Renesas 82V2108PX

Overview

82V2108PX from Integrated Device Technology is an octal T1/E1/J1 framer IC designed for telecom line interface systems, supporting eight independent E1, T1, or J1 channels with integrated HDLC receivers/transmitters, PRBS generator/detector, jitter attenuators, and full alarm monitoring. Key confirmed parameters include 8-channel framing, 2.048 MHz (E1) / 1.544 MHz (T1/J1) data rates, 128-pin PQFP package, -40°C to +85°C industrial temperature range, and compliance with ITU-T G.704, G.706, G.732, and ANSI T1.107 standards.

For engineers reviewing the 82V2108PX datasheet, 82V2108PX pinout, 82V2108PX application, or 82V2108PX equivalent, this device serves as a multi-protocol digital framer for carrier-grade access equipment requiring precise frame synchronization, CAS/RBS handling, inband loopback detection, and real-time performance monitoring across all eight channels.

Technical Context

The 82V2108PX implements independent frame processors per channel for simultaneous E1, T1, and J1 operation, with configurable clocking modes including receive/transmit master/slave and multiplexed interfaces. It integrates dedicated hardware blocks for HDLC, bit-oriented message handling (T1/J1 only), elastic store buffering, and V5.2 link support in E1 mode.

Each channel supports full alarm detection (RED, AIS, LOS), CRC multi-frame and CAS signaling multi-frame alignment in E1, plus Super Frame (SF) and Extended Super Frame (ESF) synchronization in T1/J1. Jitter attenuation is implemented via dual-path RJAT/TJAT circuits meeting ITU-T G.823/G.824 transfer and tolerance requirements.

Key Specifications

Pinout & Package

82V2108PX is housed in a 128-pin PQFP (Plastic Quad Flat Pack) package with 0.65 mm lead pitch and exposed thermal pad. Pin functions are defined per channel group (CH0–CH7), with dedicated clock inputs (RSCK/TSCK), frame sync (RFS/TFS), data buses (RSDn/TSDn), and control signals (MRSD/MRSD, RSSIGn/MRSSIG).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal framer applications.

Compared with 82V2108PX, the 82V2108B offers identical electrical behavior in a thermally superior PBGA package, while the 82V2109PX adds J1-specific enhancements and wider frequency tolerance-neither is pin-compatible, requiring layout revision for migration.

Availability

82V2108PX is available at Aetrix Electronics and suitable for DSLAM line cards, wireless backhaul radios, central office multiplexers, and enterprise PRI gateways requiring stable component supply and long-term industrial temperature support.

Supply support for 82V2108PX 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

Integrated Device Technology (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance interconnect solutions.

The IDT82V2108 product line delivers multi-protocol digital framers for telecom infrastructure, targeting carrier-class access equipment needing concurrent T1/E1/J1 support with hardware-accelerated protocol handling and jitter resilience.

FAQ

What is the primary function of the 82V2108PX in telecom systems?

The 82V2108PX is an octal T1/E1/J1 framer IC that performs frame alignment, synchronization, alarm detection, and payload extraction for eight independent digital telephony lines. It handles both E1 (2.048 Mbps) and T1/J1 (1.544 Mbps) protocols with hardware support for HDLC, CAS/RBS, V5.2, and PRBS testing. Its role is to ensure bit-accurate, low-jitter framing in carrier-grade access equipment such as DSLAMs and multiplexers.

Does the 82V2108PX support both master and slave clock modes?

Yes, the 82V2108PX supports both master and slave clock modes per channel for both receive and transmit paths. In receive master mode, it generates its own frame sync and sample clocks; in slave mode, it locks to external RSCK/RFS inputs. Transmit master mode provides TSCK/TFS outputs for downstream timing distribution, while slave mode accepts external TSCK for synchronization to upstream sources - all configurable independently per channel in the 82V2108PX.

What package options are available for the 82V2108PX?

The 82V2108PX is specifically offered in a 128-pin plastic quad flat pack (PQFP) package with 20 mm × 20 mm body size and 0.65 mm lead pitch. This differs from the pin-compatible 82V2108B variant, which uses a 144-pin PBGA package. The 82V2108PX's PQFP form factor supports standard surface-mount assembly and is optimized for cost-sensitive, thermally moderate telecom line card applications.

How does the 82V2108PX handle jitter in E1 and T1/J1 applications?

The 82V2108PX incorporates dedicated receive and transmit jitter attenuators (RJAT/TJAT) meeting ITU-T G.823 and G.824 specifications. In E1 mode, it achieves ≤0.2 UI peak-to-peak jitter transfer at 10 Hz–100 kHz and tolerates up to ±100 ppm frequency deviation. In T1/J1 mode, jitter transfer remains within mask limits up to 20 kHz, ensuring clean clock recovery and stable frame generation - critical for maintaining BER integrity in the 82V2108PX's target applications.

Can the 82V2108PX be used in mixed T1 and E1 configurations simultaneously?

Yes, the 82V2108PX supports per-channel protocol selection, allowing any combination of T1, E1, and J1 modes across its eight channels. Each channel's mode is configured independently via register settings, enabling mixed-mode operation - for example, four E1 and four T1 lines on a single 82V2108PX device. This flexibility eliminates the need for separate framer ICs in heterogeneous network edge deployments.