STG4158BJR

Overview

The STG4158BJR is a high-speed CMOS low-voltage single analog SPDT switch or 2:1 multiplexer/demultiplexer fabricated in silicon gate C2MOS technology. Designed for portable applications, it operates from 1.65 to 4.5 V with low ON-resistance of 0.6 Ω typical at VCC= 4.5 V and TA= 25 °C. The SEL input threshold is compatible with 1.8 V logic levels. It features power-off and overvoltage protection, latch-up performance exceeding 300 mA per JESD 78, and ESD protection rated at 8 kV contact discharge and 15 kV air discharge per IEC-61000-4-2.

Feature Summary

• Low ON-resistance for efficient signal transmission
• Integrated weak pull-down resistor on the SEL input
• Power-off and overvoltage protection capabilities

Applications

• Portable electronic devices requiring low voltage operation
• Signal routing in battery-powered systems
• Multiplexing and demultiplexing in communication circuits

Procurement Notes

Verify the specific suffix 'BJR' against official manufacturer documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with 1.8 V control logic levels required for proper SEL input operation. Confirm that the selected component meets the necessary ESD protection standards for your specific application environment.

Selection Notes

Select this component when a single-pole dual-throw switch is needed within a 1.65 V to 4.5 V supply range. Consider the 0.6 Ω typical ON-resistance for minimal signal loss. Verify that the operating temperature range and ESD ratings align with the target system requirements before finalizing the design.

Part Context

The STG4158 belongs to a family of high-speed CMOS analog switches designed for low-voltage portable applications. It utilizes C2MOS technology to achieve low ON-resistance and high switching speeds. The device functions as either an SPDT switch or a 2:1 multiplexer/demultiplexer, controlled by a single SEL input pin.