UMW3157

Overview

The UMW3157 is a single-pole double-throw (SPDT) analog switch based on CMOS technology. It operates within a supply voltage range of 1.65V to 5.5V and supports standard CMOS logic levels. The device features low power consumption, high transmission speed, and low output impedance. It includes over-voltage protection on the select input terminal, allowing voltages up to 7V without damage. The component provides break-before-make switching to prevent short circuits and is designed for applications requiring high bandwidth and linearity.

Feature Summary

• Supports NTSC/PAL video, audio, SPDIF, and HDTV signal switching
• Includes break-before-make protection to prevent short circuits
• Features over-voltage protection on the select input terminal

Applications

• Clock switching
• Data selection switches
• Video and audio signal routing

Procurement Notes

Verify the manufacturer designation as UMW or UTD Semiconductor Co., Limited when sourcing. Confirm the package type is SC70-6 and check for the specific ordering suffix if tape and reel packaging is required. Ensure the operating environment matches the specified temperature range.

Selection Notes

Select this component for low-voltage applications requiring SPDT switching capabilities. Consider the thermal resistance value of 270 °C/W for heat dissipation planning. Verify that the load current requirements do not exceed the maximum DC limit parameters defined in the datasheet.

Part Context

This component belongs to the category of analog switches and signal circuits. It is functionally similar to other low-voltage SPDT switches used in portable electronics and communication equipment. The SC70-6 package allows for compact surface-mount designs.

Replacement Considerations

Cross-reference with SGM3157 or SG Micro Corp equivalents for potential pin-compatible alternatives. Verify electrical characteristics such as on-resistance and bandwidth before substitution.