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參數(shù)資料
| 型號： | SN54AS640FK |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS |
| 中文描述： | 八路總線收發(fā)器與三態(tài)輸出 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大小： | 112K |
| 代理商： | SN54AS640FK |
SN54ALS640B, SN54AS640, SN74ALS640B, SN74AS640
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SDAS122A – DECEMBER 1983 – REVISED JANUARY 1995
Copyright
1995, Texas Instruments Incorporated
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Bidirectional Bus Transceivers in
High-Density 20-Pin Packages
Inverting Logic
Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), and Standard Plastic (N)
and Ceramic (J) 300-mil DIPs
description
These octal bus transceivers are designed for
asynchronous two-way communication between
data buses. These devices transmit data from the
A bus to the B bus or from the B bus to the A bus,
depending upon the level at the direction-control
(DIR) input. The output-enable (OE) input can be
used to disable the device so that the buses are
effectively isolated.
The -1 version of the SN74ALS640B is identical to
the
standard
version,
recommended maximum I
OL
for the -1 version is
increased to 48 mA. There is no -1 version of the
SN54ALS640B.
except
that
the
The SN54ALS640B and SN54AS640 are
characterized for operation over the full military
temperature range of –55
°
C to 125
°
C. The
SN74ALS640B
and
characterized for operation from 0
°
C to 70
°
C.
SN74AS640
are
FUNCTION TABLE
INPUTS
OPERATION
OE
L
DIR
L
B data to A bus
L
H
A data to B bus
H
X
Isolation
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
V
CC
OE
B1
B2
B3
B4
B5
B6
B7
B8
SN54ALS640B, SN54AS640 . . . J PACKAGE
SN74ALS640B, SN74AS640 . . . DW OR N PACKAGE
(TOP VIEW)
3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
B1
B2
B3
B4
B5
A3
A4
A5
A6
A7
SN54ALS640B, SN54AS640 . . . FK PACKAGE
(TOP VIEW)
A
A
D
B
B
O
A
G
B
V
C
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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| SN54ALS640BFK | OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS |
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| SN54AS645J | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
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| SN54AS74FK | 制造商:Texas Instruments 功能描述: |
| SN54AS756J | 制造商:Texas Instruments 功能描述:Buffer/Line Driver 8-CH Inverting 3-ST/Open Collector Bipolar 20-Pin CDIP Tube 制造商:Texas Instruments 功能描述:BFFR/LINE DRVR 8CH INV 3-ST/OPEN COLLECTOR BIPOLAR 20CDIP - Rail/Tube |
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