SN54HCT245, SN74HCT245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS

SCLS020E – MARCH 1984 – REVISED AUGUST 2003
1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
C0068 Operating Voltage Range of 4.5 V to 5.5 V
C0068 High-Current 3-State Outputs Drive Bus
Lines Directly or Up To 15 LSTTL Loads
C0068 Low Power Consumption, 80-µA Max I
CC
C0068 Typical t
pd
= 14 ns
C0068 ±6-mA Output Drive at 5 V
C0068 Low Input Current of 1 µA Max
C0068 Inputs Are TTL-Voltage Compatible
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 ’HCT245 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 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
–40 C to 85 C
PDIP – N Tube of 20 SN74HCT245N SN74HCT245N
SOIC – DW
Tube of 25 SN74HCT245DW
HCT245
Reel of 2000 SN74HCT245DWR
° °
SOP – NS Reel of 2000 SN74HCT245NSR HCT245
SSOP – DB Reel of 2000 SN74HCT245DBR HT245
TSSOP – PW
Tube of 70 SN74HCT245PW
HT245Reel of 2000 SN74HCT245PWR
Reel of 250 SN74HCT245PWT
–55 C to 125 C
CDIP – J Tube of 20 SNJ54HCT245J SNJ54HCT245J
° ° CFP – W Tube of 85 SNJ54HCT245W SNJ54HCT245W
LCCC – FK Tube of 55 SNJ54HCT245FK 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.
3 2 1 20 19
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
SN54HCT245 . . . 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
SN54HCT245 ...J OR W PACKAGE
SN74HCT245 . . . DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)

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.