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SN74AVCA164245_09

更新时间： 2024-11-06 09:15:07
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德州仪器 - TI 总线收发器输出元件
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16-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS

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SN74AVCA164245  
16-BIT DUAL-SUPPLY BUS TRANSCEIVER  
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS  
www.ti.com  
SCES395B–JULY 2002–REVISED OCTOBER 2005  
FEATURES  
•
Member of the Texas Instruments Widebus™  
Family  
•
•
•
Overvoltage-Tolerant Inputs/Outputs Allow  
Mixed-Voltage-Mode Data Communications  
•
DOC™ Circuitry Dynamically Changes Output  
Impedance, Resulting in Noise Reduction  
Without Speed Degradation  
Ioff 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  
•
Dynamic Drive Capability Is Equivalent to  
Standard Outputs With IOH and IOL of ±24 mA  
at 2.5-V VCC  
•
•
Latch-Up Performance Exceeds 100 mA Per  
JESD 78, Class II  
•
•
Control Inputs VIH/VIL Levels Are Referenced  
to VCCA Voltage  
ESD Protection Exceeds JESD 22  
– 2000-V Human-Body Model (A114-A)  
– 200-V Machine Model (A115-A)  
If Either VCC Input Is at GND, Both Ports Are in  
the High-Impedance State  
– 1000-V Charged-Device Model (C101)  
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 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 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 VCCA  
.
To ensure the high-impedance state during power up or power down, OE should be tied to VCCA 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,  
then both ports are in the high-impedance state.  
ORDERING INFORMATION  
TA  
PACKAGE(1)  
ORDERABLE PART NUMBER  
SN74AVCA164245GR  
SN74AVCA164245VR  
TOP-SIDE MARKING  
AVCA164245  
TSSOP – DGG  
TVSOP – DGV  
VFBGA – GQL  
VFBGA – ZQL  
Tape and reel  
Tape and reel  
Tape and reel  
Tape and reel  
WA4245  
–40°C to 85°C  
SN74AVCA164245KR  
WA4245  
74AVCA164245ZQLR  
(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 is a trademark of Texas Instruments.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2002–2005, 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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