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Analog Devices Inc./Maxim Integrated DS26334GNA3+
- Part No.:
- DS26334GNA3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Telecom
- Package:
- -
- Datasheet:
-
DS26334GNA3+.pdf
- Description:
- IC LIU E1/T1/J1 3.3V 256-CSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,286
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Product details
Overview
DS26334GNA3+ from Maxim Integrated is a 16-channel E1/T1/J1 short- and long-haul line interface unit (LIU) operating from a single 3.3V supply, supporting independent per-channel E1/T1/J1 selection, fully internal impedance matching (no external resistors), crystal-less jitter attenuation, and dual-rail or single-rail transmit/receive mode. It serves in T1 digital cross-connects and E1/T1/J1 multiplexers requiring high-density, low-power telecom line interfacing.
For engineers reviewing the DS26334GNA3+ datasheet, DS26334GNA3+ pinout, DS26334GNA3+ application, or DS26334GNA3+ equivalent, key selection considerations include its 256-ball TE-CSBGA package, G.772 nonintrusive monitoring capability, -38dB to -2.5dB T1-mode receive signal level indication, dual built-in BERT testers, and software-selectable AMI/HDB3/B8ZS encoding/decoding.
Technical Context
The DS26334GNA3+ integrates 16 independent LIUs with configurable front-end gain, programmable pulse templates for short/long-haul operation, and on-chip PLL-based clock synthesis from a single master clock (e.g., 2.048MHz or 1.544MHz). Each channel supports AIS detection/generation and digital/analog loss-of-signal per T1.231, G.775, and ETS 300 233.
It implements JTAG boundary scan per IEEE 1149.1, offers 8-bit parallel (Intel/Motorola mode) or 4-wire serial host interface, and provides receiver monitor mode handling up to 30dB resistive + 30dB cable attenuation. Transmit short-circuit protection and G.772-compliant nonintrusive monitoring are hardware-enforced features.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 16 independent E1/T1/J1 LIUs - enables full T1/E1 trunk density without external channel aggregation. |
| Supply Voltage | Single 3.3V ±5% - simplifies power design; I/O pins are 5V tolerant for legacy system interfacing. |
| Line Encoding | Software-selectable AMI, HDB3 (E1), or B8ZS (T1/J1) - ensures protocol compliance across regional standards. |
| Receive Sensitivity | -38dB to -2.5dB in T1 mode, -43dB to -3dB in E1 mode (2.5dB steps) - supports wide dynamic range of line signal levels. |
| Master Clock Input | Accepts 2.048MHz (E1) or 1.544MHz (T1/J1) multiples - eliminates need for multiple crystal sources. |
| Built-in Test | Two independent BERT engines - enables concurrent channel diagnostics without external test equipment. |
| JTAG Support | IEEE 1149.1 compliant boundary scan - enables PCB-level interconnect testing and debug visibility. |
Pinout & Package
DS26334GNA3+ is housed in a 256-ball TE-CSBGA (Thermally Enhanced Chip Scale Ball Grid Array) package, measuring 15mm × 15mm with 0.8mm ball pitch. This is the smallest available package for a 16-channel LIU, optimized for high-density telecom line card layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TNEG / TPOS | Transmit differential pair | Drives balanced T1/E1/J1 line signals; supports short- and long-haul templates via register configuration. |
| RNEG / RPOS | Receive differential pair | Accepts line signals with programmable gain; enables loss-of-signal detection per T1.231/G.775. |
| TTIP / TRING | Transmit tip/ring (single-ended) | Legacy interface option; used when differential signaling is not implemented on board. |
| RTIP / RRING | Receive tip/ring (single-ended) | Supports analog monitoring paths and hybrid interface configurations. |
| RCLK / TCLK | Receive/transmit clock outputs | Provides two independent clock references derived from on-chip synthesizer for downstream timing distribution. |
| MODE / LOSS | Configuration and status control | MODE selects parallel/serial interface mode; LOSS indicates per-channel loss-of-signal condition. |
| JTAG TCK/TMS/TDI/TDO | JTAG test access port | Enables IEEE 1149.1 boundary scan for manufacturing test and in-system debug. |
Key Features
| Feature | Design Value |
|---|---|
| Fully internal impedance match | Eliminates all external termination resistors - reduces BOM count and layout complexity for all 16 channels. |
| Crystal-less jitter attenuator | On-chip jitter cleanup without external VCXO or loop filter components - lowers system cost and footprint. |
| G.772 nonintrusive monitoring | Real-time line performance observation without disrupting live traffic - essential for carrier-grade SLA monitoring. |
| Receiver monitor mode | Handles combined 14–30dB resistive + 12–30dB cable attenuation - accommodates diverse field deployment scenarios. |
| Dual BERT testers | Independent PRBS generation/detection per channel group (1–8 and 9–16) - enables parallel link validation during bring-up. |
Applications
| T1 Digital Cross-Connects | ATM and Frame Relay Equipment |
|---|---|
|
Use Scenario: Aggregating and switching multiple T1 trunks in central office or enterprise edge nodes. IC Role / Device Role / Timing Role: Line interface unit providing physical layer framing, clock recovery, and AIS handling for each T1 channel. Use Value: Single-chip support for 16 T1 lines reduces component count by >50% versus discrete LIU solutions while maintaining ANSI T1.231 compliance. |
Use Scenario: Backhaul connectivity between ATM switches and Frame Relay access devices over E1/T1 leased lines. IC Role / Device Role / Timing Role: Physical-layer transceiver enabling synchronous data transport with HDB3/B8ZS encoding and precise clock alignment. Use Value: Software-selectable encoding and dual-clock outputs simplify interoperability across mixed E1/T1 network domains. |
| Wireless Base Stations | E1/T1/J1 Multiplexer and Channel Banks |
|
Use Scenario: Connecting BTS controllers to backhaul transport networks using T1 or E1 interfaces. IC Role / Device Role / Timing Role: Short/long-haul LIU delivering robust signal integrity across varying cable lengths and environmental conditions. Use Value: Receiver monitor mode and programmable gain ensure reliable operation despite RF site-specific line impairments. |
Use Scenario: Consolidating multiple voice/data channels into standardized E1/T1 frames for core network handoff. IC Role / Device Role / Timing Role: Multi-channel line interface with per-LIU independent configuration for mixed E1/T1/J1 service provisioning. Use Value: Independent channel selection allows flexible service mapping without hardware reconfiguration or firmware changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar line interface unit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS26528+ (Maxim) | 8-channel LIU; supports same E1/T1/J1 protocols but half the channel density; identical 256-ball TE-CSBGA package. | Targeted at lower-port-count systems where space or cost constraints preclude 16-channel integration. | Select DS26528+ when 8-channel capacity suffices and board area must be minimized without changing package footprint. |
| MC3474x series (NXP) | 16-channel LIU with integrated transformer drivers; requires external termination resistors; no on-chip jitter attenuator. | Used in legacy industrial T1 systems where transformer-coupled interfaces dominate and jitter specs are less stringent. | Choose MC3474x only if existing designs mandate transformer coupling and external clock clean-up circuitry is acceptable. |
Compared with DS26334GNA3+, DS26528+ halves channel count but retains identical package and feature set, making it suitable for scalable designs; MC3474x trades internal impedance matching and jitter attenuation for transformer driver integration, limiting suitability to non-crystal-less, higher-power deployments.
Availability
DS26334GNA3+ is available at Aetrix Electronics and suitable for T1 digital cross-connects, E1/T1/J1 multiplexers, and wireless base station backhaul requiring stable component supply, RoHS-compliant packaging, and long-term industrial temperature support (-40°C to +85°C).
Supply support for DS26334GNA3+ 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 applications.
The DS26334GNA3+ belongs to Maxim's telecom line interface product line, designed specifically for high-channel-count, low-power E1/T1/J1 infrastructure equipment requiring integrated clock synthesis, diagnostics, and standards-compliant physical layer interfacing.
FAQ
What is the operating temperature range for DS26334GNA3+?
The DS26334GNA3+ is rated for industrial operation from -40°C to +85°C. This extended temperature range ensures reliable performance in demanding telecom environments such as outdoor base stations and central office line cards where ambient temperatures fluctuate significantly. The device maintains full specification compliance-including receiver sensitivity, jitter attenuation, and BERT accuracy-across this entire range.
Does DS26334GNA3+ require external termination resistors?
No, DS26334GNA3+ features fully internal impedance matching for both transmit and receive paths, eliminating the need for external termination resistors. This capability applies across all 16 channels and supports both short- and long-haul modes. Internal calibration ensures consistent 120Ω (T1) or 75Ω (E1) line impedance without manual resistor placement or trimming.
How does DS26334GNA3+ handle clock generation for E1 and T1 standards?
DS26334GNA3+ uses an on-chip synthesizer that accepts a single master clock input (e.g., 2.048MHz for E1 or 1.544MHz for T1/J1) and internally generates all required line and frame clocks. It supports multiple master clock frequencies and adapts them automatically based on selected line standard, removing dependency on external clock generators or frequency translators.
Can DS26334GNA3+ perform simultaneous diagnostics on multiple channels?
Yes, DS26334GNA3+ integrates two independent BERT engines-one for channels 1–8 and another for channels 9–16-enabling concurrent bit error rate testing without time multiplexing. Each BERT supports PRBS-23 and repetitive pattern generation/detection, allowing full 16-channel validation in half the time of single-engine alternatives.
Is DS26334GNA3+ compatible with both Intel and Motorola parallel bus protocols?
Yes, DS26334GNA3+ supports 8-bit parallel host interface operation in both Intel and Motorola modes, selectable via the MODE pin. Pin functions adapt dynamically-including address/data multiplexing and strobe polarity-ensuring seamless integration with legacy FPGA, ASIC, or microcontroller buses regardless of architecture preference.
DS26334GNA3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Product Status:
- Obsolete
- Function:
- -
- Interface:
- -
- Number of Circuits:
- -
- Voltage - Supply:
- -
- Current - Supply:
- -
- Power (Watts):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
DS26334GNA3+ FAQ
1.How can I place an order for DS26334GNA3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS26334GNA3+ 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 DS26334GNA3+ reliable?
The price and inventory of DS26334GNA3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS26334GNA3+ is usually 5 days.
3.What payment methods are accepted for DS26334GNA3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS26334GNA3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS26334GNA3+?
DS26334GNA3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS26334GNA3+ 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 DS26334GNA3+?
For technical support, including DS26334GNA3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS26334GNA3+ requirements.
6.How does Aetrix verify that DS26334GNA3+ is sourced from the original manufacturer or authorized distributors?
All DS26334GNA3+ 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 DS26334GNA3+ meets industry standards.
7.What is the process for return or replacement of DS26334GNA3+?
All DS26334GNA3+ units undergo pre-shipment inspection (PSI). If there is an issue with DS26334GNA3+, 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 DS26334GNA3+ part is unused and in its original packaging.
Return procedure for DS26334GNA3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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