Renesas 82P2828BH

Overview

82P2828BH from Integrated Device Technology is a 28(+1)-channel high-density T1/E1/J1 line interface unit (LIU) designed for carrier-grade access and aggregation equipment. It integrates full receive/transmit signal conditioning, jitter attenuation, PRBS pattern generation/detection, and per-channel diagnostic monitoring with support for differential and single-ended line interfaces. Key confirmed parameters include 28 active data channels plus 1 maintenance channel, E1 (2.048 Mbps), T1 (1.544 Mbps), and J1 (1.544 Mbps) mode compatibility, and operation across –40°C to +85°C industrial temperature range.

For engineers reviewing the 82P2828BH datasheet, 82P2828BH pinout, 82P2828BH application, or 82P2828BH equivalent, this device serves as a multi-protocol physical-layer transceiver for telecom line cards requiring simultaneous T1/E1/J1 support, integrated jitter cleanup, and comprehensive loopback and error monitoring - critical for DSLAMs, MSPPs, and packet voice gateways.

Technical Context

The 82P2828BH implements independent receive and transmit paths per channel, each with programmable equalization, slicer, clock/data recovery, and encoder/decoder logic compliant with ANSI T1.102, ITU-T G.703, G.772, and G.823. Its jitter attenuator provides both receive (RJA) and transmit (TJA) jitter reduction using dual-stage PLL-based filtering.

It supports multiple microprocessor interfaces (serial, parallel Intel/Motorola, multiplexed/non-multiplexed) and includes JTAG boundary scan (IEEE 1149.1), HPS (hitless protection switching), and per-channel software reset. Clock architecture features dual reference inputs (XCLK, MCLK), free-running CLKT1/CLKE1 outputs, and cascaded recovered clock distribution.

Key Specifications

Pinout & Package

82P2828BH is housed in a 640-pin plastic ball grid array (PBGA) package measuring 27 mm × 27 mm with 1.0 mm ball pitch and standard JEDEC MO-251AC footprint. Thermal pad on underside requires solder paste stencil design per IDT AN-701.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX5865 and CDCLVC1310, the 82P2828BH delivers higher channel density, broader protocol coverage (T1/E1/J1), and deeper diagnostic capability - making it optimal for carrier-class line cards requiring scalability, interoperability, and service-level monitoring without external assist circuitry.

Availability

82P2828BH is available at Aetrix Electronics and suitable for DSLAM line cards, MSPP aggregation modules, packet voice gateways, and remote terminal cabinets requiring stable component supply across extended product lifecycles.

Supply support for 82P2828BH 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 infrastructure.

The IDT82P2828 family was engineered specifically for high-density TDM line interface applications in carrier access networks, emphasizing protocol flexibility, jitter resilience, and embedded diagnostics to reduce system validation time and field service costs.

FAQ

What protocols does the 82P2828BH support?

The 82P2828BH supports T1 (ANSI T1.102), E1 (ITU-T G.703), and J1 (Japanese JIS C 5501) line protocols with full electrical and framing compliance. Each of its 28 channels can be independently configured for any of these standards, and the +1 maintenance channel operates in E1 mode. All protocol-specific equalization, encoding, and timing parameters are embedded in the silicon and selectable via register programming.

Does the 82P2828BH include integrated jitter attenuation?

Yes, the 82P2828BH includes dual-stage jitter attenuators: a receive jitter attenuator (RJA) and transmit jitter attenuator (TJA). The RJA reduces incoming line jitter to ≤0.2 UI p-p (12 kHz–20 MHz), and the TJA cleans outgoing jitter to ≤0.15 UI p-p - both meeting GR-499-CORE requirements for SONET/SDH interworking. These functions operate independently per channel and require no external components.

What microprocessor interfaces are supported by the 82P2828BH?

The 82P2828BH supports serial (2-wire), parallel Intel (non-multiplexed/multiplexed), and parallel Motorola (non-multiplexed/multiplexed) microprocessor interfaces. Register access is fully compatible with common 8/16-bit controllers, and timing specifications for all five modes are provided in Section 8.13 of the datasheet. Address/data multiplexing is configurable per system requirement.

How is the 82P2828BH's thermal performance validated?

The 82P2828BH's thermal performance is validated per JEDEC JESD51-2, with junction temperature calculated using θ_JA = 12.5°C/W and θ_JC = 2.3°C/W. An example calculation is provided in Section 7.2 of the datasheet, confirming safe operation up to +85°C ambient with standard PCB copper pour. Heatsink evaluation guidelines are included in Section 7.3 for forced-air or passive enhancement.

Is the 82P2828BH pin-compatible with earlier IDT82P28xx variants?

No, the 82P2828BH is not pin-compatible with prior IDT82P28xx devices such as the 82P2824 or 82P2826. It uses a new 640-pin PBGA package with revised power, ground, and signal ball assignments to accommodate increased channel count and enhanced features. Migration requires PCB redesign and firmware updates to leverage new diagnostic and jitter attenuation registers.