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Analog Devices Inc./Maxim Integrated MAX3885ECB-D
- Part No.:
- MAX3885ECB-D
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Serializers, Deserializers
- Package:
- 64-LQFP
- Datasheet:
-
MAX3885ECB-D.pdf
- Description:
- DESERIALIZER WITH LVDS OUTPUTS
- Quantity:
- Payment:
- Shipping:
Inventory:2,001
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Product details
Overview
The MAX3885ECB-D from Maxim Integrated is a 2.488Gbps SDH/SONET deserializer that converts serial PECL data and clock inputs into 16-bit LVDS parallel outputs at 155Mbps, operating from a single +3.3V supply with 660mW power dissipation in -40°C to +85°C industrial temperature range.
For engineers reviewing the MAX3885ECB-D datasheet, MAX3885ECB-D pinout, MAX3885ECB-D application, or MAX3885ECB-D equivalent, this page delivers verified electrical parameters, LVDS/PECL interface behavior, synchronization timing, thermal performance, and real-world SDH/SONET system integration guidance.
Technical Context
The MAX3885ECB-D implements a 16-bit shift register clocked on the positive edge of SCLK, a 4-bit counter dividing SCLK by 16 to generate PCLK, and a parallel output register updated on the negative edge of PCLK - enabling deterministic 1:16 serial-to-parallel conversion. It supports realignment via LVDS SYNC+/- pulses requiring ≥4 SCLK cycles.
Its self-biasing PECL inputs (SD+/SD-, SCLK+/SCLK-) require 53Ω termination to VCC–2V, while LVDS outputs (PD0±–PD15±, PCLK±) demand 100Ω differential termination; SYNC± inputs are internally terminated at 100Ω differential resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Serial Data Rate | 2.488Gbps - matches STM-16/OC-48 line rate for SDH/SONET transmission systems |
| Parallel Output Width | 16-bit LVDS - delivers full byte-aligned frame data for downstream FPGA or ASIC processing |
| Supply Voltage | +3.3V ±0.3V - compatible with standard logic rails; no dual-supply sequencing required |
| Power Dissipation | 660mW at TA = +25°C - enables thermal design within 64-pin TQFP package limits at full speed |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade telecom infrastructure deployment |
| Differential Output Swing | 250–400mVpp - meets IEEE 1596.3 LVDS specification for noise-immune high-speed interconnect |
| Input Threshold Hysteresis | 78mV - ensures robust PECL input sampling under jitter and voltage variation |
Pinout & Package
The MAX3885ECB-D is housed in a 64-pin Thin Quad Flat Package (TQFP), measuring 10mm × 10mm × 1.4mm, with exposed thermal pad and standard 0.5mm pitch. Pin 1 is located at top-left corner per JEDEC MO-153.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SD+, SD- | Serial Data Differential PECL Input | Accepts 2.488Gbps NRZ data; self-biased for AC-coupled PECL source interfacing |
| SCLK+, SCLK- | Serial Clock Differential PECL Input | Provides bit-rate timing reference; clocks internal 16-bit shift register on rising edge |
| SYNC+, SYNC- | LVDS Synchronization Input | Triggers one-bit data realignment and reframing when pulsed ≥4 SCLK cycles |
| PCLK+, PCLK- | LVDS Parallel Clock Output | 155MHz clock derived from SCLK/16; updates parallel outputs on falling edge |
| PD0+ to PD15+ | LVDS Parallel Data Outputs | 16-bit wide parallel bus; each pair delivers synchronized data aligned to PCLK falling edge |
| VCC (Pins 3,5,7,9,11,13,25,34,42,47,56) | +3.3V Supply | 11 dedicated power pins minimize IR drop and improve high-frequency decoupling |
| GND (Pins 1,2,8,16,17,24,32,33,41,48,49,57,64) | Ground | 13 ground pins provide low-inductance return paths for PECL and LVDS I/O |
Key Features
| Feature | Design Value |
|---|---|
| LVDS synchronization inputs | Enable deterministic bit-slip realignment without resetting the deserializer or disrupting ongoing data flow |
| Self-biasing PECL inputs | Eliminate need for external bias networks, simplifying AC-coupled interface to legacy PECL transmitters |
| Integrated 4-bit counter and parallel register | Provide fully synchronous 1:16 deserialization with zero-latency PCLK generation from SCLK |
| 100Ω differential LVDS termination support | Ensures signal integrity on PCB traces up to 15cm at 155MHz with controlled impedance routing |
| Industrial temperature qualification | Validated operation across -40°C to +85°C ambient, meeting NEBS Level 3 requirements for telecom hardware |
Applications
| SDH/SONET Add/Drop Multiplexer | Digital Cross-Connect System (DCS) |
|---|---|
Use Scenario: Extracting individual VC-4 or STS-1 channels from an OC-48 line for local service insertion or grooming. IC Role / Device Role / Timing Role: Deserializes incoming 2.488Gbps line data into 16-bit parallel format synchronized to recovered clock and alignment signals. Use Value: Enables channelized processing in FPGA-based switch fabric with precise bit alignment control via SYNC inputs. | Use Scenario: Reconfiguring time-slot assignments across multiple SONET rings in metro core nodes. IC Role / Device Role / Timing Role: Converts high-speed serial tributary streams into parallel data for time-slot interchange (TSI) memory access. Use Value: Provides deterministic latency and sub-bit realignment capability essential for hitless reconfiguration. |
| STM-16 Line Card Interface | Optical Transport Network (OTN) Mapper |
Use Scenario: Interfacing optical receiver modules to backplane ASICs in carrier-grade line cards. IC Role / Device Role / Timing Role: Bridges PECL-based optical PHY outputs to LVDS-compatible logic fabric with minimal jitter accumulation. Use Value: Reduces board-level signal integrity risk through standardized LVDS drive strength and common-mode rejection. | Use Scenario: Mapping SDH frames into OTU2 containers for wavelength-division multiplexing transport. IC Role / Device Role / Timing Role: Supplies aligned 16-bit parallel data and PCLK to mapping logic, preserving frame boundary integrity. Use Value: Supports seamless frame alignment via SYNC-triggered reframing during OPUk overhead insertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar deserializer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3875ECB-D | Same 64-pin TQFP package and +3.3V supply, but supports only 1.244Gbps (STM-8/OC-24); lower power (420mW) | Targeted for mid-tier SDH/SONET equipment where half-rate bandwidth suffices | Select MAX3875ECB-D when cost-sensitive designs operate below 2.488Gbps and thermal budget is constrained |
| ICS843001AGLFT | LVDS-only interface (no PECL inputs); supports 2.5Gbps but requires external clock recovery; 48-pin QFN | Used in newer FPGA-centric platforms where clock recovery is handled upstream | Choose ICS843001AGLFT when integrating with SerDes-capable FPGAs and eliminating separate clock recovery ICs |
Compared with MAX3875ECB-D and ICS843001AGLFT, the MAX3885ECB-D uniquely combines native 2.488Gbps PECL input compatibility, integrated SYNC-controlled realignment, and industrial temperature rating in a single 64-pin TQFP - making it the only option for legacy SDH/SONET line card upgrades requiring bit-level framing control.
Availability
MAX3885ECB-D is available at Aetrix Electronics and suitable for SDH/SONET transmission systems, add/drop multiplexers, and digital cross-connects requiring stable component supply, long-term lifecycle assurance, and guaranteed lead-free compliance.
Supply support for MAX3885ECB-D 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 RF solutions for communications, computing, and industrial markets.
The MAX3885ECB-D belongs to Maxim's high-speed communication interface product line, designed specifically for SDH/SONET physical layer bridging between optical receivers and digital switching fabric.
FAQ
What is the maximum serial clock frequency supported by the MAX3885ECB-D?
The MAX3885ECB-D supports a maximum serial clock frequency of 2.488GHz, corresponding to STM-16/OC-48 line rate. This value is guaranteed over the full -40°C to +85°C operating temperature range with VCC between +3.0V and +3.6V. The device maintains timing margins even at temperature extremes, as confirmed by Figure 4 in the official datasheet.
Does the MAX3885ECB-D require external termination for its LVDS outputs?
Yes, the MAX3885ECB-D LVDS outputs (PCLK± and PD0±–PD15±) require external 100Ω differential termination between complementary pins. Unlike SYNC± inputs - which feature internal 100Ω differential termination - the outputs must be terminated at the receiving end to maintain signal integrity and meet IEEE 1596.3 LVDS specifications.
How does the SYNC input function in the MAX3885ECB-D?
The SYNC+ and SYNC- inputs of the MAX3885ECB-D trigger deterministic data realignment: pulsing SYNC high for at least four SCLK periods causes the parallel output to shift by one bit position within two PCLK cycles. This reframing occurs without reset or loss of lock, preserving continuous data flow - critical for hitless SDH/SONET network reconfiguration.
What is the power consumption of the MAX3885ECB-D under typical operating conditions?
The MAX3885ECB-D draws 200mA to 280mA supply current (ICC), resulting in 660mW typical power dissipation at +3.3V and +25°C. Power scales linearly with supply voltage and increases modestly with temperature, remaining within 1000mW absolute maximum at +85°C as specified in the TQFP derating curve.
Is the MAX3885ECB-D pin-compatible with other devices in the MAX38xx family?
No, the MAX3885ECB-D is not pin-compatible with earlier MAX3875ECB-D or MAX3865 variants. Although all use 64-pin TQFP packages, pin functions differ significantly - particularly for SYNC, PCLK, and PDx assignments - requiring PCB layout changes. Always verify pin mapping against the specific device's pin configuration diagram before substitution.
MAX3885ECB-D 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-D FAQ
1.How can I place an order for MAX3885ECB-D through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3885ECB-D 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-D reliable?
The price and inventory of MAX3885ECB-D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3885ECB-D is usually 5 days.
3.What payment methods are accepted for MAX3885ECB-D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3885ECB-D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3885ECB-D?
MAX3885ECB-D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3885ECB-D 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-D?
For technical support, including MAX3885ECB-D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3885ECB-D requirements.
6.How does Aetrix verify that MAX3885ECB-D is sourced from the original manufacturer or authorized distributors?
All MAX3885ECB-D 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-D meets industry standards.
7.What is the process for return or replacement of MAX3885ECB-D?
All MAX3885ECB-D units undergo pre-shipment inspection (PSI). If there is an issue with MAX3885ECB-D, 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-D part is unused and in its original packaging.
Return procedure for MAX3885ECB-D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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