MT8952BE

The MT8952BE is a type of HDLC protocol controller frames and formats data packets according to X.25 recommendat ions from the CCITT.

Features of the MT8952BE are:(1)formats data as per X.25 (CCITT) level-2 standards;(2)go-ahead sequence gener ation and detection;(3)single byte address recognition;(4)microprocessor port and directly accessible registers for flexible operation and control;(5)19 byte FIFO in both send and receive paths;(6)handshake signals for multiplexing data links;(7)high speed serially clocked output (2.5 Mbps);(8)ST-BUS compatibility with programmable,channel sel ection for data and separate,timeslot for control information.

The absolute maximum ratings and electrical characteristics of the MT8952BE can be summarized as:(1):supply volta ge is 4.75V min,5.0V typ and 5.25 V max;(2):input HIGH voltage is 2.4V min and VDD V max for a noise margin of 400 mV;(3):input LOW voltage is VSS V min and 0.4 V max for a noise margin of 400mV;(4):frequency of operation is 5.0 MHz max When clock input is at twice the bit rate; (5):operating temperature is -40°C 25 85°C.electrical character istics:(1)supply current (Quiescent) is 1uA typ and 10 uA when outputs unloaded and clock input (CKi) grounded;(2):supply current (Operational) is 0.4mA typ and 1.0 mA max;(3)input HIGH voltage is 2.0 V min;(4):output capacita nce is 15 pF typ.etc.