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SN54AC373

更新时间: 2024-09-15 22:59:11
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德州仪器 - TI 锁存器输出元件
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描述
OCTAL D-TYPE TRANSPARENT LATCHES WITH 3-STATE OUTPUTS

SN54AC373 数据手册

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SN54AC373, SN74AC373  
OCTAL D-TYPE TRANSPARENT LATCHES  
WITH 3-STATE OUTPUTS  
SCAS540B – OCTOBER 1995 – REVISED JUNE 1996  
SN54AC373 . . . J OR W PACKAGE  
SN74AC373 . . . DB, DW, N, OR PW PACKAGE  
(TOP VIEW)  
3-State Noninverting Outputs Drive Bus  
Lines Directly  
Full Parallel Access for Loading  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
OE  
1Q  
1D  
2D  
2Q  
3Q  
3D  
4D  
4Q  
V
CC  
EPIC (Enhanced-Performance Implanted  
CMOS) 1-µm Process  
8Q  
8D  
7D  
7Q  
6Q  
6D  
5D  
5Q  
LE  
Package Options Include Plastic  
Small-Outline (DW) Shrink Small-Outline  
(DB) and Thin Shrink Small-Outline (PW)  
Packages, Ceramic Chip Carriers (FK) and  
Flatpacks (W), and Standard Plastic (N) and  
Ceramic (J) DIPs  
description  
GND  
These 8-bit latches feature 3-state outputs  
designed specifically for driving highly capacitive  
or relatively low-impedance loads. The devices  
are particularly suitable for implementing buffer  
registers, I/O ports, bidirectional bus drivers, and  
working registers.  
SN54AC373 . . . FK PACKAGE  
(TOP VIEW)  
3
2
1
20 19  
18  
2D  
2Q  
3Q  
3D  
4D  
8D  
7D  
7Q  
6Q  
6D  
4
5
6
7
8
The eight latches are D-type transparent latches.  
When the 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 logic  
levels set up at the D inputs.  
17  
16  
15  
14  
9 10 11 12 13  
A buffered output-enable (OE) input can be used  
to place the eight outputs in either a normal logic  
state (high or low logic levels) or the high-  
impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The  
high-impedance state and increased drive provide the capability to drive bus lines in bus-organized systems  
without need for interface or pullup components.  
OE does not affect the internal operations of the latches. Old data can be retained or new data can be entered  
while the outputs are in the high-impedance state.  
The SN54AC373 is characterized for operation over the full military temperature range of 55°C to 125°C. The  
SN74AC373 is characterized for operation from 40°C to 85°C.  
FUNCTION TABLE  
(each latch)  
INPUTS  
OUTPUT  
Q
OE  
L
LE  
H
H
L
D
H
L
H
L
L
L
X
X
Q
0
H
X
Z
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.  
EPIC is a trademark of Texas Instruments Incorporated.  
Copyright 1996, 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
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  

SN54AC373 替代型号

型号 品牌 替代类型 描述 数据表
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AC SERIES, 8-BIT DRIVER, TRUE OUTPUT, CQCC20, CERAMIC, CC-20