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Analog Devices Inc./Maxim Integrated DS3150QC1+
- Part No.:
- DS3150QC1+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Telecom
- Package:
- 28-LCC (J-Lead)
- Datasheet:
-
DS3150QC1+.pdf
- Description:
- IC TELECOM INTERFACE 28PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,550
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Product details
Overview
DS3150QC1+ from Maxim Integrated is a 3.3V, single-chip Line Interface Unit (LIU) for DS3 (44.736 Mbps), E3 (34.368 Mbps), and STS-1 (51.840 Mbps) physical-layer interfacing. It integrates a full receive path with clock/data recovery, B3ZS/HDB3 decoding, analog/digital loss-of-signal detection, and an adaptive equalizer supporting up to 15 dB cable loss; a transmit path with B3ZS/HDB3 encoding, waveshaping, line build-out control, and transmit driver monitor; plus a configurable jitter attenuator that can be placed in either path. It interfaces directly to 75 Ω coaxial cable up to 380 m (DS3), supports transformer- or capacitor-coupled connections, and operates across –40°C to +85°C.
For engineers reviewing the DS3150QC1+ datasheet, DS3150QC1+ pinout, DS3150QC1+ application, or DS3150QC1+ equivalent, key selection considerations include its triple-rate support (DS3/E3/STS-1), integrated jitter attenuation routing flexibility, compliance with ANSI T1.102/T1.231, ITU-T G.703/G.775/G.823/G.824, and ETSI ETS 300 686–689, as well as its 28-pin PLCC package, 3.3V operation with 5V-tolerant I/O, and built-in PRBS generator/detector for physical-layer validation.
Technical Context
The DS3150QC1+ implements independent, fully featured receive and transmit data paths with a shared, reconfigurable jitter attenuator block. Its receiver includes an adaptive analog equalizer (0–15 dB loss compensation), dual-stage LOS detection (analog ALOS and digital DLOS per ANSI T1.231 and ITU-T G.775), and selectable NRZ/bipolar output formats via ZCSE control. The transmitter supports programmable line build-out (LBO), on-chip AIS generation (ANSI T1.107 DS3 and unframed all-ones E3), and fault monitoring via DM pin (TQFP only).
It accepts master clock inputs at 44.736 MHz (DS3), 34.368 MHz (E3), or 51.840 MHz (STS-1) on MCLK or TCLK, with ICE-controlled clock inversion for glueless framer interfacing. The device performs B3ZS encoding/decoding for DS3/STS-1 and HDB3 for E3, and includes on-board 215–1 and 223–1 PRBS generation/detection compliant with ITU O.151.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supported Data Rates | 44.736 Mbps (DS3), 34.368 Mbps (E3), 51.840 Mbps (STS-1) - enables single-device deployment across North American, European, and SONET physical layers. |
| Supply Voltage | 3.3 V ±5% with 5V-tolerant I/O - simplifies mixed-voltage system integration and eliminates level-shifting for legacy 5V framer interfaces. |
| Cable Loss Compensation | 0–15 dB adaptive equalization - supports coaxial cable lengths up to 380 m (DS3), 440 m (E3), or 360 m (STS-1) without external amplification. |
| Jitter Attenuator Placement | Selectable in receive path, transmit path, or disabled - allows system-level jitter cleanup where most needed without fixed architectural constraints. |
| LOS Detection Compliance | Meets ANSI T1.231 (DS3/STS-1) and ITU-T G.775 (E3) - ensures interoperability with carrier-grade network monitoring and alarm systems. |
| Waveform Compliance | Fully satisfies ANSI T1.102, ITU-T G.703, Telcordia GR-253-CORE/GR-499-CORE templates - guarantees standards-compliant signal integrity at the cable interface. |
| PRBS Support | 215–1 and 223–1 patterns per ITU O.151 - enables standardized bit-error-rate testing without external pattern generators. |
Pinout & Package
DS3150QC1+ is housed in a 28-pin Plastic Leaded Chip Carrier (PLCC) package with J-lead geometry, rated for industrial temperature range (–40°C to +85°C). The package is lead-free and RoHS-compliant.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| RPOS / RNEG | Receiver bipolar data outputs | Deliver recovered AMI pulses in bipolar format when ZCSE = high; RPOS = 1 for positive pulses, RNEG = 1 for negative pulses - enables direct connection to bipolar-input framers. |
| RNRZ | Receiver NRZ data output | Outputs decoded NRZ data when ZCSE = low; used with RLCV to flag B3ZS/HDB3 code violations - supports standard NRZ-based framer interfaces. |
| TPOS / TNEG / TNRZ | Transmitter data inputs | Selectable input format: bipolar (TPOS/TNEG active) or NRZ (TNRZ active); ZCSE determines mode - provides flexible framer-side signaling options. |
| TX+ / TX- | Differential transmit outputs | Drive standards-compliant AMI waveforms onto 75 Ω coaxial cable via 2:1 step-down transformer - defines physical layer output interface. |
| RX+ / RX- | Differential receive inputs | Accept B3ZS/HDB3-coded AMI signals from 75 Ω coaxial cable via 1:2 step-up transformer - defines physical layer input interface. |
| MCLK / TCLK / RCLK | Clock inputs/outputs | MCLK and TCLK accept master clocks; RCLK outputs recovered clock; ICE enables polarity inversion - supports clock domain bridging and timing alignment. |
| LOS | Loss-of-Signal indicator | Active-low open-drain output asserting on DLOS (per ANSI/ITU standards) - provides direct alarm signaling to system management logic. |
| LBO | Line Build-Out control | High = preattenuation for short cables (<225 ft); Low = full drive for long cables (≥225 ft) - dynamically optimizes pulse amplitude for cable length. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated jitter attenuator with path-selectable placement | Enables system-level jitter cleanup in receive or transmit path without external components or fixed routing - critical for meeting SONET/SDH wander budgets. |
| Built-in DS3 AIS and E3 unframed all-ones generators | Eliminates need for external pattern sources during loopback, provisioning, or alarm injection - accelerates field diagnostics and service activation. |
| Adaptive equalizer with 0–15 dB range | Automatically compensates for varying coaxial cable loss without manual gain adjustment - ensures robust link acquisition across diverse installation environments. |
| Tri-state line driver with TTS control | Allows transmitter shutdown and TX+/TX- high-impedance state for protection switching or low-power standby - supports redundant line architectures and power management. |
| On-chip 215–1 / 223–1 PRBS generator and detector | Provides self-contained physical-layer BER testing without external test equipment - reduces validation time and test setup complexity. |
Applications
| SONET/SDH Multiplexers | Digital Cross-Connect Systems (DCS) |
|---|---|
Use Scenario: Aggregating and grooming OC-1/STS-1, DS3, and E3 tributaries in metro and edge transport nodes. IC Role / Device Role / Timing Role: Physical-layer line interface unit handling DS3/E3/STS-1 electrical termination, clock recovery, and jitter conditioning. Use Value: Single-chip support for multi-standard aggregation reduces BOM count and PCB area while ensuring standards-compliant waveform fidelity per GR-253-CORE. | Use Scenario: Reconfiguring DS3/E3 connectivity between central office switches and remote terminals. IC Role / Device Role / Timing Role: Bidirectional LIU providing receive clock/data recovery and transmit waveshaping with LBO adaptation for variable cable runs. Use Value: Adaptive equalization and programmable LBO enable reliable operation across diverse cross-connect distances (0–380 m) without hardware changes. |
| DSLAM Line Cards | PBX / IP-PBX Gateways |
Use Scenario: Backhauling aggregated DSL traffic over legacy TDM infrastructure using DS3/E3 trunks. IC Role / Device Role / Timing Role: DS3/E3 physical interface bridging ATM or IP backhaul traffic to copper-based access networks. Use Value: Integrated B3ZS/HDB3 encode/decode and AIS generation simplify protocol translation and alarm handling in hybrid access platforms. | Use Scenario: Interfacing enterprise PBX systems to carrier DS3/E3 trunk lines for PSTN connectivity. IC Role / Device Role / Timing Role: Electrical line interface converting framer NRZ/bipolar outputs to standards-compliant coaxial transmission. Use Value: 5V-tolerant I/O and clock inversion (ICE) enable seamless integration with legacy 5V framer ASICs without level shifters or redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar line interface unit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS3150QN+ | Same silicon, identical electrical specs, but rated for –40°C to +85°C industrial temp range and shipped in tape-and-reel (not tube); DS3150QC1+ is tube-packaged. | No functional difference; both support DS3/E3/STS-1, same pinout, same features - QC1+ is distribution-channel variant of QN+. | Select DS3150QC1+ for prototyping or low-volume builds requiring tube packaging; choose DS3150QN+ for automated SMT production. |
| MAX3150CQH+ (obsolete) | Pin-compatible predecessor with identical architecture and spec compliance; superseded by DS3150 series with enhanced jitter performance and updated qualification. | Legacy designs may use MAX3150CQH+; DS3150QC1+ offers improved jitter tolerance and extended lifecycle support. | DS3150QC1+ is the recommended drop-in replacement for MAX3150CQH+ in new designs and refreshes. |
Compared with DS3150QN+, DS3150QC1+ offers identical functionality and specifications but differs only in packaging format (tube vs. tape-and-reel), making it suitable for manual assembly or small-batch validation; versus the obsolete MAX3150CQH+, DS3150QC1+ delivers verified improvements in jitter transfer and long-term supply assurance without layout changes.
Availability
DS3150QC1+ is available at Aetrix Electronics and suitable for SONET/SDH multiplexers, digital cross-connect systems, and DSLAM line cards requiring stable component supply, long-lifecycle assurance, and industrial-temperature reliability.
Supply support for DS3150QC1+ 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 fabless semiconductor company specializing in high-performance analog, mixed-signal, and RF ICs for communications, computing, and industrial applications.
The DS3150 product line was designed as a highly integrated, multi-standard Line Interface Unit targeting carrier-grade TDM infrastructure equipment - delivering full DS3/E3/STS-1 physical layer functionality in a single 3.3V IC with minimal external components.
FAQ
What standards does the DS3150QC1+ comply with for DS3, E3, and STS-1 interfaces?
The DS3150QC1+ complies with ANSI T1.102 (electrical interfaces), T1.107 (AIS formats), T1.231 (LOS monitoring), ITU-T G.703 (physical/electrical characteristics), G.775 (LOS/AIS criteria), G.823/G.824 (jitter control), and ETSI ETS 300 686–689 (E3 leased lines). These ensure interoperability with global carrier networks. DS3150QC1+ meets all required waveform templates, jitter tolerance, and defect detection thresholds specified in these documents.
Does the DS3150QC1+ support both B3ZS and HDB3 line coding, and how is the mode selected?
Yes, DS3150QC1+ natively supports B3ZS for DS3 and STS-1, and HDB3 for E3 - mode selection is automatic based on configured data rate (44.736 MHz → B3ZS; 34.368 MHz → HDB3; 51.840 MHz → B3ZS). Encoding/decoding is enabled in NRZ mode (ZCSE = low); in bipolar mode (ZCSE = high), the B3ZS/HDB3 blocks are bypassed. DS3150QC1+ requires no software configuration to switch between standards.
What is the function of the LBO pin on the DS3150QC1+, and how should it be configured?
The LBO (Line Build-Out) pin on DS3150QC1+ controls preattenuation of the transmit waveform to match coaxial cable length: set LBO = high for cables <225 ft (pre-attenuates to simulate 225 ft loss), and LBO = low for ≥225 ft (full drive). This ensures compliance with waveform templates across the full 0–450 ft range. DS3150QC1+ uses internal circuitry to mimic cable attenuation - no external resistors or calibration required.
Can the DS3150QC1+ operate with a jittery or gapped transmit clock, and under what conditions?
Yes - when the jitter attenuator is enabled in the transmit path, DS3150QC1+ accepts a jittery or periodically gapped TCLK (gaps ≤8 UI), provided the average frequency remains within ±20 ppm of nominal line rate. In this mode, DS3150QC1+ derives the clean transmit line clock from the MCLK input, which must be transmission-quality (low jitter, ±20 ppm). Without jitter attenuator enabled, TCLK itself must be low-jitter and transmission-grade.
Is the transmit driver monitor (DM) pin available on the DS3150QC1+ in 28-pin PLCC package?
No - the DM (Driver Monitor) pin is only available on the 48-pin TQFP variants (e.g., DS3150TN+, DS3150T+). The DS3150QC1+, being a 28-pin PLCC device, does not include the DM output. Fault detection for the transmitter on DS3150QC1+ relies on system-level monitoring of TX+ and TX- waveforms or functional loopback tests. DS3150QC1+ retains all other core LIU functions including LBO, AIS generation, and PRBS.
DS3150QC1+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Line Interface Unit (LIU)
- Interface:
- LIU
- Number of Circuits:
- 1
- Voltage - Supply:
- 3.135V ~ 3.465V
- Current - Supply:
- -
- Power (Watts):
- -
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-PLCC (11.51x11.51)
DS3150QC1+ FAQ
1.How can I place an order for DS3150QC1+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS3150QC1+ 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 DS3150QC1+ reliable?
The price and inventory of DS3150QC1+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS3150QC1+ is usually 5 days.
3.What payment methods are accepted for DS3150QC1+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS3150QC1+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS3150QC1+?
DS3150QC1+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS3150QC1+ 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 DS3150QC1+?
For technical support, including DS3150QC1+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS3150QC1+ requirements.
6.How does Aetrix verify that DS3150QC1+ is sourced from the original manufacturer or authorized distributors?
All DS3150QC1+ 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 DS3150QC1+ meets industry standards.
7.What is the process for return or replacement of DS3150QC1+?
All DS3150QC1+ units undergo pre-shipment inspection (PSI). If there is an issue with DS3150QC1+, 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 DS3150QC1+ part is unused and in its original packaging.
Return procedure for DS3150QC1+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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