TC7WP3125FK,LF(CT

Overview

The TC7WP3125FK is a dual-supply, advanced high-speed CMOS 2-bit bus buffer fabricated with silicon gate technology. It interfaces between low-voltage buses (1.2 V to 2.5 V) and higher-voltage buses (1.8 V to 3.6 V). The device features overvoltage-tolerant inputs and outputs up to 3.6 V, power-down protection, and an enable input for signal isolation. Operating voltage ranges include combinations such as 1.2 V to 3.3 V or 1.8 V to 2.5 V. Propagation delay varies from 6.8 ns to 30 ns depending on supply voltages. Output drive current reaches 12 mA minimum at 3.0 V. The component operates within -40°C to 125°C and is housed in an US8 package.

Feature Summary

• Dual-supply architecture enabling interface between mixed voltage systems
• Overvoltage tolerant inputs and outputs up to 3.6 V
• Power-down protection and high-impedance state isolation via OE pin
• Ultra-small US8 surface-mount package

Applications

• Interface between 1.2-V/1.5-V/1.8-V/2.5-V buses and 1.8-V/2.5-V/3.6-V buses
• Battery-driven applications such as PDAs and cellular phones
• Mixed voltage system data routing

Procurement Notes

Verify the specific ordering suffix (CT) to confirm the operating temperature range of -40°C to 85°C, as other variants support -40°C to 125°C. Ensure compatibility with the US8 package dimensions and check RoHS compliance status before integration. Confirm that the device is suitable for the intended voltage levels and signal integrity requirements.

Selection Notes

Select this component when interfacing between disparate voltage domains requiring bidirectional buffering. Consider the propagation delay specifications relative to the target bus speed. Verify that the output current capabilities meet the load requirements. Ensure the design accounts for the floating A-bus permission when OE is high.

Part Context

This part belongs to Toshiba's TC7WP series of low-voltage, low-power CMOS digital integrated circuits. It utilizes silicon gate CMOS technology for high-speed operation. The series is designed for modern portable electronics where power efficiency and small form factors are critical constraints.

Replacement Considerations

TC7WPN3125FK(T5L,F)

FAQ

What is the maximum voltage tolerance for the inputs and outputs?

All inputs and outputs are tolerant up to 3.6 V.

How does the OE pin affect the A-bus?

When OE is high, the device disables, placing outputs in a high-impedance state and permitting the A-bus to float.