SN74LVC1T45DCKRG4

IC TRANSLTR BIDIRECTIONAL SC70-6

1 Features

ESD protection exceeds JESD 22:-2000VHuman-Body Model(A114-A)200VMachine Model(A115-A)--1000V Charged-Device Model(C101)Available in the Texas Instruments NanoFree"package

Fully configurable dual-rail design allows each poto operate over the full 1.65V to 5.5V power-supprange

Vcc isolation feature - if either Vcc input is atGND, both ports are in the high-impedance state

DlR input circuit referenced to VccALow power consumption, 4μA maximum lcc+24mA output drive at 3.3Vo supports partial-power-down mode operation

Maximum data rates

420Mbps(3.3V to 5V translation)

210Mbps(translate to 3.3V)140Mbps(translate to 2.5V)-75Mbps(translate to 1.8V)

Latch-up performance exceeds 100mA per JESD78, Class ll

2 Applications

Personal electronic

Industrial

EnterpriseTelecom

Functional Block Diagram

3 Description

This single-bit noninverting bus transceiver uses twoseparate configurable power-supply rails. The A portis designed to track VccA.VccA accepts any supplyvoltage from 1.65V to 5.5VThe B port is designedto track Vcce. Vcce accepts any supply voltage from1.65V to 5.5V. This allows for universal low-voltagebidirectional translation between any of the 1.8V, 2.5V,3.3V,and 5V voltage nodes.

The SN74LVC1T45 is designed for asynchronouscommunication between two data buses.The logiclevels of the direction-control(DlR)input activateeither the B-port outputs or the A-port outputs. Thedevice transmits data from the A bus to the B buswhen the B-port outputs are activated and from theB bus to the A bus when the A-port outputs areactivated. The input circuitry is always active on bothA and B ports and must have a logic HGH or LOWlevel applied to prevent excess lcc and lccz.

The SN74LVC1T45 is designed so that the DlR inputis powered by VccA: This device is fully specifiedfor partial-power-down applications using lof. The loffcircuitry disables the outputs,preventing damagingcurrent backflow through the device whenit ispowered down.The Vcc isolation feature is designedso that if either Vcc input is at GND, then both portsare in the high-impedance state.

NanoFree"packagetechnologyisamajorbreakthrough in lC packaging concepts, using the dieas the package.