Product Summary

The PEF2256HV is a framer and line interface component, which is designed to fulfill all required interfacing between analog E1/T1/J1 lines and the digital PCM system highway, H.100/H.110 or H-MVIP bus for world market telecommunication systems.

Parametrics

PEF2256HV absolute maximum ratings: (1)Ambient temperature under bias: -40 to +85 ℃; (2)Storage temperature: -65 to +125 ℃; (3)Moisture Level 3 temperature: +225 ℃; (4)Supply voltage (pads, digital): -0.5 to 4.50 V; (5)Supply voltage (core, digital): -0.5 to 2.40 V; (6)Supply voltage (PLL, analog): -0.5 to 4.50 V; (7)Supply voltage (receiver, analog): -0.5 to 4.50 V; (8)Supply voltage (transmitter, analog): -0.5 to 4.50 V; (9)Receiver input signal: -0.8 to 4.50 V; (10)Voltage on any pin: -0.5 to 4.50 V except VDDC, RL1/RL2.

Features

PEF2256HV features: (1)High-density, generic interface for all E1/T1/J1 applications; (2)Analog receive and transmit circuits for long-haul and short-haul applications; (3)E1 or T1/J1 mode selectable; (4)Data and clock recovery using an integrated digital phase-locked loop; (5)Maximum line attenuation up to -43 dB at 1024 kHz (E1) and up to -36 dB at 772 kHz (T1/J1); (6)Programmable receive equalizer characteristic; (7)Software-selectable receive line termination; (8)Programmable transmit pulse shapes for E1 and T1/J1 pulse masks.

Diagrams

PEF2256HV logic diagram

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