MC10E446FNR2

Overview

The MC10E446FNR2 is a 5V EnECL integrated 4-bit parallel to serial data converter manufactured by onsemi. It operates within a supply voltage range of 4.2 V to 5.7 V and supports NRZ data rates up to 1.3 Gb/s, with typical capability reaching 1.5 Gb/s. The device converts four parallel data bits (D0-D3) into a serial stream from D0 to D3. It includes internal divide-by-4 and divide-by-8 clock outputs, asynchronous synchronization via the SYNC input, and a MODE pin for cascading two units into an 8-bit configuration. Packaged in a 28-pin PLCC (J-Lead) surface-mount format.

Feature Summary

• Integrated 4-bit parallel to serial conversion with differential clock and serial inputs
• On-chip divide-by-4 and divide-by-8 clock generation capabilities
• Asynchronous data synchronization and mode select for expanding to 8-bit cascaded operation
• Internal VBB reference voltage output for single-ended input applications

Applications

• High-speed parallel to serial data conversion for NRZ streams
• Cascaded 8-bit multiplexer configurations using two devices
• Transmission and receiving paths in high-speed serial data systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and environmental compliance. The 'R2' suffix indicates tape and reel packaging. Confirm availability status as older revisions may be obsolete or subject to discontinuation notices. Ensure the procurement source provides valid traceability for the component lot.

Selection Notes

Select this component when a 4-bit parallel to serial conversion function is required at data rates up to 1.3 Gb/s. Choose the MC10E446 over the MC100E446 if temperature compensation is not strictly necessary, as the 100 series includes this feature. Ensure the design accommodates the PECL or NECL operating ranges and provides adequate thermal management for the PLCC-28 package.

Part Context

The MC10E446 belongs to the MC10E/100E446 family of 5V EnECL converters. It is designed to interface with the E445 device for complete high-speed serial data path solutions. The device features 525 transistors and meets JEDEC latchup test specifications. It is available in both standard and lead-free versions within the same PLCC-28 footprint.

Replacement Considerations

The MC100E446 is a direct functional substitute within the same family, distinguished primarily by the inclusion of temperature compensation in the 100 series. Verify that the replacement part number matches the required suffix for the desired packaging and environmental compliance.