PEF 22554 HT V2.1

Telecom Overview

The PEF 22554 HT V2.1 is a QuadFALC four-port E1/T1/J1 framer and line interface unit (LIU) manufactured by Infineon Technologies. It integrates four independent analog line interfaces, frame alignment units, and HDLC controllers within a PG-TQFP-144 package measuring 20x20 mm with a 0.5 mm pitch. The device supports dual voltage power supplies of 1.8 V and 3.3 V or single voltage 3.3 V operation. It features a clock generation unit accepting reference clocks from 1.02 MHz to 20 MHz and provides software programmable T1/E1/J1 functionality. Receiver sensitivity exceeds -36 dB at 772 kHz and -43 dB at 1024 kHz.

Telecom Feature Summary

• Integrates four independent long haul/short haul line interface units with integrated analog switches for impedance matching and protection switching.
• Includes ITU-T G.704 frame alignment/synthesis supporting multiple programmable formats including CRC Multi-frame, F4, F12, and ESF.
• Contains twelve HDLC controllers with 128-byte deep FIFO buffers each, supporting CAS signaling and System #7.
• Features crystal-less wander and jitter attenuation/compensation compliant with TR 62411 and ETS-TBR 12/13 standards.

Telecom Applications

• Wireless base stations
• SONET/SDH Add/Drop multiplexers
• Multi-service access platforms
• Digital loop carriers

Telecom Procurement Notes

Verify the specific suffix HT against official Infineon documentation to confirm the PG-TQFP-144 package type. Confirm that the V2.1 revision matches the required design specifications. Check current product status as older revisions may be discontinued. Ensure compatibility with existing system bus interfaces before procurement.

Telecom Selection Notes

Select this component when a four-channel E1/T1/J1 solution is required. Compare the PG-TQFP-144 package against the LBGA-160 variant if protection switching is needed. Verify that the 1.8 V/3.3 V dual voltage supply meets system power constraints. Ensure the microprocessor interface requirements align with Intel or Motorola type 8/16-bit standards.

Telecom Part Context

This part belongs to the QuadFALC family, an addition to Infineon's FALC series of advanced E1/T1/J1 components. It is designed to be software and pin compatible with previous QuadFALC versions. The device is optimized for network equipment such as Radio Network Controllers and PBX systems.

Telecom Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Infineon technical support for cross-reference information regarding newer revisions or alternative packages within the QuadFALC family.