SN54ALS244B, SN54AS244, SN74ALS244B, SN74AS244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SDAS142 - D2661, DECEMBER 1982 - REVISED JULY 1987 * * * * 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers PNP inputs Reduce DC Loading Package Options include Plastic Small Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs Dependable Texas instruments Quality and Reliability SN54ALS244B, SN54AS244 . . . J PACKAGE SN74ALS244B, SN74AS244 . . . DW OR N PACKAGE (TOP VIEW) 1G 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND description The -1 version of the SN74ALS244B is identical to the standard version except that the recommended maximum IOL is increased to 48 mA. There is no -1 version of the SN54ALS244B. 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 VCC 2G 1Y1 A24 1Y2 2A3 1Y3 2A2 1Y4 2A1 2Y4 1A1 1G VCC 2G SN54ALS244B, SN54AS244 . . . FK PACKAGE (TOP VIEW) 1A2 2Y3 1A3 2Y2 1A4 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 1Y1 2A4 1Y2 2A3 1Y3 2Y1 GND 2A1 1Y4 2A2 These octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. Taken together with the 'ALS240A, 'ALS241A, 'AS240, and 'AS241, these devices provide the choice of selected combinations of inverting outputs, symmetrical G (active-low input control) inputs, and complementary G and G inputs. 1 The SN54ALS244B and SN54AS244 are characterized for operation over the full military temperature range of - 55C to 125C. The SN74ALS244B and SN74AS244 are characterized for operation from 0C to 70C. logic symbol 1G 1A1 1A2 1A3 1A4 2G 2A1 2A2 2A3 2A4 1 EN 1G 2 18 4 16 6 14 8 12 19 1Y1 1A1 1Y2 1Y3 1Y4 1A2 1A3 1A4 EN 11 9 13 7 15 5 17 3 2Y1 2G 2Y2 2A1 2Y3 2Y4 This is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers are for DW, J, and N packages. 2A2 2A3 2A4 1 2 18 4 16 6 14 8 12 1Y1 1Y2 1Y3 1Y4 19 11 9 13 7 15 5 17 3 1Y1 1Y2 1Y3 1Y4 Copyright 1987, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 SN54ALS244B, SN74ALS244B OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SDAS142 - D2661, DECEMBER 1982 - REVISED JULY 1987 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Voltage applied to a disabled 3-state output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V Operating free-air temperature range: SN54ALS244B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55C to 125C SN74ALS244B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0C to 70C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65C to 150C recommended operating conditions SN54ALS244B VCC VIH Supply voltage SN74ALS244B MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 High-level input voltage 2 2 UNIT V V 0.8 VIL 0.8 Low-level input voltage g V 0.7 IOH High-level output current - 12 - 15 12 IOL mA 24 Low level output current Low-level 48 mA TA Operating free-air temperature - 55 125 0 70 C Tested at - 55C to 70C. Tested at 70C to 125C, per MIL-STD-883, method 5005, sub-group 1, 2, and 3. Static tests are performed at 25C, 125C, and 55C. The extended limits apply only if VCC is maintained between 4.75 V and 5.25 V. The 48-mA limit applies for the SN74ALS244B-1 only. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK VOH VOL TEST CONDITIONS VCC = 4.5 V, II = - 18 mA VCC = 4.5 V to 5.5 V, IOH = - 0.4 mA VCC = 4.5 V to 5.5 V, IOH = - 3 mA VCC = 4.5 V, IOH = - 12 mA VCC = 4.5 V, IOH = - 15 mA VCC = 4.5 V, VCC = 4.75 V, IOL = 12 mA IOL = 24 mA SN54ALS244B MIN TYP MAX SN74ALS244B MIN TYP MAX - 1.5 - 1.5 VCC - 2 UNIT V VCC - 2 2.4 3.2 2.4 3.2 V 2 2 0.25 0.4 0.25 0.4 V (IOL = 48 mA for -1 version) 20 20 A - 20 - 20 A 0.1 0.1 mA 20 20 A - 0.1 mA - 112 mA IOZH IOZL VCC = 5.5 V, VCC = 5.5 V, VO = 2.7 V VO = 0.4 V II IIH VCC = 5.5 V, VCC = 5.5 V, VI = 7 V VI = 2.7 V IIL IO# VCC = 5.5 V, VI = 0.4 V VCC = 5.5 V, VO = 2.25 V Outputs high 9 15 9 15 ICC VCC = 5.5 V Outputs low 15 24 15 24 Outputs disabled 17 27 17 27 - 0.1 - 30 - 112 - 30 mA All typical values are at VCC = 5 V, TA = 25C. # The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS. 2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 SN54ALS244B, 2N74ALS244B OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SDAS142 - D2661, DECEMBER 1982 - REVISED JULY 1987 switching characteristics (see Note 1) PARAMETER FROM (INPUT) VCC = 4.5 V to 5.5 V, CL = 50 pF, R1 = 500 , R2 = 500 , TA = MIN to MAX TO (OUTPUT) SN54AS244 tPLH tPHL A Y tPZH tPZL G Y tPHZ tPLZ G Y UNIT SN74AS244 MIN MAX MIN MAX 1 16 3 10 3 12 3 10 1 26 3 20 1 24 3 20 2 10 3 10 1 26 3 13 ns ns ns For conditions shown MIN or MAX, use the appropriate value specified under recommended operating conditions. NOTE 1: Load circuit and voltage waveforms are shown in Section 1 of the ALS/AS Logic Data Book, 1986. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3 SN54AS244, SN74AS244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SDAS142 - D2661, DECEMBER 1982 - REVISED JULY 1987 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Voltage applied to a disabled 3-state output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V Operating free-air temperature range: SN54AS244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55C to 125C SN74AS244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0C to 70C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65C to 150C recommended operating conditions SN54AS244 VCC VIH Supply Voltage VIL IOH Low-level input voltage IOL TA Low-level output current SN74AS244 MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 High-level input voltage 2 2 High-level output current - 55 V V 0.8 0.8 V - 12 - 15 mA 64 mA 70 C 48 Operating free-air temperature UNIT 125 0 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK TEST CONDITIONS SN54AS244 TYP MAX MIN VCC = 4.5 V, II = - 18 mA VCC = 4.5 V to 5.5 V, IOH = - 2 mA VCC - 2 VCC = 4.5 V, IOH = - 3 mA 2.4 VCC = 4.5 V, IOH = - 12 mA 2.4 VCC = 4.5 V, IOH = - 15 mA VOL VCC = 4.5 V, VCC = 4.5 V, IOL = 48 mA IOL = 64 mA IOZH IOZL VCC = 5.5 V, VCC = 5.5 V, VO = 2.7 V VO = 0.4 V II IIH VCC = 5.5 V, VCC = 5.5 V, VI = 7 V VI = 2.7 V VOH IIL IO ICC G A VCC = 5 5.5 5V V, VI = 0 0.4 4V VCC = 5.5 V, VO = 2.25 V Outputs high VCC = 5.5 V SN74AS244 TYP MAX MIN - 1.2 - 1.2 UNIT V VCC - 2 3.4 2.4 3.4 V 2.4 0.55 0.55 - 50 V A 50 50 - 50 - 50 A 0.1 0.1 mA A 20 20 - 0.5 - 0.5 -1 -1 - 150 50 - 150 22 34 22 34 Outputs low 60 90 60 90 Outputs disabled 34 54 34 54 mA mA mA All typical values are at VCC = 5 V, TA = 25C. # The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS. 4 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 SN54AS244, SN74AS244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SDAS142 - D2661, DECEMBER 1982 - REVISED JULY 1987 switching characteristics (see Note 1) PARAMETER FROM (INPUT) VCC = 4.5 V to 5.5 V, CL = 50 pF, R1 = 500 , R2 = 500 , TA = MIN to MAX TO (OUTPUT) SN54AS244 tPLH tPHL A Y tPZH tPZL G Y tPHZ tPLZ G Y UNIT SN74AS244 MIN MAX MIN MAX 2 9 2 6.2 2 7 2 6.2 2 10 2 9 2 8 2 7.5 2 6.5 2 6 2 10.5 2 9 ns ns ns For conditions shown MIN or MAX, use the appropriate value specified under recommended operating conditions. NOTE 1: Load circuit and voltage waveforms are shown in Section 1 of the ALS/AS Logic Data Book, 1986. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 5 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. 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