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Analog Devices Inc./Maxim Integrated MAX3885ECB-TD
- Part No.:
- MAX3885ECB-TD
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Serializers, Deserializers
- Package:
- 64-LQFP
- Datasheet:
-
MAX3885ECB-TD.pdf
- Description:
- DESERIALIZER WITH LVDS OUTPUTS
- Quantity:
- Payment:
- Shipping:
Inventory:8,250
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Product details
Overview
MAX3885ECB-TD from Maxim Integrated is a 2.488Gbps SDH/SONET deserializer that converts serial PECL data and clock inputs into 16-bit LVDS parallel outputs operating at 155Mbps, with LVDS synchronization inputs for realignment and reframing, designed for telecom transmission systems requiring precise timing and low-jitter data recovery.
For engineers reviewing the MAX3885ECB-TD datasheet, MAX3885ECB-TD pinout, MAX3885ECB-TD application, or MAX3885ECB-TD equivalent, this page delivers verified electrical parameters, confirmed TQFP-64 package mapping, functional role in SDH/SONET framing, and validated alternative parts for system-level interoperability assessment.
Technical Context
The MAX3885ECB-TD implements a 16-bit shift register clocked on the positive edge of a 2.488GHz PECL serial clock (SCLK), followed by a 4-bit counter dividing SCLK by 16 to generate a 155MHz LVDS parallel clock (PCLK). Data is latched into a 16-bit parallel output register on PCLK's negative edge.
LVDS synchronization inputs (SYNC+/SYNC−) enable deterministic bit-slip realignment within two PCLK cycles when pulsed high for ≥4 SCLK periods; PECL inputs feature self-biasing networks enabling 53Ω termination to VCC − 2V without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Serial Data Rate | 2.488Gbps - matches STM-16/OC-48 line rate for SDH/SONET compliance |
| Parallel Output Width | 16-bit - enables direct interface to 16-bit wide FPGA or ASIC parallel bus |
| Supply Voltage | +3.3V ±0.3V - single-rail operation simplifies power design vs. dual-supply alternatives |
| Power Dissipation | 660mW - measured at TA = +25°C, VCC = +3.3V, enabling thermal management in dense telecom modules |
| Operating Temperature | −40°C to +85°C - qualified for extended industrial and outdoor telecom equipment environments |
| Differential Output Swing | 250–400mV - meets IEEE 1596.3 LVDS specification for noise-immune signaling |
| Input Threshold Hysteresis | 78mV - ensures robust noise margin against jitter and crosstalk on PECL/LVDS lines |
Pinout & Package
MAX3885ECB-TD is housed in a 64-pin Thin Quad Flat Package (TQFP) with exposed pad, measuring 10mm × 10mm × 1.4mm, compliant with JEDEC MO-159 and RoHS Directive 2011/65/EU.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SD+, SD− | PECL Serial Data Differential Input | Accepts 2.488Gbps NRZ data; self-biased for AC-coupled PECL source interfacing |
| SCLK+, SCLK− | PECL Serial Clock Differential Input | Provides master timing reference; clocks internal 16-bit shift register on rising edge |
| SYNC+, SYNC− | LVDS Synchronization Differential Input | Triggers deterministic one-bit data realignment within ≤2 PCLK cycles |
| PCLK+, PCLK− | LVDS Parallel Clock Differential Output | 155MHz clock derived from SCLK/16; drives parallel output register on falling edge |
| PD0+ to PD15+ | LVDS Parallel Data Noninverting Outputs | 16-bit wide parallel data bus updated synchronously with PCLK falling edge |
| PD0− to PD15− | LVDS Parallel Data Inverting Outputs | Differential complement required for proper 100Ω termination and EMI suppression |
Key Features
| Feature | Design Value |
|---|---|
| Single +3.3V supply operation | Eliminates need for auxiliary voltage rails, reducing BOM count and PCB area in telecom line cards |
| LVDS synchronization inputs | Enables deterministic bit-slip correction without system reset or frame loss in live traffic |
| Self-biasing PECL inputs | Permits direct AC coupling to PECL sources using only 53Ω termination-no external bias network needed |
| 100Ω differential input termination on SYNC | Removes requirement for external termination resistors on sync path, improving layout simplicity and signal integrity |
| 64-pin TQFP with exposed thermal pad | Supports efficient heat dissipation at 660mW under full load, critical for fanless telecom chassis |
Applications
| STM-16 Add/Drop Multiplexer | Digital Cross-Connect System (DCS) |
|---|---|
Use Scenario: Extracting individual VC-4 tributaries from an OC-48/STM-16 aggregate stream for local switching. IC Role / Device Role / Timing Role: Deserializes incoming 2.488Gbps line-rate data into 16-bit parallel format synchronized to recovered clock and aligned via SYNC pulses. Use Value: Enables real-time, hitless reconfiguration of payload mapping without disrupting upstream SONET framing. |
Use Scenario: Interfacing between SONET line interfaces and time-slot interchange (TSI) matrices in central office switches. IC Role / Device Role / Timing Role: Converts high-speed serial transport layer data into parallel words compatible with TSI memory addressing and control logic. Use Value: Provides deterministic latency (<900ps PCLK-to-data delay) essential for strict ATM/POS cell alignment requirements. |
| SDH Regenerator Node | Optical Transport Network (OTN) Mapper Interface |
Use Scenario: Re-timing and re-shaping regenerated STM-16 signals before retransmission over fiber spans. IC Role / Device Role / Timing Role: Recovers embedded clock, deserializes data, and outputs aligned parallel stream with sub-bit-cycle jitter tolerance. Use Value: Maintains BER <10⁻¹² across cascaded nodes by preserving jitter transfer function per ITU-T G.823. |
Use Scenario: Bridging legacy SDH payloads into OTN frames (e.g., OPU2/ODU2) in multi-layer transport gateways. IC Role / Device Role / Timing Role: Provides stable 155Mbps parallel interface to mapping ASICs while supporting SYNC-driven alignment to OTN frame boundaries. Use Value: Enables seamless interworking between SDH and OTN layers without protocol conversion latency penalties. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SDH/SONET deserializer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3875ECB+ | Same 64-pin TQFP package and core deserialization architecture, but supports 1.244Gbps (STM-4/OC-12) only | Limited to lower-rate SDH/SONET tiers; lacks 2.488Gbps capability and associated jitter specs | Select only if system operates exclusively at OC-12/STM-4 and cost sensitivity outweighs future upgrade headroom |
| TI TLK2201BRCP | 2.488Gbps deserializer with identical LVDS I/O, but uses 0.18µm CMOS vs. Maxim's BiCMOS; higher ICC (≈850mA vs. 280mA) | Higher power draw limits use in thermally constrained modules; different SYNC timing behavior (asynchronous vs. synchronous realignment) | Consider only when TI's ecosystem support or qualification history aligns with OEM program requirements |
Compared with MAX3885ECB-TD, MAX3875ECB+ offers footprint compatibility but half the data rate, while TLK2201BRCP provides same-speed functionality at higher power and divergent synchronization behavior-neither is pin-compatible, and both require board-level validation for timing-critical SDH framing.
Availability
MAX3885ECB-TD is available at Aetrix Electronics and suitable for STM-16 add/drop multiplexers, digital cross-connect systems, and SDH regenerator nodes requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX3885ECB-TD 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 high-performance analog, mixed-signal, and RF ICs for communications, computing, and industrial markets.
The MAX3885ECB-TD belongs to Maxim's high-speed telecom interface product line, engineered specifically for SDH/SONET physical layer deserialization with deterministic timing, low jitter, and robust signal integrity in carrier-grade infrastructure.
FAQ
What is the maximum serial clock frequency supported by the MAX3885ECB-TD?
The MAX3885ECB-TD supports a maximum serial clock frequency of 2.488GHz, corresponding to the STM-16/OC-48 line rate. This value is guaranteed across the full operating temperature range (−40°C to +85°C) and supply voltage range (+3.0V to +3.6V), as specified in the AC Electrical Characteristics table of the official datasheet.
Does the MAX3885ECB-TD require external termination resistors on its LVDS outputs?
Yes, the MAX3885ECB-TD requires 100Ω differential termination between each LVDS output pair (e.g., PCLK+/PCLK−, PD0+/PD0−) for proper signal integrity and compliance with IEEE 1596.3. The device does not include internal termination for outputs, unlike its SYNC inputs which feature built-in 100Ω differential termination.
How does the SYNC input function in the MAX3885ECB-TD?
The SYNC+ and SYNC− inputs of the MAX3885ECB-TD accept an LVDS pulse that must be held high for at least four SCLK periods to trigger deterministic data realignment. This causes the parallel output to shift by one bit position within two complete PCLK cycles, enabling precise frame boundary adjustment without interrupting data flow.
Is the MAX3885ECB-TD pin-compatible with other devices in the MAX38xx family?
No, the MAX3885ECB-TD is not pin-compatible with other MAX38xx devices such as MAX3875ECB+. While both use 64-pin TQFP packages, their pin functions differ significantly-for example, MAX3875 lacks dedicated SYNC inputs and has different clock/data routing. Board-level redesign is required for substitution.
What is the typical supply current consumption of the MAX3885ECB-TD at +25°C?
The typical supply current for the MAX3885ECB-TD is 280mA at VCC = +3.3V and TA = +25°C, resulting in approximately 660mW of power dissipation. This value increases slightly at temperature extremes and higher supply voltages, remaining within the 1000mW absolute maximum continuous power limit for the TQFP package.
MAX3885ECB-TD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 64-LQFP
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Deserializer
- Data Rate:
- 2.488Gbps
- Input Type:
- PECL
- Output Type:
- LVDS
- Number of Inputs:
- 1
- Number of Outputs:
- 16
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-LQFP (10x10)
MAX3885ECB-TD FAQ
1.How can I place an order for MAX3885ECB-TD through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3885ECB-TD 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 MAX3885ECB-TD reliable?
The price and inventory of MAX3885ECB-TD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3885ECB-TD is usually 5 days.
3.What payment methods are accepted for MAX3885ECB-TD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3885ECB-TD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3885ECB-TD?
MAX3885ECB-TD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3885ECB-TD 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 MAX3885ECB-TD?
For technical support, including MAX3885ECB-TD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3885ECB-TD requirements.
6.How does Aetrix verify that MAX3885ECB-TD is sourced from the original manufacturer or authorized distributors?
All MAX3885ECB-TD 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 MAX3885ECB-TD meets industry standards.
7.What is the process for return or replacement of MAX3885ECB-TD?
All MAX3885ECB-TD units undergo pre-shipment inspection (PSI). If there is an issue with MAX3885ECB-TD, 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 MAX3885ECB-TD part is unused and in its original packaging.
Return procedure for MAX3885ECB-TD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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