SN54HCT373, SN74HCT373
OCTAL TRANSPARENT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SCLS009D – MARCH 1984 – REVISED AUGUST 2003
SN54HCT373 . . .J OR W PACKAGE
SN74HCT373 . . .DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
Operating Voltage Range of 4.5 V to 5.5 V
High-Current 3-State True Outputs Can
Drive Up To 15 LSTTL Loads
Low Power Consumption, 80-µA Max I
Typical t = 21 ns
pd
6-mA Output Drive at 5 V
OE
1Q
1D
2D
2Q
3Q
3D
4D
4Q
V
CC
8Q
8D
1
2
3
4
5
6
7
8
9
20
19
18
CC
17 7D
16 7Q
15 6Q
Low Input Current of 1 µA Max
Inputs Are TTL-Voltage Compatible
Eight High-Current Latches in a Single
Package
14
6D
13 5D
12 5Q
11 LE
Full Parallel Access for Loading
GND 10
description/ordering information
SN54HCT373 . . .FK PACKAGE
(TOP VIEW)
These 8-bit latches feature 3-state outputs
designed specifically for driving highly capacitive
or relatively low-impedance loads. They are
particularly suitable for implementing buffer
registers, I/O ports, bidirectional bus drivers, and
working registers.
3
2
1
20 19
18
8D
7D
7Q
2D
2Q
3Q
3D
4D
4
5
6
7
8
17
16
The eight latches of the ’HCT373 devices are
transparent
D-type
latches.
While
the
15 6Q
14
9 10 11 12 13
latch-enable (LE) input is high, the Q outputs
follow the data (D) inputs. When LE is taken low,
the Q outputs are latched at the levels that were
set up at the D inputs.
6D
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
PDIP – N
Tube of 20
Tube of 25
Reel of 2000
Reel of 2000
Reel of 2000
Tube of 70
Reel of 2000
Reel of 250
Tube of 20
Tube of 85
Tube of 55
SN74HCT373N
SN74HCT373N
SN74HCT373DW
SN74HCT373DWR
SN74HCT373NSR
SN74HCT373DBR
SN74HCT373PW
SN74HCT373PWR
SN74HCT373PWT
SNJ54HCT373J
SOIC – DW
HCT373
SOP – NS
HCT373
HT373
–40°C to 85°C
SSOP – DB
TSSOP – PW
HT373
CDIP – J
CFP – W
LCCC – FK
SNJ54HCT373J
SNJ54HCT373W
–55°C to 125°C
SNJ54HCT373W
SNJ54HCT373FK
SNJ54HCT373FK
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 2003, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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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