SN74AS1808 Datasheet, PDF (1/6 Pages) Texas Instruments – HEX 2-INPUT AND DRIVER

SN74AS1808
HEX 2ĆINPUT AND DRIVER
ą
SDAS044C − AUGUST 1984 − REVISED JANUARY 1995
• High Capacitive-Drive Capability
• Typical Delay Time of 3.2 ns (C_L = 50 pF)
and Typical Power Dissipation of Less
Than 13 mW Per Gate
• Center V_CC and GND Configuration
Provides Minimum Lead Inductance in
High-Current Switching Applications
• Packaged in Standard Plastic (N) 300-mil
DIPs
description
This device contains six independent 2-input AND
drivers. It performs the Boolean functions
Y = A • B or Y = A + B in positive logic.
N PACKAGE
(TOP VIEW)
5B ₁
6Y ₂
6A 3
6B 4
V_CC 5
1A 6
1B 7
1Y 8
2A 9
2B 10
20 ^5A
19 ^5Y
18 4B
17 4A
16 4Y
15 GND
14 3Y
13 3B
12 3A
11 2Y
The center-pin configuration reduces lead inductance when compared to the ′AS808B. The reduced lead
inductance minimizes noise generated onto either the V_CC or GND bus. This reduction is significant in
high-current switching applications.
The SN74AS1808 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each driver)
INPUTS
A
B
OUTPUT
Y
H
H
H
L
X
L
X
L
L
logic symbol^†
6
1A
&
7
1B
9
2A
10
2B
12
3A
13
3B
17
4A
18
4B
20
5A
1
5B
3
6A
4
6B
8
1Y
11
2Y
14
3Y
16
4Y
19
5Y
2
6Y
† _{This symbol is in accordance with ANSI/IEEE Std 91-1984 and}
IEC Publication 617-12.
logic diagram (positive logic)
6
1A
7
1B
9
2A
10
2B
12
3A
13
3B
17
4A
18
4B
20
5A
1
5B
3
6A
4
6B
8
1Y
11
2Y
14
3Y
16
4Y
19
5Y
2
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.
Copyright  1995, Texas Instruments Incorporated
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