SN74AHC245Q Datasheet, PDF (1/14 Pages) Texas Instruments – OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS

SN74AHC245Q
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SGDS018 – FEBRUARY 2002
D Q Devices Meet Automotive Performance
Requirements
D Customer-Specific Configuration Control
Can Be Supported Along With
Major-Change Approval
D Operating Range 2-V to 5.5-V V_CC
D Latch-Up Performance Exceeds 250 mA Per
JESD 17
description
The SN74AHC245Q octal bus transceiver is
designed for asynchronous two-way
communication between data buses. The
control-function implementation minimizes
external timing requirements.
DW 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
This device allows 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.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
–40°C to 125°C
SOIC – DW
TSSOP – PW
Tape and reel
Tape and reel
SN74AHC245QDWR
SN74AHC245QPWR
AHC245Q
HA245Q
† _{Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines}
are available at www.ti.com/sc/package.
FUNCTION TABLE
(each transceiver)
INPUTS
OE DIR
OPERATION
L
L
B data to A bus
L
H A data to B bus
H
X
Isolation
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.
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Copyright  2002, Texas Instruments Incorporated
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