SN74ALS1020A Datasheet, PDF (1/3 Pages) Texas Instruments – DUAL 4-INPUT POSITIVE-NAND BUFFERS

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• Buffer Version of ’ALS20B
• Package Options include Plastic Small
Outline Packages, Ceramic Chip Carriers,
and Standard Plastic and Ceramic 300-mil
DIPs
• Dependable Texas Instruments Quality and
Reliability
description
These devices contain two independent 4-input
NAND buffers. They perform the Boolean
functions Y = A•B•C•B or Y = A+B+C+D positive
logic.
The SN54ALS1020A is characterized for opera-
tion over the full military temperature range of
−55°C to 125°C. The SN74ALS1020A is
characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each gate)
INPUTS
OUTPUT
ABCD
Y
HHHH
L
LXXX
H
XLXX
H
XXLX
H
XXXL
H
logic symbol^†
1
&
1A
2
1B
4
1C
5
1D
9
2A
10
2B
12
2C
13
2D
6
1Y
8
2Y
† _{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.
SN54ALS1020A, SN74ALS1020A
DUAL 4ĆINPUT POSITIVEĆNAND BUFFERS
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SDAS 242 − D2661, APRIL 1982 − REVISED MAY 1986
SN54ALS1020A . . . J PACKAGE
SN74ALS1020A . . . D OR N PACKAGE
(TOP VIEW)
1A 1
1B 2
NC 3
1C 4
1D 5
1Y 6
GND 7
14 V_CC
13 2D
12 ^2C
11 ^NC
10 ^2B
9 ^2A
8 ^2Y
SN54ALS1020A . . . FK PACKAGE
(TOP VIEW)
NC
3 2 1 20 19
4
18
2C
NC ₅
17 ^NC
1C 6
16 NC
NC 7
15 NC
1D 8
14 2B
9 10 11 12 13
NC − No internal connection
logic diagram (positive logic)
1A
1B
1C
1Y
1D
2A
2B
2C
2Y
2D
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.
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Copyright  1986, Texas Instruments Incorporated
5BASIC
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