參數(shù)資料
型號: SN74LVC2T45DCUT
廠商: TEXAS INSTRUMENTS INC
元件分類: 總線收發(fā)器
英文描述: LVC/LCX/Z SERIES, 2-BIT TRANSCEIVER, TRUE OUTPUT, PDSO8
封裝: GREEN, PLASTIC, VSSOP-8
文件頁數(shù): 12/25頁
文件大?。?/td> 607K
代理商: SN74LVC2T45DCUT
www.ti.com
DESCRIPTION/ORDERING INFORMATION (CONTINUED)
B1
DIR
5
7
A1
2
VCCA
VCCB
B2
6
A2
3
DUAL-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
SCES516I – DECEMBER 2003 – REVISED MARCH 2007
The SN74LVC2T45 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 SN74LVC2T45 is designed so that the DIR input circuit is 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, 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)
(EACH TRANSCEIVER)
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
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SN74LVC2T45DCUT 制造商:Texas Instruments 功能描述:Transceiver IC
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SN74LVC2T45QDCURQ1 功能描述:轉(zhuǎn)換 - 電壓電平 AC DualB Dual Supply Xcvr RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MLF-8