SY10E445JC

Specialized Overview

The SY10E445JC is a 4-bit serial-to-parallel data converter manufactured by Microchip Technology, originally designed by Micrel. It operates within the Extended 100E VEE range of –4.2V to –5.5V and supports NRZ data rates up to 2.5Gb/s. The device features differential clock and serial inputs, an on-chip clock ÷4 and ÷8 output, and asynchronous data synchronization via a SYNC input. It includes internal 75kΩ input pull-down resistors and provides a VBB reference voltage for single-ended use. The component is housed in a 28-pin PLCC package.

Specialized Feature Summary

• Integrated divide-by-4 and divide-by-8 clock outputs for system synchronization
• Dual selectable differential serial inputs enabling loopback testing capabilities
• Asynchronous data synchronization allowing start bit shifting via the SYNC input
• Mode select functionality to expand conversion from 4-bit to 8-bit using cascaded devices

Specialized Applications

• High-speed serial-to-parallel data conversion for NRZ streams
• Cascaded 1:8 demultiplexer architectures when paired with another E445 unit
• Loopback testing configurations utilizing dual serial inputs alongside parallel-to-serial converters

Specialized Procurement Notes

Verify the manufacturer origin carefully, as this component was originally produced by Micrel before acquisition by Microchip Technology. Confirm that the specific ordering suffix matches the required lead finish (Sn-Pb or Matte-Sn) and packaging type (Tube or Tape and Reel). Ensure compatibility with the extended 100E negative supply voltage requirements during integration.

Specialized Selection Notes

Select this component for applications requiring high-speed serial data demultiplexing up to 2.5Gb/s. Consider the cascading limitations if an 8-bit conversion scheme is necessary, as the maximum frequency drops significantly compared to single-device operation. Evaluate the need for differential versus single-ended inputs based on the operating clock rate, recommending differential signals above 500MHz.

Specialized Part Context

This part belongs to the SY10/100E series of logic ICs, specifically functioning as a serial-to-parallel converter. It is fully compatible with the Motorola MC10E/100E445 specifications. The device is distinct from multiplexers or clock drivers within the same family, focusing strictly on data conversion and clock division functions.

Specialized Replacement Considerations

The datasheet explicitly states full compatibility with the Motorola MC10E/100E445. Verify pinout and electrical characteristics against these equivalents before substitution.