MC100LVEL32D

Counter Dividers Overview

The MC100LVEL32D is a 3.3 V ECL ÷2 divider from onsemi, functionally identical to the EL32 but operating from a 3.3 V supply. It features an asynchronous reset pin asserted on the rising edge and includes an internally generated VBB reference voltage for single-ended input biasing or AC-coupled input rebiasing. The device supports PECL mode (VCC = 3.0 V to 3.8 V, VEE = 0 V) and NECL mode (VCC = 0 V, VEE = −3.0 V to −3.8 V). Key electrical parameters include a typical propagation delay of 510 ps, a maximum toggle frequency of 2.6 GHz, and a power supply current of 35 mA at 25°C.

Counter Dividers Feature Summary

• Provides asynchronous reset functionality synchronized on the rising edge to allow system synchronization.
• Includes an internal VBB reference voltage output for use as a switching reference or AC-coupling bias.
• Features temperature compensation within the 100 Series for stable performance across operating temperatures.
• Incorporates internal input pulldown resistors to simplify external circuit design.

Counter Dividers Applications

• Clock distribution networks requiring frequency division
• Synchronization of multiple dividers in high-speed systems
• PECL/NECL logic interface circuits

Counter Dividers Procurement Notes

Verify component authenticity through authorized onsemi channels or certified distributors. Confirm RoHS compliance and Pb-free status via official documentation. Check for moisture sensitivity level requirements during storage and handling. Ensure ordering suffix matches required package type (SOIC-8 NB or TSSOP-8). Validate that the specific revision aligns with current design specifications.

Counter Dividers Selection Notes

Select this component when a 3.3 V ECL divide-by-two function is required with low propagation delay. Consider the availability of the internal VBB pin for simplified biasing in single-ended configurations. Evaluate thermal resistance values based on expected airflow conditions. Ensure compatibility with existing PECL or NECL signaling standards in the target application environment.

Counter Dividers Part Context

Part of the 100LVEL series, which offers temperature-compensated low-voltage ECLinPS devices. Functionally equivalent to the legacy EL32 but optimized for 3.3 V operation. Designed for high-speed digital applications where precise timing and signal integrity are critical.

Counter Dividers Replacement Considerations

The datasheet notes functional equivalence to the EL32. However, direct substitution requires verifying voltage levels and pinout compatibility. Contact onsemi representatives for updated recommendations as this device may be discontinued.

Counter Dividers FAQ

How should the VBB pin be handled if not used?

If the VBB pin is not utilized for biasing or reference purposes, it should be left open.

What is the purpose of the internal input pulldown resistors?

The internal pulldown resistors ensure inputs default to a defined state (low) when left open, simplifying external circuit design.