DG412EY

Overview

The DG412EY is a monolithic quad single-pole single-throw (SPST) CMOS analog switch manufactured by Harris Corporation. It integrates four independent switches on a single chip, featuring TTL and CMOS compatible digital inputs. The device utilizes a high-voltage silicon-gate process with an epitaxial layer to prevent latch-up. It supports single or split supply operation, accommodating power supplies from +5V to 44V or ±5V to ±20V. The maximum voltage range allows for the control of 40V peak-to-peak signals. Key electrical parameters include a maximum ON-resistance of 100Ω, a maximum turn-on time of 175ns, and a maximum turn-off time of 145ns.

Feature Summary

• Four independent SPST analog switches integrated on a single monolithic CMOS chip
• TTL and CMOS compatible digital input logic levels
• High-voltage silicon-gate process technology prevents latch-up
• Bilateral switches equally matched for AC or bidirectional signal handling

Applications

• Sample and hold circuits requiring low charge injection
• Data acquisition systems utilizing single or split power supplies
• Signal routing in instrumentation equipment
• Multiplexing applications controlling high-voltage analog signals

Procurement Notes

Verify the manufacturer designation carefully, as the DG412 series was originally developed by Harris Semiconductor before being acquired by Intersil and subsequently transferred to Vishay. Ensure the specific suffix 'EY' corresponds to the required package type and lead-free compliance status for your assembly process. Cross-reference current datasheets from the active rights holder to confirm pinout compatibility and updated electrical specifications.

Selection Notes

Select this component when designing circuits that require precise control of analog signals up to 40V peak-to-peak using standard digital logic interfaces. The DG412 is suitable for applications needing fast switching speeds and low power consumption. Consider the DG413 if mixed logic polarities are required for break-before-make operations within the same package. Evaluate the 100Ω ON-resistance against your signal integrity requirements.

Part Context

The DG412 series serves as a drop-in replacement for the earlier DG211 and DG212 devices. It offers improved performance characteristics, including lower ON-resistance and faster switching times compared to its predecessors. The series is designed to simplify system design by reducing charge injection, which is critical for maintaining accuracy in sample and hold applications. The positive logic configuration distinguishes it from the negative logic DG411.

Replacement Considerations

The DG411 is functionally identical but uses negative logic. The DG413 combines both logic types on one chip. Verify availability through current distributors as original Harris manufacturing lines have ceased; check Vishay or Intersil equivalents for current production status.