SN54ALS805A Datasheet, PDF (1/6 Pages) Texas Instruments – HEX 2-INPUT NOR DRIVERS

SN54ALS805A, SN54AS805B, SN74ALS805A, SN74AS805B
HEX 2-INPUT NOR DRIVERS
• High Capacitive-Drive Capability
• ′ALS805A Has Typical Delay Time of 4.2 ns
(C_L = 50 pF) and Typical Power Dissipation
of 4.2 mW Per Gate
• ′AS805B Has Typical Delay Time of 2.6 ns
(C_L = 50 pF) and Typical Power Dissipation
of 12 mW Per Gate
• Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), and Standard Plastic (N)
and Ceramic (J) 300-mil DIPs
description
These devices contain six independent 2-input
NOR drivers. They perform the Boolean functions
Y = A + B or Y = A • B in positive logic.
The SN54ALS805A and SN54AS805B are
characterized for operation over the full military
temperature range of – 55°C to 125°C. The
SN74ALS805A and SN74AS805B are
characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each driver)
INPUTS
A
B
OUTPUT
Y
H
X
L
X
H
L
L
L
H
SDAS023C – DECEMBER 1982 – REVISED JANUARY 1995
SN54ALS805A, SN54AS805B . . . J PACKAGE
SN74ALS805A, SN74AS805B . . . DW OR N PACKAGE
(TOP VIEW)
1A ₁
1B ₂
1Y 3
2A 4
2B 5
2Y 6
3A 7
3B 8
3Y 9
GND 10
20 ^V_CC
19 ^6B
18 6A
17 6Y
16 5B
15 5A
14 5Y
13 4B
12 4A
11 4Y
SN54ALS805A, SN54AS805B . . . FK PACKAGE
(TOP VIEW)
2A
3 2 1 20 19
4
18
6A
2B ₅
17 ^6Y
2Y 6
16 5B
3A 7
15 5A
3B 8
14 5Y
9 10 11 12 13
logic symbol^†
1
1A
≥1
2
1B
4
2A
5
2B
7
3A
8
3B
12
4A
13
4B
15
5A
16
5B
18
6A
19
6B
3
1Y
6
2Y
9
3Y
11
4Y
14
5Y
17
6Y
† _{This symbol is in accordance with ANSI/IEEE Std 91-1984 and}
IEC Publication 617-12.
logic diagram (positive logic)
1
1A
2
1B
4
2A
5
2B
7
3A
8
3B
12
4A
13
4B
15
5A
16
5B
18
6A
19
6B
3
1Y
6
2Y
9
3Y
11
4Y
14
5Y
17
6Y
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
Copyright © 1995, Texas Instruments Incorporated
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