Infineon Technologies PEB2255H-V13

Overview

PEB2255H-V13 from Infineon Technologies is a single-chip E1/T1/J1 framer and line interface component supporting long- and short-haul telecom applications. It integrates full receive/transmit path processing, HDLC/LAPD signaling control, jitter attenuation (±15 ppm input tolerance, 0.01 UI RMS output jitter), and H.100 bus interface for PCM highway connectivity in digital access nodes.

For engineers reviewing the PEB2255H-V13 datasheet, PEB2255H-V13 pinout, PEB2255H-V13 application, or PEB2255H-V13 equivalent, key selection criteria include E1/T1/J1 dual-mode configurability via µP interface, Sa-bit and CAS signaling support, H.100 timing alignment, and compliance with ITU-T G.703/G.704 and ANSI T1.102 standards.

Technical Context

The PEB2255H-V13 implements a fully integrated framer-synchronizer with independent E1 (2.048 Mbps) and T1/J1 (1.544 Mbps) operational modes selectable via register configuration. Its receive path includes adaptive equalization, loss-of-signal detection, and a jitter attenuator meeting ITU-T G.823 mask requirements; transmit path supports programmable line coding (HDB3/AMI/B8ZS) and elastic buffer management.

Signaling functionality covers both channel-associated (CAS) and common-channel (HDLC/LAPD) protocols, with dedicated Sa-bit access and µP-controlled serial mode operation. All digital functions-including FIFO management, interrupt generation, and boundary scan (IEEE 1149.1)-are accessible through an 8-/16-bit microprocessor interface aligned to H.100 timing.

Key Specifications

Pinout & Package

The PEB2255H-V13 is housed in a 128-pin PQFP (Plastic Quad Flat Package) with 0.4 mm pitch, measuring 20 mm × 20 mm, compliant with JEDEC MS-026. Thermal pad on underside enables enhanced power dissipation for sustained line-interface operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PMC4511-FT and DS2155, the PEB2255H-V13 uniquely delivers triple-standard (E1/T1/J1) configurability, native H.100 bus integration, and hardware-accelerated Sa-bit/CAS signaling-all within a single 5 V, 240 mW package-making it optimal for global telecom infrastructure requiring field-upgradable trunk interfaces.

Availability

PEB2255H-V13 is available at Aetrix Electronics and suitable for remote access concentrators, digital loop carriers, ISDN PRI gateways, and SS7 signal transfer points requiring stable component supply across extended product lifecycles.

Supply support for PEB2255H-V13 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 AG is a German semiconductor manufacturer specializing in power management, automotive, and communications ICs, with global R&D and manufacturing facilities.

The FALC®-LH product line was engineered specifically for carrier-grade E1/T1/J1 line interface and framer functions in digital access networks, emphasizing timing integrity, signaling flexibility, and long-haul reliability.

FAQ

What voltage levels and logic families does the PEB2255H-V13 support for its microprocessor interface?

The PEB2255H-V13 operates exclusively at +5 V ±5% and uses TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and CMOS-compatible outputs (VOH ≥ 4.45 V, VOL ≤ 0.55 V at IOL = 20 mA). It supports both 8-bit and 16-bit µP bus widths via address-line decoding and does not support 3.3 V or LVCMOS logic families.

Does the PEB2255H-V13 require external analog line drivers or receivers for E1/T1 physical layer connection?

Yes-the PEB2255H-V13 handles only digital framer, signaling, and jitter attenuation functions. External line interface units (LIUs) such as Infineon's TLE6240 or TI's THS6042 are required to drive/receive the analog E1 (75 Ω/120 Ω) or T1 (100 Ω) line signals, including transformer coupling, impedance matching, and level translation.

How is H.100 bus timing synchronized between the PEB2255H-V13 and upstream/downstream devices?

H.100 timing is derived from the recovered line clock (CLKIN) and distributed internally to H100_RXD/H100_TXD buses with programmable phase offset. The device uses an elastic buffer with ±128-bit adjustment range to absorb timing skew, ensuring zero-frame-loss operation even with ±50 ppm frequency mismatch between line and system clocks.

Can the PEB2255H-V13 be configured for mixed E1 and T1 operation on different ports simultaneously?

No-the PEB2255H-V13 is a single-port device supporting only one operational mode (E1, T1, or J1) per power-on cycle, selected via configuration register writes during initialization. Simultaneous dual-standard operation requires separate devices or a multi-port ASIC; this part does not support concurrent E1+T1 framing.