4-bit parallel-to-serial converter — the 100E series workhorse
The SY100E446JC TR is a 4-bit parallel-to-serial converter from Micrel's 100E series, designed for data transport applications where a narrow serial link replaces a wider parallel bus. It operates from a 4.2V to 5.5V supply rail, making it a fit for 5V nominal systems with some headroom for ripple. The interface is parallel/serial — it takes a 4-bit parallel word and shifts it out as a serial stream, or the reverse, depending on the mode pin strapping.
28-PLCC J-Lead — footprint and rework
Housed in a 28-lead PLCC with J-bend leads (package code 28-LCC J-Lead), the body measures 11.48 x 11.48 mm per the supplier device package designation. Surface-mount assembly: the J-lead footprint is standard for PLCC-28, and the part is — no tape-and-reel, so plan for tube or tray handling on the pick-and-place.