Renesas 82V2048SBBG

Overview

IDT82V2048SBBG from Integrated Device Technology (IDT) is an octal T1/E1 short-haul line interface unit (LIU) with integrated clock and data recovery, jitter attenuation, and selectable single-ended or differential receive termination for 75 Ω E1 coaxial, 100 Ω T1, and 120 Ω E1 twisted-pair applications. It supports 1.544 MHz (T1) or 2.048 MHz (E1) reference clocks, operates across –40°C to +85°C, and delivers full-channel programmable AMI/B8ZS/HDB3 encoding/decoding and hitless protection switching.

For engineers reviewing the IDT82V2048SBBG datasheet, IDT82V2048SBBG pinout, IDT82V2048SBBG application, or IDT82V2048SBBG equivalent, key selection considerations include per-channel transmit/receive jitter attenuator routing (ETSI CTR12/13, ITU G.736/G.742/G.823 compliant), G.772 non-intrusive monitoring capability, dual-rail vs. single-rail system interface configuration, and 3.3 V supply with 5 V tolerant I/O.

Technical Context

The IDT82V2048SBBG implements eight independent T1/E1 transceivers sharing a common MCLK reference and configurable control interface (hardware, serial, or parallel). Each channel integrates a digital phase-locked loop (DPLL) for clock/data recovery, programmable waveform shaping with built-in pre-equalization meeting G.703 and T1.102, and selectable jitter attenuator placement in either transmit or receive path.

It supports three system-side interface modes: single-rail with clock recovery (AMI/B8ZS/HDB3), dual-rail with clock recovery, or dual-rail with raw data slicing only. The device enables non-intrusive G.772 monitoring on any one of channels 1–7 routed to channel 0, and provides local/remote/inband loopback plus JTAG boundary scan for board-level test.

Key Specifications

Pinout & Package

Package: 144-pin Thin Quad Flat Pack (TQFP) - lead-free, RoHS-compliant, industrial temperature grade.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar T1/E1 line interface applications.

Compared with TLK2201B and MAX3395E, the IDT82V2048SBBG uniquely delivers eight-channel density, integrated jitter attenuation meeting telecom standards, and carrier-grade features like hitless protection switching and non-intrusive monitoring-making it optimal for central office, PBX, and wireless infrastructure line cards requiring high reliability and minimal footprint.

Availability

IDT82V2048SBBG is available at Aetrix Electronics and suitable for central office digital cross-connects, PBX voice gateways, and wireless base station backhaul systems requiring stable component supply, long-term lifecycle support, and industrial-temperature operation.

Supply support for IDT82V2048SBBG 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) was a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance interconnect solutions before its acquisition by Renesas Electronics in 2019.

The IDT82V2048SBBG belongs to IDT's legacy telecom line interface product line, designed specifically for carrier-grade T1/E1 short-haul physical layer interfacing in central office, access, and wireless infrastructure equipment.

FAQ

What is the primary function of the IDT82V2048SBBG in a T1/E1 system?

The IDT82V2048SBBG serves as an octal line interface unit that performs physical layer functions including clock and data recovery, B8ZS/HDB3/AMI encoding/decoding, jitter attenuation, and differential or single-ended line driving/receiving. It enables eight independent T1 or E1 spans to interface directly with transformers and framer/mapper ICs in telecom infrastructure equipment such as digital cross-connects and PBX systems.

Does the IDT82V2048SBBG support both T1 and E1 modes simultaneously?

No-the IDT82V2048SBBG operates globally in either T1 mode (1.544 MHz) or E1 mode (2.048 MHz), selected via TS[2:0] pins in hardware mode or the TS register in host mode. All eight channels must use the same line rate and encoding scheme (B8ZS for T1, HDB3 for E1) at any given time.

How does the G.772 non-intrusive monitoring work on the IDT82V2048SBBG?

The IDT82V2048SBBG allows any one of channels 1–7 to be internally routed to channel 0 for real-time signal monitoring without disrupting live traffic. This is configured via the MC[3:0] pins in hardware mode or corresponding registers in host mode, and outputs sliced or recovered data on RDP0/RDN0 for external analysis-meeting ITU-T G.772 requirements.

Can the IDT82V2048SBBG operate with a 3.3 V-only power supply?

The IDT82V2048SBBG requires separate supplies: 3.3 V for VDDIO, VDDD, and VDDA, but VDDT_n pins must be tied to either all 3.3 V or all 5 V. For T1 applications, only 5 V VDDT is supported per datasheet specification. Leaving any VDDT pin unconnected is prohibited-even for unused channels.

What are the supported host interface options for configuring the IDT82V2048SBBG?

The IDT82V2048SBBG supports three host interface modes: hardware control (using MODE[2:0], TS[2:0], LP[7:0]), serial interface (CS, SCLK, SDI, SDO, INT), and parallel interface (Intel- or Motorola-compatible, multiplexed or non-multiplexed). Mode selection is determined by MODE2/MODE1/MODE0 pin states, enabling flexible integration with microcontrollers, FPGAs, or legacy processors.