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Analog Devices Inc./Maxim Integrated DS3112ND1E
- Part No.:
- DS3112ND1E
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Telecom
- Package:
- 256-BGA
- Datasheet:
-
DS3112ND1E.pdf
- Description:
- TEMPE T3/E3 MULTIPLEXER 3.3V T3/
- Quantity:
- Payment:
- Shipping:
Inventory:165
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Product details
Overview
DS3112ND1E from Maxim Integrated is a TEMPE (T3/E3 MultiPlexEr) IC functioning as a T3/E3 framer, M13/E13/G.747 multiplexer, or standalone T3/E3 framer with integrated HDLC and FEAC controllers, BERT, and dual T1/E1 drop-and-insert capability. It supports 28×T1→T3, 16×E1→E3, and 21×E1→T3 multiplexing, operates on 3.3V supply with 5V-tolerant I/O, and targets telecom access equipment requiring precise DS3/E3 layer-1 transport.
For engineers reviewing the DS3112ND1E datasheet, DS3112ND1E pinout, DS3112ND1E application, or DS3112ND1E equivalent, this page delivers verified functional modes (M13/E13/G.747), alarm generation/detection (T3/E3/T2/E2), loopback types (payload/line/diagnostic), BERT performance monitoring, and JTAG-compliant boundary-scan support - all critical for carrier-grade timing, framing, and diagnostics validation.
Technical Context
The DS3112ND1E implements a two-stage demultiplexing/multiplexing architecture: T3/E3 framer handles line-level framing and overhead insertion/removal, while the M13/E13/G.747 multiplexer performs hierarchical channel aggregation. It natively supports C-bit parity mode, B3ZS/HDB3 encoding/decoding, and generates/detects T3/E3 and T2/E2 alarms per ANSI T1.107, ITU G.703, and GR-499-CORE.
Its integrated HDLC controller manages LAPD messaging autonomously using 256-byte buffers, and the FEAC controller enables frame-aligned error counting. Diagnostics include Tx-to-Rx, Rx-to-Tx, and payload loopbacks across both high-speed (T3/E3) and low-speed (T1/E1) ports - all configurable via memory-mapped registers accessible through a 16-bit nonmultiplexed or 8-bit optional control port.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | T3/E3 framer + M13/E13/G.747 multiplexer + HDLC/FEAC/BERT |
| Supply Voltage | 3.3V core with 5V-tolerant I/O - simplifies interface to legacy 5V logic without level shifters |
| Multiplexing Modes | 28×T1→T3 (M13), 16×E1→E3 (E13), 21×E1→T3 (G.747) - enables flexible regional carrier deployment |
| Alarm Support | Generates/detects T3/E3 and T2/E2 alarms per ANSI/ITU/Bellcore standards - ensures interoperability in multi-vendor networks |
| Encoding | B3ZS (T3) and HDB3 (E3) encode/decode - meets physical layer compliance for metallic DS3/E3 interfaces |
| Loopback Types | Tx-to-Rx, Rx-to-Tx, and payload loopback on T3/E3 and T1/E1 ports - enables full-layer diagnostic isolation |
| Control Interface | 16-bit nonmultiplexed or 8-bit multiplexed CPU bus - supports Intel/Motorola timing protocols per datasheet AC specs |
Pinout & Package
DS3112ND1E is housed in a 256-ball PBGA package with 1.27mm pitch (package code: 56-G6002-001), rated for -40°C to +85°C operation. Pin functions are defined across six signal groups: CPU bus (address/data/control), T3/E3 receive/transmit ports (HRCLK/HRPOS/HRNEG, HTCLK/HTPOS/HTNEG), T1/E1 low-speed ports (LTCLK/LTDAT/LRCLK/LRDAT), JTAG (TCK/TMS/TDI/TDO/TRST), and power/reset (VDD/VSS/RESET).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| HRPOS / HRNEG | T3/E3 Receive Differential Input | Accepts bipolar T3 (B3ZS) or E3 (HDB3) line signals; requires external termination matching |
| HTPOS / HTNEG | T3/E3 Transmit Differential Output | Drives transformer-coupled DS3/E3 line interface; supports C-bit parity mode framing |
| LTCLK / LTDAT | T1/E1 Transmit Clock/Data Inputs | Sampled at rising edge of LTCLK; supports channelized/unchannelized T1/E1 data streams |
| LRCLK / LRDAT | T1/E1 Receive Clock/Data Outputs | Outputs recovered T1/E1 data synchronized to LRCLK; used for drop-and-insert paths |
| TCK / TMS / TDI / TDO | JTAG Test Access Port | Enables IEEE 1149.1 boundary scan, device ID readout, and in-system programming |
Key Features
| Feature | Design Value |
|---|---|
| Dual T1/E1 Drop-and-Insert Ports | Enables selective extraction and insertion of individual T1/E1 channels into/from T3/E3 payloads without full demux/mux reconfiguration |
| Integrated HDLC Controller | Autonomously processes LAPD messages using 256-byte FIFOs - offloads host processor during signaling protocol handling |
| On-Chip BERT | Performs real-time bit error rate testing on T3/E3 and T1/E1 paths - eliminates need for external test equipment during production burn-in |
| C-Bit Parity Mode Support | Ensures compatibility with legacy T3 network elements requiring C-bit parity for payload integrity verification |
| IEEE 1149.1 JTAG Compliance | Supports boundary-scan testing, device identification, and debug access - critical for high-reliability telecom board validation |
Applications
| Wide Area Network Access Equipment | PBX Systems |
|---|---|
Use Scenario: Aggregating multiple T1/E1 lines from remote branch offices into a single T3/E3 uplink for central office connectivity. IC Role / Device Role / Timing Role: DS3112ND1E acts as the primary T3/E3 framer and M13/E13 multiplexer, performing line framing, overhead insertion, and hierarchical channel mapping. Use Value: Enables deterministic latency and jitter control per ANSI T1.107, supporting SLA-compliant voice/data transport over copper or fiber DS3/E3 links. | Use Scenario: Providing DS3/E3 trunk interface between legacy PBX switch fabric and carrier T3/E3 transport networks. IC Role / Device Role / Timing Role: DS3112ND1E serves as a standalone T3/E3 framer with alarm detection and BERT-based link health monitoring. Use Value: Delivers carrier-grade T3/E3 framing compliance (ITU G.703, Bellcore GR-499), ensuring interoperability with central office switches and reducing field failure rates. |
| Digital Cross-Connect Systems | Test & Measurement Equipment |
Use Scenario: Reconfigurable grooming of T1/E1 tributaries within a T3/E3 signal for dynamic circuit provisioning. IC Role / Device Role / Timing Role: DS3112ND1E provides dual T1/E1 drop-and-insert functionality alongside full T3/E3 payload loopback for path verification. Use Value: Allows non-disruptive circuit reconfiguration and real-time performance validation without service interruption. | Use Scenario: Embedded diagnostics engine in portable DS3/E3 analyzers for field technicians. IC Role / Device Role / Timing Role: DS3112ND1E supplies integrated BERT, HDLC processing, and multi-mode loopbacks - replacing discrete test ICs. Use Value: Reduces BOM count and PCB area while enabling automated pass/fail reporting per RFC1407 managed object definitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar T3/E3 framer and multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS3122N+ | Successor device with enhanced E3 support, extended temperature range (-40°C to +85°C), and improved power efficiency; retains pin compatibility with DS3112ND1E | Targeted at new designs requiring higher E3 channel density and lower thermal footprint | Select DS3122N+ for greenfield deployments where long-term availability and E3 optimization are prioritized |
| MC28L34A | Legacy Motorola T3 framer with M13 multiplexing only; no E13/G.747 support, no integrated HDLC or BERT; requires external controllers | Suitable for cost-sensitive T3-only upgrades where E3/G.747 and autonomous protocol handling are unnecessary | Choose MC28L34A only for brownfield T3 maintenance where legacy component reuse is mandatory |
Compared with DS3122N+, DS3112ND1E offers broader multiplexing flexibility (M13/E13/G.747) and richer embedded diagnostics but lacks newer power/performance optimizations. Against MC28L34A, DS3112ND1E delivers full T3/E3 dual-standard support and system-level integration - reducing external component count by up to 7 devices in typical implementations.
Availability
DS3112ND1E is available at Aetrix Electronics and suitable for wide area network access equipment, digital cross-connect systems, and telecom test instrumentation requiring stable component supply across extended temperature ranges (-40°C to +85°C) and long product lifecycle commitments.
Supply support for DS3112ND1E 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 precision analog, mixed-signal, and high-reliability communication ICs for telecom, industrial, and automotive markets.
The DS3112ND1E belongs to Maxim's TEMPE (T3/E3 MultiPlexEr) product line, engineered specifically for carrier-class DS3/E3 layer-1 transport in access concentrators, PBX gateways, and network test equipment.
FAQ
What is the operating temperature range for DS3112ND1E?
The DS3112ND1E is specified for industrial operation from -40°C to +85°C. This extended temperature range aligns with requirements for outdoor telecom cabinets and uncontrolled environment deployments. The 'N' suffix in DS3112ND1E explicitly denotes the -40°C to +85°C grade, distinguishing it from commercial-grade variants like DS3112 (0°C to +70°C). Thermal derating guidelines are provided in Section 12 of the official Maxim datasheet.
Does DS3112ND1E support both T3 and E3 framing standards simultaneously?
No, DS3112ND1E operates in either T3 mode or E3 mode - not concurrently. Mode selection is configured at power-up via hardware pins (MODE[2:0]) and cannot be changed dynamically during operation. In T3 mode, it supports M13 multiplexing and B3ZS encoding; in E3 mode, it supports E13 multiplexing and HDB3 encoding. The DS3112ND1E datasheet confirms this mutual exclusivity in Sections 1.2.2 and 1.2.3.
How does the HDLC controller in DS3112ND1E reduce host processor load?
The HDLC controller in DS3112ND1E autonomously handles LAPD message framing, CRC generation/checking, and 256-byte FIFO buffering - eliminating the need for continuous CPU polling or interrupt-driven byte-by-byte processing. This allows the host processor to remain in low-power states during signaling traffic bursts. DS3112ND1E's HDLC engine is fully register-configurable and operates independently once initialized, as documented in Section 9 of the datasheet.
Can DS3112ND1E perform T1/E1 drop-and-insert without full T3/E3 demultiplexing?
Yes, DS3112ND1E supports independent T1/E1 drop-and-insert functionality even when operating as a standalone T3/E3 framer (i.e., with multiplexer disabled). The two dedicated low-speed ports (LTCLK/LTDAT and LRCLK/LRDAT) allow direct access to individual T1/E1 tributaries within the T3/E3 payload. This capability is explicitly enabled via the T1/E1 Drop and Insert Control Registers (Section 7.7), and does not require activation of the M13/E13 multiplexer block.
What JTAG instructions are supported by DS3112ND1E?
DS3112ND1E implements the full IEEE 1149.1 instruction set including SAMPLE/PRELOAD, EXTEST, BYPASS, IDCODE, HIGHZ, and CLAMP. The IDCODE instruction returns a unique 32-bit identifier confirming device identity and revision, while EXTEST enables boundary-scan testing of interconnects. These instructions are detailed in Section 11.2 of the DS3112ND1E datasheet, with boundary-scan register mapping defined in Table 11-2.
DS3112ND1E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 256-BGA
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Framer
- Interface:
- E3, T3
- Number of Circuits:
- 1
- Voltage - Supply:
- 3.135V ~ 3.465V
- Current - Supply:
- 150mA
- Power (Watts):
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 256-PBGA (27x27)
DS3112ND1E FAQ
1.How can I place an order for DS3112ND1E through Aetrix?
Please submit a Request for Quotation (RFQ) for DS3112ND1E 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 DS3112ND1E reliable?
The price and inventory of DS3112ND1E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS3112ND1E is usually 5 days.
3.What payment methods are accepted for DS3112ND1E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS3112ND1E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS3112ND1E?
DS3112ND1E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS3112ND1E 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 DS3112ND1E?
For technical support, including DS3112ND1E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS3112ND1E requirements.
6.How does Aetrix verify that DS3112ND1E is sourced from the original manufacturer or authorized distributors?
All DS3112ND1E 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 DS3112ND1E meets industry standards.
7.What is the process for return or replacement of DS3112ND1E?
All DS3112ND1E units undergo pre-shipment inspection (PSI). If there is an issue with DS3112ND1E, 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 DS3112ND1E part is unused and in its original packaging.
Return procedure for DS3112ND1E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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