Renesas 82V2084PF

Overview

IDT82V2084PF from Integrated Device Technology is a quad-channel T1/E1/J1 line interface unit (LIU) for long-haul and short-haul telecom line conditioning. It integrates adaptive equalization, AMI/B8ZS/HDB3 encoding/decoding, per-channel jitter attenuation, and programmable line build-out (LBO) with support for 75 Ω, 100 Ω, 110 Ω, and 120 Ω terminations. It operates on a single 3.3 V supply with 5 V-tolerant digital I/O and is used in CSU/DSU, wireless base stations, and IADs.

For engineers reviewing the IDT82V2084PF datasheet, IDT82V2084PF pinout, IDT82V2084PF application, or IDT82V2084PF equivalent, key selection criteria include per-channel LBO programmability, G.772-compliant non-intrusive monitoring, HPS-enabled 1+1 protection switching, and JTAG boundary scan support - all critical for carrier-grade TDM infrastructure design.

Technical Context

The IDT82V2084PF implements four independent receive paths each featuring an adaptive equalizer to compensate cable-induced distortion, clock/data recovery (CDR), and LOS/AIS detection compliant with ANSI T1.102 and ITU G.703. Each channel supports software-selectable waveform shaping templates and arbitrary pulse adjustment.

Its transmit path includes B8ZS/HDB3/AMI encoders, programmable LBO stages, and configurable line drivers with short-circuit protection. The jitter attenuator is configurable per channel in either receive or transmit path and meets ITU G.823 jitter transfer requirements, with measured jitter tolerance exceeding ±1000 ppm for E1 and ±1500 ppm for T1.

Key Specifications

Pinout & Package

Package: 128-pin TQFP (14 mm × 14 mm, 0.4 mm pitch), industrial temperature range (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT82V2084PF, the MAX3395E offers lower integration and no HPS or per-channel jitter attenuation, making it suitable only for basic E1 termination. The TLK2201B serves a completely different protocol stack and cannot replace IDT82V2084PF in TDM line interface roles.

Availability

IDT82V2084PF is available at Aetrix Electronics and suitable for CSU/DSU equipment, wireless base stations, and IADs requiring stable component supply across extended product lifecycles and industrial temperature operation.

Supply support for IDT82V2084PF 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) is a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance interconnect solutions for communications and computing markets.

The IDT82V2084PF belongs to IDT's legacy telecom line interface product line, designed specifically for carrier-grade TDM infrastructure requiring multi-standard (T1/E1/J1), multi-haul (short/long), and hitless protection capabilities.

FAQ

What is the primary function of the IDT82V2084PF in telecom systems?

The IDT82V2084PF functions as a quad-channel T1/E1/J1 line interface unit that conditions, encodes/decodes, and monitors digital telecommunication line signals. It performs adaptive equalization, clock/data recovery, B8ZS/HDB3/AMI processing, and per-channel jitter attenuation - enabling reliable physical-layer connectivity in CSU/DSUs, base stations, and gateways. Its design directly addresses carrier requirements for standards compliance, redundancy, and diagnostics.

Does the IDT82V2084PF support both short-haul and long-haul line configurations?

Yes, the IDT82V2084PF supports both short-haul and long-haul operation per channel via programmable line build-out (LBO) and selectable waveform templates. It exceeds receiver sensitivity requirements for both modes: –36 dBm at 772 kHz (long-haul T1/J1) and –43 dBm at 1024 kHz (long-haul E1), with automatic cable attenuation indication and adaptive receive sensitivity adjustment.

How does the IDT82V2084PF implement Hitless Protection Switching (HPS)?

The IDT82V2084PF implements HPS through integrated hardware logic that coordinates dual-line monitoring and seamless channel switchover without external relays. When a failure (e.g., LOS or AIS) is detected on the active line, the device switches to the protected line within <50 ms while maintaining data integrity - enabled by synchronized jitter attenuators and shared clock domains across both paths.

What line coding standards does the IDT82V2084PF support?

The IDT82V2084PF supports B8ZS for T1, HDB3 for E1, and AMI for J1 - all configurable per channel via software registers. It performs full line encoding and decoding, including bipolar violation (BPV) detection, excess zero (EXZ) monitoring, and PRBS/QRSS pattern generation and error counting aligned with ITU-T and ANSI standards.

Is the IDT82V2084PF compatible with JTAG-based production testing?

Yes, the IDT82V2084PF includes a fully compliant IEEE 1149.1 JTAG Test Access Port (TAP) with TCK, TMS, TDI, TDO, and TRST pins. It supports boundary scan testing, device identification, and in-system programming - enabling automated PCB test coverage and manufacturing defect detection without requiring additional test fixtures.