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Analog Devices Inc./Maxim Integrated DS26334GN+
- Part No.:
- DS26334GN+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Telecom
- Package:
- -
- Datasheet:
-
DS26334GN+.pdf
- Description:
- IC SLIC 16CH 256CSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,733
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Product details
Overview
DS26334GN+ 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, internal impedance matching without external resistors, crystal-less jitter attenuation, and G.772 nonintrusive monitoring - deployed in wireless base stations and T1 digital cross-connects.
For engineers reviewing the DS26334GN+ datasheet, DS26334GN+ pinout, DS26334GN+ application, or DS26334GN+ equivalent, key selection considerations include its -40°C to +85°C industrial temperature range, 256-ball TE-CSBGA package, dual-rail/AMI-HDB3-B8ZS encoding support, receiver signal level indicator (-3dB to -43dB in E1 mode), and built-in BERT diagnostics for telecom infrastructure validation.
Technical Context
The DS26334GN+ integrates 16 independent LIUs with programmable transmit/receive-side impedance matching, on-chip PLL-based clock synthesis from a single master clock (e.g., 2.048MHz or 1.544MHz), and configurable analog/digital loss-of-signal detection per ANSI T1.231, ITU-T G.775, and ETS 300 233 standards.
It supports both Intel- and Motorola-style 8-bit parallel interfaces plus a 4-wire serial interface, features JTAG boundary scan (IEEE 1149.1), and provides analog/digital loopback modes alongside two independent BERT engines - one per 8-channel group - for channel-level bit error testing and diagnostics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 16 independent E1/T1/J1 LIUs with per-channel mode selection |
| Supply Voltage | Single 3.3V rail; I/O pins 5V tolerant - simplifies power design and eliminates level shifters |
| Operating Temp | -40°C to +85°C - qualified for industrial and outdoor telecom equipment deployment |
| Line Encoding | Software-selectable AMI, HDB3 (E1), or B8ZS (T1/J1) - enables global standard compliance in one device |
| Receiver Sensitivity | -3dB to -43dB in E1 mode, -2.5dB to -38dB in T1 mode (2.5dB steps) - supports wide dynamic range of cable loss conditions |
| Master Clock Input | Accepts multiple frequencies (e.g., 2.048MHz, 1.544MHz, or multiples); internally adapted for E1/T1/J1 timing - removes need for external clock dividers |
| Jitter Attenuation | Crystal-less jitter attenuator compliant with G.772 - enables stable clock recovery without external VCXO or loop filters |
Pinout & Package
The DS26334GN+ is housed in a 256-ball TE-CSBGA (Thermally Enhanced Chip Scale Ball Grid Array) package, measuring 15mm × 15mm with 0.8mm ball pitch, optimized for high-density telecom PCB layouts and thermal performance in fanless systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TTIP/TRING (1–16) | Transmit differential pair output | Drives balanced T1/E1/J1 line signals; supports short/long-haul templates and short-circuit protection |
| RTIP/RRING (1–16) | Receive differential pair input | Accepts line signals with programmable gain and monitor mode for up to 42dB total attenuation (resistive + cable) |
| RCLK, TCLK | Receiver/transmitter clock outputs | Provides two independent clock references derived from internal synthesizer - usable for system synchronization or daisy-chaining |
| TNEG/TPOS, RNEG/RPOS | Differential data strobes | Supports LVDS-like timing for high-speed parallel host interface operation in Intel/Motorola modes |
| MODE[1:0] | Interface mode select | Configures 8-bit parallel (Intel/Motorola) or 4-wire serial host interface - no external logic required |
| TMS, TCK, TDI, TDO | JTAG test access port | Enables IEEE 1149.1 boundary scan for production test and in-system debug without additional hardware |
Key Features
| Feature | Design Value |
|---|---|
| Fully internal impedance match | Eliminates all external termination resistors - reduces BOM count and layout area for 16-channel designs |
| Software-selectable transmit/receive impedance | Per-LIU configuration via register writes - enables mixed E1/T1 deployments on same device without hardware changes |
| G.772 nonintrusive monitoring | Real-time signal integrity analysis without disrupting live traffic - critical for carrier-grade fault isolation |
| Two integrated BERT engines | Independent PRBS generation and detection per 8-channel group - accelerates field commissioning and maintenance |
| Crystal-less jitter attenuator | Meets G.772 jitter transfer/attenuation specs using only the master clock - removes VCXO, loop filter, and associated tuning effort |
Applications
| Wireless Base Stations | T1 Digital Cross-Connects |
|---|---|
Use Scenario: Backhaul interface between BTS and BSC in macro/micro-cell sites requiring E1/T1 connectivity over varying distances and environmental conditions. IC Role / Device Role / Timing Role: Line interface unit providing physical layer framing, clock recovery, and AIS handling for synchronous transport. Use Value: Single-chip 16-channel support reduces board space and power vs. discrete LIU solutions; -40°C to +85°C rating ensures reliability in uncontrolled outdoor enclosures. | Use Scenario: Aggregation and switching of multiple T1 lines in central office or enterprise edge locations with strict uptime requirements. IC Role / Device Role / Timing Role: Physical layer transceiver enabling loss-of-signal detection, bipolar violation monitoring, and remote loopback for service assurance. Use Value: Built-in BERT and G.772 monitoring allow automated SLA verification without external test gear - reducing OPEX for network operators. |
| E1/T1/J1 Multiplexer | ISDN Primary Rate Interface |
Use Scenario: Channel bank consolidating 30/24 voice/data channels into E1/T1 trunks for legacy PBX or VoIP gateway integration. IC Role / Device Role / Timing Role: Short/long-haul LIU performing line coding (HDB3/B8ZS), zero suppression, and receive level indication for adaptive gain control. Use Value: Software-selectable encoding and per-channel impedance matching enable flexible multi-standard support on one hardware platform. | Use Scenario: PRI termination in business-class routers or media gateways connecting to PSTN via E1/T1 circuits. IC Role / Device Role / Timing Role: Physical layer interface generating/detecting AIS, performing digital/analog LOS detection, and supporting JTAG-based firmware updates. Use Value: Single 3.3V supply and 5V-tolerant I/O simplify power and interface design; JTAG enables secure in-field reconfiguration without hardware modification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar line interface unit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS26528G+ | 32-channel E1/T1 LIU in 324-ball TE-CSBGA; higher channel density but larger package and higher power | Targeted at high-port-count muxes and core routers where space permits larger footprint | Select DS26528G+ when scaling beyond 16 channels; DS26334GN+ remains optimal for compact 16-channel edge nodes |
| MAX3392E | Single-channel T1/E1 LIU in 48-pin TQFP; no on-chip clock synthesis or BERT; requires external termination | Suitable for low-channel-count, cost-sensitive designs where integration is less critical than unit cost | Choose MAX3392E for prototyping or low-volume applications; DS26334GN+ delivers superior integration and diagnostics for production telecom gear |
Compared with DS26528G+, DS26334GN+ offers smaller footprint and lower per-channel power at 16-channel scale; versus MAX3392E, it provides full integration, diagnostics, and industrial temperature support - making it the preferred choice for volume telecom infrastructure designs.
Availability
DS26334GN+ is available at Aetrix Electronics and suitable for wireless base stations, T1 digital cross-connects, and E1/T1/J1 multiplexers requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for DS26334GN+ 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 power management ICs for industrial, communications, and computing applications.
The DS26334GN+ belongs to Maxim's telecom line interface portfolio, designed specifically for carrier-grade E1/T1/J1 physical layer interfacing in space-constrained, thermally demanding infrastructure equipment.
FAQ
What is the operating temperature range of the DS26334GN+?
The DS26334GN+ is rated for operation from -40°C to +85°C, meeting industrial temperature requirements for deployment in outdoor wireless base stations, central office equipment, and other telecom infrastructure where ambient conditions exceed commercial grade limits. This specification is confirmed in the official Maxim ordering information table and applies specifically to the DS26334GN+ variant with Pb-free packaging.
Does the DS26334GN+ require external termination resistors?
No, the DS26334GN+ features fully internal impedance matching for both transmit and receive paths, eliminating the need for external termination resistors. This capability is explicitly stated in the FEATURES section of the datasheet and verified across all 16 channels, reducing BOM cost and PCB area while improving signal integrity consistency across temperature and voltage variations.
What clock frequencies does the DS26334GN+ accept for its master clock input?
The DS26334GN+ accepts a master clock input that can be a multiple of 2.048MHz (for E1) or 1.544MHz (for T1/J1), such as 8.192MHz, 12.288MHz, or 24.576MHz. The on-chip synthesizer adapts this input to generate precise E1/T1/J1 frame clocks - a capability confirmed in the GENERAL DESCRIPTION and detailed in Table 6-15 (DS26334 MCLK Selections) of the datasheet.
How many BERT engines does the DS26334GN+ integrate, and how are they allocated?
The DS26334GN+ integrates two independent BERT (Bit Error Rate Tester) engines: one dedicated to channels 1–8 and another to channels 9–16. This allocation is documented in the functional diagram, register maps (Tables 6-18 and 6-19), and BERT section (5.9), enabling concurrent diagnostic testing of two 8-channel groups without time-sharing overhead.
Is JTAG boundary scan supported on the DS26334GN+?
Yes, the DS26334GN+ implements full IEEE 1149.1 JTAG boundary scan with TMS, TCK, TDI, and TDO pins. It supports EXTEST, HIGHZ, CLAMP, SAMPLE/PRELOAD, IDCODE, and BYPASS instructions as defined in Section 7 of the datasheet - enabling production test, in-system debugging, and verification of interconnect integrity on dense telecom PCBs.
DS26334GN+ 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:
- -
DS26334GN+ FAQ
1.How can I place an order for DS26334GN+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS26334GN+ 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 DS26334GN+ reliable?
The price and inventory of DS26334GN+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS26334GN+ is usually 5 days.
3.What payment methods are accepted for DS26334GN+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS26334GN+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS26334GN+?
DS26334GN+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS26334GN+ 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 DS26334GN+?
For technical support, including DS26334GN+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS26334GN+ requirements.
6.How does Aetrix verify that DS26334GN+ is sourced from the original manufacturer or authorized distributors?
All DS26334GN+ 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 DS26334GN+ meets industry standards.
7.What is the process for return or replacement of DS26334GN+?
All DS26334GN+ units undergo pre-shipment inspection (PSI). If there is an issue with DS26334GN+, 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 DS26334GN+ part is unused and in its original packaging.
Return procedure for DS26334GN+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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