SN54AHC245, SN74AHC245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCLS230I – OCTOBER 1995 – REVISED JULY 2003
SN54AHC245 . . . J OR W PACKAGE
SN74AHC245 . . . DB, DGV, DW, N, OR PW PACKAGE
(TOP VIEW)
Operating Range 2-V to 5.5-V V
CC
Latch-Up Performance Exceeds 250 mA Per
JESD 17
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
DIR
A1
V
CC
description/ordering information
OE
B1
B2
B3
B4
B5
B6
B7
B8
A2
The ’AHC245 octal bus transceivers are designed
for asynchronous two-way communication
between data buses. The control-function
implementation minimizes external timing
requirements.
A3
A4
A5
A6
A7
These 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.
A8
GND
SN54AHC245 . . . FK PACKAGE
(TOP VIEW)
To ensure the high-impedance state during power
up or power down, OE should be tied to V
CC
3
2
1 20 19
18
through a pullup resistor; the minimum value of
the resistor is determined by the current-sinking
capability of the driver.
B1
B2
A3
A4
A5
A6
A7
4
5
6
7
8
17
16 B3
15
14
B4
B5
9 10 11 12 13
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
PDIP – N
Tube
SN74AHC245N
SN74AHC245N
Tube
SN74AHC245DW
SN74AHC245DWR
SN74AHC245DBR
SN74AHC245PW
SN74AHC245PWR
SN74AHC245DGVR
SNJ54AHC245J
SOIC – DW
SSOP – DB
TSSOP – PW
AHC245
Tape and reel
Tape and reel
Tube
–40°C to 85°C
HA245
HA245
Tape and reel
Tape and reel
Tube
TVSOP – DGV
CDIP – J
HA245
SNJ54AHC245J
SNJ54AHC245W
SNJ54AHC245FK
–55°C to 125°C
CFP – W
Tube
SNJ54AHC245W
SNJ54AHC245FK
LCCC – FK
Tube
†
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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