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SN74AHC245QDWRG4Q1 데이터시트(PDF) 1 Page - Texas Instruments

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부품명 SN74AHC245QDWRG4Q1
상세설명  OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
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제조업체  TI1 [Texas Instruments]
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SN74AHC245Q
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SGDS018 – FEBRUARY 2002
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
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 VCC
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.
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 VCC 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
°Cto125°C
SOIC – DW
Tape and reel
SN74AHC245QDWR
AHC245Q
–40
°C to 125°C
TSSOP – PW
Tape and reel
SN74AHC245QPWR
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
OPERATION
OE
DIR
OPERATION
L
L
B data to A bus
L
H
A data to B bus
H
X
Isolation
Copyright
 2002, 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.
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.
DW OR PW 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
VCC
OE
B1
B2
B3
B4
B5
B6
B7
B8


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