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Analog Devices Inc./Maxim Integrated MAX9371ESA+
- Part No.:
- MAX9371ESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
MAX9371ESA+.pdf
- Description:
- IC TRANSLTR UNIDIRECTIONAL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,280
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Product details
Overview
MAX9371ESA+ 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, features 270ps propagation delay, and supports -40°C to +85°C industrial temperature range in an 8-pin SO package.
For engineers reviewing the MAX9371ESA+ datasheet, MAX9371ESA+ pinout, MAX9371ESA+ application, or MAX9371ESA+ equivalent, this device is selected for precision level translation where low skew, deterministic jitter under 40ps (P-P), and flow-through pinout simplify high-frequency PCB layout in DSLAM, base station, and mass storage timing paths.
Technical Context
The MAX9371ESA+ implements a bipolar-based differential translator core with internal pull-up biasing that forces outputs high when the LVTTL input is open. Its output stage drives 50Ω terminations referenced to VCC − 2.0V, enabling robust LVPECL/PECL signal integrity without external bias networks.
It uses a flow-through pinout optimized for minimal trace length mismatch between Q and Q̅ pairs, supporting <10ps output-to-output skew only in dual-channel variants (MAX9370/MAX9372); the MAX9371ESA+ provides single-ended input-to-differential output conversion with no inter-channel skew specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.0V to 5.25V - supports direct interface with both 3.3V and 5.0V logic domains without level-shifting circuitry |
| Differential Output Swing | 600mV - meets LVPECL signaling requirements for 1Gbps+ serial links with adequate noise margin |
| Propagation Delay | 270ps typical - enables sub-nanosecond timing alignment critical for synchronous clock distribution |
| Input Logic Compatibility | LVTTL/TTL - accepts VIH ≥ 2.0V and VIL ≤ 0.8V, compatible with standard FPGA I/O and microcontroller GPIO |
| Operating Temperature | -40°C to +85°C - qualified for industrial and telecom infrastructure environments |
| ESD Protection | >2kV HBM - ensures robustness during board handling and system integration |
| Supply Current | 16mA typical at +25°C - enables low-power clock fanout in power-constrained line cards |
Pinout & Package
MAX9371ESA+ is housed in an 8-pin SO (Small Outline) package with gull-wing leads, 1.27mm pitch, and JEDEC MS-012AC outline. The package supports reflow soldering and provides thermal resistance of 170°C/W (junction-to-ambient, still air).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 6 | No Connection (N.C.) | Unbonded die pads - must remain unconnected on PCB to avoid parasitic coupling or latch-up risk |
| 2 | Q (noninverting) | Differential LVPECL output - requires 50Ω termination to VCC − 2V for proper common-mode bias and signal integrity |
| 3 | Q̅ (inverting) | Differential LVPECL complement output - paired with Pin 2; matched trace routing essential to maintain <100ps intra-pair skew |
| 5 | GND | Analog/digital ground reference - must connect to low-impedance ground plane with multiple vias to minimize return-path inductance |
| 7 | D | LVTTL/TTL input - internally pulled up; open-circuit condition defaults output to high differential state |
| 8 | VCC | Positive supply - requires local 0.1µF + 0.01µF ceramic decoupling, with 0.01µF placed closest to pin |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed 1GHz operation at 600mV swing | Validated across full temperature range - enables use as primary clock buffer in OC-48/STM-16 systems |
| 270ps propagation delay | Minimizes cumulative timing budget impact in multi-stage clock trees |
| Output high with input open | Eliminates need for external pull-up resistors - reduces BOM count and board area in sparse-fanout applications |
| Flow-through pinout | Enables straight-through PCB routing - reduces differential pair length mismatch and improves EMI performance |
| Space-saving 8-pin SO package | Compatible with standard SO-8 footprints - allows drop-in replacement in legacy designs using similar translators |
Applications
| Precision Clock Distribution | DSLAM Timing Interface |
|---|---|
Use Scenario: Distributing a 125MHz system reference clock from a central PLL to multiple line-card FPGAs in a carrier-grade DSLAM chassis. IC Role / Device Role / Timing Role: Single-channel LVTTL-to-LVPECL translator providing clean, low-skew differential clock signals to downstream SERDES blocks. Use Value: 270ps delay and 600mV swing ensure setup/hold margins are preserved across 15cm backplane traces terminated at 50Ω. |
Use Scenario: Converting TTL-level framing sync pulses from a control processor into differential PECL signals for upstream ATM cell alignment in DSL line cards. IC Role / Device Role / Timing Role: Level-shifting translator ensuring noise-immune transmission over noisy mixed-signal PCB sections. Use Value: >2kV HBM ESD rating prevents field failures during hot-swap maintenance of line cards. |
| Base Station RF Clocking | Mass Storage Controller Timing |
Use Scenario: Driving local oscillator enable signals to multiple RF transceiver ICs in a 4G/LTE macro base station radio unit. IC Role / Device Role / Timing Role: Single-ended control signal translator generating differential enable strobes synchronized to a 30.72MHz reference. Use Value: Flow-through pinout allows symmetric routing to four identical transceivers, minimizing inter-device skew below 5ps. |
Use Scenario: Translating SATA or SAS reference clock signals from a host controller ASIC to disk drive backplanes in enterprise RAID enclosures. IC Role / Device Role / Timing Role: High-fidelity clock buffer maintaining 1GHz-compatible edge rates for Gen3/Gen4 storage interfaces. Use Value: 40ps deterministic jitter addition preserves PCIe/SATA compliance margins under worst-case voltage/temperature conditions. |
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 | Single-channel ECL translator; requires negative VEE supply (-3.3V or -5.2V); higher ICC (35mA) | Designed for legacy ECL systems; not compatible with single-supply 3.3V/5V rails | Select only if existing design uses negative supply and requires ECL-family compatibility |
| SN65LVDS31DR | LVDS output (not LVPECL); 3.3V-only supply; lower output swing (350mV); no internal pull-up | Targets point-to-point LVDS links, not PECL-terminated backplanes or clock trees | Choose when interfacing to LVDS receivers and board layout supports separate termination networks |
Compared with MC100EPT22DG and SN65LVDS31DR, the MAX9371ESA+ uniquely supports single-supply 3.0–5.25V operation with built-in open-input fail-safe behavior and LVPECL-compliant output levels - making it the only option among the three for cost-sensitive, single-rail telecom clock distribution.
Availability
MAX9371ESA+ is available at Aetrix Electronics and suitable for DSLAM timing interface, base station RF clocking, and mass storage controller timing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX9371ESA+ 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 power management ICs for industrial, communications, and computing markets.
The MAX9371ESA+ belongs to Maxim's high-speed interface translator product line, engineered specifically for reliable level translation in telecom infrastructure where signal fidelity, timing precision, and supply flexibility are non-negotiable.
FAQ
What is the recommended termination for MAX9371ESA+ differential outputs?
The MAX9371ESA+ differential outputs must be terminated with 50Ω resistors each to VCC − 2.0V. This Thevenin-style termination establishes the correct common-mode voltage (~VCC − 1.3V) required for LVPECL logic levels. Using 50Ω series termination or AC coupling without DC bias will violate output voltage specifications and degrade jitter performance. Always place termination resistors as close as possible to the MAX9371ESA+ output pins.
Does MAX9371ESA+ require external pull-up or pull-down resistors on its input pin?
No, the MAX9371ESA+ does not require external pull-up or pull-down resistors on its D input pin. It includes internal pull-up circuitry that drives the Q/Q̅ outputs to a differential high state when the input is left open or disconnected. This feature eliminates external components in fail-safe configurations and simplifies PCB layout for unused control lines.
Can MAX9371ESA+ operate from a 3.3V supply while driving 50Ω loads referenced to 1.3V?
Yes, MAX9371ESA+ is fully specified to operate from 3.3V and deliver compliant LVPECL output levels when terminating Q and Q̅ each to VCC − 2.0V = 1.3V. At 3.3V supply, VOH is guaranteed ≥ VCC − 1.145V (≥2.155V) and VOL ≤ VCC − 1.945V (≤1.355V), yielding ≥600mV differential swing - meeting all LVPECL interface requirements per EIA/JESD65B.
What is the maximum guaranteed operating frequency of MAX9371ESA+?
The MAX9371ESA+ is guaranteed to operate up to 1.0GHz with ≥600mV differential output swing across the full -40°C to +85°C temperature range. Typical performance reaches 1.5GHz, but system designs requiring guaranteed timing margins should rely on the 1.0GHz minimum specification documented in the AC Electrical Characteristics table.
Is MAX9371ESA+ pin-compatible with other devices in the MAX937x family?
No, MAX9371ESA+ is not pin-compatible with MAX9370 or MAX9372. While all three share the same 8-pin SO package footprint, their pin functions differ significantly: MAX9371ESA+ has three N.C. pins (1,4,6) and one input (D), whereas MAX9370/MAX9372 have two independent inputs (D0/D1) and four dedicated outputs (Q0/Q0̅/Q1/Q1̅). PCB layout must be specific to MAX9371ESA+.
MAX9371ESA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- Packaging:
- Tube
- 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+ FAQ
1.How can I place an order for MAX9371ESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9371ESA+ 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+ reliable?
The price and inventory of MAX9371ESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9371ESA+ is usually 5 days.
3.What payment methods are accepted for MAX9371ESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9371ESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9371ESA+?
MAX9371ESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9371ESA+ 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+?
For technical support, including MAX9371ESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9371ESA+ requirements.
6.How does Aetrix verify that MAX9371ESA+ is sourced from the original manufacturer or authorized distributors?
All MAX9371ESA+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX9371ESA+?
All MAX9371ESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX9371ESA+, 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+ part is unused and in its original packaging.
Return procedure for MAX9371ESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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