參數(shù)資料
型號: SN74AVC1T45DBVRE4
廠商: TEXAS INSTRUMENTS INC
元件分類: 總線收發(fā)器
英文描述: AVC SERIES, 1-BIT TRANSCEIVER, TRUE OUTPUT, PDSO6
封裝: GREEN, PLASTIC, SOT-23, 6 PIN
文件頁數(shù): 12/27頁
文件大?。?/td> 909K
代理商: SN74AVC1T45DBVRE4
www.ti.com
DESCRIPTION/ORDERING INFORMATION (CONTINUED)
B
DIR
5
4
A
3
VCCA
VCCB
SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
SCES530G – DECEMBER 2003 – REVISED JANUARY 2008
The SN74AVC1T45 is designed for asynchronous communication between two data buses. The logic levels of
the direction-control (DIR) input activate either the B-port outputs or the A-port outputs. The device transmits data
from the A bus to the B bus when the B-port outputs are activated and from the B bus to the A bus when the
A-port outputs are activated. The input circuitry on both A and B ports always is active and must have a logic
HIGH or LOW level applied to prevent excess ICC and ICCZ.
The SN74AVC1T45 is designed so that the DIR input is powered 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.
NanoFree package technology is a major breakthrough in IC packaging concepts, using the die as the
package.
FUNCTION TABLE(1)
INPUT
OPERATION
DIR
L
B data to A bus
H
A data to B bus
(1)
Input circuits of the data I/Os
always are active.
LOGIC DIAGRAM (POSITIVE LOGIC)
2
Copyright 2003–2008, Texas Instruments Incorporated
Product Folder Link(s): SN74AVC1T45
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