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Details, datasheet, quote on part number:SN74ALS12A
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Datasheet text preview:
SN54ALS12A, SN74ALS12A TRIPLE 3-INPUT POSITIVE-NAND GATES WITH OPEN-COLLECTOR OUTPUTS
SDAS008A MARCH 1984 REVISED MAY 1986
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SN54ALS12A . . . J PACKAGE SN74ALS12A . . . D OR N PACKAGE (TOP VIEW)
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. 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.
FUNCTION TABLE (each gate) INPUTS A H L X X B H X L X C H X X L OUTPUT Y L H H H 1A 1B 1C 1 2 13 3 4 5 9 10 11 8 3Y 6 2Y 3A 3B 3C & 12 1Y 2A 2B 2C
1A 1B 2A 2B 2C 2Y GND
1 2 3 4 5 6 7
14 13 12 11 10 9 8
V CC 1C 1Y 3C 3B 3A 3Y
SN54ALS12A . . . FK PACKAGE (TOP VIEW)
2A NC 2B NC 2C
4 5 6 7 8
3 2 1 20 19 18 17 16 15 14 9 10 11 12 13
1B 1A NC VCC 1C 1Y NC 3C NC 3B
NC No internal connection
logic diagram (positive logic)
2Y GND NC 3Y 3A
logic symbol
1A 1B 1C 2A 2B 2C 3A 3B 3C
1Y
2Y
3Y
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.
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.
Copyright © 1986, Texas Instruments Incorporated 5BASIC
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
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SN54ALS12A, SN74ALS12A TRIPLE 3-INPUT POSITIVE-NAND GATES WITH OPEN-COLLECTOR OUTPUTS
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 MIN VCC VIH VIL VOH IOL TA Supply voltage High-level input voltage Low-level input voltage High-level output voltage Low-level output current Operating free-air temperature 55 4.5 2 0.7 5.5 4 125 0 NOM 5 MAX 5.5 SN74ALS12A MIN 4.5 2 0.8 5.5 8 70 NOM 5 MAX 5.5 UNIT V V V V mA °C
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER VIK VOL IOH II IIH IIL ICCH ICCL TEST CONDITIONS CONDITIONS VCC = 4.5 V, VCC = 4.5 V, VCC = 4.5 V, VCC = 4.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, II = 18 mA IOL = 4 mA IOL = 8 mA VOH = 5.5 V VI = 7 V VI = 2.7 V VI = 0.4 V VI = 0 V VI = 4.5 V 0.32 1.2 MIN SN54ALS12A TYP MAX 1.5 0.25 0.4 0.1 0.1 20 0.1 0.6 2.2 0.32 1.2 0.25 0.35 MIN SN74ALS12A TYP MAX 1.5 0.4 0.5 0.1 0.1 20 0.1 0.6 2.2 UNIT V V mA mA µA mA mA mA
VCC = 5.5 V, All typical values are at VCC = 5 V, TA = 25°C
switching characteristics (see Note 1)
VCC = 4.5 V to 5.5 V, CL = 50 pF, PARAMETER FROM (INPUT) TO (OUTPUT) RL = 2 k , TA = MIN to MAX SN54ALS12A SN74ALS12A MIN tPLH tPHL Any Any Y Y 23 5 MAX 59 26 MIN 23 5 MAX 54 18 ns ns UNIT
NOTE 1: Load circuit and voltage waveforms are shown in Section 1 of ALS/AS Logic Data Book, 1986.
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· DALLAS, TEXAS 75265
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