QUAD TRANSCEIVER

The quad T1 and E1 transceiver MCMs offer a high density packaging arrangement for the DS21352/DS21552 T1 single-chip transceivers and the DS21354/DS21554 E1 single-chip transceivers. Four silicon die of one of these devices is packaged in a multi-chip module (MCM) with the electrical connections in the data sheet. All of the functions available on the DS21352/DS21552 and DS21354/DS21554 are also available in the MCM packaged version however in order to minimize package size, some signals have been deleted.

• Four completely independent T1 or E1 transceivers in one small 27mm x 27mm package
• Each transceiver contains a short and long haul line interface plus a full featured framer with alarm detection/generation, elastic-stores, hardware based signaling support, per DS0 channel control and HDLC controller
• Each multi-chip module (MCM) contains four die of
  • DS21352 (DS21Q352)
  • DS21552 (DS21Q552)
  • DS21354 (DS21Q354)
  • DS21554 (DS21Q554)

See the specific DS21352/DS21552 and DS21354/DS21554 data sheets for details on their feature set and operation

All four T1 or E1 transceivers can be concatenated into a single 8.192MHz backplane data stream

IEEE 1149.1 JTAG-Boundary Scan architecture

DS21Q352/DS21Q552 and DS21Q354/DS21Q554 are pin compatible to allow the same footprint to support T1 and E1 applications

256-pin MCM BGA package (27mm X 27mm)

Low power 5V CMOS or low power 3.3V CMOS with 5V tolerant input and outputs