T1/E1 Line Interface

The CS61574A and CS51575 combine 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. Both devices support processor based or stand-alone operation and interface with industry standard T1 and E1 framers.The receiver uses a digital Delay-Locked-Loop which is continuously calibrated from a crystal reference to provide excellent stability and jitter tolerance. the CS61574A has a receiver jitter attenuator optimized for minimum delay in switching and transmission applications, while the CS61575 attenuator is optimized for CPE applications subject to AT&T 62411 requirements. The transmitter features internal pulse shaping and a matched, constant impedance output stage to insure signal quality on mismatched, poorly terminated lines.

• Provides analog transmission line interface for T1 and E1 applications
• Provides line driver, jitter attenuator and clock recovery functions
• Fully compliant with AT&T 62411 stratum 4 jitter requirements
• Low power consumption(typically 175mW)
• B8ZS/HDB3/AMI encoder/Decoder
• 14dB of transmitter return loss