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SN74AVCBH324245 Datasheet(PDF) 1 Page - Texas Instruments

Part No. SN74AVCBH324245
Description  32-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

SN74AVCBH324245 Datasheet(HTML) 1 Page - Texas Instruments

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FEATURES
DESCRIPTION/ORDERING INFORMATION
SN74AVCBH324245
32-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
SCES550B – FEBRUARY 2004 – REVISED JUNE 2005
Inputs/Outputs Can Tolerate up to 4.6 V,
Which Allows Mixed-Voltage-Mode Data
Member of the Texas Instruments Widebus+™
Communications
Family
Ioff Supports Partial-Power-Down Mode
DOC™ Circuitry Dynamically Changes Output
Operation
Impedance, Resulting in Noise Reduction
Without Speed Degradation
Fully Configurable Dual-Rail Design Allows
Each Port to Operate Over Full 1.4-V to 3.6-V
Dynamic Drive Capability Is Equivalent to
Power-Supply Range
Standard Outputs With IOH and IOL of
Bus Hold on Data Inputs Eliminates the Need
±24 mA at 3-V V
CC
for External Pullup/Pulldown Resistors
±15 mA at 2.3-V V
CC
Latch-Up Performance Exceeds 100 mA Per
±9 mA at 1.65-V V
CC
JESD 78, Class II
±6 mA at 1.4-V V
CC
ESD Protection Exceeds JESD 22
Control Inputs VIH/VIL Levels Are Referenced
– 2000-V Human-Body Model (A114-A)
to VCCB Voltage
– 200-V Machine Model (A115-A)
If Either VCC Input Is at GND, Both Ports Are in
– 1000-V Charged-Device Model (C101)
the High-Impedance State
This 32-bit noninverting bus transceiver uses two separate configurable power-supply rails. The A port is
designed to track VCCA. VCCA accepts any supply voltage from 1.4 V to 3.6 V. The B port is designed to track
VCCB. VCCB accepts any supply voltage from 1.4 V to 3.6 V. This allows for universal low-voltage bidirectional
translation between any of the 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes.
The SN74AVCBH324245 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 is used to disable the outputs, so the buses effectively
are isolated.
The SN74AVCBH324245 is designed so that the control pins (1DIR, 2DIR, 1OE, and 2OE) are supplied by VCCB.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Use of pullup or
pulldown resistors with the bus-hold circuitry is not recommended.
To ensure the high-impedance state during power up or power down, OE should be tied to VCCB 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 partial-power-down applications using Ioff. The Ioff circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down. If either VCC input is at GND,
both ports are in the high-impedance state.
ORDERING INFORMATION
TA
PACKAGE(1)
ORDERABLE PART NUMBER
TOP-SIDE MARKING
LFBGA – GKE
Tape and reel
SN74AVCBH324245KR
–40°C to 85°C
WN4245
LFBGA – ZKE
Tape and reel
74AVCBH324245ZKER
(1)
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
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.
Widebus+, DOC are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2004–2005, 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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