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參數(shù)資料
| 型號(hào)： | SN54F243 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Quadruple Bus Transceivers(四總線收發(fā)器(三態(tài)同相輸出)) |
| 中文描述： | 四人間總線收發(fā)器（四總線收發(fā)器（三態(tài)同相輸出）） |
| 文件頁(yè)數(shù)： | 1/5頁(yè) |
| 文件大?。?/td> | 109K |
| 代理商： | SN54F243 |
SN54F243, SN74F243
QUADRUPLE BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SDFS086 – MARCH 1987 – REVISED OCTOBER 1993
Copyright
1993, Texas Instruments Incorporated
2–1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Asynchronous Communication Between
Data Buses
Local Bus-Latch Capability
True Logic
Package Options Include Plastic
Small-Outline Packages, Ceramic Chip
Carriers, and Standard Plastic and Ceramic
300-mil DIPs
description
These quadruple bus transceivers are designed
for asynchronous communications between data
buses. The control function implementation allows
for maximum flexibility in timing. These devices
allow data transmission from the A bus to the
B bus or from the B bus to the A bus depending
upon the logic levels at the output-enable (OEBA
and OEAB) inputs. The output-enable inputs can
be used to disable the device so that the buses are
effectively isolated.
The
quadruple bus transceivers the capability to store
data by simultaneous enabling of OEBA and
OEAB. Each output reinforces its input in this
transceiver configuration. Thus, when both control
inputs are enabled and all other data sources to
the two sets of bus lines are at high impedance,
both sets of bus lines (eight in all) remain at their
states. The 4-bit codes appearing on the two sets
of buses will be identical for the
′
F243.
dual-enable
configuration
gives
the
The SN54F243 is characterized for operation over
the full military temperature range of –55
°
C to
125
°
C. The SN74F243 is characterized for
operation from 0
°
C to 70
°
C.
FUNCTION TABLE
INPUTS
FUNCTION
OEAB
L
OEBA
L
A to B
H
H
B to A
H
L
Isolation
L
H
Latch A and B
(A = B)
SN54F243 . . . J PACKAGE
SN74F243 . . . D OR N PACKAGE
(TOP VIEW)
SN54F243 . . . FK PACKAGE
(TOP VIEW)
3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
NC
NC
B1
NC
B2
A1
NC
A2
NC
A3
N
O
N
B
B
V
O
A
G
N
C
NC – No internal connection
1
2
3
4
5
6
7
14
13
12
11
10
9
8
OEAB
NC
A1
A2
A3
A4
GND
V
CC
OEBA
NC
B1
B2
B3
B4
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.
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