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Analog Devices Inc./Maxim Integrated DS3150QN+
- Part No.:
- DS3150QN+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Telecom
- Package:
- 28-LCC (J-Lead)
- Datasheet:
-
DS3150QN+.pdf
- Description:
- IC TELECOM INTERFACE 28PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,311
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Product details
Overview
DS3150QN+ from Maxim Integrated is a 3.3V, single-chip DS3/E3/STS-1 Line Interface Unit (LIU) performing physical-layer interfacing with integrated receiver, transmitter, and configurable jitter attenuator. It supports B3ZS/HDB3 decoding/encoding, clock/data recovery at 44.736Mbps (DS3), 34.368Mbps (E3), or 51.840Mbps (STS-1), AGC/equalization for up to 15dB cable loss, and direct 75Ω coaxial interface up to 380m (DS3). It is deployed in SONET/SDH multiplexers and digital cross-connect systems.
For engineers reviewing the DS3150QN+ datasheet, DS3150QN+ pinout, DS3150QN+ application, or DS3150QN+ equivalent, key selection considerations include its 28-pin PLCC industrial-grade package (-40°C to +85°C), dual-format (NRZ/bipolar) framer interface, ANSI T1.231 and ITU G.775-compliant LOS detection, and drop-in compatibility with TDK 78P7200.
Technical Context
The DS3150QN+ implements independent receive and transmit data paths with a programmable jitter attenuator that can be placed exclusively in either path or disabled. Its receiver includes adaptive analog equalizer (0–15dB loss compensation), dual-mode LOS detection (analog ALOS + digital DLOS), and B3ZS/HDB3 decoder with RLCV violation flagging.
The transmitter supports NRZ/bipolar input selection via ZCSE, on-chip AIS (ANSI T1.107) and unframed all-ones generation, LBO control for 0–450 ft cable lengths, and built-in driver monitor (DM pin available only in TQFP packages). Clock inversion via ICE enables glueless framer interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.3V operation with 5V-tolerant I/O - enables direct interfacing with legacy 5V logic without level shifters. |
| Data Rates | 44.736Mbps (DS3), 34.368Mbps (E3), 51.840Mbps (STS-1) - covers full PDH/SONET/SDH physical layer rates. |
| Cable Loss Compensation | 0–15dB adaptive equalization - supports coaxial runs up to 380m (DS3), 440m (E3), or 360m (STS-1). |
| LOS Detection | Complies with ANSI T1.231 (DS3/STS-1) and ITU G.775 (E3) - uses dual analog/digital detection with 175±75 zero-count threshold. |
| Jitter Attenuation | Configurable placement in Rx or Tx path - meets GR-499 Cat I/II, G.823/G.824, and GR-253-CORE jitter transfer requirements. |
| Line Interface | Direct 75Ω coaxial drive/receive - eliminates need for external line drivers or receivers in standard implementations. |
| PRBS Support | On-chip 215−1 and 223−1 generators/detectors per ITU O.151 - enables in-system physical-layer BER testing without external pattern sources. |
Pinout & Package
DS3150QN+ is housed in a 28-pin Plastic Leaded Chip Carrier (PLCC) package with gull-wing leads, rated for industrial temperature range (−40°C to +85°C). Pin assignments are defined per Maxim's DS3150 datasheet revision 071305, Section 2 (Pin Descriptions) and Section 4 (Pin Configurations).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RX+, RX− | Differential receive inputs | Accept transformer-coupled B3ZS/HDB3 AMI signals from 75Ω coax; support capacitor coupling and DSX monitoring via RMON preamp. |
| TX+, TX− | Differential transmit outputs | Drive standards-compliant waveforms onto 75Ω coax; tri-state controllable via TTS for low-power mode or protection switching. |
| RCLK | Recovered clock output | Provides NRZ- or bipolar-synchronized clock; polarity invertible via ICE for glueless framer timing alignment. |
| RPOS / RNEG | Bipolar-format recovered data outputs | Active-high positive/negative pulse indicators - used when ZCSE = high; bypasses B3ZS/HDB3 decoding. |
| RNRZ | NRZ-format decoded data output | Composite NRZ stream with B3ZS/HDB3 violations flagged on RLCV - enabled when ZCSE = low. |
| TCLK | Transmit clock input | Clocks TPOS/TNRZ/TNEG data; jitter tolerance relaxed when jitter attenuator is active in Tx path. |
| MCLK | Master clock input | Source for jitter attenuator and CDR when selected over TCLK; must be transmission-quality (≤20ppm, low jitter). |
| LOS | Loss-of-signal indicator | Open-drain active-low output asserted during DLOS condition per ANSI/ITU standards; deasserted after 175±75 zero-free intervals. |
| ZCSE | Zero-code select enable | High = bipolar interface (decoder disabled); Low = NRZ interface (B3ZS/HDB3 decoding enabled). |
| ICE | Invert clock enable | High = inverts RCLK and TCLK polarity - eliminates external inverters for framer clock alignment. |
| LBO | Line build-out control | Low = no preattenuation (≥225 ft cable); High = preattenuates to emulate 225 ft loss - ensures waveform template compliance across lengths. |
| TTS | Transmit tri-state | Low = disables transmitter and tri-states TX+/TX− - enables power-down and protection switching without external circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated jitter attenuator routing | Configurable placement in receive or transmit path - allows system-level jitter cleanup without adding discrete PLLs or buffers. |
| B3ZS/HDB3 encode/decode engine | Hardware-accelerated encoding and violation detection (RLCV) - offloads framer and enables real-time code integrity monitoring. |
| Adaptive AGC/equalizer | Automatic 0–15dB gain adjustment - eliminates manual calibration and supports dynamic cable length changes in field-deployed equipment. |
| DS3/E3/STS-1 AIS generators | On-chip ANSI T1.107 DS3 AIS and E3 unframed all-ones - enables rapid fault signaling and loopback validation without external logic. |
| Tri-state line driver | Hardware-controlled TX+/TX− disable via TTS - simplifies redundant line switching and reduces standby power in protection architectures. |
| PRBS generator/detector | 215−1 and 223−1 patterns compliant with ITU O.151 - provides production-test-ready BER verification without external test gear. |
Applications
| SONET/SDH Multiplexers | Digital Cross-Connect Systems (DCS) |
|---|---|
|
Use Scenario: Aggregating multiple DS3/E3 tributaries into STS-1/STS-3c payloads within carrier-class transport nodes. IC Role / Device Role / Timing Role: Physical-layer line interface unit handling clock/data recovery, jitter attenuation, and waveform shaping for synchronous optical network ingress/egress. Use Value: Eliminates discrete transceiver + jitter cleaner + equalizer combinations, reducing BOM count and board area while ensuring GR-253-CORE compliance. |
Use Scenario: Reconfiguring DS3/E3 signal paths in central office switching fabrics with sub-50ms protection switching. IC Role / Device Role / Timing Role: Bidirectional LIU providing synchronized Rx/Tx paths with tri-state driver (TTS) and LOS-driven failover signaling. Use Value: Enables hardware-fast protection switching via TTS control and deterministic LOS assertion/clearing per ANSI T1.231. |
| DSLAM Line Cards | ATM/Frame Relay Edge Routers |
|
Use Scenario: Backhauling aggregated xDSL traffic over legacy DS3 infrastructure in broadband access networks. IC Role / Device Role / Timing Role: DS3 physical interface bridging ATM cell streams to TDM backbone; supports RMON monitoring of DSX test points. Use Value: Built-in 20dB flat-gain preamp (RMON) allows direct connection to DSX monitoring ports without external amplification. |
Use Scenario: Providing DS3/E3 WAN interfaces on enterprise edge routers supporting legacy leased-line connectivity. IC Role / Device Role / Timing Role: Standards-compliant line interface enabling interoperability with telco-provided DS3/E3 circuits and CSU/DSU handoff points. Use Value: Drop-in replacement for TDK 78P7200 with identical pinout and functional coverage - accelerates migration from legacy LIUs. |
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, same electrical specs but adds DM (driver monitor) pin and supports wider thermal margin in high-density layouts. | Preferred for new designs requiring driver fault detection or higher pin-count routing flexibility; not pin-compatible with DS3150QN+. | Select DS3150TN+ when DM functionality or TQFP thermal/mechanical advantages are required; otherwise DS3150QN+ remains optimal for space-constrained PLCC layouts. |
| TDK 78P7200 | Legacy 28-pin PLCC LIU; lacks integrated jitter attenuator, PRBS generator, and RMON preamp; requires external components for full DS3/E3/STS-1 compliance. | Used in older deployments where DS3150QN+ serves as drop-in upgrade; no B3ZS/HDB3 violation flagging or automatic equalization. | DS3150QN+ offers full feature parity and pin compatibility with TDK 78P7200 - ideal for lifecycle replacement without PCB redesign. |
Compared with DS3150TN+, DS3150QN+ trades DM pin availability and TQFP thermal performance for smaller footprint and lower assembly cost in PLCC-based systems; compared with TDK 78P7200, it delivers integrated jitter cleanup, self-test capability, and reduced external component count - directly lowering total system BOM and validation effort.
Availability
DS3150QN+ is available at Aetrix Electronics and suitable for SONET/SDH multiplexers, digital cross-connect systems, and DSLAM line cards requiring stable component supply, long-term industrial temperature support, and telecom-standard compliance.
Supply support for DS3150QN+ 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 semiconductor company specializing in precision analog, mixed-signal, and high-reliability ICs for communications, industrial, and computing markets.
The DS3150QN+ belongs to Maxim's telecommunications line interface unit product line, designed specifically to consolidate DS3/E3/STS-1 physical layer functions-including clock recovery, jitter attenuation, and waveform shaping-into a single 3.3V IC for carrier-grade infrastructure equipment.
FAQ
What is the operating temperature range for DS3150QN+?
The DS3150QN+ is rated for industrial temperature operation from −40°C to +85°C. This range is specified in the Ordering Information table of the Maxim DS3150 datasheet (Rev 071305) and validated across all electrical parameters including jitter transfer, LOS detection, and equalizer performance. The DS3150QN+ variant uses the 28-pin PLCC package optimized for this extended thermal envelope.
Does DS3150QN+ support both DS3 and E3 standards simultaneously?
No - the DS3150QN+ operates in one fixed line rate mode per configuration: 44.736Mbps (DS3), 34.368Mbps (E3), or 51.840Mbps (STS-1). Rate selection is determined by the master clock applied to MCLK (or TCLK), and internal logic auto-configures B3ZS vs. HDB3 decoding, LOS thresholds, and waveform templates accordingly. DS3150QN+ does not perform concurrent multi-rate operation.
Is the jitter attenuator in DS3150QN+ configurable for receive or transmit path only?
Yes - the jitter attenuator in DS3150QN+ is digitally configurable to reside exclusively in the receive path, exclusively in the transmit path, or be disabled. This routing is controlled via internal register settings (not pin-strapped), and the configuration determines which data path benefits from jitter reduction while leaving the other path unaffected. Performance meets GR-499 and G.823/G.824 requirements in either configuration.
What external components are required for basic DS3150QN+ operation?
Minimal external components are required: two 1:2 step-up transformers (e.g., Pulse PE-65968) for RX+/RX− and TX+/TX−, decoupling capacitors (0.01µF, 0.1µF, 1µF per VDD), and pull-up/down resistors for control pins (ZCSE, LBO, TTS). No external equalizers, clock cleaners, or line drivers are needed - the DS3150QN+ integrates all core physical-layer functions per the Functional Diagram and Figure 1-2 in the datasheet.
How does DS3150QN+ handle loss-of-signal detection for E3 applications?
For E3, DS3150QN+ uses a dual-stage LOS mechanism per ITU G.775: first, the analog LOS (ALOS) detector mutes data when input falls ≤24dB below nominal; second, the digital LOS (DLOS) detector asserts LOS after counting 175±75 consecutive zeros in the recovered stream. Clearing requires ALOS recovery (>18dB below nominal) plus 175±75 zero-free intervals - a combined behavior explicitly validated in Section 1.1 of the DS3150 datasheet.
DS3150QN+ 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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-PLCC (11.51x11.51)
DS3150QN+ FAQ
1.How can I place an order for DS3150QN+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS3150QN+ 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 DS3150QN+ reliable?
The price and inventory of DS3150QN+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS3150QN+ is usually 5 days.
3.What payment methods are accepted for DS3150QN+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS3150QN+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS3150QN+?
DS3150QN+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS3150QN+ 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 DS3150QN+?
For technical support, including DS3150QN+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS3150QN+ requirements.
6.How does Aetrix verify that DS3150QN+ is sourced from the original manufacturer or authorized distributors?
All DS3150QN+ 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 DS3150QN+ meets industry standards.
7.What is the process for return or replacement of DS3150QN+?
All DS3150QN+ units undergo pre-shipment inspection (PSI). If there is an issue with DS3150QN+, 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 DS3150QN+ part is unused and in its original packaging.
Return procedure for DS3150QN+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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