SN54HCT245, SN74HCT245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCLS020E – MARCH 1984 – REVISED AUGUST 2003
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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
Low Power Consumption, 80-µA Max I
CC
Typical t
pd
= 14 ns
±6-mA Output Drive at 5 V
Low Input Current of 1 µA Max
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
PDIP – N T ube of 20 SN74HCT245N SN74HCT245N
T ube of 25 SN74HCT245DW
Reel of 2000 SN74HCT245DWR
°
°
SOP – NS Reel of 2000 SN74HCT245NSR HCT245
SSOP – DB Reel of 2000 SN74HCT245DBR HT245
T ube of 70 SN74HCT245PW
Reel of 2000 SN74HCT245PWR
Reel of 250 SN74HCT245PWT
CDIP – J T ube of 20 SNJ54HCT245J SNJ54HCT245J
°
°
CFP – W T ube of 85 SNJ54HCT245W SNJ54HCT245W
LCCC – FK T ube 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 o
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.
