TC7USB31FK(TE85L,F

Overview

The TC7USB31FK is a high-speed CMOS dual SPST USB switch manufactured by Toshiba Semiconductor and Storage. It operates within a power supply voltage range of 2.3 to 3.6 V. The device features low ON-resistance, typically 4.5 Ω at VCC = 3 V, with an ON-capacitance of 4 pF. It includes power-down protection for inputs and ESD protection rated at ±200V (machine model) and ±2000V (human body model). The component is housed in an SSOP8 package.

Feature Summary

• Dual single-pole single-throw (SPST) architecture designed specifically for USB signal routing applications
• Low on-resistance and minimal capacitance characteristics facilitate high-speed data transmission integrity
• Integrated power-down protection ensures input pins remain safe during system power-off states
• Robust electrostatic discharge tolerance protects internal circuitry from static damage events

Applications

• Portable electronic devices requiring USB port switching
• Mobile phones utilizing USB connectivity
• Digital cameras with USB interfaces
• Personal digital assistants (PDAs)

Procurement Notes

Verify the specific ordering suffix TE85L,F against official Toshiba documentation to confirm packaging details. Ensure compatibility with the required operating voltage range of 2.3 to 3.6 V. Confirm that the SSOP8 package dimensions align with the target PCB layout constraints before finalizing procurement decisions.

Selection Notes

Select this component when designing circuits requiring dual USB channel switching within low-voltage environments. The low ON-resistance and capacitance make it suitable for maintaining signal quality in high-speed data lines. Ensure the design accommodates the specified ESD protection levels and power-down protection requirements for robust operation.

Part Context

This part belongs to the TC7USB series of CMOS digital integrated circuits produced by Toshiba Semiconductor and Storage. These switches are engineered for portable electronics where space and power efficiency are critical. The dual SPST configuration allows independent control of two separate signal paths, commonly used for managing USB D+ and D- lines in compact mobile devices.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided source material.