My Inquiry
My Account
Analog Devices Inc./Maxim Integrated DS26524GNA5
- Part No.:
- DS26524GNA5
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Telecom
- Package:
- 256-LBGA, CSBGA
- Datasheet:
-
DS26524GNA5.pdf
- Description:
- IC TELECOM INTERFACE 256CSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,799
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DS26524GNA5 from Maxim Integrated is a quad-channel T1/E1/J1 framer and line interface unit (LIU) IC supporting independent per-port configuration for long-haul and short-haul operation. It integrates four complete transceivers, crystal-less jitter attenuation meeting ITU-T G.823 and ETSI CTR 12/13, receive-signal level indication (–2.5dB to –44dB in E1 mode), T1-to-E1 conversion, and HDLC controllers. It is deployed in channel service units (CSUs) and T1/E1 test equipment requiring multi-protocol line integrity.
For engineers reviewing the DS26524GNA5 datasheet, DS26524GNA5 pinout, DS26524GNA5 application, or DS26524GNA5 equivalent, key selection criteria include per-port framing format support (D4/SLC-96/ESF for T1; G.704/CRC-4 for E1), software-selectable 75Ω/100Ω/110Ω/120Ω termination, LIU LOS compliance with G.775 and T1.231, and H.100 (CT Bus) backplane interface compatibility.
Technical Context
The DS26524GNA5 implements a fully integrated framer/LIU architecture with four independent channels, each featuring dual-path crystal-less jitter attenuators configurable for transmit or receive paths. Its clock synthesis supports external master clocks at multiples of 1.544MHz or 2.048MHz, internally adapted for T1 or E1 usage in host mode.
It provides flexible signaling extraction/insertion via system interface or microprocessor port, per-port alarm detection/insertion, and elastic store-based backplane timing management compliant with H.100 CT Bus. The device includes dedicated HDLC controllers per channel and full BERT functionality with repetitive pattern generation and error counting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| T1/E1/J1 Channels | 4 independent transceivers-enables single-chip replacement of discrete framer+LIU solutions in multi-span CSU/DSU designs. |
| Framing Support | T1: D4, SLC-96, ESF; E1: G.704, CRC-4 multiframe; J1: full support-allows field-reconfigurable deployment across North America, Europe, and Japan telecom infrastructures. |
| Jitter Attenuation | Crystal-less, meets ITU-T G.823, G.736, G.742 and AT&T Pub 62411-eliminates external VCXO and reduces BOM count while maintaining phase noise compliance. |
| Termination Options | Software-selectable 75Ω (E1 coax), 100Ω (T1 twisted pair), 110Ω (J1 twisted pair), 120Ω (E1 twisted pair)-supports mixed-cable plant without hardware change. |
| Rx Signal Level Range | –2.5dB to –44dB in E1 mode (≈2.5dB steps); –2.5dB to –36dB in T1 mode-enables precise loss monitoring and automatic gain adjustment in variable-attenuation links. |
| LOS Detection | Compliant with G.775, ETS 300 233, and T1.231-ensures interoperability with legacy and standards-based network elements during link failure events. |
| Backplane Interface | H.100 (CT Bus) compatible with elastic store buffering-guarantees deterministic TDM data transfer across backplanes with clock domain crossing. |
Pinout & Package
DS26524GNA5 is housed in a 256-ball TE-CSBGA package (56-G6028-001), 15mm × 15mm, 0.8mm ball pitch, RoHS-compliant, with exposed thermal pad. Pin functions are defined per Maxim's official pin description table (Rev 112907, Section 7.1) and validated against Figure 14-1 (Pin Configuration).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN | Master Clock Input | Accepts 1.544MHz/2.048MHz or integer multiples; internally divided/synchronized for T1/E1 frame timing generation. |
| RSYNC | Receive Frame Sync Input | Provides external frame alignment reference for backplane TDM bus; enables H.100 CT Bus mode operation. |
| TSSYNCIO | Transmit Sync I/O | Bidirectional sync signal for transmit-side elastic store control and CT Bus timing coordination. |
| RESET_N | Active-Low Reset | Asynchronous reset asserting internal state machines and registers; requires ≥100ns pulse width per datasheet Section 8.3. |
| INT_N | Interrupt Output | Open-drain active-low interrupt indicating alarm, LOS, or register-access completion across all four ports. |
| TDI/TDO/TCK/TMS | JTAG Test Access Port | IEEE 1149.1-compliant boundary scan interface for production test and in-system diagnostics. |
Key Features
| Feature | Design Value |
|---|---|
| T1-to-E1 Conversion | Hardware-accelerated protocol translation between T1 and E1 framing structures-enables interworking gateways without FPGA logic or external processors. |
| Per-Port Loopback Modes | Analog, local, remote, and dual loopbacks per channel-supports comprehensive line diagnostics and automated field testing without external hardware. |
| Transmit Open/Short Detection | Real-time fault sensing on line driver outputs-prevents damage and triggers alarm reporting before service degradation occurs. |
| HDLC Controllers (x4) | Dedicated HDLC receive/transmit engines per port-offloads protocol handling from host CPU and ensures deterministic bit-level framing for data services. |
| BIT-ERROR-RATE TEST (BERT) | On-chip PRBS generator (2^15–1, 2^23–1) and error counter per channel-replaces external BERT equipment for production line and field validation. |
Applications
| Channel Service Unit (CSU) | Data Service Unit (DSU) |
|---|---|
Use Scenario: Deployed in carrier-class CSUs terminating T1/E1 lines at customer premises, providing line conditioning, framing, and alarm relay. IC Role / Device Role / Timing Role: Acts as full-framing LIU with integrated jitter attenuation and LOS detection-serves as primary physical layer interface between telco line and backplane TDM switch fabric. Use Value: Eliminates need for separate framer and LIU ICs, reduces PCB area by >40%, and ensures G.775-compliant LOS response time under varying cable lengths. |
Use Scenario: Embedded in enterprise DSUs connecting legacy PBX or routers to digital leased lines, performing protocol adaptation and performance monitoring. IC Role / Device Role / Timing Role: Functions as dual-role framer/LIU with T1-to-E1 conversion and HDLC controller-enables seamless interconnection between North American and European networks. Use Value: Supports real-time RSLI reporting and BERT-based SLA verification, enabling proactive maintenance and SLA compliance reporting to end users. |
| T1/E1 Test Equipment | Telecom Muxes & Switches |
Use Scenario: Core signal processing engine in portable T1/E1 analyzers used by field technicians for installation, troubleshooting, and certification. IC Role / Device Role / Timing Role: Provides full line simulation, loopback, and error injection capabilities-acts as programmable physical layer stimulus/response unit. Use Value: Enables single-instrument validation of all T1/E1 physical layer parameters (jitter, RSLI, LOS, BER) without external signal generators or scopes. |
Use Scenario: Integrated into modular telecom multiplexers aggregating multiple T1/E1 streams onto high-speed backplanes in central office switches. IC Role / Device Role / Timing Role: Serves as H.100 CT Bus–compliant TDM interface with elastic store buffering-manages clock domain crossing between line and backplane domains. Use Value: Guarantees zero packet loss during clock slips and maintains <100ns jitter accumulation across 4× T1/E1 channels in dense backplane environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad T1/E1 framer+LIU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS3184 | Quad T1/E1 framer only-no integrated LIU; requires external line drivers and termination circuitry. | Limited to systems with existing analog front-end design; not suitable for compact CSU/DSU where space and integration are critical. | Select DS3184 only when reusing legacy LIU designs or when custom termination tuning is required beyond DS26524GNA5's software-selectable options. |
| MC2822 | Single-channel T1/E1 framer+LIU with identical feature set but no H.100 CT Bus interface or elastic store support. | Requires four separate ICs and additional glue logic to match DS26524GNA5's quad-channel density and backplane timing capability. | Choose MC2822 only for low-channel-count applications where board space is not constrained and backplane synchronization is handled externally. |
Compared with DS3184 and MC2822, DS26524GNA5 uniquely delivers full quad-channel integration-including LIU, framer, jitter attenuator, HDLC, and H.100–compliant elastic store-in a single 256-ball package, reducing component count by up to 75% and eliminating inter-IC timing skew in multi-port TDM systems.
Availability
DS26524GNA5 is available at Aetrix Electronics and suitable for channel service units (CSUs), T1/E1 test equipment, and telecom multiplexers requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for DS26524GNA5 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 communications, industrial, and computing markets.
The DS26524GNA5 belongs to Maxim's telecom framer/LIU product line, designed specifically for carrier-grade T1/E1/J1 line interface applications demanding integration, standards compliance, and field-deployable diagnostics.
FAQ
What is the operating temperature range for DS26524GNA5?
The DS26524GNA5 is rated for industrial operation from –40°C to +85°C. This temperature grade corresponds to the 'N' suffix in the part number and is validated per Maxim's thermal characterization in Section 11.1 of the datasheet. DS26524GNA5 maintains full electrical performance-including jitter attenuation accuracy and RSLI resolution-across this entire range, making it suitable for outdoor CSU deployments and central office environments.
Does DS26524GNA5 support both T1 and E1 framing simultaneously across its four ports?
Yes, DS26524GNA5 supports independent framing mode selection per port: any combination of T1 (D4/SLC-96/ESF), E1 (G.704/CRC-4), or J1 can be configured concurrently. This is enabled by dedicated framer resources per channel and verified in Section 8.9 of the datasheet. DS26524GNA5 does not require global mode locking, allowing mixed-service aggregation in a single device.
How does the crystal-less jitter attenuator in DS26524GNA5 meet ITU-T G.823 specifications?
The DS26524GNA5's crystal-less jitter attenuator uses an all-digital phase-locked loop architecture with adaptive bandwidth control, achieving input jitter transfer compliance per ITU-T G.823 Table 1 (0.5–100Hz) and output jitter generation <0.2UI p-p (1.544MHz). Performance is confirmed in Section 2.4 and Figure 8-15 of the datasheet. DS26524GNA5 requires no external crystal or VCXO, simplifying layout and reducing cost versus traditional jitter cleaners.
Can DS26524GNA5 perform T1-to-E1 protocol conversion in real time?
Yes, DS26524GNA5 includes dedicated hardware logic for real-time T1-to-E1 conversion, including frame structure mapping, bit stuffing/destuffing, and CRC-4 insertion/removal. This function is enabled per channel via register configuration (Section 8.9.3) and operates with zero latency penalty-no host processor involvement is needed. DS26524GNA5 maintains full alarm transparency and RSLI reporting across the conversion path.
What backplane interface standards does DS26524GNA5 support?
DS26524GNA5 supports H.100 (CT Bus) backplane interface with elastic store buffering, as specified in Section 8.8.3 of the datasheet. It accepts RSYNC and TSSYNCIO timing references and handles gapped clock modes for fractional rate support. DS26524GNA5 does not support PCI, PCIe, or SPI backplanes-its TDM-centric interface is optimized for time-division multiplexed switching fabrics in telecom infrastructure.
DS26524GNA5 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:
- 4
- Voltage - Supply:
- 3.135V ~ 3.465V
- Current - Supply:
- 260mA
- Power (Watts):
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 256-CSBGA (17x17)
DS26524GNA5 FAQ
1.How can I place an order for DS26524GNA5 through Aetrix?
Please submit a Request for Quotation (RFQ) for DS26524GNA5 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 DS26524GNA5 reliable?
The price and inventory of DS26524GNA5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS26524GNA5 is usually 5 days.
3.What payment methods are accepted for DS26524GNA5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS26524GNA5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS26524GNA5?
DS26524GNA5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS26524GNA5 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 DS26524GNA5?
For technical support, including DS26524GNA5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS26524GNA5 requirements.
6.How does Aetrix verify that DS26524GNA5 is sourced from the original manufacturer or authorized distributors?
All DS26524GNA5 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 DS26524GNA5 meets industry standards.
7.What is the process for return or replacement of DS26524GNA5?
All DS26524GNA5 units undergo pre-shipment inspection (PSI). If there is an issue with DS26524GNA5, 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 DS26524GNA5 part is unused and in its original packaging.
Return procedure for DS26524GNA5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DS26524GNA5 Tags
-
LMC567CMX/NOPB
Texas Instruments
-
LM567CMX/NOPB
Texas Instruments
-
LM567CM/NOPB
Texas Instruments
-
VSC8531XMW-02
Microchip Technology
-
VSC8531XMW-05
Microchip Technology
-
GPY115C0VI
MaxLinear, Inc.
-
SI32185-A-FMR
Skyworks Solutions Inc.
-
VSC8541XMV-05
Microchip Technology
-
SI32178-B-FM1R
Skyworks Solutions Inc.
-
GPY215C0VI
MaxLinear, Inc.
-
CPC7514ZTR
Littelfuse Inc.
-
VSC8502XML-03
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
