MC10158L

Overview

The MC10158L is a high-speed ECL 2:1 multiplexer manufactured by onsemi. It operates with a typical propagation delay of 2.5 ns and supports a supply voltage range of 4.2 V to 5.7 V in PECL mode (VEE = 0 V) or -4.2 V to -5.7 V in NECL mode (VCC = 0 V). The device is housed in a DIP-16 package and features an output current capability of 38 mA. It is designed for applications requiring fast signal switching and data routing in high-frequency systems.

Feature Summary

• High-speed differential signaling with low propagation delay for rapid data routing
• Wide operating voltage compatibility supporting both PECL and NECL logic families
• Robust input protection with internal pull-down resistors to maintain stable states during open-input conditions

Applications

• High-frequency communication systems requiring fast signal selection
• Data acquisition systems needing rapid multiplexing of input channels
• Test and measurement equipment utilizing ECL-compatible logic interfaces

Procurement Notes

Verify the specific suffix code against official datasheets to confirm package type and temperature rating, as variations exist within the MC10158 family. Ensure the selected variant matches the required operating voltage range for your PECL or NECL design. Confirm RoHS compliance status if environmental regulations apply to your manufacturing process. Cross-reference pinouts carefully when replacing legacy components to avoid circuit misalignment.

Selection Notes

Select this component when system timing budgets require sub-nanosecond switching speeds characteristic of ECL technology. It is suitable for designs where signal integrity at high frequencies outweighs power consumption concerns. Consider the DIP-16 package constraints for PCB layout and thermal management. Evaluate whether the 38 mA drive strength meets the load requirements of downstream ECL receivers without additional buffering.

Part Context

This part belongs to the MC10/100 series of emitter-coupled logic devices, which are industry-standard components for high-speed digital applications. The '158' designation specifically identifies it as a 2:1 multiplexer function. While modern CMOS technologies offer lower power, this ECL device remains relevant in niche high-speed analog and RF mixing applications where its linear characteristics and speed are critical advantages over slower logic families.

Replacement Considerations

The MC10EL58 is a direct functional equivalent with potentially improved AC performance metrics. Verify that any substitute maintains the same ECL voltage levels and pinout configuration to ensure compatibility with existing board layouts and power supplies.