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SN74AVCBH164245GR Arkusz danych(PDF) 1 Page - Texas Instruments

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Numer części SN74AVCBH164245GR
Szczegółowy opis  16-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
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Producent  TI1 [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI1 - Texas Instruments

SN74AVCBH164245GR Arkusz danych(HTML) 1 Page - Texas Instruments

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1
FEATURES
DESCRIPTION/ORDERING INFORMATION
SN74AVCBH164245
16-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
SCES393B – JUNE 2002 – REVISED MARCH 2008
www.ti.com
2
• Member of the Texas Instruments
• I
off Supports Partial-Power-Down Mode
Widebus™ Family
Operation
• Dynamic Output Control (DOC™) Circuitry
• Fully Configurable Dual-Rail Design Allows
Dynamically Changes Output Impedance,
Each Port to Operate Over the Full 1.4-V to
Resulting in Noise Reduction Without Speed
3.6-V Power-Supply Range
Degradation
• Bus Hold on Data Inputs Eliminates the Need
• Dynamic Drive Capability Is Equivalent to
for External Pullup/Pulldown Resistors
Standard Outputs With IOH and IOL of ±24 mA at
• Latch-Up Performance Exceeds 100 mA Per
2.5-V VCC
JESD 78, Class II
• Control Inputs V
IH/VIL Levels are Referenced to
• ESD Protection Exceeds JESD 22
VCCB Voltage
2000-V Human-Body Model (A114-A)
• If Either V
CC Input Is at GND, Both Ports Are in
200-V Machine Model (A115-A)
the High-Impedance State
1000-V Charged-Device Model (C101)
• Overvoltage-Tolerant Inputs/Outputs Allow
Mixed-Voltage-Mode Data Communications
This 16-bit (dual-octal) 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 SN74AVCBH164245 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 outputs so the buses are
effectively isolated.
The SN74AVCBH164245 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)(2)
ORDERABLE PART NUMBER
TOP-SIDE MARKING
TSSOP – DGG
Tape and reel
SN74AVCBH164245GR
AVCBH164245
TVSOP – DGV
Tape and reel
SN74AVCBH164245VR
WBH4245
–40
°C to 85°C
VFBGA – GQL
Tape and reel
SN74AVCBH164245KR
WBH4245
VFBGA – ZQL (Pb-free)
Tape and reel
SN74AVCBH164245ZQLR
WBH4245
(1)
Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
(2)
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
1
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.
2
Widebus, DOC are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2002–2008, 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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