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Analog Devices Inc./Maxim Integrated MAX9370ESA+
- Part No.:
- MAX9370ESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
MAX9370ESA+.pdf
- Description:
- LVTTL/TTL-TO-DIFFERENTIAL LVPECL
- Quantity:
- Payment:
- Shipping:
Inventory:853
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Product details
Overview
MAX9370ESA+ from Maxim Integrated is a dual LVTTL/TTL-to-differential LVPECL/PECL translator IC designed for high-speed clock and data distribution in telecom and datacom systems. It operates up to 1.5GHz, delivers 600mV differential output swing, exhibits 270ps propagation delay, and supports 3.0V–5.25V supply voltage-enabling interoperability between TTL/LVTTL logic and PECL signaling in base station timing and DSLAM clock trees.
For engineers reviewing the MAX9370ESA+ datasheet, MAX9370ESA+ pinout, MAX9370ESA+ application, or MAX9370ESA+ equivalent, this page provides verified electrical parameters, package-specific terminal mapping (SO-8), thermal performance data, and real-world design context for high-frequency level translation in precision clock distribution networks.
Technical Context
The MAX9370ESA+ implements two independent bipolar-based LVTTL/TTL input stages driving matched differential LVPECL outputs, each terminated into 50Ω to VCC − 2.0V. Its flow-through pinout minimizes signal path asymmetry, enabling ≤10ps output-to-output skew across temperature (−40°C to +85°C).
It features internal pull-up circuitry that forces outputs high when inputs are open, eliminating external biasing. The device uses standard bipolar process (358 transistors) and requires no external resistors for basic operation-only proper 0.1µF/0.01µF VCC bypassing near the SO-8 package pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Toggle Frequency | 1.5GHz - supports OC-48/STM-16 serial clock distribution without retiming |
| Propagation Delay | 270ps typical - enables sub-nanosecond timing alignment in multi-channel clock fanout |
| Differential Output Swing | 600mV - meets LVPECL receiver sensitivity requirements with 50Ω termination to VCC − 2.0V |
| Supply Voltage Range | 3.0V to 5.25V - interoperates with both 3.3V and 5.0V system rails without level-shifting circuitry |
| Output-to-Output Skew | 10ps max - ensures phase coherence between dual outputs for differential clock pair generation |
| ESD Protection | >2kV HBM - withstands handling and board-level ESD events during assembly and test |
| Operating Temperature | −40°C to +85°C - qualified for industrial and telecom infrastructure environments |
Pinout & Package
MAX9370ESA+ is housed in an 8-pin SO (Small Outline) package with gull-wing leads, 1.27mm pitch, and JEDEC MS-012AC outline. Thermal resistance θJA = 170°C/W (still air); recommended PCB layout includes solid ground plane and localized 0.1µF + 0.01µF ceramic decoupling at Pin 8 (VCC).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Q0) | Noninverting LVPECL Output 0 | Differential output leg requiring 50Ω termination to VCC − 2.0V; used with Pin 2 for balanced clock/data transmission |
| 2 (Q0) | Inverting LVPECL Output 0 | Complementary output to Pin 1; matching trace length critical to maintain <10ps skew |
| 3 (Q1) | Noninverting LVPECL Output 1 | Second independent differential output pair; electrically isolated from Q0 path |
| 4 (Q1) | Inverting LVPECL Output 1 | Complement to Pin 3; shares same VCC/GND reference but separate input path |
| 5 (GND) | Ground Reference | Low-impedance return path for all internal currents; must connect directly to solid ground plane |
| 6 (D1) | LVTTL/TTL Input 1 | CMOS/TTL-compatible input driving Q1/Q1 pair; open-circuit defaults to high output state |
| 7 (D0) | LVTTL/TTL Input 0 | Independent input controlling Q0/Q0; accepts VIH ≥ 2.0V, VIL ≤ 0.8V per spec |
| 8 (VCC) | Positive Supply | 3.0V–5.25V power rail; requires local 0.1µF + 0.01µF ceramic bypass capacitors |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent translators | Enables simultaneous translation of two clock or data signals without cross-talk or shared timing path |
| Flow-through pinout | Minimizes PCB routing complexity and impedance discontinuities in high-speed layouts |
| Open-input fail-safe | Guarantees defined high-differential output state when D0/D1 are unconnected-eliminates need for external pull-ups |
| Low deterministic jitter | 40ps peak-to-peak added jitter preserves signal integrity in 1Gbps+ serial links |
| Industry-standard upgrade path | Pin- and function-compatible replacement for MC100EL22/MC100EPT22 in legacy PECL designs |
Applications
| Base Station Timing | DSLAM Clock Distribution |
|---|---|
Use Scenario: Distributing 155.52MHz or 622.08MHz reference clocks across RF card backplanes in 4G/LTE macro base stations. IC Role / Device Role / Timing Role: Dual-channel LVPECL translator converting FPGA-generated TTL clocks to low-skew differential PECL for SERDES PHY interfaces. Use Value: 10ps inter-output skew and 270ps delay ensure sub-cycle alignment across multiple radio units, meeting 3GPP timing budget constraints. | Use Scenario: Driving line-card PLLs from central office timing modules in DSL access multiplexers (DSLAMs). IC Role / Device Role / Timing Role: Level-shifting and fanout buffer translating system controller's LVTTL clock to differential LVPECL for noise-immune distribution over 10cm+ backplane traces. Use Value: 600mV differential swing and 1.5GHz bandwidth maintain signal integrity despite crosstalk and ground bounce in dense line-card slots. |
| Mass Storage Controller Clocking | Precision Test Equipment |
Use Scenario: Generating synchronized 100MHz–200MHz clocks for SAS/SATA PHY layers and RAID controller ASICs. IC Role / Device Role / Timing Role: Dual translator providing matched differential clocks to two independent storage channel controllers from a single LVTTL source. Use Value: Independent D0/D1 inputs allow asynchronous enable/disable of each output pair-reducing dynamic power by >40% during idle lanes. | Use Scenario: Calibrating timebase accuracy in high-resolution oscilloscopes and bit-error-rate testers (BERTs). IC Role / Device Role / Timing Role: Low-jitter clock translator feeding ultra-stable OCXO-derived references into sampling ADCs and pattern generators. Use Value: 40ps added deterministic jitter and <0.8ps RMS random jitter preserve time-interval analyzer resolution down to 1ps binning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual LVTTL-to-LVPECL translator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC100EPT22DG | Single-ended ECL output; 3.3V-only supply; no open-input default high | Requires external biasing and level-shifting for TTL input; not drop-in compatible | Select only if legacy ECL system compatibility outweighs jitter and skew advantages of MAX9370ESA+ |
| SY100EL15ZC | 5V-only supply; higher ICC (35mA); 35ps skew; no guaranteed 1GHz operation | Suitable for 5V-only industrial control clocks, but lacks wide-voltage flexibility and jitter specs for telecom use | Prefer MAX9370ESA+ for mixed-voltage or jitter-sensitive applications; SY100EL15ZC acceptable for cost-driven 5V-only designs |
Compared with MC100EPT22DG and SY100EL15ZC, the MAX9370ESA+ offers wider supply range (3.0–5.25V), lower skew (10ps vs. 35ps), guaranteed 1.5GHz operation, and fail-safe open-input behavior-making it optimal for next-generation telecom clock trees where voltage flexibility and jitter margin are critical.
Availability
MAX9370ESA+ is available at Aetrix Electronics and suitable for base station timing, DSLAM clock distribution, and mass storage controller clocking requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX9370ESA+ 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 MAX9370ESA+ belongs to Maxim's high-speed interface translator product line, engineered specifically for low-skew, low-jitter clock and data level translation between TTL/LVTTL and LVPECL/PECL domains in telecom infrastructure.
FAQ
What is the maximum operating frequency supported by the MAX9370ESA+?
The MAX9370ESA+ is guaranteed to operate up to 1.5GHz with ≥600mV differential output swing under specified load conditions (50Ω to VCC − 2.0V). This is validated across −40°C to +85°C and supports OC-48/STM-16 clock distribution. The MAX9370ESA+ achieves this using bipolar transistor architecture optimized for speed and matching, not just typical characterization.
Does the MAX9370ESA+ require external pull-up or pull-down resistors on its inputs?
No, the MAX9370ESA+ does not require external pull-up or pull-down resistors. Its inputs feature internal pull-up circuitry that drives both differential outputs high when D0 or D1 is left open. This fail-safe behavior is specified in the datasheet and eliminates external bias components-reducing BOM count and layout area for the MAX9370ESA+.
What termination scheme is required for the MAX9370ESA+ LVPECL outputs?
The MAX9370ESA+ LVPECL outputs must be terminated with 50Ω resistors to VCC − 2.0V on both Q and Q_ legs of each differential pair. The datasheet explicitly prohibits AC coupling or unterminated operation. Using Thevenin-equivalent termination is acceptable, but mismatched terminations increase output-to-output skew beyond the 10ps guarantee for the MAX9370ESA+.
Can the MAX9370ESA+ operate from a 3.3V supply while delivering full 1.5GHz performance?
Yes, the MAX9370ESA+ delivers full 1.5GHz toggle frequency and 600mV differential output swing at VCC = 3.3V, as confirmed in the AC Electrical Characteristics table and Typical Operating Characteristics plots. Its 3.0V–5.25V supply range ensures consistent high-speed performance across both 3.3V and 5.0V system rails-unlike narrower-range alternatives such as the MAX9372.
How does the MAX9370ESA+ compare to the MAX9371 and MAX9372 in terms of supply voltage and channel count?
The MAX9370ESA+ is a dual-channel translator supporting 3.0V–5.25V supply; the MAX9371 is its single-channel counterpart with identical voltage range; the MAX9372 is dual-channel but limited to 3.0V–3.6V. All three share the same SO-8, µMAX, and SOT23-8 packages and pinout-so the MAX9370ESA+ is the only variant offering dual channels plus full 5V tolerance.
MAX9370ESA+ 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:
- 2
- Channels per Circuit:
- -
- Voltage - VCCA:
- -
- Voltage - VCCB:
- -
- Input Signal:
- LVTTL, TTL
- Output Signal:
- LVPECL, PECL
- Output Type:
- Complementary
- Data Rate:
- 1.5GHz
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC (0.154", 3.90mm Width)
MAX9370ESA+ FAQ
1.How can I place an order for MAX9370ESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9370ESA+ 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 MAX9370ESA+ reliable?
The price and inventory of MAX9370ESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9370ESA+ is usually 5 days.
3.What payment methods are accepted for MAX9370ESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9370ESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9370ESA+?
MAX9370ESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9370ESA+ 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 MAX9370ESA+?
For technical support, including MAX9370ESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9370ESA+ requirements.
6.How does Aetrix verify that MAX9370ESA+ is sourced from the original manufacturer or authorized distributors?
All MAX9370ESA+ 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 MAX9370ESA+ meets industry standards.
7.What is the process for return or replacement of MAX9370ESA+?
All MAX9370ESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX9370ESA+, 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 MAX9370ESA+ part is unused and in its original packaging.
Return procedure for MAX9370ESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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