SN54AHC245 Datasheet, PDF (1/18 Pages) Texas Instruments – OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

D Operating Range 2-V to 5.5-V V_CC
D Latch-Up Performance Exceeds 250 mA Per
JESD 17
description/ordering information
The ’AHC245 octal bus transceivers are designed
for asynchronous two-way communication
between data buses. The control-function
implementation minimizes external timing
requirements.
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.
To ensure the high-impedance state during power
up or power down, OE should be tied to V_CC
through a pullup resistor; the minimum value of
the resistor is determined by the current-sinking
capability of the driver.
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)
DIR 1
A1 2
A2 3
A3 4
A4 5
A5 6
A6 7
A7 8
A8 9
GND ¹⁰
20 V_CC
19 OE
18 B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
11 _B8
SN54AHC245 . . . FK PACKAGE
(TOP VIEW)
3 2 1 20 19
A3 4
18 B1
A4 5
17 B2
A5 6
16 B3
A6 7
15 B4
A7 8
14 B5
9 10 11 12 13
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP – N
Tube
SN74AHC245N
SN74AHC245N
SOIC – DW
Tube
Tape and reel
SN74AHC245DW
SN74AHC245DWR
AHC245
–40°C to 85°C SSOP – DB
Tape and reel SN74AHC245DBR
HA245
TSSOP – PW
Tube
Tape and reel
SN74AHC245PW
SN74AHC245PWR
HA245
TVSOP – DGV Tape and reel SN74AHC245DGVR HA245
CDIP – J
Tube
SNJ54AHC245J
SNJ54AHC245J
–55°C to 125°C CFP – W
Tube
SNJ54AHC245W
SNJ54AHC245W
LCCC – FK
Tube
SNJ54AHC245FK
SNJ54AHC245FK
† _{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.
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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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.
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