PI74STX2G4245UEX

Buffers, Drivers, Receivers, Transceivers Overview

The PI74STX2G4245UEX is a 2-bit noninverting buffer/transceiver featuring configurable dual supply voltage operation. It contains two separate supply rails: Port A (VDDA) operates from 1.65V to 3.6V, and Port B (VDDB) operates from 2.3V to 5.5V, with the constraint that VDDA must be less than or equal to VDDB. The device provides one unidirectional buffer channel (A1 to B1) and one bidirectional transceiver channel (A2/B2) controlled by a DIR pin supplied by VDDB. It supports industrial temperatures from -40°C to +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Configurable dual supply voltage architecture supporting translation between low-voltage logic levels and higher voltage systems
• Integrated power-down high-impedance state for inputs and outputs to prevent bus contention during system initialization
• High output drive capability providing robust signal integrity across varying load conditions

Buffers, Drivers, Receivers, Transceivers Applications

• Interfacing low-voltage processors with 5V peripheral buses
• Bidirectional data translation in mixed-voltage embedded systems
• Unidirectional buffering for control signal routing between different voltage domains

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the package code suffix matches the required form factor; 'U' indicates an 8-pin MSOP package. Confirm the 'EX' suffix denotes tape and reel packaging for automated assembly processes. Ensure the component meets Pb-free and Green material specifications as defined in the ordering information section of the datasheet.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a compact solution is needed for translating signals between 1.8V/3.3V logic and 3.3V/5V systems. The device offers both unidirectional and bidirectional channels within a single package, reducing board space compared to using separate buffers and transceivers. Verify that the maximum operating frequency requirements align with the specified propagation delays at the target supply voltages.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the PI74STX series of level shifters manufactured by Pericom Semiconductor Corporation, now part of Diodes Incorporated. The series utilizes advanced submicron technology to achieve high speed and low power consumption. The specific model integrates two distinct logic functions into a single small-outline package, optimizing layout density for portable electronics.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include other 2-bit level shifting buffers with similar dual-supply configurations. Check for compatible package types such as 8-pin MSOP or 12-pin TDFN equivalents from other manufacturers offering comparable voltage ranges and drive strengths.