SN54HC245, SN74HC245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCLS131D – DECEMBER 1982 – REVISED AUGUST 2003
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Wide Operating Voltage Range of 2 V to 6 V
High-Current 3-State Outputs Drive Bus
Lines Directly or Up To 15 LSTTL Loads
Low Power Consumption, 80-µA Max I
CC
Typical t
pd
= 12 ns
±6-mA Output Drive at 5 V
Low Input Current of 1 µA Max
3212019
910111213
4
5
6
7
8
18
17
16
15
14
B1
B2
B3
B4
B5
A3
A4
A5
A6
A7
A2
A1
DIR
B7
B6
OE
A8
GND
B8
V
CC
SN54HC245 ...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
V
CC
OE
B1
B2
B3
B4
B5
B6
B7
B8
SN54HC245 ...J OR W PACKAGE
SN74HC245 . . . DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
description/ordering information
These octal bus transceivers are designed for asynchronous two-way communication between data buses. The
control-function implementation minimizes external timing requirements.
The devices allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending on
the logic 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.
ORDERING INFORMATION
T
A
PACKAGE
†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP – N T ube of 20 SN74HC245N SN74HC245N
T ube of 25 SN74HC245DW
Reel of 2000 SN74HC245DWR
°
°
SOP – NS Reel of 2000 SN74HC245NSR HC245
SSOP – DB Reel of 2000 SN74HC245DBR HC245
T ube of 70 SN74HC245PW
Reel of 2000 SN74HC245PWR
Reel of 250 SN74HC245PWT
CDIP – J T ube of 20 SNJ54HC245J SNJ54HC245J
°
°
CFP – W T ube of 85 SNJ54HC245W SNJ54HC245W
LCCC – FK T ube of 55 SNJ54HC245FK SNJ54HC245FK
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications o
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 2003, 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.
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
