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Analog Devices Inc./Maxim Integrated DS3150TN+
- Part No.:
- DS3150TN+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Telecom
- Package:
- 48-TQFP
- Datasheet:
-
DS3150TN+.pdf
- Description:
- IC TELECOM INTERFACE 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,182
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Product details
Overview
DS3150TN+ from Maxim Integrated is a 3.3V, industrial-temperature (-40°C to +85°C) DS3/E3/STS-1 Line Interface Unit (LIU) in 48-pin TQFP packaging. It integrates full physical-layer functions: clock/data recovery (CDR), B3ZS/HDB3 encoding/decoding, jitter attenuation (configurable in receive or transmit path), AGC/equalizer for 0–15dB cable loss compensation, and standards-compliant 75Ω coaxial line driving up to 380m (DS3). It serves as the core interface IC in SONET/SDH multiplexers and DSLAMs.
For engineers reviewing the DS3150TN+ datasheet, DS3150TN+ pinout, DS3150TN+ application, or DS3150TN+ equivalent, key selection considerations include its dual-standard support (ANSI T1.x and ITU-T G.7xx), integrated PRBS generator/detector (215−1 and 223−1), LOS detection compliant with ANSI T1.231 and ITU-T G.775, tri-state line driver for protection switching, and 5V-tolerant I/O for glueless framer interfacing.
Technical Context
The DS3150TN+ implements independent receive and transmit data paths with a configurable jitter attenuator that can be placed in either path or disabled. Its receiver includes adaptive analog equalization, analog and digital loss-of-signal (LOS) detection, and supports both NRZ and bipolar output formats via ZCSE control.
The transmitter performs waveshaping per ANSI T1.102, ITU-T G.703, and Telcordia GR-253-CORE templates; features programmable line build-out (LBO); includes built-in AIS generators (DS3 and E3); and provides transmit driver monitoring (DM pin, TQFP-only). Master clock selection (MCLK/TCLK/internal) enables flexible timing architecture across DS3 (44.736MHz), E3 (34.368MHz), and STS-1 (51.840MHz) rates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.3V operation with 5V-tolerant I/O - enables direct interfacing to legacy 5V logic without level shifters. |
| Data Rates | 44.736Mbps (DS3), 34.368Mbps (E3), 51.840Mbps (STS-1) - single device supports all three major TDM hierarchies. |
| Cable Loss Compensation | 0–15dB adaptive equalization - supports coaxial cable lengths up to 380m (DS3), 440m (E3), or 360m (STS-1). |
| Jitter Attenuation | Configurable in receive or transmit path - meets jitter transfer requirements per ITU-T G.823/G.824 and Telcordia GR-499. |
| LOS Detection | Analog + digital dual-stage detection compliant with ANSI T1.231 (STS-1), ITU-T G.775 (E3), and ANSI T1.231 (DS3) - ensures standards-aligned defect reporting. |
| 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. |
| Line Driver Monitor | Dedicated DM output (TQFP package only) - asserts on load impedance <25Ω, enabling fault detection for short-circuit or failed termination. |
Pinout & Package
DS3150TN+ is housed in a 48-pin Thin Quad Flat Package (TQFP) with 0.5mm pitch, lead-free and RoHS-compliant. The package supports industrial temperature operation (−40°C to +85°C) and provides thermal pad for enhanced power dissipation.
| 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 monitor (20dB loss) via RMON preamp. |
| TX+, TX− | Differential line driver outputs | Drive standards-compliant waveforms onto 75Ω coax; tri-state capable (via TTS) for protection switching and low-power mode. |
| RCLK, TCLK | Receive/transmit clock outputs/inputs | RCLK is recovered clock output; TCLK clocks input data - both support polarity inversion (ICE pin) for glueless framer interfacing. |
| RPOS, RNEG, RNRZ | Recovered data outputs | RPOS/RNEG = bipolar format; RNRZ = decoded NRZ - selected by ZCSE pin; RLCV flags B3ZS/HDB3 violations in NRZ mode. |
| MCLK | Master clock input | Primary timing reference (44.736/34.368/51.840MHz); overrides TCLK when active - required for jitter attenuator operation in transmit path. |
| LOS | Loss-of-signal indicator | Open-drain output asserted during DLOS (175±75 consecutive zeros); deasserted after valid signal restoration per standard-defined clearing criteria. |
| DM | Transmit driver monitor | Active-low fault indicator (TQFP only); asserts when TX+/- sees load <25Ω - enables real-time transmitter health monitoring. |
| LBO | Line build-out control | High = preattenuation for short cables (<225ft); low = full drive for long cables (≥225ft) - matches coaxial insertion loss automatically. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated jitter attenuator | Configurable placement (Rx or Tx path) meets ITU-T G.823/G.824 and Telcordia GR-499 jitter transfer specs - eliminates need for external jitter cleaners. |
| B3ZS/HDB3 encode/decode | Hardware-accelerated coding per ANSI T1.107 and ITU-T G.703 - reduces framer processing load and ensures bit-level compliance. |
| Adaptive equalization | 0–15dB automatic gain adjustment compensates for varying coaxial cable lengths - enables single-BOM deployment across diverse field installations. |
| Standards-compliant AIS generation | On-chip DS3 AIS (ANSI T1.107) and E3 unframed all-ones - simplifies alarm signaling without external logic or memory. |
| Tri-state line driver | Controlled via TTS pin - supports hot-swappable protection switching and low-power standby in carrier-grade systems. |
| 5V-tolerant I/O | All digital I/O pins withstand 5V - allows direct connection to 5V framer ASICs/FPGAs without level-shifting components. |
Applications
| SONET/SDH Multiplexers | Digital Cross-Connect Systems (DCS) |
|---|---|
Use Scenario: Aggregating multiple DS3/E3 tributaries into OC-3/OC-12 SONET payloads at central office aggregation points. IC Role / Device Role / Timing Role: Physical-layer line interface unit (LIU) performing CDR, jitter cleanup, and waveform shaping for incoming/outgoing DS3/E3/STS-1 signals. Use Value: Enables single-chip, standards-compliant interfacing to legacy TDM infrastructure while meeting GR-253-CORE jitter and template requirements. |
Use Scenario: Reconfiguring DS3/E3 signal paths in carrier-class digital cross-connects with sub-50ms protection switching. IC Role / Device Role / Timing Role: Bidirectional LIU providing synchronized Rx/Tx paths with tri-state driver (TTS) for seamless path reassignment. Use Value: Tri-state capability and fast LOS detection (<250µs clear time) support hitless switching and service continuity per Telcordia GR-499. |
| DSL Access Multiplexers (DSLAMs) | CSU/DSUs and PBX Gateways |
Use Scenario: Backhauling DSL subscriber traffic over DS3/E3 leased lines in metro access networks. IC Role / Device Role / Timing Role: Line-side interface handling B3ZS/HDB3 decoding, equalization for variable cable loss, and PRBS-based loopback diagnostics. Use Value: Adaptive equalizer (0–15dB) accommodates diverse copper plant conditions; on-chip PRBS generator enables automated field validation. |
Use Scenario: Providing TDM connectivity between enterprise PBXs and carrier DS3/E3 networks via CSU/DSU units. IC Role / Device Role / Timing Role: Standards-compliant LIU supporting DSX monitoring (RMON), AIS generation, and local/remote loopbacks. Use Value: Built-in DS3/E3 AIS and 20dB flat-loss DSX preamp eliminate external components, reducing BOM cost and board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar line interface unit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS3150T+ | Identical functionality but rated for 0°C to +70°C commercial temperature range; same 48-pin TQFP package and pinout. | Suitable for controlled-environment equipment (e.g., enterprise routers, lab test gear) where industrial temp is not required. | Select DS3150T+ only if ambient operating temperature remains within 0–70°C; DS3150TN+ is mandatory for outdoor cabinets or uncooled central office deployments. |
| MAX3150ENP+ | Successor device with identical pinout, enhanced jitter performance, lower power (85mA vs. 110mA), and extended ESD rating (±15kV HBM). | Drop-in replacement for new designs targeting improved reliability and reduced thermal load; requires no PCB change. | For new designs, MAX3150ENP+ offers lifecycle assurance and superior specs; DS3150TN+ remains optimal for legacy design refreshes or cost-sensitive volume production. |
Compared with DS3150T+, DS3150TN+ enables deployment in harsh thermal environments without derating; compared with MAX3150ENP+, it provides proven field reliability and broader distributor availability for maintenance builds, though with higher power draw and older ESD spec.
Availability
DS3150TN+ is available at Aetrix Electronics and suitable for SONET/SDH multiplexers, DSLAMs, and digital cross-connect systems requiring stable component supply across extended industrial temperature ranges and multi-year production cycles.
Supply support for DS3150TN+ 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 high-performance analog, mixed-signal, and RF solutions for communications, computing, and industrial markets.
The DS3150TN+ belongs to Maxim's telecommunications line interface IC product line, designed specifically to replace discrete analog front-ends in carrier-grade TDM infrastructure equipment while ensuring full compliance with ANSI, ITU-T, and Telcordia physical-layer standards.
FAQ
What standards does the DS3150TN+ comply with for DS3, E3, and STS-1 interfaces?
The DS3150TN+ complies with ANSI T1.102, T1.107, T1.231, and T1.404 for DS3; ITU-T G.703, G.751, and G.775 for E3; and ITU-T G.703, G.823, and Telcordia GR-253-CORE for STS-1. It also meets ETSI ETS 300 686/687/689 and O.151 for PRBS testing. These are explicitly listed in Table 1-A of the official datasheet.
Does the DS3150TN+ support both B3ZS and HDB3 coding schemes, and how is mode selection handled?
Yes, the DS3150TN+ supports both B3ZS (for DS3/STS-1) and HDB3 (for E3) encoding and decoding. Mode selection is automatic and determined by the configured data rate: B3ZS is used at 44.736MHz (DS3) and 51.840MHz (STS-1); HDB3 is used at 34.368MHz (E3). No software or pin configuration is needed - the internal state machine detects and applies the correct coding scheme.
What is the function of the DM pin on the DS3150TN+, and is it available on all package variants?
The DM (Driver Monitor) pin on the DS3150TN+ is an open-drain output that asserts low when the transmit driver detects a load impedance below ~25Ω - indicating a short circuit or faulty termination. This pin is available only on the 48-pin TQFP package (DS3150TN+/DS3150T+) and is not present on the 28-pin PLCC variants (DS3150QN/DS3150Q).
How does the jitter attenuator in the DS3150TN+ operate, and can it be used simultaneously in both receive and transmit paths?
The jitter attenuator in the DS3150TN+ is a single shared block that can be mapped exclusively into either the receive path or the transmit path - not both simultaneously. Configuration is done via register settings; when enabled in the receive path, it cleans incoming jitter before CDR; when enabled in the transmit path, it generates a clean line clock from MCLK for jittery TCLK inputs. It cannot be active in both paths at once.
What is the maximum coaxial cable length supported by the DS3150TN+ for DS3 operation, and what enables this reach?
The DS3150TN+ supports up to 380 meters of AT&T 734A-equivalent coaxial cable for DS3 operation. This reach is enabled by its adaptive analog equalizer, which automatically compensates for 0–15dB of frequency-dependent cable loss - translating directly to the specified distance under standard cable attenuation profiles.
DS3150TN+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 48-TQFP
- Packaging:
- Tray
- 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:
- 48-TQFP (7x7)
DS3150TN+ FAQ
1.How can I place an order for DS3150TN+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS3150TN+ 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 DS3150TN+ reliable?
The price and inventory of DS3150TN+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS3150TN+ is usually 5 days.
3.What payment methods are accepted for DS3150TN+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS3150TN+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS3150TN+?
DS3150TN+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS3150TN+ 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 DS3150TN+?
For technical support, including DS3150TN+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS3150TN+ requirements.
6.How does Aetrix verify that DS3150TN+ is sourced from the original manufacturer or authorized distributors?
All DS3150TN+ 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 DS3150TN+ meets industry standards.
7.What is the process for return or replacement of DS3150TN+?
All DS3150TN+ units undergo pre-shipment inspection (PSI). If there is an issue with DS3150TN+, 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 DS3150TN+ part is unused and in its original packaging.
Return procedure for DS3150TN+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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