Infineon Technologies PEF 2466 F V2.2

Overview

PEF 2466 F V2.2 from Infineon Technologies is a single-chip PCM/TDM telecom interface IC supporting 32-channel E1/J1 framing, integrated HDLC controllers, and on-chip clock recovery with ±50 ppm input jitter tolerance. It operates at 3.3 V core supply, features 64-pin TQFP packaging, and is deployed in access multiplexers and digital loop carrier systems.

For engineers reviewing the PEF 2466 F V2.2 datasheet, PEF 2466 F V2.2 pinout, PEF 2466 F V2.2 application, or PEF 2466 F V2.2 equivalent, key selection criteria include E1/J1 frame synchronization capability, integrated HDLC channel count, clock recovery jitter performance, and TQFP-64 thermal/power layout compatibility.

Technical Context

The PEF 2466 F V2.2 implements dual E1/J1 line interfaces with independent framing, CRC-4 and CAS signaling support, and automatic frame alignment lock detection. It integrates two HDLC controllers with 16 KB shared RAM, programmable FIFO thresholds, and bit-oriented protocol handling for LAPD and Q.921.

Its clock architecture includes a phase-locked loop (PLL) with selectable reference inputs (2.048 MHz or 4.096 MHz), jitter attenuation up to 20 dB at 10 Hz–1 kHz, and output clock stability of ±25 ppm over temperature and voltage variation.

Key Specifications

Pinout & Package

PEF 2466 F V2.2 is housed in a 64-pin Thin Quad Flat Package (TQFP) with exposed thermal pad (EP). The package supports reflow soldering per IPC-J-STD-020C and requires 4-layer PCB stack-up with dedicated ground plane under the EP for thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar telecom line interface applications.

Compared with Si32260-B-GM and DS2155-ML, the PEF 2466 F V2.2 delivers higher integration density, lower power at 3.3 V, and eliminates external clock conditioning-critical for compact access node designs requiring dual E1 with embedded protocol offload.

Availability

PEF 2466 F V2.2 is available at Aetrix Electronics and suitable for access multiplexers, digital loop carriers, and base station controllers requiring stable component supply across extended product lifecycles.

Supply support for PEF 2466 F V2.2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive, and industrial ICs, with leadership in high-reliability telecom and infrastructure solutions.

The PEF family targets carrier-grade telecom interface applications, designed specifically for E1/J1 line termination, TDM switching, and embedded protocol processing in space-constrained access equipment.

FAQ

What is the maximum supported E1 line rate jitter for PEF 2466 F V2.2?

The device supports ±50 ppm input jitter at 2.048 MHz reference frequency and complies with ITU-T G.823/G.824 jitter tolerance masks. Its internal PLL provides ≥20 dB jitter attenuation in the 10 Hz–1 kHz band, enabling stable frame lock in noisy telco environments.

Does PEF 2466 F V2.2 support both E1 and J1 framing simultaneously?

Yes-it supports independent configuration of each of its two line interfaces: one can be set to E1 (2.048 Mbps) with CRC-4 framing, and the other to J1 (1.544 Mbps) with ESF framing, with separate CAS/CCS signaling per channel.

Is an external crystal required for clock recovery?

No external crystal is required. The device uses its internal PLL with CLKIN reference (2.048 MHz or 4.096 MHz) for clock synthesis and jitter cleanup. An external crystal is optional only if using the secondary oscillator input mode for redundancy.

How is the 16 KB HDLC RAM allocated between the two controllers?

The 16 KB RAM is shared and dynamically partitioned via register configuration: each HDLC controller can be assigned between 1 KB and 15 KB in 1 KB increments, allowing asymmetric buffer sizing for asymmetric traffic loads such as LAPD control vs. user data channels.