EL2252CM

Overview

The EL2252CM is a dual high-speed comparator manufactured by Elantec. It features a propagation delay of 7 nanoseconds and operates with input voltages up to 10V while maintaining accurate transmission delay. The device supports power supply voltages ranging from 5.2V to 18V, accommodating ECL and CMOS logic levels. It includes internal hysteresis of 60 millivolts to prevent oscillation and provides output swings compatible with TTL or CMOS standards depending on pin configuration.

Feature Summary

• Fast response time with 7 nanosecond propagation delay
• Internal 60 millivolt hysteresis for noise immunity
• Compatible with ECL and CMOS input voltage ranges
• Adjustable output swing for TTL or CMOS logic levels

Applications

• ECL to TTL translation in digital systems
• High-speed pulse detection circuits
• Voltage monitoring applications requiring fast response

Procurement Notes

Verify the manufacturer designation as Elantec matches current corporate ownership structures. Confirm the CM suffix indicates commercial temperature range specifications. Ensure the package type aligns with your PCB footprint requirements. Check for RoHS compliance status if required by your manufacturing standards. Validate that the dual comparator configuration meets your circuit density needs.

Selection Notes

Select this component when system timing requires propagation delays near 7 nanoseconds. Consider the 18V maximum supply voltage for high-voltage signal interfacing. The adjustable output stage allows flexibility between TTL and CMOS loads. Internal hysteresis reduces the need for external components in noisy environments. Verify input common-mode voltage ranges match your signal sources.

Part Context

The EL2252CM belongs to the EL2252 family of dual comparators designed for high-speed digital applications. It replaces traditional emitter-coupled logic comparators and attenuators. The device integrates functions typically requiring multiple discrete components. It is suitable for applications demanding precise timing and high input impedance.

FAQ

How is the output voltage level determined?

The output swing adjusts based on HYS pin connection. Connecting the HYS pin to ground limits the output to TTL levels, while leaving it open allows CMOS-level output swings.

What is the purpose of the internal hysteresis?

The internal 60 millivolt hysteresis prevents output oscillation caused by noise or slow-rising input signals within the linear region of the comparator.