PEF 22554 HT V3.1

Telecom Overview

The PEF 22554 HT V3.1 is a QuadFALC four-port E1/T1/J1 framer and line interface unit (LIU) from Infineon Technologies, designed for network equipment such as radio network controllers and SDH/SONET ADMs. It features a unique clock generation unit accepting reference clocks between 1.02 MHz and 20 MHz, integrated analog switches for impedance matching, and crystal-less wander/jitter attenuation. The device supports software programmable T1/E1/J1 interfaces, ITU-T G.704 frame alignment, CRC-4 performance monitoring, and includes 12 HDLC controllers with FIFO buffers. It operates on dual voltage supplies of 1.8 V or 3.3 V, consumes approximately 150 mW per channel, and functions within an operating temperature range of -40°C to +85°C.

Telecom Feature Summary

• Integrated analog switches provide impedance matching and protection switching capabilities.
• Crystal-less wander and jitter attenuation compensates according to TR 62411 and ETS-TBR 12/13 standards.
• Includes twelve HDLC controllers with deep FIFO buffers for CAS signaling and system #7 support.
• Supports flexible pulse generation and receiver sensitivity exceeding specified thresholds.

Telecom Applications

• Wireless base stations
• Router systems
• Multi-service access platforms
• Digital loop carriers
• Remote access servers/concentrators

Telecom Procurement Notes

Verify the specific suffix 'HT' against official documentation to confirm package type and pinout compatibility before procurement. Confirm availability status as older revisions may be discontinued. Ensure design tools like the Configuration Assistant are compatible with the target version. Check RoHS compliance requirements for the specific manufacturing batch.

Telecom Selection Notes

Select this component when a four-channel framer and LIU solution is required for E1, T1, or J1 networks. Consider the PG-TQFP-144 package if surface mount space allows. Evaluate power consumption needs against the typical 150 mW per channel rating. Verify that the host processor interface requirements match the supported Intel or Motorola bus types.

Telecom Part Context

This part belongs to the QuadFALC family, which expands upon the FALC product line. It serves as a specialized communication interface IC for telecom applications. The device integrates framing, line interfacing, and HDLC control into a single chip, reducing bill of materials complexity for network hardware designers.

Telecom Replacement Considerations

Check for software and pin-compatible previous QuadFALC versions. Verify if other QuadFALC variants meet the specific interface and voltage requirements of the existing design without hardware modifications.