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Analog Devices Inc./Maxim Integrated MAX9374AEKA+T
- Part No.:
- MAX9374AEKA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
MAX9374AEKA+T.pdf
- Description:
- IC TRANSLATOR UNIDIR SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,198
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Product details
Overview
MAX9374AEKA+T from Maxim Integrated is a 2.0GHz differential LVPECL-to-LVDS translator designed for high-speed telecom clock and data distribution. It delivers 250ps typical propagation delay, 1.0ps RMS jitter, and operates from a 3.0V to 3.6V supply. The device features on-chip VBB reference for single-ended input support and outputs compliant with ANSI TIA/EIA-644 LVDS standard-used in DSLAM clock repeaters and base station timing interfaces.
For engineers reviewing the MAX9374AEKA+T datasheet, MAX9374AEKA+T pinout, MAX9374AEKA+T application, or MAX9374AEKA+T equivalent, this page provides verified electrical parameters, SOT23-8 package mapping, functional pin roles, telecom-specific use cases, and validated alternative parts for signal integrity-critical LVPECL/LVDS interface design.
Technical Context
The MAX9374AEKA+T implements a bipolar process-based differential translator core optimized for 2.0GHz operation with guaranteed VOD ≥250mV. Its internal bias network (36.5kΩ pull-up + 75kΩ pull-down on D; dual 75kΩ on D) ensures differential-low output when inputs are open, eliminating floating-state uncertainty.
It supports both differential LVPECL input and single-ended operation via the VBB reference (VCC − 1.38V to VCC − 1.26V), enabling flexible integration into mixed-signal clock trees. Output termination requires 100Ω across Q/Q, and short-circuit protection is built-in for Q and Q outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Frequency | 2.0GHz guaranteed - enables direct use in OC-48/STM-16 serial clock paths without external retiming. |
| Propagation Delay | 250ps typical - minimizes skew in parallel clock distribution networks across backplanes or PCBs. |
| RMS Jitter | 1.0ps typical - preserves timing margin in high-speed data repeater applications up to 2.0Gbps. |
| Supply Voltage Range | 3.0V to 3.6V - matches nominal 3.3V system rails with ±10% tolerance, avoiding level-shifter overhead. |
| Differential Output Voltage (VOD) | 250–450mV - meets ANSI TIA/EIA-644 LVDS compliance for robust noise immunity over 100Ω loads. |
| VBB Reference Voltage | VCC − 1.38V to VCC − 1.26V - provides stable mid-rail bias for single-ended LVPECL input conversion without external components. |
| ESD Protection | 2kV HBM - protects against handling damage during board assembly and field service in telecom equipment. |
Pinout & Package
MAX9374AEKA+T is housed in an industry-standard 8-pin SOT23 package (JEDEC MO-178AA), with 1.27mm pitch, 2.8mm × 2.9mm footprint, and thermal resistance of +112°C/W (still air).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (N.C.) | No Connection | Not internally bonded - must remain unconnected; no routing or copper fill required. |
| 2 (D) | Inverted LVPECL Input | Biased with 36.5kΩ pull-up to VCC and 75kΩ pull-down to GND - ensures defined low state if left open. |
| 3 (D) | Noninverted LVPECL Input | Biased with dual 75kΩ resistors (to VCC and GND) - supports differential or single-ended mode via VBB. |
| 4 (VBB) | On-Chip Reference Output | Provides VCC − 1.32V typical bias for single-ended input configuration; bypass with 0.01µF to VCC. |
| 5 (VCC) | Positive Supply | 3.0V–3.6V rail; requires parallel 0.1µF + 0.01µF ceramic decoupling, with smaller cap nearest pin. |
| 6 (Q) | Noninverted LVDS Output | LVDS-compliant output; must be terminated with 100Ω to Q for proper common-mode and swing control. |
| 7 (Q) | Inverted LVDS Output | Differential complement to Q; termination with 100Ω across Q/Q defines VOD and common-mode voltage. |
| 8 (GND) | Ground Reference | Low-impedance return path; connect directly to solid ground plane with multiple vias to minimize inductance. |
Key Features
| Feature | Design Value |
|---|---|
| 2.0GHz guaranteed operation | Validated at full temperature range (−40°C to +85°C) with VOD ≥250mV - eliminates derating concerns in central office environments. |
| On-chip VBB reference | Eliminates need for external resistor divider or precision reference IC when converting single-ended LVPECL signals. |
| Differential-low default state | Prevents undefined output during power-up, hot-swap, or input disconnection - critical for fail-safe clock distribution. |
| ANSI TIA/EIA-644 LVDS compliance | Ensures interoperability with standard LVDS receivers (e.g., TI SN65LVDSxx, ON Semi MC100EPxx) without signal conditioning. |
| 8-pin SOT23 footprint | Enables high-density placement in space-constrained telecom modules (e.g., line cards, ONU units) while supporting reflow assembly. |
Applications
| DSLAM Clock Distribution | Base Station Timing Interface |
|---|---|
Use Scenario: Distributing 155.52MHz or 622.08MHz reference clocks across multiple line cards in a DSL access multiplexer. IC Role / Device Role / Timing Role: LVPECL-to-LVDS level translation and fanout buffering for low-skew, low-jitter clock delivery. Use Value: 250ps propagation delay and 1.0ps RMS jitter preserve setup/hold margins across 16+ downstream SERDES lanes. |
Use Scenario: Interfacing FPGA-generated LVPECL clock signals to LVDS-capable RF transceiver ICs in 4G/LTE macro base stations. IC Role / Device Role / Timing Role: Signal-level translation between incompatible logic families while maintaining phase integrity. Use Value: VBB-enabled single-ended mode allows reuse of existing FPGA GPIO pins as clock sources without redesigning I/O banks. |
| Precision Clock Buffer | Low-Jitter Data Repeater |
Use Scenario: Isolating and regenerating clock signals between analog and digital sections of high-resolution ADC/DAC subsystems. IC Role / Device Role / Timing Role: Jitter attenuation and logic-family bridging for sub-picosecond timing accuracy requirements. Use Value: 2.0GHz bandwidth supports harmonics up to 5th order, preserving edge fidelity in <100ps rise-time systems. |
Use Scenario: Retiming and translating 1.25Gbps Ethernet data streams between LVPECL PHYs and LVDS switch fabric interfaces. IC Role / Device Role / Timing Role: Transparent data path translation with deterministic delay and minimal added jitter. Use Value: 45–75ps peak-to-peak deterministic jitter ensures BER <1e−12 under worst-case channel loss conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LVPECL-to-LVDS translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9374EKA+T | 2.375V–2.625V supply range; identical pinout and AC specs but lower VCC range. | Targeted for 2.5V systems (e.g., legacy SONET framer ASICs); not suitable for 3.3V-only designs. | Select MAX9374EKA+T only when operating from 2.5V rails and full 3.3V compatibility is unnecessary. |
| SN65LVDS32DR | LVDS-to-LVDS repeater (not LVPECL input); 2.5V–3.3V supply; no VBB or internal biasing. | Requires external LVPECL-to-LVDS front-end stage; adds component count and board area. | Choose only if existing design already includes LVDS input conditioning and absolute pin compatibility is secondary. |
Compared with MAX9374AEKA+T, MAX9374EKA+T offers identical performance in 2.5V systems but lacks 3.3V operation, while SN65LVDS32DR requires external signal conditioning and cannot accept LVPECL inputs directly-making MAX9374AEKA+T the sole drop-in solution for 3.3V LVPECL-to-LVDS translation.
Availability
MAX9374AEKA+T is available at Aetrix Electronics and suitable for DSLAM clock distribution, base station timing interfaces, and precision clock buffer applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX9374AEKA+T 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, computing, and industrial markets.
The MAX9374/MAX9374A product line was engineered specifically for high-frequency telecom clock translation-addressing jitter, skew, and voltage-domain bridging challenges in DSLAM, central office, and wireless infrastructure equipment.
FAQ
What is the maximum operating frequency supported by MAX9374AEKA+T?
The MAX9374AEKA+T is guaranteed to operate at 2.0GHz across the full temperature range (−40°C to +85°C), with VOD maintained ≥250mV. Typical performance reaches 2.2GHz, but system-level validation at 2.0GHz ensures reliable operation in OC-48/STM-16 clock distribution paths where the MAX9374AEKA+T is commonly deployed.
Does MAX9374AEKA+T support single-ended LVPECL input signals?
Yes, the MAX9374AEKA+T supports single-ended LVPECL input via its on-chip VBB reference output (pin 4). Connecting VBB to either D or D enables conversion of a single-ended signal applied to the complementary input, eliminating the need for external bias networks - a key capability confirmed in the MAX9374AEKA+T datasheet's Single-Ended Inputs section.
What is the purpose of the N.C. pin (pin 1) on MAX9374AEKA+T?
Pin 1 of the MAX9374AEKA+T is a true no-connect terminal - it is not bonded internally and serves no electrical function. The MAX9374AEKA+T datasheet explicitly states "No Connection. Not internally connected." Leaving it unconnected is mandatory; routing or grounding pin 1 may cause mechanical stress or unintended coupling in high-frequency layouts.
How should the outputs of MAX9374AEKA+T be terminated?
The MAX9374AEKA+T requires 100Ω differential termination across Q and Q pins, as specified in the Typical Application Circuit and Applications Information sections. This termination establishes the correct common-mode voltage (~1.2V) and differential swing (250–450mV), ensuring ANSI TIA/EIA-644 LVDS compliance - failure to terminate both outputs degrades VOD and increases jitter in the MAX9374AEKA+T.
Is MAX9374AEKA+T compatible with 2.5V supply systems?
No, MAX9374AEKA+T is rated exclusively for 3.0V to 3.6V operation and is not compatible with 2.5V systems. The MAX9374EKA+T variant is the designated 2.375V–2.625V version; using MAX9374AEKA+T below 3.0V violates Absolute Maximum Ratings and results in undefined behavior, including failure to meet 2.0GHz operation or LVDS output specifications - per the MAX9374AEKA+T Ordering Information table.
MAX9374AEKA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Translator Type:
- Mixed Signal
- Channel Type:
- Unidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 1
- Voltage - VCCA:
- -
- Voltage - VCCB:
- -
- Input Signal:
- LVPECL
- Output Signal:
- LVDS
- Output Type:
- Differential
- Data Rate:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8
MAX9374AEKA+T FAQ
1.How can I place an order for MAX9374AEKA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9374AEKA+T 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 MAX9374AEKA+T reliable?
The price and inventory of MAX9374AEKA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9374AEKA+T is usually 5 days.
3.What payment methods are accepted for MAX9374AEKA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9374AEKA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9374AEKA+T?
MAX9374AEKA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9374AEKA+T 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 MAX9374AEKA+T?
For technical support, including MAX9374AEKA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9374AEKA+T requirements.
6.How does Aetrix verify that MAX9374AEKA+T is sourced from the original manufacturer or authorized distributors?
All MAX9374AEKA+T 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 MAX9374AEKA+T meets industry standards.
7.What is the process for return or replacement of MAX9374AEKA+T?
All MAX9374AEKA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9374AEKA+T, 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 MAX9374AEKA+T part is unused and in its original packaging.
Return procedure for MAX9374AEKA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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