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74ACT11543DWR Datasheet(Hoja de datos) 1 Page - Texas Instruments

No. de Pieza. 74ACT11543DWR
Descripción  OCTAL REGISTERED TRANSCEIVER WITH 3-STATE OUTPUTS
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Fabricante  TI [Texas Instruments]
Página de inicio  http://www.ti.com
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74ACT11543
OCTAL REGISTERED TRANSCEIVER
WITH 3-STATE OUTPUTS
SCAS136 – D3608, JULY 1990 – REVISED APRIL 1993
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Copyright
© 1993, Texas Instruments Incorporated
2–1
Inputs Are TTL-Voltage Compatible
3-State True Outputs
Back-to-Back Registers for Storage
Flow-Through Architecture Optimizes
PCB Layout
Center-Pin V
CC and GND Configurations
Minimize High-Speed Switching Noise
EPICt (Enhanced-Performance Implanted
CMOS) 1-
mm Process
500-mA Typical Latch-Up Immunity at 125°C
description
This 8-bit registered 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 (GAB or GBA)
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 to B. Having CEAB
low and LEAB low makes the A-to-B latches transparent; a subsequent low-to-high transition of LEAB puts the
A latches in the storage mode. With CEAB and GAB 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 the use of CEBA, LEBA,
and GBA inputs.
The 74ACT11543 is characterized for operation from – 40
°C to 85°C.
FUNCTION TABLE
INPUTS
LATCH
STATUS
OUTPUT BUFFERS
CEAB
LEAB
GAB
STATUS
A TO B†
B1 THRU B8
H
X
X
Storing
Z
X
H
Storing
X
H
Z
L
L
L
Transparent
Current A Data
L
H
L
Storing
Previous} A Data
† A-to-B data flow is shown: B-to-A flow control is the same except uses
CEBA, LEBA, and GBA.
‡ Data present before low-to-high transition of LEAB.
DW PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
CEBA
A1
A2
A3
A4
GND
GND
GND
GND
A5
A6
A7
A8
CEAB
GBA
LEBA
B1
B2
B3
B4
VCC
VCC
B5
B6
B7
B8
LEAB
GAB
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.
EPIC is a trademark of Texas Instruments Incorporated.




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