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SN74ABTH245DWR Folha de dados(PDF) 1 Page - Texas Instruments

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Nome de Peças SN74ABTH245DWR
Descrição Electrónicos  OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

SN74ABTH245DWR Folha de dados(HTML) 1 Page - Texas Instruments

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SN54ABTH245, SN74ABTH245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS663D – APRIL 1996 – REVISED SEPTEMBER 1999
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D State-of-the-Art EPIC-ΙΙB™ BiCMOS Design
Significantly Reduces Power Dissipation
D Latch-Up Performance Exceeds 500 mA Per
JESD 17
D Typical VOLP (Output Ground Bounce) < 1 V
at VCC = 5 V, TA = 25°C
D Ioff and Power-Up 3-State Support Hot
Insertion
D High-Drive Outputs (–32-mA IOH, 64-mA IOL)
D Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors
D Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), Thin Shrink Small-Outline (PW), and
Thin Very Small-Outline (DGV) Packages,
Ceramic Chip Carriers (FK), Plastic (N) and
Ceramic (J) DIPs, and Ceramic Flat (W)
Package
description
These octal bus transceivers are designed for
asynchronous communication between data
buses. The devices transmit 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.
When VCC is between 0 and 2.1 V, the device is in the high-impedance state during power up or power down.
However, to ensure the high-impedance state above 2.1 V, 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.
This device is fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry
disables the outputs, preventing damaging current backflow through the device when it is powered down. The
power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down,
which prevents driver conflict.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
The SN54ABTH245 is characterized for operation over the full military temperature range of –55
°C to 125°C.
The SN74ABTH245 is characterized for operation from –40
°C to 85°C.
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.
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.
EPIC-
ΙΙB is a trademark of Texas Instruments Incorporated.
SN54ABTH245 ...J OR W PACKAGE
SN74ABTH245 . . . DB, DGV, DW, N, OR PW PACKAGE
(TOP VIEW)
SN54ABTH245 . . . FK PACKAGE
(TOP VIEW)
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11
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
VCC
OE
B1
B2
B3
B4
B5
B6
B7
B8
32 1 20 19
9 10 11 12 13
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5
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B1
B2
B3
B4
B5
A3
A4
A5
A6
A7


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