 4.5 V to 5.5 V CL = 15 pF CL = 50 pF E1, E2 to Yn; see Figure 7 [2] VCC = 3.0 V to 3.6 V VCC = 4.5 V to 5.5 V CPD power CL = 50 pF; fi = 1 MHz; dissipation VI = GND to VCC capacitance [4] 74AHC_AHCT138_3 Product data sheet (c) NXP B.V. 2007. All rights reserved. Rev. 03 -- 28 November 2007 7 of 16 74AHC138; 74AHCT138 NXP Semiconductors 3-to-8 line decoder/demultiplexer; inverting Table 7. Dynamic characteristics ...continued GND = 0 V; For test circuit see Figure 8. Symbol Parameter 25 C Conditions -40 C to +85 C -40 C to +125 C Unit Min Typ[1] Max Min Max Min Max - 4.4 10.4 1.0 12.0 1.0 13.0 ns - 6.2 11.4 1.0 13.0 1.0 14.5 ns - 4.3 9.1 1.0 10.5 1.0 11.5 ns - 6.2 10.1 1.0 11.5 1.0 13.0 ns - 4.3 9.6 1.0 11.0 1.0 12.0 ns - 6.2 10.6 1.0 12.0 1.0 13.5 ns - 23.0 - - - - - pF For type 74AHCT138 tpd propagation delay An to Yn; see Figure 6 [2] VCC = 4.5 V to 5.5 V CL = 15 pF CL = 50 pF E3 to Yn; see Figure 6 [2] VCC = 4.5 V to 5.5 V CL = 15 pF CL = 50 pF E3 to Yn; see Figure 7 [2] VCC = 4.5 V to 5.5 V CL = 15 pF CL = 50 pF CPD power CL = 50 pF; fi = 1 MHz; dissipation VI = GND to VCC capacitance [4] [1] Typical values are measured at nominal supply voltage (VCC = 3.3 V and VCC = 5.0 V). [2] tpd is the same as tPLH and tPHL. [3] Skew between any two outputs of the same package switching in the same direction. This parameter is guaranteed by design. [4] CPD is used to determine the dynamic power dissipation (PD in W). PD = CPD x VCC2 x fi x N + (CL x VCC2 x fo) where: fi = input frequency in MHz, fo = output frequency in MHz CL = output load capacitance in pF VCC = supply voltage in V N = number of inputs switching (CL x VCC2 x fo) = sum of the outputs. 11. Waveforms VCC An, E3 input VM GND tPHL tPLH VOH VM Yn output VOL 001aah080 Measurement points are given in Table 8. VOL and VOH are typical voltage output levels that occur with the output load. Fig 6. The inputs An, E3 to outputs Yn propagation delays 74AHC_AHCT138_3 Product data sheet (c) NXP B.V. 2007. All rights reserved. Rev. 03 -- 28 November 2007 8 of 16 74AHC138; 74AHCT138 NXP Semiconductors 3-to-8 line decoder/demultiplexer; inverting VCC VM E1, E2 input GND tPHL tPLH VOH VM Yn output VOL 001aah081 Measurement points are given in Table 8. VOL and VOH are typical voltage output levels that occur with the output load. Fig 7. The inputs En to outputs Yn propagation delays Table 8. Measurement points Type Input Output VM VM 74AHC138 0.5VCC 0.5VCC 74AHCT138 1.5 V 0.5VCC 74AHC_AHCT138_3 Product data sheet (c) NXP B.V. 2007. All rights reserved. Rev. 03 -- 28 November 2007 9 of 16 74AHC138; 74AHCT138 NXP Semiconductors 3-to-8 line decoder/demultiplexer; inverting VI tW 90 % negative pulse VM 0V tf tr tr tf VI 90 % positive pulse 0V VM 10 % VM VM 10 % tW VCC VCC PULSE GENERATOR VI VO RL S1 open DUT RT CL 001aad983 Test data is given in Table 9. Definitions test circuit: RT = Termination resistance should be equal to output impedance Zo of the pulse generator. CL = Load capacitance including jig and probe capacitance. RL = Load resistance. S1 = Test selection switch. Fig 8. Load circuit for switching times Table 9. Test data Type Input Load S1 position VI tr, tf CL RL tPHL, tPLH tPZH, tPHZ tPZL, tPLZ 74AHC138 VCC 3.0 ns 15 pF, 50 pF 1 k open GND VCC 74AHCT138 3.0 V 3.0 ns 15 pF, 50 pF 1 k open GND VCC 74AHC_AHCT138_3 Product data sheet (c) NXP B.V. 2007. All rights reserved. Rev. 03 -- 28 November 2007 10 of 16 74AHC138; 74AHCT138 NXP Semiconductors 3-to-8 line decoder/demultiplexer; inverting 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 0 detail X w M bp 2.5 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 0.039 0.016 0.028 0.020 inches 0.010 0.057 0.069 0.004 0.049 0.16 0.15 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 9. Package outline SOT109-1 (SO16) 74AHC_AHCT138_3 Product data sheet (c) NXP B.V. 2007. All rights reserved. Rev. 03 -- 28 November 2007 11 of 16 74AHC138; 74AHCT138 NXP Semiconductors 3-to-8 line decoder/demultiplexer; inverting TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm SOT403-1 E D A X c y HE v M A Z 9 16 Q (A 3) A2 A A1 pin 1 index Lp L 1 8 e detail X w M bp 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (2) e HE L Lp Q v w y Z (1) mm 1.1 0.15 0.05 0.95 0.80 0.25 0.30 0.19 0.2 0.1 5.1 4.9 4.5 4.3 0.65 6.6 6.2 1 0.75 0.50 0.4 0.3 0.2 0.13 0.1 0.40 0.06 8 o 0 o Notes 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. 2. Plastic interlead protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT403-1 REFERENCES IEC JEDEC JEITA MO-153 EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-18 Fig 10. Package outline SOT403-1 (TSSOP16) 74AHC_AHCT138_3 Product data sheet (c) NXP B.V. 2007. All rights reserved. Rev. 03 -- 28 November 2007 12 of 16 74AHC138; 74AHCT138 NXP Semiconductors 3-to-8 line decoder/demultiplexer; inverting DHVQFN16: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads; SOT763-1 16 terminals; body 2.5 x 3.5 x 0.85 mm A B D A A1 E c detail X terminal 1 index area terminal 1 index area C e1 e 2 7 y y1 C v M C A B w M C b L 1 8 Eh e 16 9 15 10 Dh X 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) UNIT A(1) max. A1 b 1 0.05 0.00 0.30 0.18 mm c D (1) Dh E (1) Eh 0.2 3.6 3.4 2.15 1.85 2.6 2.4 1.15 0.85 e 0.5 e1 L v w y y1 2.5 0.5 0.3 0.1 0.05 0.05 0.1 Note 1. Plastic or metal protrusions of 0.075 mm maximum per side are not included. REFERENCES OUTLINE VERSION IEC JEDEC JEITA SOT763-1 --- MO-241 --- EUROPEAN PROJECTION ISSUE DATE 02-10-17 03-01-27 Fig 11. Package outline SOT763-1 (DHVQFN16) 74AHC_AHCT138_3 Product data sheet (c) NXP B.V. 2007. All rights reserved. Rev. 03 -- 28 November 2007 13 of 16 74AHC138; 74AHCT138 NXP Semiconductors 3-to-8 line decoder/demultiplexer; inverting 13. Abbreviations Table 10. Abbreviations Acronym Description CMOS Complementary Metal Oxide Semiconductor LSTTL Low-power Schottky Transistor-Transistor Logic ESD ElectroStatic Discharge HBM Human Body Model MM Machine Model CDM Charged-Device Model TTL Transistor-Transistor Logic 14. Revision history Table 11. Revision history Document ID Release date Data sheet status Change notice Supersedes 74AHC_AHCT138_3 20071128 Product data sheet - 74AHC_AHCT138_2 Modifications: * The format of this data sheet has been redesigned to comply with the new identity guidelines of NXP Semiconductors. * * * * Legal texts have been adapted to the new company name where appropriate. Section 3: DHVQFN16 package added. Section 8: derating values added for DHVQFN16 package. Section 12: outline drawing added for DHVQFN16 package. 74AHC_AHCT138_2 19990927 Product specification - 74AHC_AHCT138_1 74AHC_AHCT138_1 19900331 Product specification - - 74AHC_AHCT138_3 Product data sheet (c) NXP B.V. 2007. All rights reserved. Rev. 03 -- 28 November 2007 14 of 16 74AHC138; 74AHCT138 NXP Semiconductors 3-to-8 line decoder/demultiplexer; inverting 15. Legal information 15.1 Data sheet status 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] Please consult the most recently issued document before initiating or completing a design. [2] The term `short data sheet' is explained in section "Definitions". [3] 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 URL http://www.nxp.com. 15.2 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. NXP Semiconductors 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 NXP Semiconductors sales office. In case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail. 15.3 Disclaimers General -- Information in this document is believed to be accurate and reliable. However, NXP Semiconductors 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. Right to make changes -- NXP Semiconductors 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 -- NXP Semiconductors products are not designed, authorized or warranted to be suitable for use in medical, military, aircraft, space or life support equipment, nor in applications where failure or malfunction of an NXP Semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage. NXP Semiconductors accepts no liability for inclusion and/or use of NXP Semiconductors products in such equipment or applications and therefore such inclusion and/or use is at the customer's own risk. Applications -- Applications that are described herein for any of these products are for illustrative purposes only. NXP Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Limiting values -- Stress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC 60134) may cause permanent damage to the device. Limiting values are stress ratings only and operation of the device at these or any other conditions above those given in the Characteristics sections of this document is not implied. Exposure to limiting values for extended periods may affect device reliability. Terms and conditions of sale -- NXP Semiconductors products are sold subject to the general terms and conditions of commercial sale, as published at http://www.nxp.com/profile/terms, including those pertaining to warranty, intellectual property rights infringement and limitation of liability, unless explicitly otherwise agreed to in writing by NXP Semiconductors. In case of any inconsistency or conflict between information in this document and such terms and conditions, the latter will prevail. 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. 15.4 Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. 16. Contact information For additional information, please visit: http://www.nxp.com For sales office addresses, send an email to: salesaddresses@nxp.com 74AHC_AHCT138_3 Product data sheet (c) NXP B.V. 2007. All rights reserved. Rev. 03 -- 28 November 2007 15 of 16 NXP Semiconductors 74AHC138; 74AHCT138 3-to-8 line decoder/demultiplexer; inverting 17. Contents 1 2 3 4 5 5.1 5.2 6 7 8 9 10 11 12 13 14 15 15.1 15.2 15.3 15.4 16 17 General description . . . . . . . . . . . . . . . . . . . . . . 1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2 Pinning information . . . . . . . . . . . . . . . . . . . . . . 3 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3 Functional description . . . . . . . . . . . . . . . . . . . 4 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 4 Recommended operating conditions. . . . . . . . 5 Static characteristics. . . . . . . . . . . . . . . . . . . . . 5 Dynamic characteristics . . . . . . . . . . . . . . . . . . 7 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 11 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Revision history . . . . . . . . . . . . . . . . . . . . . . . . 14 Legal information. . . . . . . . . . . . . . . . . . . . . . . 15 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 15 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Contact information. . . . . . . . . . . . . . . . . . . . . 15 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Please be aware that important notices concerning this document and the product(s) described herein, have been included in section `Legal information'. (c) NXP B.V. 2007. All rights reserved. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com Date of release: 28 November 2007 Document identifier: 74AHC_AHCT138_3