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Home > Products > Integrated Circuits (ICs) > Interface > Telecom

Renesas 82V2042EPFG8

Name: 82V2042EPFG8
Brand: Renesas
SKU: 82V2042EPFG8
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 82V2042EPFG8

Manufacturer:: Renesas

Category:: Telecom

Package:: 80-LQFP

Datasheet:: 82V2042EPFG8.pdf

Description:: IC TELECOM INTERFACE 80TQFP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

82V2042EPFG8 from IDT is a dual-channel T1/E1/J1 short-haul line interface unit (LIU) performing clock/data recovery, AMI/B8ZS/HDB3 encoding/decoding, adaptive equalization, and jitter attenuation in telecom access equipment. It supports per-channel 75 Ω, 100 Ω, 110 Ω, or 120 Ω line termination, programmable LOS detection down to –20 dB, and hardware/software control via JTAG, serial, or parallel interfaces. Used in CSU/DSU, IADs, and wireless base stations.

For engineers reviewing the 82V2042EPFG8 datasheet, 82V2042EPFG8 pinout, 82V2042EPFG8 application, or 82V2042EPFG8 equivalent, key selection criteria include dual-channel T1/E1/J1 switchability, HPS-enabled 1+1 protection without relays, 3.3 V supply with 5 V-tolerant I/O, G.772-compliant non-intrusive monitoring, and PRBS/QRSS generation/detection with 2¹⁵–1 and 2²⁰–1 polynomials.

Technical Context

The 82V2042EPFG8 integrates two independent T1/E1/J1 receive and transmit paths, each with configurable line termination impedance, adaptive equalizer, and selectable jitter attenuator placement (receive or transmit path). Its CDR recovers clock and data from bipolar line signals while supporting B8ZS, HDB3, and AMI coding schemes across all three standards.

Control is implemented through register-mapped software interfaces (serial/parallel) or hardware pins (MODE[1:0], TERMn, JA[1:0]), enabling real-time reconfiguration of pulse shaping templates, loopback modes (analog/digital/remote/inband), and error counting (BPV, excess zero, PRBS/QRSS). JTAG boundary scan supports production test and debug.

Key Specifications

Parameter	Value and Actual Design Meaning
Channels	Dual independent T1/E1/J1 line interfaces with per-channel configuration
Line Coding Support	B8ZS (T1/J1), HDB3 (E1), AMI (all); selectable per channel via registers
Receive Sensitivity	Up to –20 dBm (Host Mode only) enabled by adaptive equalizer
Jitter Attenuation	Configurable position (RX/TX path) or disabled; meets ITU-T G.823 jitter transfer requirements
Loopback Modes	Analog, digital, remote, and inband - each independently controllable per channel
Error Monitoring	16-bit BPV, excess zero, PRBS/QRSS counters with real-time status reporting
Power Supply	Single 3.3 V core supply; digital I/O pins tolerate up to 5 V

Pinout & Package

82V2042EPFG8 is housed in an 80-pin TQFP package (12 mm × 12 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are fully documented in IDT's DSC-6774/1 datasheet, including dual-channel analog line drivers (TTIP1/TRING1, TTIP2/TRING2), clock inputs (TCLK1/RCLK1/MCLK), JTAG interface (TCK/TMS/TDI/TDO), and system control pins (MODE[1:0], TERM1/TERM2, JA[1:0]).

Pin/Terminal	Circuit Role	Design Meaning
TTIP1 / TRING1 TTIP2 / TRING2	Differential line driver outputs	Transmit bipolar tip/ring signals for Channel 1 and 2; support high-impedance state via THZ pin or TCF1 register bit
RCLK1 / RCLK2 TCLK1 / TCLK2	Receive/transmit clock inputs	Provide timing reference for data recovery and transmission; loss >70 MCLK cycles triggers LOS assertion
TERM1 / TERM2	Hardware line termination select	Set per-channel line impedance: 75 Ω, 100 Ω, 110 Ω, or 120 Ω (matches E1/T1/J1 standards)
JA1 / JA0	Jitter attenuator configuration	Select position: RX path, TX path, or disabled - critical for meeting jitter tolerance specs per ITU-T G.823
MONT1 / MONT2	G.772 monitor enable	Enable non-intrusive line monitoring per ITU-T G.772 for maintenance without service interruption

Key Features

Feature	Design Value
Hitless Protection Switching (HPS)	Enables 1+1 redundancy without external relays or service interruption during failover
Programmable wave-shaping templates	Supports E1 (75/120 Ω), T1 (0–655 ft), and J1 (0–655 ft) pulse profiles per channel via register-controlled PULSn[3:0]
PRBS/QRSS generation & detection	2¹⁵–1 polynomial for E1, 2²⁰–1 for T1/J1 - enables full link integrity testing without external pattern generators
Adaptive equalization	Extends receive sensitivity to –20 dBm and allows programmable LOS threshold adjustment in Host Mode
5 V-tolerant digital I/O	Allows direct interfacing with legacy 5 V microcontrollers or FPGAs without level shifters

Applications

CSU/DSU Equipment	IAD (Integrated Access Device)
Use Scenario: Aggregating T1/E1 lines into packet-based backhaul networks at customer premises. IC Role / Device Role / Timing Role: Dual-channel LIU handling line framing, clock recovery, and bipolar signal conditioning for synchronous TDM-to-IP conversion. Use Value: Eliminates need for discrete line transformers and external equalizers while supporting both North American and European line standards in one device.	Use Scenario: Providing voice and data services over single T1/E1 connection in SMB gateways. IC Role / Device Role / Timing Role: Physical layer interface managing line signaling, AIS/LOS detection, and PRBS-based diagnostics for service assurance. Use Value: Enables carrier-grade SLA monitoring via G.772-compliant non-intrusive line monitoring and real-time error counters.
Wireless Base Stations	Frame Relay Access Devices
Use Scenario: Backhauling E1/T1 traffic from remote cell sites to central switching nodes. IC Role / Device Role / Timing Role: Short-haul line interface providing robust clock/data recovery and adaptive equalization over varying cable lengths and environmental conditions. Use Value: Maintains signal integrity across long copper runs using programmable pulse shaping and adjustable LOS thresholds.	Use Scenario: Connecting enterprise LANs to frame relay networks via E1/T1 leased lines. IC Role / Device Role / Timing Role: Line interface unit performing AMI/B8ZS/HDB3 decoding, jitter attenuation, and inband loopback for remote troubleshooting. Use Value: Reduces field service time through integrated diagnostic capabilities including remote loopback activation and BPV error logging.

CSU/DSU Equipment

IAD (Integrated Access Device)

Use Scenario: Aggregating T1/E1 lines into packet-based backhaul networks at customer premises.

IC Role / Device Role / Timing Role: Dual-channel LIU handling line framing, clock recovery, and bipolar signal conditioning for synchronous TDM-to-IP conversion.

Use Value: Eliminates need for discrete line transformers and external equalizers while supporting both North American and European line standards in one device.

Use Scenario: Providing voice and data services over single T1/E1 connection in SMB gateways.

IC Role / Device Role / Timing Role: Physical layer interface managing line signaling, AIS/LOS detection, and PRBS-based diagnostics for service assurance.

Use Value: Enables carrier-grade SLA monitoring via G.772-compliant non-intrusive line monitoring and real-time error counters.

Wireless Base Stations

Frame Relay Access Devices

Use Scenario: Backhauling E1/T1 traffic from remote cell sites to central switching nodes.

IC Role / Device Role / Timing Role: Short-haul line interface providing robust clock/data recovery and adaptive equalization over varying cable lengths and environmental conditions.

Use Value: Maintains signal integrity across long copper runs using programmable pulse shaping and adjustable LOS thresholds.

Use Scenario: Connecting enterprise LANs to frame relay networks via E1/T1 leased lines.

IC Role / Device Role / Timing Role: Line interface unit performing AMI/B8ZS/HDB3 decoding, jitter attenuation, and inband loopback for remote troubleshooting.

Use Value: Reduces field service time through integrated diagnostic capabilities including remote loopback activation and BPV error logging.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
82V2082PFG	Long-haul/short-haul dual-channel LIU; higher power consumption; supports extended distance operation beyond 655 ft	Targeted at longer copper runs and repeater-based networks where signal degradation exceeds short-haul limits	Choose 82V2082PFG when operating beyond 655 ft or requiring long-haul compliance (ANSI T1.101, ITU-T G.703 Annex A)
82V2052EPFG	E1-only short-haul LIU; no T1/J1 support; smaller feature set (no HPS, no QRSS, no dual-rail interface)	Cost-optimized deployments limited to E1 infrastructure with fixed 75/120 Ω termination	Choose 82V2052EPFG for E1-only systems where T1/J1 flexibility and advanced diagnostics are unnecessary

Compared with 82V2082PFG and 82V2052EPFG, the 82V2042EPFG8 uniquely balances multi-standard T1/E1/J1 support, HPS capability, and comprehensive diagnostics in a short-haul-optimized footprint - making it optimal for mixed-standard access equipment where board space and BOM simplification are critical.

Availability

82V2042EPFG8 is available at Aetrix Electronics and suitable for CSU/DSU equipment, IADs, wireless base stations, and frame relay access devices requiring stable component supply, long-term lifecycle management, and traceable sourcing for telecom infrastructure programs.

Supply support for 82V2042EPFG8 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

IDT (Integrated Device Technology, Inc.) is a fabless semiconductor company specializing in timing, interface, and RF solutions for communications, computing, and industrial markets before its acquisition by Renesas Electronics in 2019.

The 82V2042EPFG8 belongs to IDT's legacy Line Interface Unit (LIU) product line, designed specifically for carrier-class TDM access equipment requiring multi-standard interoperability, high reliability, and integrated diagnostics in compact form factors.

FAQ

What standards does the 82V2042EPFG8 comply with?

The 82V2042EPFG8 complies with ANSI T1.102/T1.403/T1.408, ITU-T I.431/G.703/G.736/G.775/G.823, ETSI 300-166/300-233/TBR12/13, and AT&T Pub 62411. These cover physical layer requirements for T1, E1, and J1 short-haul line interfaces, including jitter transfer, LOS detection, and line coding behavior - all verified per the DSC-6774/1 datasheet.

Does the 82V2042EPFG8 support both T1 and E1 on the same device simultaneously?

Yes, the 82V2042EPFG8 supports concurrent T1 and E1 operation - each channel is independently configurable for T1, E1, or J1 mode via software registers or hardware TERM pins. This enables mixed-standard deployment, such as T1 on Channel 1 and E1 on Channel 2, without firmware changes or PCB redesign.

How is jitter handled in the 82V2042EPFG8?

The 82V2042EPFG8 includes a configurable jitter attenuator that can be placed in either the receive or transmit path - or disabled - per channel. Its jitter transfer performance meets ITU-T G.823 specifications, and jitter tolerance is validated per Table-64 in the datasheet for E1 and T1/J1 inputs, ensuring stable operation in noisy network environments.

What loopback modes does the 82V2042EPFG8 support?

The 82V2042EPFG8 supports four loopback modes: analog (line-side), digital (system-side), remote (network-initiated), and inband (via embedded codes). Each is independently controllable per channel using MAINTx registers or hardware LP[1:0] pins, enabling comprehensive fault isolation from physical layer to system interface.

Is the 82V2042EPFG8 pin-compatible with other IDT LIUs?

Yes, the 82V2042EPFG8 is pin-compatible with the 82V2082 (long/short-haul LIU) and 82V2052E (E1-only short-haul LIU), sharing identical 80-pin TQFP footprints and signal assignments for core interfaces (clocks, data, control). This enables hardware reuse across product variants while preserving layout and routing investments.

82V2042EPFG8 Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 80-LQFP

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Function:: Line Interface Unit (LIU)

Interface:: LIU

Number of Circuits:: -

Voltage - Supply:: 3.13V ~ 3.47V

Current - Supply:: -

Power (Watts):: -

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 80-TQFP (14x14)

82V2042EPFG8 FAQ

1.How can I place an order for 82V2042EPFG8 through Aetrix?

Please submit a Request for Quotation (RFQ) for 82V2042EPFG8 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 82V2042EPFG8 reliable?

The price and inventory of 82V2042EPFG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 82V2042EPFG8 is usually 5 days.

3.What payment methods are accepted for 82V2042EPFG8?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 82V2042EPFG8 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 82V2042EPFG8?

82V2042EPFG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 82V2042EPFG8 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 82V2042EPFG8?

For technical support, including 82V2042EPFG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 82V2042EPFG8 requirements.

6.How does Aetrix verify that 82V2042EPFG8 is sourced from the original manufacturer or authorized distributors?

All 82V2042EPFG8 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 82V2042EPFG8 meets industry standards.

7.What is the process for return or replacement of 82V2042EPFG8?

All 82V2042EPFG8 units undergo pre-shipment inspection (PSI). If there is an issue with 82V2042EPFG8, 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 82V2042EPFG8 part is unused and in its original packaging.

Return procedure for 82V2042EPFG8:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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