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SN74ALVCH245DGVR 데이터시트(PDF) 1 Page - Texas Instruments

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부품명 SN74ALVCH245DGVR
상세설명  OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
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제조업체  TI [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI - Texas Instruments

SN74ALVCH245DGVR 데이터시트(HTML) 1 Page - Texas Instruments

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FEATURES
DESCRIPTION/ORDERING INFORMATION
DGV, DW, NS, 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
SN74ALVCH245
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES119G – JULY 1997 – REVISED SEPTEMBER 2004
Operates From 1.65 V to 3.6 V
Max tpd of 3.4 ns at 3.3 V
±24-mA Output Drive at 3.3 V
Bus Hold on Data Inputs Eliminates the Need
for External Pullup/Pulldown Resistors
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
This octal bus transceiver is designed for 1.65-V to
3.6-V VCC operation.
The SN74ALVCH245 is designed for asynchronous
communication between data buses. The device
transmits data 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 the
buses are effectively isolated.
<br/>
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.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors
with the bus-hold circuitry is not recommended.
ORDERING INFORMATION
TA
PACKAGE(1)
ORDERABLE PART NUMBER
TOP-SIDE MARKING
Tube
SN74ALVCH245DW
SOIC - DW
ALVCH245
Tape and reel
SN74ALVCH245DWR
SOP - NS
Tape and reel
SN74ALVCH245NSR
ALVCH245
-40
°C to 85°C
Tube
SN74ALVCH245PW
TSSOP - PW
VB245
Tape and reel
SN74ALVCH245PWR
TVSOP - DGV
Tape and reel
SN74ALVCH245DGVR
VB245
(1)
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
FUNCTION TABLE
INPUTS
OPERATION
OE
DIR
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.
Copyright © 1997–2004, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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