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AVCA164245 Datasheet

  • AVCA164245

  • 16 BIT DUAL SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE...

  • 15頁(yè)

  • TI

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SN74AVCA164245
16-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
www.ti.com
SCES395B 鈥?JULY 2002 鈥?REVISED OCTOBER 2005
FEATURES
鈥?/div>
鈥?/div>
Member of the Texas Instruments Widebus鈩?/div>
Family
DOC鈩?Circuitry Dynamically Changes Output
Impedance, Resulting in Noise Reduction
Without Speed Degradation
Dynamic Drive Capability Is Equivalent to
Standard Outputs With I
OH
and I
OL
of
鹵24
mA
at 2.5-V V
CC
Control Inputs V
IH
/V
IL
Levels Are Referenced
to V
CCA
Voltage
If Either V
CC
Input Is at GND, Both Ports Are in
the High-Impedance State
鈥?/div>
鈥?/div>
鈥?/div>
Overvoltage-Tolerant Inputs/Outputs Allow
Mixed-Voltage-Mode Data Communications
I
off
Supports Partial-Power-Down Mode
Operation
Fully Configurable Dual-Rail Design Allows
Each Port to Operate Over the 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
鈥?2000-V Human-Body Model (A114-A)
鈥?200-V Machine Model (A115-A)
鈥?1000-V Charged-Device Model (C101)
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
DESCRIPTION/ORDERING INFORMATION
This 16-bit (dual-octal) noninverting bus transceiver uses two separate configurable power-supply rails. The A
port is designed to track V
CCA
. V
CCA
accepts any supply voltage from 1.4 V to 3.6 V. The B port is designed to
track V
CCB
. V
CCB
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 SN74AVCA164245 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 SN74AVCA164245 is designed so that the control pins (1DIR, 2DIR, 1OE, and 2OE) are supplied by V
CCA
.
To ensure the high-impedance state during power up or power down, OE should be tied to V
CCA
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 I
off
. The I
off
circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down. If either V
CC
input is at GND,
then both ports are in the high-impedance state.
ORDERING INFORMATION
T
A
TSSOP 鈥?DGG
鈥?0擄C to 85擄C
TVSOP 鈥?DGV
VFBGA 鈥?GQL
VFBGA 鈥?ZQL
(1)
PACKAGE
(1)
Tape and reel
Tape and reel
Tape and reel
Tape and reel
ORDERABLE PART NUMBER
SN74AVCA164245GR
SN74AVCA164245VR
SN74AVCA164245KR
74AVCA164245ZQLR
TOP-SIDE MARKING
AVCA164245
WA4245
WA4245
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 is a trademark 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 漏 2002鈥?005, Texas Instruments Incorporated

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    16 BIT DUAL SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE...
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    16-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE...
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