SN74AVCB164245
16-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
www.ti.com
SCES394D – JUNE 2002 – REVISED JUNE 2005
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FEATURES
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Member of the Texas Instruments Widebus™
Family
DOC™ Circuitry Dynamically Changes Output
Impedance, Resulting in Noise Reduction
Without Speed Degradation
Dynamic Drive Capability Is Equivalent to
Standard Outputs With IOH and IOL of ±24 mA
at 2.5-V VCC
Control Inputs VIH/VIL Levels Are Referenced
to VCCB Voltage
If Either VCC Input Is at GND, Both Ports Are in
the High-Impedance State
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Overvoltage-Tolerant Inputs/Outputs Allow
Mixed-Voltage-Mode Data Communications
Ioff Supports Partial-Power-Down Mode
Operation
Fully Configurable Dual-Rail Design Allows
Each Port to Operate Over Full 1.4-V to 3.6-V
Power-Supply Range
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
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
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 SN74AVCB164245 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 SN74AVCB164245 is designed so that the control pins (1DIR, 2DIR, 1OE, and 2OE) are supplied by VCCB.
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
PACKAGE (1)
TA
ORDERABLE PART NUMBER
FBGA – GRD
74AVCB164245ZRDR
TSSOP – DGG
Tape and reel
SN74AVCB164245GR
TVSOP – DGV
Tape and reel
SN74AVCB164245VR
Tape and reel
SN74AVCB164245KR
VFBGA – ZQL (Pb-Free)
(1)
74AVCB164245GRDR
Tape and reel
VFBGA – GQL
–40°C to 85°C
Tape and reel
FBGA – ZRD (Pb-Free)
Tape and reel
74AVCB164245ZQLR
TOP-SIDE MARKING
WB4245
AVCB164245
WB4245
WB4245
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.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2002–2005, Texas Instruments Incorporated
