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Analog Devices Inc./Maxim Integrated MAX9361EKA-T
- Part No.:
- MAX9361EKA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
MAX9361EKA-T.pdf
- Description:
- LOGIC LEVEL TRANSLATOR
- Quantity:
- Payment:
- Shipping:
Inventory:7,278
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Product details
Overview
MAX9361EKA-T from Maxim Integrated is a 5V TTL/CMOS-to-differential LVECL/ECL translator in an 8-pin SOT23 package, delivering 1.3GHz typical toggle frequency, 600ps typical propagation delay, and >300mV output swing at 250MHz. It operates with VCC = 4.5V–5.5V and VEE = –2.375V to –5.5V, and serves as a high-speed clock/data-level translation interface in ECL-based timing distribution systems.
For engineers reviewing the MAX9361EKA-T datasheet, MAX9361EKA-T pinout, MAX9361EKA-T application, or MAX9361EKA-T equivalent, key selection considerations include its 5V input compatibility, differential LVECL/ECL output drive capability, ultra-low skew performance, thermal resistance (112°C/W), and open-input high-default behavior - all critical for deterministic signal integrity in high-frequency backplane and FPGA clocking designs.
Technical Context
The MAX9361EKA-T implements a bipolar process-based single-channel translator with TTL/CMOS input logic referenced to VCC (4.5V–5.5V) and differential ECL/LVECL outputs referenced to VEE (–2.375V to –5.5V) and GND. Its internal pullup ensures Q/Q outputs default to high when D is floating.
It supports termination to –2V via 50Ω resistors on both Q and Q outputs, enabling low-skew differential signaling. The device exhibits 81ps–150ps added deterministic jitter (P-P) at 200Mbps and 4ps–10ps added random jitter (RMS) at 100MHz, confirming suitability for sub-nanosecond timing-critical applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply Range | 4.5V to 5.5V - enables direct interfacing with standard 5V TTL/CMOS logic without level-shifting circuitry |
| VEE Supply Range | –2.375V to –5.5V - supports both LVECL (–2.375V to –3.8V) and standard ECL (–4.2V to –5.5V) output levels |
| Propagation Delay | 600ps typical - ensures minimal timing uncertainty in high-speed clock fanout and data path synchronization |
| Differential Output Swing | 550mV to 699mV - provides robust noise margin for reliable reception by downstream ECL/LVECL receivers |
| Input Open Default | Outputs go high - eliminates undefined states during power-up, configuration, or signal loss scenarios |
| IEE Supply Current | 6.6mA typical - enables low-power operation while maintaining full-speed performance under load |
| Thermal Resistance θJA | 112°C/W (SOT23) - defines maximum allowable power dissipation (714mW at +70°C ambient) for thermal design |
Pinout & Package
MAX9361EKA-T uses an 8-pin SOT23 package (package code K8-1), with exposed pad not electrically connected. Bypass capacitors (0.1µF and 0.01µF ceramic) must be placed adjacent to VCC and VEE pins, with the 0.01µF capacitor closest to the device.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SOT23) | VEE | Negative supply rail for ECL/LVECL output stage; requires local bypassing to GND for stable bias and low-noise operation |
| 2 (SOT23) | D | Single-ended TTL/CMOS input; accepts VIH ≥ 2.0V and VIL ≤ 0.8V; internally pulled up to force high output if left open |
| 3,4 (SOT23) | N.C. | No-connect pins; must be tied to GND per manufacturer guidance to prevent parasitic coupling or EMI susceptibility |
| 5 (SOT23) | GND | Analog and digital reference ground; forms return path for VCC, VEE, and output currents; requires low-inductance connection |
| 6 (SOT23) | Q | Inverting differential LVECL/ECL output; requires 50Ω termination to –2V for matched impedance and minimal skew vs. Q |
| 7 (SOT23) | Q | Noninverting differential LVECL/ECL output; must be terminated identically to Q to preserve <100ps inter-output skew |
| 8 (SOT23) | VCC | Positive supply for input buffer and internal logic; bypassing essential to suppress supply-induced jitter and maintain VIH/VIL margins |
Key Features
| Feature | Design Value |
|---|---|
| Open-input high default | Guarantees defined Q/Q logic state during initialization or signal loss - eliminates need for external pullups in fail-safe clock trees |
| LVECL/ECL dual-voltage support | Single device supports both –2.375V to –3.8V (LVECL) and –4.2V to –5.5V (ECL) output rails - simplifies design reuse across legacy and modern ECL systems |
| ESD protection >2kV HBM | Enables safe handling and board-level integration without additional transient suppression - reduces BOM count in industrial environments |
| Low 6.6mA IEE current | Minimizes heat generation in dense PCB layouts while sustaining 1.3GHz operation - improves long-term reliability in sealed enclosures |
| Matched Q/Q rise/fall times | 250ps–353ps (typ) over temperature - ensures <50ps differential skew, critical for jitter-sensitive SerDes and PLL reference distribution |
Applications
| High-Speed Clock Distribution | FPGA I/O Interface Translation |
|---|---|
|
Use Scenario: Distributing a 100MHz–500MHz system clock from a microcontroller or oscillator to multiple ECL logic devices across a backplane. IC Role / Device Role / Timing Role: Single-channel level translator converting 5V CMOS clock edges into complementary LVECL signals with sub-nanosecond skew. Use Value: Enables deterministic setup/hold timing across 8+ downstream receivers using matched trace lengths and 50Ω terminations on both Q and Q. |
Use Scenario: Interfacing a 5V FPGA I/O bank to legacy ECL bus transceivers in test equipment or instrumentation. IC Role / Device Role / Timing Role: Bidirectional-capable (input-only) translator providing clean, jitter-controlled differential drive for ECL-compatible data lanes. Use Value: Eliminates external resistor networks and reduces board area by integrating termination-aware output drivers with built-in open-drain safety logic. |
| RF Signal Path Level Shifting | High-Resolution ADC/DAC Clock Buffering |
|
Use Scenario: Converting baseband digital control signals (e.g., LO enable, gain select) from 5V logic to ECL-compatible levels in RF synthesizer modules. IC Role / Device Role / Timing Role: Low-jitter translator ensuring precise edge alignment between digital control and analog RF subsystems. Use Value: Achieves <150ps added deterministic jitter, preventing spurious sidebands in phase-sensitive RF modulation schemes. |
Use Scenario: Delivering low-jitter sampling clocks from a precision oscillator to high-speed ADCs or DACs requiring ECL-level inputs. IC Role / Device Role / Timing Role: Clock buffer with differential output swing >550mV and propagation delay variation <100ps over temperature. Use Value: Maintains aperture uncertainty below 0.1% of period at 250MHz, preserving ENOB in 14-bit+ data converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC100ELT24DG | 8-pin SO package; higher 12mA IEE; 500ps propagation delay; identical VEE range and pinout | Preferred for through-hole prototyping or where thermal mass improves stability; not SOT23 drop-in | Select when board space allows SO-8 and higher drive current is needed for longer traces |
| MAX9360EKA-T | 3.3V input variant; 3GHz toggle frequency; 440ps propagation delay; lower 13.8mA IEE | Used where source logic is LVTTL/CMOS (e.g., ASICs, newer FPGAs); incompatible with 5V TTL inputs | Choose only for 3.3V systems - not interchangeable with MAX9361EKA-T due to input voltage domain mismatch |
Compared with MC100ELT24DG and MAX9360EKA-T, the MAX9361EKA-T uniquely balances 5V input compatibility, SOT23 footprint efficiency, and sub-1ns timing precision - making it optimal for space-constrained, high-density 5V logic-to-ECL interfaces where thermal management and layout simplicity are prioritized.
Availability
MAX9361EKA-T is available at Aetrix Electronics and suitable for high-speed clock distribution, FPGA I/O interfacing, RF control signal translation, and precision ADC/DAC clock buffering requiring stable component supply across industrial, test & measurement, and communications equipment lifecycles.
Supply support for MAX9361EKA-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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing applications.
The MAX9360/MAX9361 family was designed specifically for low-skew, high-frequency clock and data translation between single-ended TTL/CMOS and differential ECL/LVECL domains - targeting applications demanding sub-nanosecond timing fidelity and robust noise immunity.
FAQ
What is the recommended termination for MAX9361EKA-T outputs?
Both Q and Q outputs must be terminated with 50Ω resistors to –2V (or equivalent Thevenin termination) to ensure matched impedance, minimize reflections, and achieve <100ps inter-output skew. Using unequal terminations or leaving one output unterminated degrades differential integrity and increases jitter in the MAX9361EKA-T.
Can MAX9361EKA-T operate with VEE = –3.3V?
Yes - the MAX9361EKA-T supports VEE from –2.375V to –5.5V, so –3.3V is within specification and configures the device for LVECL output levels. At this rail, VOH ≈ –0.88V and VOL ≈ –1.61V, yielding ~730mV differential swing, which exceeds the 550mV minimum specified in the MAX9361EKA-T datasheet.
Does MAX9361EKA-T require external pull-up resistors on the D input?
No - the MAX9361EKA-T includes internal pull-up circuitry on the D input, ensuring Q and Q default to high when the input is disconnected or floating. This eliminates the need for external pull-ups and guarantees a known state during power-up or signal loss in the MAX9361EKA-T.
What is the maximum operating frequency of MAX9361EKA-T at 500mV output swing?
The MAX9361EKA-T supports up to 500MHz maximum toggle frequency when maintaining ≥500mV differential output swing, as confirmed in AC Electrical Characteristics. This limit applies across the full –40°C to +85°C temperature range and is validated with 50Ω terminations to –2V.
Is MAX9361EKA-T pin-compatible with MC100ELT24?
No - although the MAX9361EKA-T is an improved second source of MC100ELT24, it uses an 8-pin SOT23 package while MC100ELT24 is offered in SO-8. Pin functions match (VEE, D, N.C., GND, Q, Q, VCC), but physical layout, thermal characteristics, and soldering requirements differ significantly between the two packages for the MAX9361EKA-T.
MAX9361EKA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- Packaging:
- Bulk
- Product Status:
- Active
- Translator Type:
- Mixed Signal
- Channel Type:
- Unidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 1
- Voltage - VCCA:
- -
- Voltage - VCCB:
- -
- Input Signal:
- CMOS, LVTTL, TTL
- Output Signal:
- ECL, LVECL
- Output Type:
- Complementary
- Data Rate:
- 1.3GHz
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8
MAX9361EKA-T FAQ
1.How can I place an order for MAX9361EKA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9361EKA-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 MAX9361EKA-T reliable?
The price and inventory of MAX9361EKA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9361EKA-T is usually 5 days.
3.What payment methods are accepted for MAX9361EKA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9361EKA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9361EKA-T?
MAX9361EKA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9361EKA-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 MAX9361EKA-T?
For technical support, including MAX9361EKA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9361EKA-T requirements.
6.How does Aetrix verify that MAX9361EKA-T is sourced from the original manufacturer or authorized distributors?
All MAX9361EKA-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 MAX9361EKA-T meets industry standards.
7.What is the process for return or replacement of MAX9361EKA-T?
All MAX9361EKA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9361EKA-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 MAX9361EKA-T part is unused and in its original packaging.
Return procedure for MAX9361EKA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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