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Analog Devices Inc./Maxim Integrated DS26334G+
- Part No.:
- DS26334G+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Telecom
- Package:
- 256-LBGA, CSBGA
- Datasheet:
-
DS26334G+.pdf
- Description:
- IC TELECOM INTERFACE 256CSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,803
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Product details
Overview
DS26334G+ 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), and crystal-less jitter attenuation. It delivers -38dB T1 and -43dB E1 receiver sensitivity with 2.5dB resolution level indication, and integrates dual BERT testers for diagnostics in telecom infrastructure applications.
For engineers reviewing the DS26334G+ datasheet, DS26334G+ pinout, DS26334G+ application, or DS26334G+ equivalent, key selection criteria include its 256-ball TE-CSBGA package, IEEE 1149.1 JTAG boundary scan support, G.772 nonintrusive monitoring capability, and software-selectable AMI/HDB3/B8ZS encoding - all critical for carrier-grade TDM equipment design and validation.
Technical Context
The DS26334G+ implements 16 independent LIUs with configurable transmit/receive-side impedance matching and selectable single-rail or dual-rail operation. Its on-chip synthesizer adapts external master clocks (multiples of 1.544MHz or 2.048MHz) to generate precise E1/T1/J1 frame and bit clocks without external PLLs.
Each channel supports analog/digital loss-of-signal detection per ANSI T1.231, ITU-T G.775, and ETS 300 233, plus AIS generation/detection and bipolar violation monitoring. The integrated jitter attenuator meets G.772 requirements for nonintrusive monitoring across 14–30dB resistive + 12–30dB cable attenuation combinations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 16 independent E1/T1/J1 LIUs - enables full T1/E1 multiplexer or channel bank integration in one device |
| Supply Voltage | Single 3.3V rail with 5V-tolerant I/O - simplifies power architecture and eliminates level-shifting for host interfaces |
| Receiver Sensitivity | -38dB (T1 mode), -43dB (E1 mode) in 2.5dB steps - supports long-haul signal integrity over degraded lines |
| Encoding Support | AMI, HDB3 (E1), B8ZS (T1/J1) - ensures standards-compliant line coding for global telecom deployment |
| Interface Options | 8-bit parallel (Intel/Motorola modes) or 4-wire serial - provides flexible host controller integration with minimal pin count |
| JTAG Compliance | IEEE 1149.1 boundary scan - enables production testability and board-level debug without physical probe access |
| Built-in Test | Two independent BERT engines - allows concurrent channel diagnostics without external test equipment |
Pinout & Package
DS26334G+ is housed in a 256-ball TE-CSBGA (Thermally Enhanced Chip Scale Ball Grid Array), 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 cards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TTIP/TRING | Transmit differential pair per channel | Drives balanced T1/E1 line signals with programmable amplitude and template compliance |
| RTIP/RRING | Receive differential pair per channel | Accepts short/long-haul inputs with adaptive gain, peak detection, and slicer threshold control |
| TCLK/RCLK | Transmit/Receive clock reference | Synchronizes data transfer between DS26334G+ and host processor or timing source |
| TPOS/TNEG, RPOS/RNEG | Differential signaling terminals | Supports both single-rail and dual-rail operation modes per channel for legacy and modern line interface designs |
| MODE | Parallel/serial interface select | Configures host interface as 8-bit parallel (Intel/Motorola) or 4-wire serial at power-up |
| JTAG TCK/TMS/TDI/TDO | Boundary scan test interface | Enables IEEE 1149.1-compliant structural testing and in-system programming |
Key Features
| Feature | Design Value |
|---|---|
| Fully internal impedance match | Eliminates need for 75Ω or 120Ω external termination resistors - reduces BOM cost and PCB area |
| Software-selectable encoding | Per-channel configuration of AMI, HDB3, or B8ZS via register write - enables mixed-standard systems without hardware change |
| G.772 nonintrusive monitoring | Real-time signal analysis without disrupting live traffic - essential for carrier-grade service assurance |
| Crystal-less jitter attenuator | Meets ITU-T G.823/G.824 mask requirements using only an external master clock - removes crystal oscillator and associated layout constraints |
| Transmit short-circuit protection | Auto-shutdown and fault reporting on line short events - prevents damage during installation or maintenance |
Applications
| T1 Digital Cross-Connects | ATM and Frame Relay Equipment |
|---|---|
Use Scenario: Aggregating and switching multiple T1 circuits 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 span. Use Value: DS26334G+ delivers -38dB T1 sensitivity and dual BERT support, enabling reliable cross-connect operation over extended distances and aging copper plant. | Use Scenario: Backhauling ATM cells or Frame Relay frames across legacy TDM infrastructure. IC Role / Device Role / Timing Role: Physical layer transceiver converting digital payloads to standardized T1/E1 line signals with HDB3/B8ZS encoding. Use Value: DS26334G+'s software-selectable encoding and per-channel E1/T1/J1 mode allow seamless interoperation with diverse network elements without redesign. |
| Wireless Base Stations | E1/T1/J1 Multiplexer and Channel Banks |
Use Scenario: Connecting BTS controllers to mobile switching centers via E1/T1 backhaul links. IC Role / Device Role / Timing Role: Short/long-haul LIU managing line driver/receiver functions, jitter attenuation, and loss-of-signal detection per link. Use Value: DS26334G+ supports 14–30dB resistive + 12–30dB cable attenuation per G.772, ensuring robust performance in variable outdoor cabinet environments. | Use Scenario: Consolidating up to 16 voice/data channels into a single E1/T1 stream for transport. IC Role / Device Role / Timing Role: Multi-channel line interface with integrated clock synthesis and frame alignment logic. Use Value: DS26334G+'s on-chip synthesizer generates all required E1/T1 clocks from one master input, reducing timing subsystem complexity and component count. |
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+ | 32-channel LIU with identical 256-ball TE-CSBGA package and same core architecture; higher channel density but no J1 support | Targeted at high-port-count E1/T1 muxes where J1 compatibility is not required | Select DS26528+ when scaling beyond 16 channels and J1 operation is unnecessary |
| MAX3695A | Single-channel T1/E1 LIU in 48-pin TQFP; lacks on-chip clock synthesis, BERT, and G.772 monitoring | Suitable for low-channel-count add-on cards or replacement modules where space and feature set are less constrained | Choose MAX3695A only for retrofit or low-density applications where DS26334G+ features are unused |
Compared with DS26334G+, DS26528+ offers double channel count in the same footprint but omits J1 support, while MAX3695A trades integration for simplicity and lower cost per channel - making DS26334G+ optimal for balanced 16-channel E1/T1/J1 systems requiring full telecom feature compliance.
Availability
DS26334G+ is available at Aetrix Electronics and suitable for T1 digital cross-connects, wireless base station backhaul, and E1/T1 multiplexer applications requiring stable component supply, RoHS-compliant packaging, and long-term industrial temperature support.
Supply support for DS26334G+ 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 industrial, communications, and computing markets.
The DS26334G+ belongs to Maxim's telecom line interface product line, designed specifically for carrier-class TDM infrastructure requiring multi-standard E1/T1/J1 support, jitter compliance, and nonintrusive monitoring in compact form factors.
FAQ
What is the operating temperature range for DS26334G+?
The DS26334G+ is rated for 0°C to +70°C ambient operation. This commercial temperature grade is validated for use in controlled-environment telecom equipment such as central office line cards, enterprise routers, and indoor base station cabinets. The '+' suffix confirms lead(Pb)-free and RoHS-compliant packaging, aligning with modern environmental compliance requirements for the DS26334G+.
Does DS26334G+ support both short-haul and long-haul E1/T1 operation?
Yes, DS26334G+ supports both short-haul and long-haul operation per channel. It includes programmable transmit templates and receive monitor mode calibrated for 14–30dB resistive attenuation plus 12–30dB cable loss, meeting ITU-T G.772 requirements. The DS26334G+ achieves this through configurable front-end gain, adaptive equalization, and dual-rail output drive capability - all verified in the official DS26334 datasheet.
How does DS26334G+ handle clock generation without an external crystal?
DS26334G+ uses an on-chip synthesizer that accepts a single master clock (e.g., 8.192MHz, 16.384MHz, or other multiples of 1.544/2.048MHz) and internally derives all required E1/T1/J1 bit and frame clocks. This crystal-less jitter attenuator meets G.823/G.824 masks and eliminates external oscillators - a key design advantage confirmed in the DS26334G+ functional description and clock architecture section.
Can DS26334G+ be used in J1 applications?
Yes, DS26334G+ explicitly supports J1 operation alongside E1 and T1. The device allows independent per-channel selection of E1, T1, or J1 mode, including J1-specific line encoding (B8ZS) and timing parameters. This multi-standard capability is documented in the GENERAL DESCRIPTION, FEATURES, and APPLICATIONS sections of the DS26334G+ datasheet.
What host interface options does DS26334G+ provide?
DS26334G+ supports two host interface configurations: an 8-bit parallel interface compatible with Intel or Motorola bus timing, and a 4-wire serial interface (clock, data in/out, chip select). The MODE pin selects interface type at power-up, and register maps define full control for both modes - details are specified in Sections 4 (Pin Descriptions) and 5.1 (Port Operation) of the DS26334G+ datasheet.
DS26334G+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 256-LBGA, CSBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Function:
- Line Interface Unit (LIU)
- Interface:
- LIU
- Number of Circuits:
- 16
- Voltage - Supply:
- 3.135V ~ 3.465V
- Current - Supply:
- 500mA
- Power (Watts):
- -
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 256-CSBGA (17x17)
DS26334G+ FAQ
1.How can I place an order for DS26334G+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS26334G+ 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 DS26334G+ reliable?
The price and inventory of DS26334G+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS26334G+ is usually 5 days.
3.What payment methods are accepted for DS26334G+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS26334G+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS26334G+?
DS26334G+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS26334G+ 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 DS26334G+?
For technical support, including DS26334G+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS26334G+ requirements.
6.How does Aetrix verify that DS26334G+ is sourced from the original manufacturer or authorized distributors?
All DS26334G+ 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 DS26334G+ meets industry standards.
7.What is the process for return or replacement of DS26334G+?
All DS26334G+ units undergo pre-shipment inspection (PSI). If there is an issue with DS26334G+, 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 DS26334G+ part is unused and in its original packaging.
Return procedure for DS26334G+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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