SN74AHC245-Q1 Datasheet, PDF (1/11 Pages) Texas Instruments – OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS

SN74AHC245ĆQ1
OCTAL BUS TRANSCEIVER
WITH 3ĆSTATE OUTPUTS
SCLS527A − AUGUST 2003 − REVISED APRIL 2008
D Qualified for Automotive Applications
D ESD Protection Exceeds 1000 V Per
MIL-STD-883, Method 3015; Exceeds 100 V
Using Machine Model (C = 200 pF, R = 0)
D Operating Range 2-V to 5.5-V V_CC
description/ordering information
The SN74AHC245 octal bus transceiver is designed
for asynchronous two-way communication between
data buses. The control-function implementation
minimizes external timing requirements.
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 effectively are isolated.
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
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 Tape and reel
TSSOP − PW Tape and reel
SN74AHC245QDWRQ1
SN74AHC245QPWRQ1
AHC245Q1
AHC245Q1
† _{For the most current package and ordering information, see the Package Option Addendum at the end of}
this document, or see the TI web site at http://www.ti.com.
‡ _{Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.}
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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