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SN74ALVCH245DW Datasheet(PDF) 1 Page - Texas Instruments

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Part # SN74ALVCH245DW
Description  OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

SN74ALVCH245DW Datasheet(HTML) 1 Page - Texas Instruments

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SN74ALVCH245
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES119D – JULY 1997 – REVISED MAY 1999
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D EPIC™ (Enhanced-Performance Implanted
CMOS) Submicron Process
D Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
D Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors
D Package Options Include Plastic
Small-Outline (DW), Thin Very
Small-Outline (DGV), and Thin Shrink
Small-Outline (PW) Packages
description
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.
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.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
The SN74ALVCH245 is characterized for operation from –40
°C to 85°C.
FUNCTION TABLE
INPUTS
OPERATION
OE
DIR
OPERATION
L
L
B data to A bus
L
H
A data to B bus
H
X
Isolation
Copyright
© 1999, 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.
EPIC is a trademark of Texas Instruments Incorporated.
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.
DGV, DW, OR PW PACKAGE
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DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
VCC
OE
B1
B2
B3
B4
B5
B6
B7
B8


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