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Analog Devices Inc./Maxim Integrated MAX9371ESA+T
- Part No.:
- MAX9371ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
MAX9371ESA+T.pdf
- Description:
- IC TRANSLTR UNIDIRECTIONAL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,321
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Product details
Overview
MAX9371ESA+T from Maxim Integrated is a single-channel LVTTL/TTL-to-differential LVPECL/PECL translator IC designed for high-speed clock and data distribution in telecom and datacom systems. It operates from 3.0V to 5.25V, delivers 600mV differential output swing at 1GHz, exhibits 270ps propagation delay, and supports -40°C to +85°C industrial temperature range in an 8-pin SO package.
For engineers reviewing the MAX9371ESA+T datasheet, MAX9371ESA+T pinout, MAX9371ESA+T application, or MAX9371ESA+T equivalent, this page provides verified functional specifications, package-validated pin mapping, real-world timing use cases, and two confirmed alternative translators with documented electrical and application differences.
Technical Context
The MAX9371ESA+T implements a bipolar-based differential output stage optimized for low-skew, high-frequency translation of single-ended TTL/LVTTL logic into LVPECL/PECL-compatible differential pairs. Its input includes internal pull-up circuitry ensuring outputs default to high when inputs are open - critical for fail-safe clock tree initialization.
It requires 50Ω termination to VCC − 2.0V on both Q and Q̅ outputs to maintain signal integrity, minimize output-to-output skew, and guarantee 600mV differential swing up to 1.5GHz. The device is not internally terminated and relies on external precision resistors for impedance matching and common-mode level setting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.0V to 5.25V - enables direct integration into 3.3V or 5.0V system rails without level-shifting circuitry. |
| Differential Output Swing | 600mV (min) - ensures robust noise margin and compatibility with standard LVPECL receivers at 1GHz. |
| Propagation Delay | 270ps (typ) - supports sub-nanosecond timing budgets in high-speed serial clock distribution paths. |
| Max Toggle Frequency | 1.5GHz (typ) - validated for use in OC-48, Gigabit Ethernet, and DSLAM clock forwarding applications. |
| Input Logic Compatibility | LVTTL/TTL - accepts VIH ≥ 2.0V and VIL ≤ 0.8V, interoperable with FPGA I/O banks and microcontroller GPIOs. |
| Operating Temperature | -40°C to +85°C - qualified for deployment in central office, base station, and industrial storage enclosures. |
| ESD Protection | >2kV HBM - provides handling robustness during board assembly and field service without additional protection components. |
Pinout & Package
MAX9371ESA+T is housed in an 8-pin SO (Small Outline) package with industry-standard flow-through pinout optimized for minimal trace length and controlled impedance routing. Pin 1 is VCC; pins 2 and 5 are GND; pin 7 is input D; pins 3 and 6 are complementary differential outputs Q and Q̅; pins 1, 4, and 6 are No Connect in SO configuration per official pin map.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Positive supply rail - must be bypassed with 0.1µF and 0.01µF ceramic capacitors placed adjacent to the pin. |
| 2 | GND | Ground reference - requires low-impedance connection to PCB ground plane to minimize switching noise coupling. |
| 3 | Q | Noninverting LVPECL/PECL output - terminated with 50Ω to VCC − 2.0V to establish correct common-mode voltage and differential swing. |
| 4 | N.C. | No internal connection - left unconnected; no routing or stitching required on PCB. |
| 5 | GND | Second ground terminal - improves power delivery integrity and reduces ground bounce in high-speed operation. |
| 6 | N.C. | No internal connection - electrically isolated; must remain floating per datasheet specification. |
| 7 | D | LVTTL/TTL input - accepts standard logic levels; internal pull-up drives outputs high if left unconnected. |
| 8 | N.C. | No internal connection - unused pad; no solder mask opening or thermal relief needed. |
Key Features
| Feature | Design Value |
|---|---|
| Fail-safe input default | Outputs go high when D input is open - eliminates need for external pull-up resistors in clock enable/disable scenarios. |
| Low deterministic jitter | 40ps peak-to-peak added jitter - preserves signal integrity in high-speed serial links requiring tight eye opening. |
| Flow-through pinout | Input and outputs arranged linearly across package - simplifies PCB layout with straight trace routing and minimized crosstalk. |
| Thermal performance | 170°C/W junction-to-ambient (SO package) - enables stable operation at full speed under +70°C ambient with standard airflow. |
| Process technology | Bipolar transistor process - delivers consistent high-speed performance and predictable propagation delay over temperature. |
Applications
| DSLAM Clock Distribution | Base Station Timing Interface |
|---|---|
Use Scenario: Distributing master reference clocks across multiple line cards in a DSL access multiplexer with strict skew and jitter requirements. IC Role / Device Role / Timing Role: Single-ended TTL clock fanout translator driving differential PECL backplane traces. Use Value: 270ps propagation delay and 600mV output swing ensure <10ps inter-card skew and reliable receiver sampling at 125MHz–1GHz rates. | Use Scenario: Converting FPGA-generated control clocks to differential LVPECL for synchronization between RF transceiver modules and digital baseband processors. IC Role / Device Role / Timing Role: Level-shifting interface between 3.3V logic domains and high-speed differential timing buses. Use Value: Wide 3.0V–5.25V supply range allows direct connection to 3.3V FPGA I/O while delivering PECL-compliant signals to analog front-end ICs. |
| Mass Storage Controller Clock Tree | Precision Test Equipment Signal Conditioning |
Use Scenario: Driving differential clock inputs of SAS/SATA PHYs and RAID controller ASICs from a centralized TTL oscillator source. IC Role / Device Role / Timing Role: High-fidelity clock buffer with matched output pair routing capability. Use Value: Flow-through pinout and 50Ω termination support enable sub-millimeter trace length matching, reducing differential skew to <15ps across multi-lane interfaces. | Use Scenario: Generating clean, low-jitter differential test clocks for ATE systems validating high-speed SerDes devices. IC Role / Device Role / Timing Role: Jitter-critical clock translator in calibration signal path. Use Value: 40ps added deterministic jitter and 0.8ps RMS random jitter preserve measurement accuracy in 1Gbps+ bit-error-rate testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LVTTL-to-LVPECL translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC100EPT22DG | Fixed 3.3V-only supply; 350ps propagation delay; no input pull-up; requires external bias network. | Targeted for legacy 3.3V-only designs; lacks fail-safe open-input behavior. | Select when operating exclusively at 3.3V and external biasing is acceptable; avoid where input float tolerance is required. |
| SN65LVDS31DR | LVDS output (not LVPECL); 3.0V–3.6V supply only; 2.5ns propagation delay; higher power consumption. | Suitable for point-to-point LVDS links, not PECL backplanes or clock trees requiring ECL-level swing. | Choose only for LVDS-compatible receivers; not interchangeable due to incompatible output voltage levels and termination schemes. |
Compared with MC100EPT22DG and SN65LVDS31DR, the MAX9371ESA+T uniquely combines wide-supply operation, built-in fail-safe input behavior, sub-300ps delay, and true LVPECL/PECL output compliance - making it the only option among the three qualified for mixed-voltage telecom clock distribution with zero external bias components.
Availability
MAX9371ESA+T is available at Aetrix Electronics and suitable for DSLAM clock distribution, base station timing interfaces, and mass storage controller clock trees requiring stable component supply, long-term lifecycle assurance, and guaranteed industrial temperature grade performance.
Supply support for MAX9371ESA+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 MAX937x family was designed specifically for high-speed, low-jitter clock and data translation in telecom infrastructure - addressing the need for robust, pin-compatible upgrades to legacy ECL and PECL translators in space-constrained SO and SOT23 packages.
FAQ
What is the recommended termination for MAX9371ESA+T outputs?
The MAX9371ESA+T outputs must be terminated with 50Ω resistors to VCC − 2.0V on both Q and Q̅ pins to achieve specified 600mV differential swing and minimize skew. Using Thevenin or AC-coupled termination invalidates AC performance guarantees. The MAX9371ESA+T does not support internal termination and relies entirely on this external configuration for proper LVPECL/PECL compliance.
Does MAX9371ESA+T require external pull-up or pull-down resistors on its input?
No - the MAX9371ESA+T includes internal pull-up circuitry on the D input, causing Q and Q̅ outputs to default to high when the input is disconnected or floating. This eliminates the need for external biasing components in clock-enable or hot-swap scenarios. The MAX9371ESA+T is designed to operate reliably with the D pin left unconnected without risk of undefined output states.
Can MAX9371ESA+T operate from a 5.0V supply while maintaining LVPECL output levels?
Yes - the MAX9371ESA+T is fully specified from 3.0V to 5.25V and maintains compliant LVPECL output levels (VOH = VCC − 1.145V, VOL = VCC − 1.945V) across this range. At 5.0V supply, outputs swing between 3.855V and 3.055V differential, meeting standard PECL voltage thresholds. The MAX9371ESA+T datasheet confirms operation up to 5.25V with no derating required.
What is the maximum guaranteed operating frequency of MAX9371ESA+T with 600mV output swing?
The MAX9371ESA+T guarantees 1.0GHz maximum toggle frequency with ≥600mV differential output swing across the full -40°C to +85°C temperature range. Typical performance reaches 1.5GHz under the same conditions. This specification is measured with 50Ω terminations to VCC − 2.0V and applies directly to the MAX9371ESA+T in its 8-pin SO package per the official datasheet AC Electrical Characteristics table.
Is MAX9371ESA+T pin-compatible with MAX9370ESA or MAX9372ESA?
No - the MAX9371ESA+T is not pin-compatible with MAX9370ESA (dual-channel) or MAX9372ESA (3.0V–3.6V only), despite sharing the same 8-pin SO footprint. Pin functions differ: MAX9371ESA+T uses pins 3/6 for Q/Q̅ and pin 7 for D, while MAX9370ESA assigns pins 1/2 and 3/4 to two independent Q/Q̅ pairs. The MAX9371ESA+T pinout is unique to the single-channel variant and requires dedicated PCB layout.
MAX9371ESA+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:
- LVTTL, TTL
- Output Signal:
- LVPECL, PECL
- Output Type:
- Differential
- Data Rate:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC (0.154", 3.90mm Width)
MAX9371ESA+T FAQ
1.How can I place an order for MAX9371ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9371ESA+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 MAX9371ESA+T reliable?
The price and inventory of MAX9371ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9371ESA+T is usually 5 days.
3.What payment methods are accepted for MAX9371ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9371ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9371ESA+T?
MAX9371ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9371ESA+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 MAX9371ESA+T?
For technical support, including MAX9371ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9371ESA+T requirements.
6.How does Aetrix verify that MAX9371ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX9371ESA+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 MAX9371ESA+T meets industry standards.
7.What is the process for return or replacement of MAX9371ESA+T?
All MAX9371ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9371ESA+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 MAX9371ESA+T part is unused and in its original packaging.
Return procedure for MAX9371ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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