The DS2176 is a lowpower CMOS device specifically designed for synchronizing receive side loop timed Tcarrier data streams with system side timing. The device has several flexible operating modes which simplify interfacing incoming data to parallel and serial TDM backplanes. The device extracts, buffers and integrates ABCD signaling; signaling updates are prohibited during alarm or slip conditions. The buffer replaces extensive hardware in existing applications with one "skinny" 24lead package. Application areas include digital trunks, drop and insert equipment, transcoders, digital crossconnects (DACS), private network equipment and PABXtocomputer interfaces such as DMI and CPI. 1 of 15