SN54ALS1804A, SN54AS1804, SN74ALS1804A, SN74AS1804
HEX 2-INPUT NAND DRIVERS
SDAS042B – AUGUST 1984 – REVISED MAY 1986
• High Capacitive Drive Capability
SN54ALS1804A, SN54AS1804 . . . J PACKAGE
SN74ALS1804A, SN74AS1804 . . . DW OR N PACKAGE
• ’ALS1804A Has Typical Delay Time of 4 ns
(TOP VIEW)
(C = 50 pF) and Typical Power Dissipation
L
of 3.4 mW per Gate
5B
6Y
6A
6B
5A
5Y
4B
4A
4Y
GND
3Y
3B
3A
2Y
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
• ’AS1804 Has Typical Delay Time of 2.6 ns
(C = 50 pF) and Typical Power Dissipation
L
of Less than 9 mW per Gate
• Center V
and GND Configuration
Provides Minimum Lead inductance in High
Current Switching Applications
V
CC
CC
1A
1B
1Y
2A
2B
• Package Options include Plastic Small
Outline Packages, Ceramic Chip Carriers,
and Standard Plastic and Ceramic 300-mil
DIPs
Use ’ALS804A or ’AS804 for chip carrier option.
• Dependable Texas Instruments Quality and
Reliability
†
logic symbol
description
6
&
1A
1B
8
11
14
16
19
2
These devices contain six independent 2-input
NAND drivers. They perform the Boolean
functions Y = A•B or Y = A+B in positive logic.
1Y
2Y
3Y
4Y
5Y
6Y
7
9
2A
2B
3A
3B
10
12
13
The center pin configuration used in the
’ALS1804A and ’AS1804 provides a reduction of
lead inductance when compared to the ’ALS804A
and ’AS804B. This reduction of lead inductance
will minimize noise generated onto either the V
or GND bus. This reduction is significant in high
current switching applications.
17
18
20
1
4A
4B
5A
5B
CC
3
4
The SN54ALS1804A and SN54AS1804 are
characterized for operation over the full military
temperature range of –55°C to 125°C. The
SN74ALS1804A and SN74AS1804 are charac-
terized for operation from 0°C to 70°C.
6A
6B
†
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
logic diagram (positive logic)
FUNCTION TABLE
(each driver)
1A
1B
INPUTS
OUTPUT
1Y
2Y
3Y
4Y
5Y
6Y
A
H
L
B
H
X
L
Y
L
2A
2B
H
H
X
3A
3B
4A
4B
5A
5B
6A
6B
Copyright 1986, Texas Instruments Incorporated
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.
1
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