MC10E446FN

Overview

The MC10E446FN is a 5V EnECL integrated 4-bit parallel to serial data converter manufactured by onsemi. It supports NRZ data rates up to 1.3 Gb/s and generates divide-by-4 and divide-by-8 clocks for conversion functions. The device operates in PECL mode with VCC between 4.2 V and 5.7 V (VEE = 0 V) or NECL mode with VEE between -4.2 V and -5.7 V (VCC = 0 V). It features differential clock and serial inputs, asynchronous synchronization via SYNC, and a MODE input for expanding to 8-bit cascaded configurations. The component is housed in a 28-pin PLCC package.

Feature Summary

• Integrated divide-by-4 and divide-by-8 internal clock generation
• Asynchronous data synchronization capability via dedicated SYNC pin
• Supports cascading two devices for 8-bit conversion using MODE input
• Includes VBB output reference voltage for single-ended input applications

Applications

• High-speed parallel to serial data conversion
• Cascaded 8-bit multiplexer architectures
• Transmission and receiving of high-speed serial data paths

Procurement Notes

Verify the specific ordering suffix against current manufacturer documentation to confirm package type and environmental compliance status. Confirm that the FN suffix corresponds to the standard plastic PLCC-28 rail packaging rather than tape and reel variants. Ensure compatibility with existing supply voltage levels before procurement.

Selection Notes

Select this component when a 4-bit parallel to serial conversion function is required at speeds up to 1.3 Gb/s. Choose the MC10E446FN over the MC100E446 if temperature compensation is not strictly necessary for the application environment. Ensure the design accommodates the specific PECL or NECL power supply requirements defined in the datasheet.

Part Context

This part belongs to the MC10E/100E446 family of 5V EnECL converters. It is designed to interface with companion devices like the E445 receiver. The 10 Series variant lacks the internal temperature compensation found in the 100 Series, which may influence selection based on operating temperature ranges and stability requirements.

Replacement Considerations

The MC100E446FN serves as a direct functional substitute within the same family, offering added temperature compensation. Verify that the replacement matches the required PLCC-28 footprint and electrical characteristics for the specific ECL logic family being utilized.