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

Analog Devices Inc./Maxim Integrated DS3150QNC1+

Name: DS3150QNC1+
Brand: Analog Devices Inc./Maxim Integrated
SKU: DS3150QNC1+
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DS3150QNC1+

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Telecom

Package:: -

Datasheet:: DS3150QNC1+.pdf

Description:: IC LIU DS3/E3/STS-1 28-PLCC

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Product details

Overview

DS3150QNC1+ from Maxim Integrated is a 3.3V DS3/E3/STS-1 Line Interface Unit (LIU) performing full physical-layer interfacing to 75Ω coaxial lines. It integrates receiver (clock/data recovery, B3ZS/HDB3 decoding, LOS detection), transmitter (B3ZS/HDB3 encoding, waveshaping, line driver), and configurable jitter attenuator - all in a single 28-pin PLCC package rated for -40°C to +85°C operation. Used in SONET/SDH multiplexers and DSLAMs requiring standards-compliant DS3 signal integrity.

For engineers reviewing the DS3150QNC1+ datasheet, DS3150QNC1+ pinout, DS3150QNC1+ application, or DS3150QNC1+ equivalent, key selection criteria include its dual-format (NRZ/bipolar) framer interface, adaptive equalizer supporting up to 15dB cable loss, ANSI T1.231/ITU G.775-compliant LOS detection, integrated PRBS generator/detector, and drop-in compatibility with TDK 78P7200.

Technical Context

The DS3150QNC1+ implements independent receive and transmit data paths with a reconfigurable jitter attenuator that can be placed in either path or disabled. Its receiver includes an analog AGC/equalizer handling 0–15dB coaxial loss, dual-mode (B3ZS/HDB3) decoding, and synchronized clock/data recovery using external MCLK (44.736MHz/34.368MHz/51.840MHz) or TCLK.

The transmitter supports NRZ or bipolar input formats, performs B3ZS/HDB3 encoding, drives compliant waveforms onto 75Ω cable via TX+/TX−, and features LBO control, driver monitor (DM), and on-chip AIS/PRBS pattern generation - all operating at 3.3V with 5V-tolerant I/O and ≤110mA supply current.

Key Specifications

Parameter	Value and Actual Design Meaning
Line Rates	DS3: 44.736Mbps; E3: 34.368Mbps; STS-1: 51.840Mbps - each with ±20ppm frequency accuracy required for telecom compliance.
Cable Loss Support	0–15dB via adaptive equalizer - enables reliable reception over up to 380m (DS3), 440m (E3), or 360m (STS-1) of AT&T 734A coax.
LOS Detection	Meets ANSI T1.231 (DS3/STS-1) and ITU G.775 (E3) - uses combined analog (ALOS) and digital (DLOS) detectors with 175±75 zero-count threshold.
Jitter Attenuator	Configurable in receive or transmit path - meets GR-499 Cat I/II, G.823/G.824, and GR-253-CORE jitter transfer requirements.
PRBS Support	On-chip 2¹⁵−1 and 2²³−1 generators/detectors compliant with ITU O.151 - enables physical-layer BER testing without external equipment.
Power Supply	3.3V operation with 5V-tolerant I/O; max 110mA supply current - simplifies power design and enables direct interfacing to 5V logic.
Operating Temp	-40°C to +85°C industrial range - validated for deployment in carrier-grade access concentrators and digital cross-connect systems.

Pinout & Package

DS3150QNC1+ is housed in a 28-pin Plastic Leaded Chip Carrier (PLCC) package with J-lead configuration, lead finish Sn/Pb, and body dimensions 11.51mm × 11.51mm × 3.56mm. Pinout conforms to Maxim's DS3150 pin configuration diagram (Rev 071305, Page 25).

Pin/Terminal	Circuit Role	Design Meaning
RX+, RX-	Differential line receiver inputs	Accept transformer-coupled B3ZS/HDB3 AMI signals from 75Ω coax; support capacitor coupling and DSX monitoring via RMON preamp.
TX+, TX-	Differential line driver outputs	Drive standards-compliant DS3/E3/STS-1 waveforms onto 75Ω coax; tri-state capable via TTS for low-power/switching protection.
RCLK, TCLK	Receiver/transmit clock outputs/inputs	RCLK carries recovered clock; TCLK clocks transmit data - both support polarity inversion via ICE for glueless framer interfacing.
RPOS/RNEG, TPOS/TNEG	Bipolar format I/O	Enable direct bipolar signaling without B3ZS/HDB3 decode/encode when ZCSE = high - used in legacy framer interfaces.
RNRZ, TNRZ	NRZ format I/O	Carry decoded (RNRZ) or encoded (TNRZ) data when ZCSE = low - standard mode for modern framer connectivity.
LOS	Loss-of-signal indicator	Open-drain output asserted during DLOS condition per ANSI/ITU standards - directly interfaces to system fault monitoring logic.
MCLK	Master clock input	Selects master timing source: toggling MCLK overrides TCLK; tied high/low selects TCLK/internal oscillator - critical for jitter attenuator reference.
ZCSE	Zero-code suppression enable	High = bipolar mode (decoder/encoder disabled); low = NRZ mode (B3ZS/HDB3 active) - determines framer interface protocol layer behavior.

Key Features

Feature	Design Value
Integrated jitter attenuator	Configurable placement in receive or transmit path - eliminates need for external jitter cleaners while meeting GR-499/G.823 mask requirements.
Adaptive equalization	Automatically compensates 0–15dB coaxial loss - enables single LIU design across varying cable lengths without manual gain adjustment.
Standards-compliant LOS detection	Fully satisfies ANSI T1.231 and ITU G.775 defect timing - provides carrier-grade alarm reporting without firmware intervention.
On-chip PRBS generation/detection	Supports 2¹⁵−1 and 2²³−1 patterns per ITU O.151 - enables production-line bit-error-rate validation without external test gear.
Drop-in replacement capability	PIN-compatible with TDK 78P7200 and functional replacement for TDK 78P2241/B - reduces redesign risk in legacy telecom hardware upgrades.

Applications

SONET/SDH Multiplexers	Digital Cross-Connect Systems (DCS)
Use Scenario: Aggregating multiple DS3 feeds into OC-3/OC-12 SONET payloads at central office edge nodes. IC Role / Device Role / Timing Role: Physical-layer line interface unit providing clock/data recovery, jitter attenuation, and standards-compliant waveform generation for upstream framer. Use Value: Eliminates external equalizers and jitter cleaners while maintaining GR-253-CORE compliance across variable cable plant lengths.	Use Scenario: Reconfiguring DS3/E3 traffic paths in carrier-class digital cross-connect switches with hot-swappable line cards. IC Role / Device Role / Timing Role: Dual-format (NRZ/bipolar) LIU enabling interoperability with legacy and modern framer ASICs on same backplane. Use Value: ZCSE-controlled interface mode selection avoids board-level redesign when upgrading framer generations.
DSLAM Line Cards	ATM/Frame Relay Edge Routers
Use Scenario: Providing DS3 backhaul connectivity from DSL aggregation shelves to metro core routers. IC Role / Device Role / Timing Role: Line driver and receiver with built-in AIS/PRBS generation - supports remote diagnostics and loopback testing over live links. Use Value: On-chip DS3 AIS and unframed all-ones generation enables automated link provisioning and fault isolation without external pattern sources.	Use Scenario: Interfacing ATM segmentation/reassembly (SAR) chips to DS3 WAN interfaces in enterprise edge routers. IC Role / Device Role / Timing Role: Clock/data recovery unit synchronizing SAR clock domains to incoming DS3 line timing with sub-UI jitter performance. Use Value: Jitter attenuator in receive path ensures clean, low-jitter RCLK delivery to SAR - preventing cell misalignment and CRC errors.

SONET/SDH Multiplexers

Digital Cross-Connect Systems (DCS)

Use Scenario: Aggregating multiple DS3 feeds into OC-3/OC-12 SONET payloads at central office edge nodes.

IC Role / Device Role / Timing Role: Physical-layer line interface unit providing clock/data recovery, jitter attenuation, and standards-compliant waveform generation for upstream framer.

Use Value: Eliminates external equalizers and jitter cleaners while maintaining GR-253-CORE compliance across variable cable plant lengths.

Use Scenario: Reconfiguring DS3/E3 traffic paths in carrier-class digital cross-connect switches with hot-swappable line cards.

IC Role / Device Role / Timing Role: Dual-format (NRZ/bipolar) LIU enabling interoperability with legacy and modern framer ASICs on same backplane.

Use Value: ZCSE-controlled interface mode selection avoids board-level redesign when upgrading framer generations.

DSLAM Line Cards

ATM/Frame Relay Edge Routers

Use Scenario: Providing DS3 backhaul connectivity from DSL aggregation shelves to metro core routers.

IC Role / Device Role / Timing Role: Line driver and receiver with built-in AIS/PRBS generation - supports remote diagnostics and loopback testing over live links.

Use Value: On-chip DS3 AIS and unframed all-ones generation enables automated link provisioning and fault isolation without external pattern sources.

Use Scenario: Interfacing ATM segmentation/reassembly (SAR) chips to DS3 WAN interfaces in enterprise edge routers.

IC Role / Device Role / Timing Role: Clock/data recovery unit synchronizing SAR clock domains to incoming DS3 line timing with sub-UI jitter performance.

Use Value: Jitter attenuator in receive path ensures clean, low-jitter RCLK delivery to SAR - preventing cell misalignment and CRC errors.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
DS3150TN+	48-pin TQFP package; includes DM (driver monitor) pin not present in 28-pin PLCC; identical electrical specs and temperature range (-40°C to +85°C).	Required where PCB layout accommodates larger footprint and DM-based transmitter fault reporting is needed for field-replaceable modules.	Select DS3150TN+ when driver monitor output (DM) is required for automated transmitter health checking in modular chassis systems.
TDK 78P7200	Pin-compatible 28-pin PLCC LIU; lacks integrated jitter attenuator and on-chip PRBS generator/detector; supports only DS3/E3 (no STS-1).	Suitable for cost-sensitive DS3/E3-only applications where jitter cleaning is handled externally and PRBS testing is performed off-board.	Choose TDK 78P7200 only if STS-1 support, jitter attenuation, and embedded diagnostics are unnecessary - otherwise DS3150QNC1+ delivers higher integration.

Compared with DS3150TN+, DS3150QNC1+ saves board space and cost in compact line cards but omits DM for transmitter fault detection; compared with TDK 78P7200, it adds STS-1 capability, jitter attenuation, and PRBS - enabling single-chip compliance with SONET, PDH, and ATM transport standards.

Availability

DS3150QNC1+ is available at Aetrix Electronics and suitable for SONET multiplexers, DSLAM line cards, and digital cross-connect systems requiring stable component supply across extended product lifecycles and carrier-grade environmental conditions.

Supply support for DS3150QNC1+ 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

Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and RF ICs for communications, computing, and industrial markets.

The DS3150 product line delivers fully integrated, standards-compliant line interface units targeting telecom infrastructure equipment - designed to replace discrete receiver/transmitter/jitter cleaner combinations with single-chip solutions meeting GR-253, GR-499, and ITU-T requirements.

FAQ

What telecommunication standards does the DS3150QNC1+ comply with?

The DS3150QNC1+ complies with ANSI T1.102, T1.107, T1.231, T1.404; ITU-T G.703, G.751, G.775, G.823, G.824; ETSI ETS 300 686/687/EN 300 689; Telcordia GR-253-CORE and GR-499-CORE. Compliance is verified per Table 1-A in the official datasheet (Rev 071305), covering DS3, E3, and STS-1 physical layer requirements including waveform templates, jitter tolerance, and LOS detection.

Does the DS3150QNC1+ support both B3ZS and HDB3 line coding?

Yes, the DS3150QNC1+ supports both B3ZS (for DS3 and STS-1) and HDB3 (for E3) encoding and decoding. The coding scheme is automatically selected based on configured line rate: B3ZS is applied at 44.736Mbps (DS3) and 51.840Mbps (STS-1); HDB3 is applied at 34.368Mbps (E3). The B3ZS/HDB3 decoder flags violations on RLCV, and the encoder generates compliant waveforms on TX+/TX−.

How is the jitter attenuator configured in the DS3150QNC1+?

The jitter attenuator in the DS3150QNC1+ is configured via internal register settings controlled by the host processor through the device's parallel interface. It can be mapped exclusively into the receive path, exclusively into the transmit path, or disabled - but cannot operate in both paths simultaneously. Configuration requires writing to specific control bits per the "Jitter Attenuator" section (Page 16) of the DS3150 datasheet.

What is the function of the ZCSE pin on the DS3150QNC1+?

The ZCSE (Zero-Code Suppression Enable) pin on the DS3150QNC1+ selects the framer interface format: when pulled high, it enables bipolar mode (RPOS/RNEG and TPOS/TNEG active; B3ZS/HDB3 decoder/encoder disabled); when pulled low, it enables NRZ mode (RNRZ and TNRZ active; B3ZS/HDB3 processing enabled). This allows glueless interfacing to both legacy bipolar and modern NRZ framer ASICs.

Can the DS3150QNC1+ generate alarm indication signals (AIS)?

Yes, the DS3150QNC1+ includes a complete DS3 AIS generator compliant with ANSI T1.107 and an unframed all-ones generator for E3 AIS. These patterns are selected via TDS0/TDS1 control inputs and output on TX+/TX−. The DS3 AIS structure follows the M1–M6 subframe format defined in Figure 1-5 of the datasheet, enabling automatic link failure signaling to upstream network elements.

DS3150QNC1+ Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Obsolete

Function:: -

Interface:: -

Number of Circuits:: -

Voltage - Supply:: -

Current - Supply:: -

Power (Watts):: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

DS3150QNC1+ FAQ

1.How can I place an order for DS3150QNC1+ through Aetrix?

Please submit a Request for Quotation (RFQ) for DS3150QNC1+ 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 DS3150QNC1+ reliable?

The price and inventory of DS3150QNC1+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS3150QNC1+ is usually 5 days.

3.What payment methods are accepted for DS3150QNC1+?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS3150QNC1+ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DS3150QNC1+?

DS3150QNC1+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DS3150QNC1+ 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 DS3150QNC1+?

For technical support, including DS3150QNC1+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS3150QNC1+ requirements.

6.How does Aetrix verify that DS3150QNC1+ is sourced from the original manufacturer or authorized distributors?

All DS3150QNC1+ 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 DS3150QNC1+ meets industry standards.

7.What is the process for return or replacement of DS3150QNC1+?

All DS3150QNC1+ units undergo pre-shipment inspection (PSI). If there is an issue with DS3150QNC1+, 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 DS3150QNC1+ part is unused and in its original packaging.

Return procedure for DS3150QNC1+:

1.Submit a request within 90 days.

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

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