DG3157EDL-T1-GE3

Overview

The DG3157EDL-T1-GE3 is a high-speed single-pole double-throw analog switch fabricated with high-density CMOS technology. It operates on a single power rail from +1.65 V to +5.5 V and handles both analog and digital signals up to V+. Key electrical parameters include a maximum on-resistance of 11 Ω, a typical -3 dB bandwidth of 580 MHz, and a propagation delay of 4 ns at 1.65 V to 1.95 V. The device features powered-off protection, break-before-make switching, and an operating temperature range of -40 °C to +85 °C in a compact SC-70-6 package.

Feature Summary

• Built-in powered-off protection prevents abnormal current flow during power-down conditions.
• Guaranteed break-before-make switching performance eliminates signal glitches.
• Control logic inputs tolerate voltages exceeding the supply voltage up to 5.5 V.
• High electrostatic discharge (ESD) rating with 7000 V human body model protection.

Applications

• Battery-powered devices
• Consumer and computing equipment
• Instrumentation systems
• Medical equipment
• Control and automation circuits

Procurement Notes

Verify component authenticity by checking for Vishay Siliconix branding and correct part marking. Confirm RoHS compliance status through official documentation. Ensure the ordering suffix matches the required reel or cut tape packaging format. Validate that the specific batch meets the -40 °C to +85 °C temperature range specification before integration into final assemblies.

Selection Notes

Select this component for applications requiring low parasitic capacitance and high bandwidth within a minimal footprint. The single-supply operation simplifies power management compared to dual-rail alternatives. Verify that the maximum on-resistance and leakage currents align with the specific signal integrity requirements of the target circuit design.

Part Context

This device belongs to the DG3157E series of high-speed SPDT analog switches. It is designed as a direct cross-reference replacement for industry-standard parts such as the SN74LVC1G3157 and NC7SB3157. The product utilizes high-density CMOS technology to achieve fast switching speeds while maintaining low power consumption in a compact surface-mount package.

Replacement Considerations

Direct functional equivalents include the SN74LVC1G3157, NC7SB3157, NLASB3157, PI7A3157, and STG3157. Verify pin compatibility and electrical parameter alignment before substitution. Ensure the alternative component supports the required single-supply voltage range and package dimensions.

FAQ

How does the control logic handle input voltages above the supply voltage?

The control logic inputs can go over V+ up to 5.5 V, allowing compatibility with higher voltage logic levels even when the switch operates at lower supply voltages.

What is the purpose of the break-before-make feature?

Break-before-make switching ensures that the old connection is fully disconnected before the new connection is established, preventing signal overlap or short circuits during state transitions.

Does the device support bidirectional signal transmission?

Yes, the switch permits signals with amplitudes of up to V+ to be transmitted in either direction between the common port and the selected throw port.