SN54HCT245, SN74HCT245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCLS020E – MARCH 1984 – REVISED AUGUST 2003
SN54HCT245 . . . J OR W PACKAGE
SN74HCT245 . . . DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
Operating Voltage Range of 4.5 V to 5.5 V
High-Current 3-State Outputs Drive Bus
Lines Directly or Up To 15 LSTTL Loads
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
DIR
A1
V
CC
Low Power Consumption, 80-µA Max I
Typical t = 14 ns
pd
6-mA Output Drive at 5 V
CC
OE
B1
B2
B3
B4
B5
B6
B7
B8
A2
A3
Low Input Current of 1 µA Max
Inputs Are TTL-Voltage Compatible
A4
A5
A6
description/ordering information
A7
A8
These octal bus transceivers are designed for
asynchronous two-way communication between
data buses. The control-function implementation
minimizes external timing requirements.
GND
SN54HCT245 . . . FK PACKAGE
(TOP VIEW)
The ’HCT245 devices allow data transmission
from the Abus to the B bus or from the B bus to the
A bus, depending upon 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.
3
2
1
20 19
18
B1
B2
B3
B4
B5
A3
A4
A5
A6
A7
4
5
6
7
8
17
16
15
14
9 10 11 12 13
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
PDIP – N
Tube of 20
Tube of 25
Reel of 2000
Reel of 2000
Reel of 2000
Tube of 70
Reel of 2000
Reel of 250
Tube of 20
Tube of 85
Tube of 55
SN74HCT245N
SN74HCT245N
SN74HCT245DW
SN74HCT245DWR
SN74HCT245NSR
SN74HCT245DBR
SN74HCT245PW
SN74HCT245PWR
SN74HCT245PWT
SNJ54HCT245J
SOIC – DW
HCT245
SOP – NS
HCT245
HT245
–40°C to 85°C
SSOP – DB
TSSOP – PW
HT245
CDIP – J
CFP – W
LCCC – FK
SNJ54HCT245J
SNJ54HCT245W
SNJ54HCT245FK
–55°C to 125°C
SNJ54HCT245W
SNJ54HCT245FK
†
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 of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 2003, Texas Instruments Incorporated
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.
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.
1
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