SDAS008A − MARCH 1984 − REVISED MAY 1986 • • Package Options Include Plastic Small Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs Dependable Texas Instruments Quality and Reliability SN54ALS12A . . . J PACKAGE SN74ALS12A . . . D OR N PACKAGE (TOP VIEW) 1A 1B 2A 2B 2C 2Y GND description These devices contain three independent 3-input NAND gates with open-collector outputs. These gates perform the Boolean functions Y = A•B•C or Y = A+B+C in positive logic. The open-collector outputs require pullup resistors to perform correctly. They may be connected to other open-collector outputs to implement active-low wired-OR or active-high wired-AND functions. Open-collector devices are often used to generate higher VOH levels. C H H H L L X X H X L X H X X L H 1B 1C 2A 2B 2C 3A 3B 3C 1 12 4 11 5 10 6 9 7 8 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 1Y NC 3C NC 3B 2Y GND NC 3Y 3A 4 NC −No internal connection Y logic diagram (positive logic) logic symbol† 1A 3 VCC 1C 1Y 3C 3B 3A 3Y 1B 1A NC VCC 1C 2A NC 2B NC 2C OUTPUT B 13 (TOP VIEW) FUNCTION TABLE (each gate) INPUTS 14 2 SN54ALS12A . . . FK PACKAGE The SN54ALS12A is characterized for operation over the full military temperature range of − 55°C to 125°C. The SN74ALS12A is characterized for operation from 0°C to 70°C. A 1 & 2 12 1Y 1A 1B 1C 1Y 2A 2B 2C 2Y 3A 3B 3C 3Y 13 3 4 6 2Y 5 9 10 8 3Y 11 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for D, J, and N packages. Copyright 1986, Texas Instruments Incorporated 5BASIC !"#$ % &'!!($ #% )'*+&#$ ,#$(!,'&$% &!" $ %)(&&#$% )(! $.( $(!"% (/#% %$!'"($% %$#,#!, 0#!!#$1- !,'&$ )!&(%%2 ,(% $ (&(%%#!+1 &+',( $(%$2 #++ )#!#"($(!%- • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77001 • 1 SDAS008A − MARCH 1984 − REVISED MAY 1986 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Off-state output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Operating free-air temperature range: SN54ALS12A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 125°C SN74ALS12A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C recommended operating conditions SN54ALS12A SN74ALS12A MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 UNIT VCC VIH Supply voltage VIL VOH Low-level input voltage 0.7 0.8 High-level output voltage 5.5 5.5 IOL TA Low-level output current 4 8 mA 70 °C High-level input voltage 2 Operating free-air temperature 2 −55 125 V V 0 V V electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK VOL IOH II IIH IIL ICCH ICCL SN54ALS12A TYP† MAX TEST CONDITIONS SN74ALS12A TYP† MAX MIN MIN VCC = 4.5 V, VCC = 4.5 V, II = − 18 mA IOL = 4 mA VCC = 4.5 V, VCC = 4.5 V, IOL = 8 mA VOH = 5.5 V 0.1 0.1 mA VCC = 5.5 V, VCC = 5.5 V, VI = 7 V VI = 2.7 V 0.1 0.1 mA 20 20 µA VCC = 5.5 V, VCC = 5.5 V, VI = 0.4 V VI = 0 V −0.1 −0.1 mA 0.32 0.6 0.32 0.6 mA VI = 4.5 V 1.2 2.2 1.2 2.2 mA VCC = 5.5 V, † All typical values are at VCC = 5 V, TA = 25°C −1.5 0.25 −1.5 UNIT 0.4 0.25 0.4 0.35 0.5 V V switching characteristics (see Note 1) VCC = 4.5 V to 5.5 V, CL = 50 pF, PARAMETER tPLH tPHL FROM TO (INPUT) (OUTPUT) RL = 2 k Ω, TA = MIN to MAX SN54ALS12A SN74ALS12A MIN MAX MIN MAX Any Y 23 59 23 54 ns Any Y 5 26 5 18 ns NOTE 1: Load circuit and voltage waveforms are shown in Section 1 of ALS/AS Logic Data Book, 1986. 2 UNIT • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77001 • IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. 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