Digital Interface Circuit 24-Pin SSOP

The MT9173 (DSIC) and MT9174 (DNIC) are functionally identical to the MT9171/72 except for the addition of one feature. The MT9173/74 include a digital output pin indicating the temporal position of the received "SYNC" bit of the biphase transmission. This feature is especially useful for systems such as PCS wireless base station applications requiring close synchronization between microcells. The MT9173 and MT9174 are identical except for the MT9173 having a shorter loop reach. The generic "DNIC" is used to refer both the devices unless otherwise noted. The MT9173/74 are fabricated in Microsemi ISO2-CMOS process.

• Receive sync output pulse
• Full duplex transmission over a single twisted pair
• Selectable 80 or 160 kbit/s line rate
• Adaptive echo cancellation
• Up to 3 km (9173) and 4 km (9174) loop reach
• Integrated services digital network (ISDN) compatible (2B+D) data format
• Transparent modem capability
• Frame synchronization and clock extraction
• Microsemi® ST-BUS compatible
• Low power (typically 50 mW), single 5 V supply