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SN74ABT543A

更新时间： 2024-11-11 23:06:11
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德州仪器 - TI 输出元件
页数 文件大小 规格书
7页 110K
描述
OCTAL REGISTERED TRANSCEIVER WITH 3-STATE OUTPUTS

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SN74ABT543A 数据手册

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SN74ABT543A  
OCTAL REGISTERED TRANSCEIVER  
WITH 3-STATE OUTPUTS  
SCBS464A – JUNE 1992 – REVISED JUNE 1994  
DB, DW, OR NT PACKAGE  
(TOP VIEW)  
• State-of-the-Art EPIC-ΙΙB BiCMOS Design  
Significantly Reduces Power Dissipation  
• ESD Protection Exceeds 2000 V Per  
MIL-STD-883C, Method 3015; Exceeds  
200 V Using Machine Model (C = 200 pF,  
R = 0)  
LEBA  
OEBA  
A1  
1
2
3
4
5
6
7
8
9
24  
V
CC  
23 CEBA  
22 B1  
A2  
A3  
A4  
A5  
21 B2  
• Latch-Up Performance Exceeds 500 mA  
20 B3  
Per JEDEC Standard JESD-17  
19 B4  
• Typical V  
(Output Ground Bounce) < 1 V  
18 B5  
OLP  
at V  
= 5 V, T = 25°C  
A6  
A7  
A8 10  
17 B6  
CC  
A
16 B7  
15 B8  
• High-Drive Outputs (–32-mA I  
,
OH  
64-mA I  
)
OL  
CEAB  
GND  
11  
12  
14 LEAB  
13 OEAB  
• Package Options Include Plastic  
Small-Outline (DW) and Shrink  
Small-Outline (DB) Packages, and Standard  
Plastic 300-mil DIPs (JT)  
description  
The SN74ABT543A octal transceiver contains two sets of D-type latches for temporary storage of data flowing  
in either direction. Separate latch-enable (LEAB or LEBA) and output-enable (OEAB or OEBA) inputs are  
provided for each register to permit independent control in either direction of data flow.  
The A-to-B enable (CEAB) input must be low in order to enter data from A or to output data from B. If CEAB is  
low and LEAB is low, the A-to-B latches are transparent; a subsequent low-to-high transition of LEAB puts the  
A latches in the storage mode. With CEAB and OEAB both low, the 3-state B outputs are active and reflect the  
data present at the output of the A latches. Data flow from B to A is similar but requires using the CEBA, LEBA,  
and OEBA inputs.  
To ensure the high-impedance state during power up or power down, OE should be tied to V through a pullup  
CC  
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.  
The SN74ABT543A is packaged in TI’s shrink small-outline package (DB), which provides the same I/O pin  
count and functionality of standard small-outline packages in less than half the printed-circuit-board area.  
The SN74ABT543A is characterized for operation from –40°C to 85°C.  
†
FUNCTION TABLE  
INPUTS  
OUTPUT  
B
CEAB  
LEAB  
OEAB  
A
X
X
X
L
H
X
L
L
L
X
X
H
L
X
H
L
Z
Z
‡
B
0
L
L
L
L
H
H
†
‡
A-to-B data flow is shown; B-to-A flow control is the  
same except that it uses CEBA, LEBA, and OEBA.  
Output level before the indicated steady-state input  
conditions were established.  
EPIC-ΙΙB is a trademark of Texas Instruments Incorporated.  
Copyright 1994, 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  
1234567

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