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SN74AVC24T245 PDF预览

SN74AVC24T245

更新时间: 2024-11-22 22:59:15
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德州仪器 - TI 总线收发器输出元件
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描述
24-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS

SN74AVC24T245 数据手册

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SN74AVC24T245  
24-BIT DUAL-SUPPLY BUS TRANSCEIVER  
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS  
www.ti.com  
SCES552CFEBRUARY 2004REVISED AUGUST 2005  
FEATURES  
Control Inputs VIH/VIL Levels Are Referenced  
to VCCA Voltage  
Ioff Supports Partial-Power-Down Mode  
Operation  
VCC Isolation Feature – If Either VCC Input Is at  
GND, All Outputs Are in the High-Impedance  
State  
I/Os Are 4.6-V Tolerant  
Latch-Up Performance Exceeds 100 mA Per  
JESD 78, Class II  
Overvoltage-Tolerant Inputs/Outputs Allow  
Mixed-Voltage-Mode Data Communications  
ESD Protection Exceeds JESD 22  
– 8000-V Human-Body Model (A114-A)  
– 200-V Machine Model (A115-A)  
Fully Configurable Dual-Rail Design Allows  
Each Port to Operate Over Full 1.2-V to 3.6-V  
Power-Supply Range  
– 1000-V Charged-Device Model (C101)  
DESCRIPTION/ORDERING INFORMATION  
This 24-bit noninverting bus transceiver uses two separate configurable power-supply rails. The  
SN74AVC24T245 is optimized to operate with VCCA/VCCB set at 1.4 V to 3.6 V. It is operational with VCCA/VCCB as  
low as 1.2 V. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.2 V to 3.6 V. The  
B port is designed to track VCCB. VCCB accepts any supply voltage from 1.2 V to 3.6 V. This allows for universal  
low-voltage bidirectional translation between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes.  
The SN74AVC24T245 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 SN74AVC24T245 is designed so that the control pins (1DIR, 2DIR, 3DIR, 4DIR, 5DIR, 6DIR, 1OE, 2OE,  
3OE, 4OE, 5OE, and 6OE) are supplied by VCCA  
.
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.  
The VCC isolation feature ensures that if either VCC input is at GND, then both ports are in the high-impedance  
state.  
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.  
ORDERING INFORMATION  
TA  
PACKAGE(1)  
ORDERABLE PART NUMBER  
SN74AVC24T245GRGR  
TOP-SIDE MARKING  
LFBGA – GRG  
LFBGA – ZRG (Pb-free)  
Tape and reel  
Tape and reel  
–40°C to 85°C  
WH245  
SN74AVC24T245ZRGR  
(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.  
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.  

SN74AVC24T245 替代型号

型号 品牌 替代类型 描述 数据表
SN74AVCH24T245 TI

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