TC7MPB9327FT(EL)

Overview

The TC7MPB9327FT(EL) is a CMOS dual multiplexer/demultiplexer bus switch designed for low voltage and low power applications. It provides bidirectional level-shifting interfaces between nodes operating at different voltage levels, supporting VCCA from 1.65 V to 5.0 V and VCCB from 2.3 V to 5.5 V. The device features an active-low Output Enable (OE) pin that isolates the bus lines when high. It includes power-down protection on the OE input, which is tolerant up to 5.5 V. The component utilizes n-type MOSFET channels and offers ESD protection meeting human body model standards of ±2000 V.

Feature Summary

• Dual SPDT multiplexer/demultiplexer architecture with common select input
• Bidirectional level-shifting capability between independent power supplies
• Active-low output enable for effective bus isolation
• Power-down protection with 5.5 V tolerance on control inputs

Applications

• Interface connections between systems operating at different voltage levels
• Bidirectional data transmission in mixed-voltage environments
• Bus switching applications requiring signal isolation via output enable

Procurement Notes

Verify the specific ordering suffix FT(EL) corresponds to the TSSOP14 package configuration as documented in the official Toshiba datasheet. Confirm that the active-low OE logic aligns with system design requirements, distinguishing it from the active-high variant. Ensure compliance with RoHS directives and verify that the supply voltage ranges meet application constraints before procurement.

Selection Notes

Select this component for designs requiring dual-supply level shifting with bidirectional data flow. The TC7MPB9327 differs from the TC7MPB9326 by utilizing an active-low output enable, whereas the latter uses active-high. Consider the maximum operating temperatures and voltage tolerances to ensure compatibility with the target system's power rails and control logic signals.

Part Context

This part belongs to the TC7MPB9326/9327 series of low voltage, low power dual SPDT supply bus switches manufactured by Toshiba Semiconductor and Storage. These devices are engineered to facilitate communication between disparate voltage domains without external level shifters. The series supports various voltage combinations including 1.8 V to 5.0 V interfaces.

Replacement Considerations

The TC7MPB9326FT(EL) serves as a functional substitute within the same series; however, it employs an active-high output enable, contrasting with the active-low enable of the TC7MPB9327. Verify logic polarity compatibility when substituting.