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Analog Devices Inc./Maxim Integrated MAX9203EKA+T
- Part No.:
- MAX9203EKA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SOT-23-8
- Datasheet:
-
MAX9203EKA+T.pdf
- Description:
- IC COMPARATOR 1 W/LATCH SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:8,788
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Product details
Overview
MAX9203EKA+T from Maxim Integrated is a single high-speed voltage comparator with TTL-compatible output and latch input, designed for precision threshold detection in fast data acquisition systems. It delivers 7ns typical propagation delay at 5mV overdrive, consumes only 9mW at +5V supply, supports ±5V or +5V-to-+10V analog supplies with rail-to-rail common-mode input range including the negative rail, and is housed in an 8-pin SOT23-8 package.
For engineers reviewing the MAX9203EKA+T datasheet, MAX9203EKA+T pinout, MAX9203EKA+T application, or MAX9203EKA+T equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation guidance, and two confirmed alternative comparators with documented functional and layout implications.
Technical Context
The MAX9203EKA+T implements a bipolar high-gain comparator core with active internal pullup on its TTL output stage, enabling direct interfacing to LS-TTL loads without external resistors. Its latch input allows synchronous sampling of analog thresholds - the output state is held when LATCH is driven low, supporting time-aligned decision capture in multi-channel sampling systems.
It supports three analog supply configurations: split ±5V (VEE = –5V, VCC = +5V), single +5V (VEE = GND, VCC = +5V), or extended single +10V (VEE = GND, VCC = +10V), while requiring a fixed +5V digital supply (VDD). Input common-mode range extends to VEE – 0.1V, enabling ground-referenced sensing in single-supply operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 7ns typical at 5mV overdrive - enables sampling of >100MHz signals with sub-10ns timing resolution. |
| Supply Voltage Range | VCC–VEE = +4.75V to +10.5V; VDD = +4.75V to +5.25V - supports flexible mixed-signal power partitioning. |
| Input Offset Voltage | 7.5mV max over temperature - sets minimum detectable differential signal for precision thresholding. |
| Power Dissipation | 9mW per comparator at +5V - reduces thermal load in dense PCB layouts and battery-sensitive designs. |
| Output Drive | VOH = 3.0V min at 1mA source; VOL = 0.4V max at 8mA sink - ensures robust TTL logic level compatibility. |
| Latch Timing | tS = 2ns setup, tN = 1ns hold, tPW(D) = 8ns min pulse width - defines minimum clock-to-data timing margin for synchronous capture. |
Pinout & Package
MAX9203EKA+T is packaged in an 8-pin SOT23-8 surface-mount package with exposed pad (thermal performance optimized for continuous operation at +85°C ambient).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VCC) | Positive Analog Supply | Accepts +4.75V to +10.5V; powers analog core; decouple locally with 100nF ceramic. |
| 2 (IN+) | Positive Input | Differential input terminal; common-mode range includes VEE – 0.1V; 5.5MΩ impedance. |
| 3 (IN−) | Negative Input | Differential input terminal; matched to IN+; supports rail-to-rail input swing relative to VEE. |
| 4 (VEE) | Negative Analog Supply / Substrate | Reference for analog section; tied to GND in single-supply mode; must be decoupled separately. |
| 5 (LATCH) | Latch Enable Input | TTL-compatible control; drives output into transparent (high) or latched (low) state; 0.8–2.0V thresholds. |
| 6 (GND) | Digital Ground | Return path for VDD and digital logic; separate from analog ground (VEE) to minimize noise coupling. |
| 7 (OUT) | TTL Output | Active-pullup TTL output; fan-out of four LS-TTL loads; 1.0ns fall time at 15pF load. |
| 8 (VDD) | Positive Digital Supply | Fixed +4.75V to +5.25V; powers latch logic and output stage; requires dedicated 100nF decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends to VEE – 0.1V, enabling ground-sensing in single-supply +5V systems without level-shifting. |
| Integrated latch with TTL inputs | Eliminates need for external D-latch ICs in synchronized sampling applications, reducing BOM count and board area. |
| Separate analog/digital supplies | Allows isolation of noisy digital domains from sensitive analog inputs via independent VEE/GND routing. |
| 7ns propagation delay | Supports accurate timing alignment in high-speed A/D converter front-ends and pulse-width measurement circuits. |
| Low 9mW power consumption | Enables integration into thermally constrained modules and portable instrumentation without forced cooling. |
Applications
| High-Speed A/D Converter Front-End | Line Receiver with Threshold Detection |
|---|---|
|
Use Scenario: Comparing analog input against reference voltage prior to sampling in flash or pipeline ADC architectures. IC Role / Device Role / Timing Role: Precision threshold detector providing sub-10ns decision latency to enable >100MSPS conversion rates. Use Value: Matches ADC aperture jitter requirements by minimizing comparator-induced timing uncertainty in sample-and-hold paths. |
Use Scenario: Recovering digital logic levels from attenuated or noisy transmission lines (e.g., RS-422, LVDS stubs). IC Role / Device Role / Timing Role: High-speed line receiver with programmable hysteresis via external feedback, operating up to 100MHz. Use Value: Enables clean edge regeneration without external amplification, reducing signal integrity risk in backplane interconnects. |
| PWM Signal Squaring | Threshold Detector in V/F Converters |
|
Use Scenario: Converting slow-rising or distorted PWM waveforms into clean, TTL-compatible square waves for microcontroller input capture. IC Role / Device Role / Timing Role: Fast comparator with latch used to freeze duty-cycle measurements at precise system clock edges. Use Value: Achieves <1% duty-cycle error at 10MHz PWM frequencies due to consistent 7ns propagation delay across temperature. |
Use Scenario: Detecting zero-crossings or amplitude thresholds in voltage-to-frequency converter feedback loops. IC Role / Device Role / Timing Role: Low-drift comparator stabilizing oscillator frequency by comparing integrator output to reference. Use Value: 7.5mV max input offset ensures <0.1% full-scale error in 10V-range V/F converters over –40°C to +85°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM311DR | No internal latch; open-collector output requiring external pullup; 115ns propagation delay; higher 150mW power. | Suitable for DC-coupled comparator use but not for synchronous sampling; requires additional components for TTL-level output. | Select LM311DR only when latch functionality is unnecessary and cost is primary constraint; verify pullup resistor sizing for load capacitance. |
| TLV3501CDR | CMOS process; 4.5ns propagation delay; rail-to-rail input; no latch; 2.7–5.5V single supply only; 2.5mW power. | Better speed and lower power, but lacks latch and dual-supply flexibility; incompatible with ±5V or +10V analog rails. | Choose TLV3501CDR for ultra-low-power, single-supply, high-speed apps where latch is omitted; re-evaluate supply architecture. |
Compared with MAX9203EKA+T, LM311DR trades speed and integration for cost and simplicity, while TLV3501CDR improves speed and efficiency but sacrifices latch capability and analog supply flexibility - making MAX9203EKA+T uniquely suited for synchronized, mixed-supply threshold detection.
Availability
MAX9203EKA+T is available at Aetrix Electronics and suitable for high-speed A/D converter front-ends, line receivers, and PWM squaring circuits requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for MAX9203EKA+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 industrial, communications, and computing applications.
The MAX920x family was designed specifically for high-speed, low-power threshold detection in data acquisition and signal conditioning systems - emphasizing propagation delay consistency, supply flexibility, and integrated latch control for synchronous sampling.
FAQ
What is the maximum analog supply voltage range supported by the MAX9203EKA+T?
The MAX9203EKA+T supports an analog supply range of VCC – VEE = +4.75V to +10.5V. This includes configurations such as ±5V (VEE = –5V, VCC = +5V), single +5V (VEE = GND, VCC = +5V), or extended single +10V (VEE = GND, VCC = +10V). The digital supply VDD must remain within +4.75V to +5.25V. Exceeding these limits risks permanent damage per absolute maximum ratings.
Does the MAX9203EKA+T require external pullup resistors on its output?
No, the MAX9203EKA+T features an active internal pullup on its TTL output stage, eliminating the need for external pullup resistors. Its output is fully compatible with standard LS-TTL loads (fan-out of four) and delivers VOH ≥ 3.0V at 1mA source current. Adding external pullups may cause excessive current draw or logic level violations.
Can the MAX9203EKA+T operate from a single +3.3V supply?
No, the MAX9203EKA+T cannot operate from a single +3.3V supply. Its digital supply VDD requires +4.75V to +5.25V, and analog supply VCC–VEE must be at least +4.75V. While VEE can be grounded for single-supply operation, VCC must be ≥ +4.75V - making +3.3V systems incompatible without level-shifting or supply boosting.
What is the function of the LATCH pin on the MAX9203EKA+T?
The LATCH pin on the MAX9203EKA+T controls output transparency: when pulled high (≥2.0V), the comparator responds immediately to input changes; when pulled low (≤0.8V), the current output state is latched and held regardless of subsequent input transitions. This enables synchronous sampling aligned to system clocks, critical in multi-channel data acquisition.
How does the input common-mode range of the MAX9203EKA+T benefit single-supply designs?
The MAX9203EKA+T input common-mode range extends to VEE – 0.1V, allowing it to sense signals down to ground (when VEE = GND) in single-supply +5V systems. This eliminates the need for input level-shifting circuitry in ground-referenced applications like sensor interface or battery monitoring, simplifying design and improving accuracy.
MAX9203EKA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SOT-23-8
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- with Latch
- Number of Elements:
- 1
- Output Type:
- TTL
- Voltage - Supply, Single/Dual (±):
- 4.75V ~ 10.5V, ±2.375V ~ 5.75V
- :
- 4mV @ ±5V
- Voltage - Input Offset (Max):
- 5µA @ ±5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 2mA, 1.6mA, 800µA
- Current - Quiescent (Max):
- 86.02dB CMRR, 86.02dB PSRR
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-8
MAX9203EKA+T FAQ
1.How can I place an order for MAX9203EKA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9203EKA+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 MAX9203EKA+T reliable?
The price and inventory of MAX9203EKA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9203EKA+T is usually 5 days.
3.What payment methods are accepted for MAX9203EKA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9203EKA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9203EKA+T?
MAX9203EKA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9203EKA+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 MAX9203EKA+T?
For technical support, including MAX9203EKA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9203EKA+T requirements.
6.How does Aetrix verify that MAX9203EKA+T is sourced from the original manufacturer or authorized distributors?
All MAX9203EKA+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 MAX9203EKA+T meets industry standards.
7.What is the process for return or replacement of MAX9203EKA+T?
All MAX9203EKA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9203EKA+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 MAX9203EKA+T part is unused and in its original packaging.
Return procedure for MAX9203EKA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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