Renesas 82V2084PF8

Overview

IDT82V2084PF8 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 per-channel adaptive equalization, AMI/B8ZS/HDB3 encoding/decoding, jitter attenuation, and programmable line build-out (LBO) with support for 75 Ω, 100 Ω, 110 Ω, and 120 Ω terminations. Designed for CSU/DSU, IADs, and wireless base stations, it operates on a single 3.3 V supply with 5 V-tolerant digital I/O.

For engineers reviewing the IDT82V2084PF8 datasheet, IDT82V2084PF8 pinout, IDT82V2084PF8 application, or IDT82V2084PF8 equivalent, key selection criteria include per-channel LBO configurability, G.772-compliant non-intrusive monitoring, HPS-enabled 1+1 protection switching, and JTAG boundary-scan testability - all critical for carrier-grade TDM infrastructure design.

Technical Context

The IDT82V2084PF8 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 JA placement (receive or transmit path) and dual-rail/single-rail system interfacing.

Its transmit path includes B8ZS/HDB3/AMI encoder, user-programmable arbitrary pulse shaping, and waveform templates optimized for E1 (75/120 Ω), T1 (100 Ω), and J1 (110 Ω) standards. PRBS/QRSS generation/detection (2¹⁵−1 for E1, 2²⁰−1 for T1/J1) and four loopback modes (analog, digital, remote, inband) enable per-channel diagnostics without service interruption.

Key Specifications

Pinout & Package

Package: 128-pin TQFP (14 mm × 14 mm, 0.4 mm pitch), RoHS-compliant, 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 MAX5864 and AD9876, the IDT82V2084PF8 uniquely combines HPS, per-channel G.772 monitoring, and full JTAG testability in a 128-pin TQFP - making it the only option meeting carrier-grade 1+1 protection and SLA reporting requirements without added components.

Availability

IDT82V2084PF8 is available at Aetrix Electronics and suitable for CSU/DSU equipment, wireless base station backhaul, and IAD gateway applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for telecom infrastructure programs.

Supply support for IDT82V2084PF8 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 for communications and computing markets.

The IDT82V2084PF8 belongs to IDT's legacy telecom line interface product line, engineered specifically for carrier-class T1/E1/J1 physical layer termination in SDH/SONET edge, wireless infrastructure, and enterprise access equipment.

FAQ

What is the operating temperature range for the IDT82V2084PF8?

The IDT82V2084PF8 is rated for industrial temperature operation from −40°C to +85°C, validated per manufacturer specifications and tested across voltage and frequency corners. This range supports deployment in uncontrolled environments such as roadside cabinets, cell towers, and central office distribution frames where ambient temperatures exceed commercial limits. The IDT82V2084PF8 maintains full compliance with ANSI T1.403 and ITU G.703 across this range.

Does the IDT82V2084PF8 support both T1 and E1 standards simultaneously?

Yes, the IDT82V2084PF8 supports per-channel T1, E1, or J1 configuration via software control - all four channels can operate in mixed modes (e.g., two T1 + two E1). Each channel independently selects line coding (B8ZS/HDB3/AMI), termination impedance (100 Ω for T1, 75/120 Ω for E1), and LBO template. This capability is confirmed in the functional description and register map of the IDT82V2084PF8 datasheet.

How does the Hitless Protection Switching (HPS) function work in the IDT82V2084PF8?

The IDT82V2084PF8 implements HPS using internal signal routing and fast channel synchronization to switch between primary and backup lines within 15 ms - below ITU G.826-defined hitless threshold. No external relays or glue logic are required. The IDT82V2084PF8 monitors LOS and AIS status per channel and triggers automatic switchover while maintaining bitstream continuity, as verified in the HPS section of the IDT82V2084PF8 datasheet.

What clocking options does the IDT82V2084PF8 support for its jitter attenuator?

The IDT82V2084PF8 jitter attenuator accepts either the recovered clock from its CDR or the system master clock (MCLK) as reference, with placement configurable per channel in the receive or transmit path. Jitter transfer performance meets ITU G.823 mask requirements for both E1 and T1/J1 frequencies, as measured in Table-69 of the IDT82V2084PF8 datasheet. The IDT82V2084PF8 also supports JA disable mode for direct pass-through operation.

Can the IDT82V2084PF8 perform PRBS testing on individual channels?

Yes, the IDT82V2084PF8 provides independent PRBS generation and detection per channel: 2¹⁵−1 polynomials for E1 and 2²⁰−1 for T1/J1. Each channel's PRBS engine is controlled via dedicated MAINT registers (MAINT0–MAINT6), allowing simultaneous loopback testing across all four lines without cross-talk. This capability is documented in Section 3.6.3 and Table-20 of the IDT82V2084PF8 datasheet.