Description
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.

FEATUREs
• 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

APPLICATIONs
• 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