TC7QPB9307FT(EL)

Overview

The TC7QPB9307FT(EL) is a digital bus switch IC manufactured by Toshiba Semiconductor and Storage. It features four independent bidirectional channels configured as 4-bit dual-supply bus switches. The device supports low voltage operation with VCCA ranging from 1.65V to 5V and VCCB from 2.3V to 5.5V, enabling level shifting between different voltage domains. Key electrical parameters include a maximum on-resistance of 16 ohms, a maximum propagation delay of 1.2 ns, and a maximum power dissipation of 180 mW. It operates within a temperature range of -40°C to +85°C and is housed in a 14-pin VSSOP package.

Feature Summary

• Provides bidirectional level-shifting capability between two nodes operating at different voltage levels without restrictions on relative magnitude.
• Supports dual independent power supplies (VCCA and VCCB) for flexible interface connections across various logic families.
• Features low on-resistance and fast propagation delay characteristics suitable for high-speed data transmission applications.

Applications

• Level shifting interfaces between 1.8V, 2.5V, and 3.3V systems and 3.3V or 5.0V systems
• Bidirectional translation for I2C, SMBus, and other open-drain bus protocols
• General-purpose bus switching in portable and battery-powered electronic devices

Procurement Notes

Verify the specific suffix FT(EL) against the manufacturer's official datasheet to confirm packaging details such as tape and reel specifications. Ensure the component meets RoHS3 compliance requirements if mandated by your project standards. Cross-reference the ordering code with Toshiba Semiconductor and Storage documentation to validate availability and lead times prior to procurement.

Selection Notes

Select this component when designing circuits requiring bidirectional level translation between mixed-voltage domains. The dual-supply architecture allows independent power rails for input and output sides. Consider the 16-ohm on-resistance and 1.2ns delay for signal integrity analysis. The 14-pin VSSOP package is suitable for space-constrained surface-mount designs requiring industrial temperature range operation.

Part Context

This part belongs to the TC7QPB series of low-voltage, low-power CMOS digital bus switches. It is designed to replace older discrete level-shifting solutions by integrating multiple channels into a single compact IC. The series emphasizes low power consumption and high-speed performance, making it appropriate for modern portable electronics and communication interfaces requiring reliable voltage domain isolation.

FAQ

Can the TC7QPB9307FT(EL) be used for bidirectional level shifting?

Yes, the device supports bidirectional data flow, allowing signals to pass between A and B ports regardless of direction, provided external pull-up resistors are connected appropriately.

What is the maximum propagation delay for this bus switch?

The maximum propagation delay is specified as 1.2 ns, ensuring fast switching speeds for high-frequency data lines.