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SN74AUCH245 Folha de dados(PDF) 1 Page - Texas Instruments

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Nome de Peças SN74AUCH245
Descrição Electrónicos  OCTAL BUS TRANSCEIVER WITH 3 STATE OUTPUTS
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Fabricante Electrônico  TI [Texas Instruments]
Página de início  http://www.ti.com
Logo TI - Texas Instruments

SN74AUCH245 Folha de dados(HTML) 1 Page - Texas Instruments

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SN74AUCH245
OCTAL BUS TRANSCEIVER
WITH 3STATE OUTPUTS
SCES420 – JANUARY 2003
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Optimized for 1.8-V Operation and Is 3.6-V
I/O Tolerant to Support Mixed-Mode Signal
Operation
D Ioff Supports Partial-Power-Down Mode
Operation
D Sub 1-V Operable
D Max tpd of 2 ns at 1.8 V
D Low Power Consumption, 20-µA Max ICC
D ±8-mA Output Drive at 1.8 V
D Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors
D Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
D ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
description/ordering information
This octal bus transceiver is operational at 0.8-V to 2.7-V VCC, but is designed specifically for 1.65-V to 1.95-V
VCC operation.
The SN74AUCH245 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 holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors
with the bus-hold circuitry is not recommended.
This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
–40
°C to 85°C
QFN – RGY
Tape and reel
SN74AUCH245RGYR
MT245
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design
guidelines are available at www.ti.com/sc/package.
Copyright
 2003, 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.
RGY PACKAGE
(TOP VIEW)
120
10
11
2
3
4
5
6
7
8
9
19
18
17
16
15
14
13
12
OE
B1
B2
B3
B4
B5
B6
B7
A1
A2
A3
A4
A5
A6
A7
A8
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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