General Description

The CS61577 is a drop-in replacement for the CS61574, and combines the complete analog transmit and receive line interface for T1 or E1 applications in a low power, 28-pin device operating from a +5V supply. The CS61577 supports processor-based or standalone operation and interfaces with industry standard T1 and E1 framers.

Features

• Provides Analog Transmission Line Interface for T1 and E1 Applications

• Drop-in Replacement for CS61574 with the Following Enhancements:

- Lower Power Consumption

- Transmitter Short-Circuit Current Limiting

- Greater Transmitter Immunity to Line Reflections

- Software Selection Between 75Ω and 120Ω E1 Output Options

- Internally Controlled E1 Pulse Width

- B8ZS/HDB3/AMI Encoder/Decoder

Applications

• Interfacing Network Equipment such as DACS and Channel Banks to a DSX-1 Cross Connect

• Building Channel Service Units