The MT9171 (DSIC) and MT9172 (DNIC) are pin for pin compatible replacements for the MT8971 and MT8972, respectively. They are multi-function devices capable of providing high speed, full duplex digital transmission up to 160 kbit/s over a twisted wire pair.
They use adaptive echo-cancelling techniques and transfer data in (2B+D) format compatible to the ISDN basic rate. Several modes of operation allow an easy interface to digital telecommunication networks including use as a high speed limited distance modem with data rates up to 160 kbit/s. Both devices function identically but with the DSIC having a shorter maximum loop reach specification. The generic "DNIC" will be used to reference both devices unless otherwise noted. The MT9171/72 is fabricated in Zarlink’s ISO2-CMOS process.

*Full duplex transmission over a single twisted pair
*Selectable 80 or 160 kbit/s line rate
*Adaptive echo cancellation
*Up to 3 km (9171) and 4 km (9172)
*ISDN compatible (2B+D) data format
*Transparent modem capability
*Frame synchronization and clock extraction
*Zarlink ST-BUS compatible
*Low power (typically 50 mW), single 5 V supply

*Digital subscriber lines
*High speed data transmission over twisted wires
*Digital PABX line cards and telephone sets
*80 or 160 kbit/s single chip modem

MT9171/72AE, MT9171/72AN, MT9171/72AP, MT9171/72APR, MT9171/72ANR
MT9171/72AE1, MT9171/72AP1, MT9171/72AN1, MT9171/72APR1, MT9171/72ANR1

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