TC74VCX257FTEL

Overview

The TC74VCX257FTEL is a low-voltage quad 2-channel multiplexer manufactured by Toshiba Semiconductor and Storage. It operates within a supply voltage range of 1.2 V to 3.6 V, supporting systems at 1.5 V, 1.8 V, 2.5 V, or 3.3 V. The device features 3.6-V tolerant inputs and outputs with power-down protection. Propagation delay ranges from 3.0 ns (max) at 3.0–3.6 V to 40.0 ns (max) at 1.2 V. Output drive current is ±24 mA (min) at 3.0 V. It utilizes a TSSOP-16 package and supports an operating temperature range of -40 °C to 125 °C for units manufactured after April 2020.

Feature Summary

• Low-voltage operation across a wide supply range from 1.2 V to 3.6 V
• High-speed data routing with propagation delays as fast as 3.0 ns
• 3.6-V tolerant inputs and outputs with integrated power-down protection
• Robust output drive capability reaching ±24 mA minimum

Applications

• Data routing in 1.5 V, 1.8 V, 2.5 V, or 3.3 V digital systems
• Signal selection in low-power CMOS logic circuits
• Level shifting applications utilizing overvoltage tolerant I/Os

Procurement Notes

Verify the manufacturing date against the April 2020 threshold to confirm compliance with the extended -40 °C to 125 °C operating temperature specification. Ensure input and output voltages remain within the 3.6 V tolerance limit to prevent damage. Confirm that unused inputs are tied to VCC or GND to maintain stable operation and prevent undefined states.

Selection Notes

Select this component when designing systems requiring high-speed multiplexing at low supply voltages down to 1.2 V. It is suitable for applications needing 3.6-V tolerant interfaces to interface with higher voltage logic levels safely. Consider the specific propagation delay requirements relative to the chosen supply voltage, as performance varies significantly between 1.2 V and 3.6 V operation.

Part Context

This part belongs to the TC74VCX series of low-voltage CMOS logic ICs from Toshiba. The VCX family is engineered for high-speed operation while maintaining low power dissipation, making it ideal for portable and battery-operated devices. The TC74VCX257 specifically provides four independent 2-to-1 multiplexers with common select and output enable controls.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.