The DS2175 is a lowpower CMOS elasticstore memory optimized for use in primary rate telecommunications transmission equipment. The device serves as a synchronizing element between async data streams and is compatible with North American (T11.544 MHz) and European (CEPT2.048 MHz) rate networks. The chip has several flexible operating modes which eliminate support logic and hardware currently required to interconnect parallel or serial TDM backplanes. Application areas include digital trunks, drop and insert equipment, digital crossconnects (DACS), private network equipment and PABXtocomputer interfaces such as DMI and CPI.