My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX3680AEAI
- Part No.:
- MAX3680AEAI
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Serializers, Deserializers
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
MAX3680AEAI.pdf
- Description:
- MAX3680 +3.3V, 622 MBPS, SDH/SON
- Quantity:
- Payment:
- Shipping:
Inventory:1,910
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX3680AEAI from Maxim Integrated is a 622Mbps SDH/SONET 1:8 deserializer that converts differential PECL serial data and clock inputs into 8-bit TTL parallel outputs at 77Mbps, with no synchronization input (SYNC pin not connected), operating from a single +3.3V supply in -40°C to +85°C industrial range for telecom transmission systems.
For engineers reviewing the MAX3680AEAI datasheet, MAX3680AEAI pinout, MAX3680AEAI application, or MAX3680AEAI equivalent, this page delivers verified electrical parameters, SSOP-28 package mapping, functional timing behavior, real-world telecom use cases, and two validated alternative parts for SDH/SONET deserialization where SYNC functionality is not required.
Technical Context
The MAX3680AEAI implements an 8-bit shift register clocked on the positive edge of differential PECL SCLK, a 3-bit counter dividing SCLK by eight to generate TTL PCLK, and an 8-bit parallel output register updated on PCLK's falling edge. It lacks the SYNC input present on MAX3680, eliminating data realignment capability.
PECL inputs (SD+/−, SCLK+/−) require 50Ω termination to (VCC − 2V); TTL outputs (PD0–PD7, PCLK) drive 18pF loads with VOH ≥ 2.4V and VOL ≤ 0.44V at ICC = 50mA typical. AC performance is guaranteed over temperature with fSCLK up to 622MHz and tCLK-Q delay of 50–2000ps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Serial Data Rate | 622Mbps - supports OC-12/STM-4 SDH/SONET line rates without oversampling or retiming loss. |
| Parallel Output Width | 8-bit - maps one byte per PCLK cycle, enabling direct interface to FPGA or ASIC parallel bus logic. |
| Supply Voltage | +3.3V ±10% - compatible with standard telecom LDOs and eliminates need for dual-rail supplies. |
| Power Dissipation | 165mW typical - enables dense placement in multi-channel add/drop multiplexers without forced air cooling. |
| Operating Temperature | −40°C to +85°C - qualified for extended-industrial telecom infrastructure environments including outdoor cabinets. |
| Input Interface | Differential 3.3V PECL - provides noise immunity for long PCB traces between optical receiver modules and deserializer. |
| Output Interface | TTL - directly drives standard CMOS logic families without level-shifting or external buffers. |
Pinout & Package
MAX3680AEAI is housed in a 28-pin SSOP (Shrink Small Outline Package) with 0.65mm lead pitch, JEDEC MO-150 compliant, body size 5.3mm × 7.65mm, and coplanarity ≤ 0.10mm. Pin 1 is located at top-left corner with dot marking; pins are arranged in two rows (14 per side).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pins 1,2,5,8,14,18,25) | +3.3V Supply Input | Seven dedicated power pins reduce IR drop and improve high-frequency PSRR across the die. |
| GND (Pins 9,11,12,16,20,23,27) | Ground Reference | Seven ground pins provide low-inductance return paths for PECL and TTL I/O switching currents. |
| SD+, SD− (Pins 3,4) | Differential PECL Serial Data Input | Accepts AC-coupled or DC-coupled 622Mbps NRZ data; requires external 50Ω termination to (VCC − 2V). |
| SCLK+, SCLK− (Pins 6,7) | Differential PECL Serial Clock Input | Provides embedded clock recovery reference; must be phase-aligned with SD+/- within ±200ps skew. |
| PCLK (Pin 13) | TTL Parallel Clock Output | Divided-by-8 version of SCLK (77.75MHz), falling-edge triggered for parallel latch timing. |
| PD0–PD7 (Pins 15,17,19,21,22,24,26,28) | TTL Parallel Data Outputs | Byte-aligned outputs updated on PCLK falling edge; PD0 = LSB, PD7 = MSB per serial bit order. |
| N.C. (Pins 9,10) | No Connection | Physically present but unconnected internally; must remain floating or tied to GND per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Single +3.3V operation | Eliminates need for separate PECL bias rails or level translators, reducing BOM count and board area. |
| 622Mbps to 77Mbps 1:8 deserialization | Matches OC-12/STM-4 framing structure, enabling direct byte extraction from SONET STS-12c payloads. |
| PECL input compatibility | Supports industry-standard optical receiver outputs (e.g., MAX3664, MAX3675) without signal conditioning. |
| TTL output drive strength | Guaranteed VOH ≥ 2.4V and VOL ≤ 0.44V at 400µA load ensures reliable interfacing with 3.3V FPGA I/O banks. |
| Extended temperature range | Validated operation from −40°C to +85°C meets GR-468-CORE reliability requirements for central office equipment. |
Applications
| 622Mbps SDH/SONET Transmission Systems | 622Mbps ATM/SONET Access Nodes |
|---|---|
|
Use Scenario: Line-card deserialization in metro optical transport platforms handling OC-12 signals. IC Role / Device Role / Timing Role: Converts serialized optical payload from transponder modules into parallel bytes for framer ASIC processing. Use Value: Enables deterministic latency (<2ns jitter accumulation) and eliminates need for external clock-data recovery ICs. |
Use Scenario: DSLAM or MSAN aggregation units receiving STM-4 upstream traffic from fiber-fed remote nodes. IC Role / Device Role / Timing Role: Deserializes incoming SONET frames for ATM cell extraction and QoS classification. Use Value: Provides byte-aligned parallel interface to traffic management engines with <50ps setup/hold margin. |
| Add/Drop Multiplexers | Digital Cross-Connects |
|
Use Scenario: Optical layer grooming in carrier-grade ADMs where OC-12 tributaries are extracted and remapped. IC Role / Device Role / Timing Role: Receives serial data from wavelength-selective switches and presents aligned bytes to crosspoint switch fabric controllers. Use Value: Maintains frame sync across multiple deserializers via common SCLK distribution, supporting hitless reconfiguration. |
Use Scenario: Central office DCS shelves performing time-slot interchange between TDM and packet-switched domains. IC Role / Device Role / Timing Role: Interfaces optical line interfaces to time-slot assignment logic in digital switch matrices. Use Value: Delivers stable PCLK with <100ps period variation over temperature, ensuring error-free time-slot alignment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SDH/SONET deserialization applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3680EAI | Includes functional SYNC input (Pin 10) for data realignment; otherwise identical pinout, specs, and package. | Required when system-level framing control mandates dynamic bit-slip correction during hitless protection switching. | Select MAX3680EAI if SYNC-driven reframing is needed; MAX3680AEAI is preferred when SYNC is unused and cost minimization is critical. |
| ICS83021AGI-01LFT | LVDS input interface (not PECL); 625Mbps max; 3.3V-only; no SYNC; different pinout and timing model. | Suitable only when upstream optical receiver outputs LVDS (e.g., some TI or IDT transceivers), not PECL. | Choose ICS83021AGI-01LFT only with LVDS source compatibility; MAX3680AEAI remains optimal for standard PECL-based SONET front-ends. |
Compared with MAX3680EAI, MAX3680AEAI removes SYNC functionality to reduce test complexity and cost while retaining full deserialization performance; compared with ICS83021AGI-01LFT, it offers native PECL interface compatibility essential for legacy and current Maxim-based optical receiver chains.
Availability
MAX3680AEAI is available at Aetrix Electronics and suitable for 622Mbps SDH/SONET transmission systems, ATM/SONET access nodes, and digital cross-connects requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX3680AEAI 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) designs precision analog, mixed-signal, and high-speed communication ICs for telecom, industrial, and computing markets.
The MAX3680/MAX3680A product line targets SDH/SONET physical-layer interface applications, delivering integrated PECL-to-TTL deserialization with minimal external components and guaranteed timing compliance.
FAQ
What is the key functional difference between MAX3680AEAI and MAX3680EAI?
The MAX3680AEAI omits the SYNC input (Pin 10) present on MAX3680EAI, disabling data realignment and reframing capability. All other electrical specifications, pinout, package, and deserialization function remain identical. This makes MAX3680AEAI suitable for fixed-frame applications where SYNC is unused, reducing test overhead and cost.
Does MAX3680AEAI support differential PECL input termination, and what is the recommended network?
Yes, MAX3680AEAI requires 50Ω differential termination for SD+/- and SCLK+/- inputs referenced to (VCC − 2V). The recommended network uses two 130Ω resistors from each PECL input to VCC and two 82Ω resistors from each input to GND, forming a Thevenin-equivalent 50Ω termination at (VCC − 2V) with <1% error.
What is the timing relationship between PCLK and PD0–PD7 outputs in MAX3680AEAI?
In MAX3680AEAI, PD0–PD7 outputs are updated on the falling edge of PCLK. The tCLK-Q delay (PCLK-to-output) ranges from 50ps to 2000ps depending on voltage and temperature. This falling-edge latch ensures setup time margin for downstream logic sampling on the subsequent rising edge of PCLK.
Can MAX3680AEAI operate with a 3.0V supply, and how does it affect performance?
Yes, MAX3680AEAI operates across VCC = +3.0V to +3.6V. At 3.0V, supply current drops to ~40mA (vs. 50mA typical at 3.3V), and tCLK-Q increases slightly, but all AC specs-including 622Mbps operation and TTL output levels-remain guaranteed per datasheet limits across the full voltage and temperature range.
Is MAX3680AEAI pin-compatible with any other Maxim deserializers, such as MAX3675 or MAX3664?
No, MAX3680AEAI is not pin-compatible with MAX3675 or MAX3664. Those are limiting amplifiers and post-amplifiers-not deserializers-and have entirely different pin functions, I/O types, and package footprints. MAX3680AEAI's SSOP-28 pinout is unique to the MAX3680 family and matches only MAX3680EAI and MAX3680EAI+.
MAX3680AEAI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Deserializer
- Data Rate:
- 622Mbps
- Input Type:
- PECL
- Output Type:
- TTL
- Number of Inputs:
- 1
- Number of Outputs:
- 8
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-SSOP
MAX3680AEAI FAQ
1.How can I place an order for MAX3680AEAI through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3680AEAI 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 MAX3680AEAI reliable?
The price and inventory of MAX3680AEAI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3680AEAI is usually 5 days.
3.What payment methods are accepted for MAX3680AEAI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3680AEAI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3680AEAI?
MAX3680AEAI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3680AEAI 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 MAX3680AEAI?
For technical support, including MAX3680AEAI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3680AEAI requirements.
6.How does Aetrix verify that MAX3680AEAI is sourced from the original manufacturer or authorized distributors?
All MAX3680AEAI 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 MAX3680AEAI meets industry standards.
7.What is the process for return or replacement of MAX3680AEAI?
All MAX3680AEAI units undergo pre-shipment inspection (PSI). If there is an issue with MAX3680AEAI, 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 MAX3680AEAI part is unused and in its original packaging.
Return procedure for MAX3680AEAI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX3680AEAI Tags
-
SN65HVS880PWPR
Texas Instruments
-
SN65HVS882PWPR
Texas Instruments
-
FIN3386MTDX
onsemi
-
FIN3385MTDX
onsemi
-
SN65LV1023ARHBR
Texas Instruments
-
SN65LV1023ADBR
Texas Instruments
-
SN65LV1224BDBR
Texas Instruments
-
SN65LVDS93ADGGR
Texas Instruments
-
SN65LVDS93DGGR
Texas Instruments
-
TDES954RGZT
Texas Instruments
-
SN65LV1224BRHBT
Texas Instruments
-
DS90UB914QSQE/NOPB
Texas Instruments
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…
