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SN54HC645 Datasheet(HTML) 1 Page - Texas Instruments

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Part No. SN54HC645
Description  OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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SN54HC645 Datasheet(HTML) 1 Page - Texas Instruments

 
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SN54HC645, SN74HC645
OCTAL BUS TRANSCEIVERS
WITH 3STATE OUTPUTS
SCLS304B – JANUARY 1996 – REVISED DECEMBER 2002
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Wide Operating Voltage Range of 2 V to 6 V
D High-Current 3-State Outputs Can Drive Up
To 15 LSTTL Loads
D Low Power Consumption, 80-µA Max ICC
D Typical tpd = 12 ns
D ±6-mA Output Drive at 5 V
D Low Input Current of 1 µA Max
D True Logic
SN54HC645 ...J OR W PACKAGE
SN74HC645 ...DW, N, OR NS PACKAGE
(TOP VIEW)
SN54HC645 . . . FK PACKAGE
(TOP VIEW)
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
VCC
OE
B1
B2
B3
B4
B5
B6
B7
B8
32
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
description/ordering information
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 the
buses are effectively isolated.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP – N
Tube
SN74HC645N
SN74HC645N
40
°Cto85°C
SOIC
DW
Tube
SN74HC645DW
HC645
–40
°C to 85°C
SOIC – DW
Tape and reel
SN74HC645DWR
HC645
SOP – NS
Tape and reel
SN74HC645NSR
HC645
CDIP – J
Tube
SNJ54HC645J
SNJ54HC645J
–55
°C to 125°C
CFP – W
Tube
SNJ54HC645W
SNJ54HC645W
LCCC – FK
Tube
SNJ54HC645FK
SNJ54HC645FK
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design
guidelines are available at www.ti.com/sc/package.
FUNCTION TABLE
INPUTS
OPERATION
OE
DIR
OPERATION
L
L
B data to A bus
L
H
A data to B bus
H
X
Isolation
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.
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.
Copyright
 2002, Texas Instruments Incorporated
On products compliant to MILPRF38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.


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