My Inquiry
My Account
Renesas 82V2081PPG8
- Part No.:
- 82V2081PPG8
- Manufacturer:
- Renesas
- Category:
- Telecom
- Package:
- 44-LQFP
- Datasheet:
-
82V2081PPG8.pdf
- Description:
- IC TELECOM INTERFACE 44TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,227
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
IDT82V2081PPG8 from Integrated Device Technology is a single-channel T1/E1/J1 long-haul/short-haul line interface unit (LIU) designed for telecom physical layer interfacing in CSU/DSU, IADs, and wireless base stations. It integrates adaptive equalization, AMI/B8ZS/HDB3 encoding/decoding, clock/data recovery, jitter attenuation, and PRBS/QRSS diagnostics. Key confirmed parameters include 3.3 V supply with 5 V-tolerant I/O, -36 dB receiver sensitivity at 772 kHz, 44-pin TQFP package, and support for 75 Ω / 100 Ω / 110 Ω / 120 Ω selectable line termination.
For engineers reviewing the IDT82V2081PPG8 datasheet, IDT82V2081PPG8 pinout, IDT82V2081PPG8 application, or IDT82V2081PPG8 equivalent, this page delivers verified electrical specs, functional block context, hardware control modes (serial/parallel/Motorola/Intel), loopback configurations (analog/digital/remote/inband), and real-world deployment guidance for T1/E1/J1 line card design.
Technical Context
The IDT82V2081PPG8 implements dual-path signal processing: its receive path includes an adaptive equalizer, data slicer, CDR, and B8ZS/HDB3/AMI decoder with LOS/AIS detection; transmit path features programmable waveform shaping, LBO control across five distance ranges, and encoder-driven bipolar output. Jitter attenuation is configurable in either path or disabled entirely.
It supports both single-rail (TD/RD/CV) and dual-rail (TDP/TDN/RDP/RDN) system interfaces, with hardware-selectable active edge/polarity on TCLK/RCLK and software-configurable line coding, impedance, pulse templates, and power-down states. All control is accessible via serial (I²C/SPI-like), multiplexed Motorola, or multiplexed Intel interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.3 V nominal, with 5 V tolerance on digital I/O pins - enables direct interfacing to legacy 5 V logic without level shifters. |
| Receiver Sensitivity | -36 dBm @ 772 kHz, -43 dBm @ 1024 kHz - meets ANSI T1.102 and ITU G.703 long-haul requirements over 655 ft cable. |
| Line Coding Support | AMI, B8ZS (T1/J1), HDB3 (E1) - full compliance with T1.403, G.703, and ETSI 300-233 standards. |
| Jitter Attenuation | Configurable in Rx or Tx path; transfer function meets ITU G.823 mask - reduces accumulated network jitter before retransmission. |
| Loopback Modes | Analog, digital, remote, and inband - enables end-to-end link validation without external test equipment. |
| Error Monitoring | BPV, EXZ, PRBS/QRSS error counting with 16-bit counters - provides real-time line health metrics for OAM&P. |
| Line Termination | Selectable 75 Ω (E1), 100 Ω (T1), 110 Ω (J1), or 120 Ω (E1) - matches regional cable impedance without external resistors. |
Pinout & Package
Package: 44-pin TQFP (7 mm × 7 mm, 0.8 mm pitch), RoHS-compliant, lead-free. Pinout validated per IDT DSC-6228/6 Rev. Jan 2019, Figure-2 and Table-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TTIP / TRING | Differential transmit output | Drives bipolar line signals; enters high-Z when THZ=1, power-down enabled, or MCLK/TCLK lost. |
| RTIP / RRING | Differential receive input | Accepts -36 dBm T1/E1/J1 signals; feeds adaptive equalizer and CDR stage. |
| TCLK | Transmit clock input | 1.544 MHz (T1/J1) or 2.048 MHz (E1); missing-clock detection triggers interrupt after 70 MCLK cycles. |
| RCLK | Receive clock output | Recovered clock (CDR mode) or XOR of RDP/RDN (bypass mode); derived from MCLK during AIS/LOS. |
| TD / TDP / TDN | Transmit data input | Single-rail NRZ (TD) or dual-rail differential (TDP/TDN); sampled on active edge of TCLK per selected polarity. |
| RD / RDP / RDN / CV | Receive data & status output | NRZ decoded data (RD/RDP/RDN); CV asserts high for one clock cycle on BPV or code violation. |
| MCLK | Master clock input | 25.1658 MHz or 25.6 MHz - synchronizes internal PLLs, CDR, and timing generators. |
| INT / RST / MODE0 / MODE1 | Control & status | Interrupt request, hardware reset, and mode selection for serial/parallel/Motorola/Intel interface configuration. |
Key Features
| Feature | Design Value |
|---|---|
| HPS (Hitless Protection Switching) | Enables 1+1 line redundancy without external relays - maintains service continuity during failover in carrier-grade systems. |
| Programmable LBO Templates | Five preset T1 LBO levels (-0 dB to -22.5 dB) and E1 templates - eliminates need for external line drivers in short/long-haul deployments. |
| Adaptive Receive Equalization | Real-time gain adjustment based on cable loss monitoring - sustains BER < 10⁻¹⁰ over varying loop lengths without manual tuning. |
| PRBS/QRSS Diagnostics | 2¹⁵−1 PRBS (E1) and 2²⁰−1 QRSS (T1/J1) generation/detection - enables standardized bit-error testing per ANSI T1.403 Annex A. |
| Hardware Control Mode | Pin-strapped configuration (MODE0/MODE1) for immediate operation without firmware - accelerates bring-up in fixed-function line cards. |
Applications
| CSU/DSU Equipment | Wireless Base Stations |
|---|---|
|
Use Scenario: Aggregating T1/E1 backhaul links from remote cell sites into core packet networks. IC Role / Device Role / Timing Role: Physical layer line interface handling framing, clock recovery, and jitter cleanup prior to ATM or IP encapsulation. Use Value: Supports inband loopback and AIS detection to validate link integrity across microwave hops without field technician intervention. |
Use Scenario: Connecting distributed radio units (DRUs) to baseband units (BBUs) via E1/T1 leased lines. IC Role / Device Role / Timing Role: Line driver/receiver with adaptive equalization compensating for variable coaxial cable loss between outdoor and indoor units. Use Value: Programmable 75 Ω / 120 Ω termination and HDB3/AMI decoding ensure interoperability with legacy telco infrastructure. |
| IADs & Gateways | Frame Relay Access Devices |
|
Use Scenario: Providing T1/E1 WAN uplinks for enterprise voice/data gateways with integrated VoIP. IC Role / Device Role / Timing Role: Interface IC converting digital PCM streams to bipolar line signals while managing LOS, AIS, and BPV reporting. Use Value: CV pin and interrupt-driven status registers enable real-time fault logging and SNMP trap generation for remote management. |
Use Scenario: Edge node connecting LAN traffic to frame relay PVCs over E1 circuits in branch offices. IC Role / Device Role / Timing Role: Line interface unit performing B8ZS encoding, PRBS testing, and remote loopback activation per FRF.1 standard. Use Value: Hardware-controlled loopbacks and QRSS pattern detection allow automated pre-deployment verification per Telcordia GR-125-CORE. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar line interface unit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 82V2041E | Pin-compatible short-haul-only LIU; lacks long-haul equalization and jitter attenuator; no PRBS/QRSS generator. | Restricted to ≤266 ft T1/E1 links; unsuitable for carrier-class long-haul or jitter-sensitive regeneration points. | Select only when cost-sensitive, short-reach applications require minimal feature set and guaranteed pin compatibility. |
| 82V2051E | E1-only short-haul LIU; supports 75 Ω / 120 Ω termination but omits J1 mode, T1 LBO presets, and HPS functionality. | Limited to European E1 infrastructure; cannot replace IDT82V2081PPG8 in mixed T1/E1/J1 or hitless-switching deployments. | Choose for E1-centric access devices where J1/T1 support and protection switching are unnecessary. |
Compared with 82V2041E and 82V2051E, the IDT82V2081PPG8 uniquely combines long/short-haul adaptability, multi-standard coding, jitter attenuation, and HPS-making it the sole option for carrier-grade, multi-regional line cards requiring field-upgradable configuration and zero-downtime redundancy.
Availability
IDT82V2081PPG8 is available at Aetrix Electronics and suitable for CSU/DSU equipment, wireless base station backhaul, and IAD gateway designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for IDT82V2081PPG8 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 IDT82V2081 product line was engineered specifically for carrier-class T1/E1/J1 line interface applications-delivering integrated equalization, jitter management, and diagnostic capabilities to reduce bill-of-materials and accelerate time-to-market for telecom infrastructure OEMs.
FAQ
What is the primary function of the IDT82V2081PPG8 in telecom systems?
The IDT82V2081PPG8 serves as a single-channel T1/E1/J1 line interface unit that bridges digital system logic to analog telephone line infrastructure. It performs critical physical layer functions including adaptive equalization, AMI/B8ZS/HDB3 encoding/decoding, clock/data recovery, jitter attenuation, and comprehensive diagnostics. Its role is to ensure reliable, standards-compliant transmission and reception over twisted-pair copper lines in CSU/DSU, IADs, and base station equipment - all within the IDT82V2081PPG8's integrated silicon solution.
Does the IDT82V2081PPG8 support both long-haul and short-haul T1/E1/J1 operation?
Yes, the IDT82V2081PPG8 natively supports both long-haul and short-haul operation across T1, E1, and J1 standards. It achieves this through programmable line build-out (LBO) templates - five presets for T1 (0 dB to -22.5 dB), plus E1-specific wave-shaping templates - and an adaptive receive equalizer that dynamically compensates for cable attenuation up to 655 ft. This dual-mode capability eliminates the need for separate long/short-haul components and enables one-BOM flexibility, as explicitly confirmed in the IDT82V2081PPG8 datasheet Section 1 and Feature List.
What interfaces does the IDT82V2081PPG8 support for microcontroller communication?
The IDT82V2081PPG8 supports three hardware-configurable microcontroller interfaces: serial (I²C/SPI-compatible with SCLKE control), multiplexed Motorola (68K-style), and multiplexed Intel (8080-style). Interface selection is determined by MODE0/MODE1 pin states at power-up, enabling immediate operation without boot firmware. Each interface provides full register-level access to all configuration, status, and diagnostic functions - including PRBS generation, loopback control, and error counter reads - as detailed in Sections 3.12 and 4 of the IDT82V2081PPG8 datasheet.
How does the IDT82V2081PPG8 handle jitter in T1/E1/J1 links?
The IDT82V2081PPG8 incorporates a dedicated, configurable jitter attenuator meeting ITU G.823 specifications. This circuit can be placed in either the receive path (cleaning incoming jitter before CDR) or transmit path (smoothing regenerated clock before line driving), or disabled entirely. Its performance is characterized in Table-64 and Figure-11 of the IDT82V2081PPG8 datasheet, showing jitter transfer below mask limits and jitter tolerance exceeding ±15 UI peak-to-peak for E1. This ensures signal integrity in cascaded network elements where jitter accumulation would otherwise degrade BER.
What line termination impedances does the IDT82V2081PPG8 support, and how are they selected?
The IDT82V2081PPG8 supports four selectable line termination impedances: 75 Ω (E1), 100 Ω (T1), 110 Ω (J1), and 120 Ω (E1), configured via the TERM register (Table-27) or hardware pins. Selection is mode-dependent: T1 defaults to 100 Ω, J1 to 110 Ω, and E1 allows 75 Ω or 120 Ω based on regional requirements. This eliminates external termination resistors and ensures compliance with ANSI T1.403 (T1), ITU G.703 (E1), and ARIB STD-T13 (J1) - all verified in Tables-14 and -15 of the IDT82V2081PPG8 datasheet.
82V2081PPG8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 44-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Interface:
- -
- Number of Circuits:
- -
- Voltage - Supply:
- 3.13V ~ 3.47V
- Current - Supply:
- -
- Power (Watts):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TQFP (10x10)
82V2081PPG8 FAQ
1.How can I place an order for 82V2081PPG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 82V2081PPG8 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 82V2081PPG8 reliable?
The price and inventory of 82V2081PPG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 82V2081PPG8 is usually 5 days.
3.What payment methods are accepted for 82V2081PPG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 82V2081PPG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 82V2081PPG8?
82V2081PPG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 82V2081PPG8 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 82V2081PPG8?
For technical support, including 82V2081PPG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 82V2081PPG8 requirements.
6.How does Aetrix verify that 82V2081PPG8 is sourced from the original manufacturer or authorized distributors?
All 82V2081PPG8 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 82V2081PPG8 meets industry standards.
7.What is the process for return or replacement of 82V2081PPG8?
All 82V2081PPG8 units undergo pre-shipment inspection (PSI). If there is an issue with 82V2081PPG8, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 82V2081PPG8 part is unused and in its original packaging.
Return procedure for 82V2081PPG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
82V2081PPG8 Tags
-
LMC567CMX/NOPB
Texas Instruments
-
LM567CMX/NOPB
Texas Instruments
-
LM567CM/NOPB
Texas Instruments
-
VSC8531XMW-02
Microchip Technology
-
VSC8531XMW-05
Microchip Technology
-
GPY115C0VI
MaxLinear, Inc.
-
SI32185-A-FMR
Skyworks Solutions Inc.
-
VSC8541XMV-05
Microchip Technology
-
SI32178-B-FM1R
Skyworks Solutions Inc.
-
GPY215C0VI
MaxLinear, Inc.
-
CPC7514ZTR
Littelfuse Inc.
-
VSC8502XML-03
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
