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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:2,840
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Product details
Overview
The MAX9203EKA-T from Maxim Integrated is a single high-speed voltage comparator with TTL-compatible output and latch input, housed in an 8-pin SOT23-8 package. 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 used in high-speed A/D converters, line receivers, and signal restoration circuits.
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 for key specs, validated pin functions, application-specific implementation value, and two confirmed alternative comparators with documented functional and application-level differences.
Technical Context
The MAX9203EKA-T implements a bipolar high-gain comparator core optimized for sub-10ns response with active internal TTL pullups. Its analog input stage accepts common-mode voltages from VEE − 0.1V to VCC − 2.25V, enabling ground-sensing operation when VEE = GND. The latch input (Pin 5) controls output hold behavior with defined threshold voltages (VLH = 1.4–2.0V, VLL = 0.8–1.4V) and timing constraints (tS = 2ns, tN = 1ns, tPW(D) = 8ns).
It operates from separate analog (VCC/VEE) and digital (VDD) supplies or a single +5V supply (VEE = GND), with independent supply current specs: ICC = 1.3–2.0mA, IEE = 1.0–1.6mA, IDD = 0.5–0.8mA. Output drive capability is VOH ≥ 3.0V at 1mA source and VOL ≤ 0.4V at 8mA sink, meeting standard TTL logic thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 7ns typical (5mV overdrive, CL = 15pF): enables sampling of >100MHz signals without timing skew. |
| Supply Configuration | Separate VCC/VEE (±5V or +5V/+10V) and VDD (+5V): isolates analog noise from digital switching paths. |
| Input Common-Mode Range | VEE − 0.1V to VCC − 2.25V: allows direct ground-referenced sensing in single-supply systems. |
| Power Consumption | 9mW per comparator at +5V: reduces thermal load in dense PCB layouts and battery-sensitive designs. |
| Output Drive | VOH ≥ 3.0V @ 1mA, VOL ≤ 0.4V @ 8mA: ensures reliable interfacing with LS-TTL and standard CMOS inputs. |
| Latch Timing | tS = 2ns, tN = 1ns, tPW(D) = 8ns: defines minimum setup/hold/pulse width for synchronous capture in data acquisition. |
Pinout & Package
Package: 8-pin SOT23-8, surface-mount, 2.9mm × 1.6mm footprint, 0.65mm pitch, JEDEC MO-178 variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VCC) | Positive Analog Supply | Accepts +5V to +10V; powers analog comparator core; requires local 100nF decoupling. |
| 2 (IN+) | Positive Input | Differential input terminal; high-impedance (RINCM = 5.5MΩ); sensitive to layout-induced noise. |
| 3 (IN−) | Negative Input | Differential input terminal; matched to IN+ for offset and CMRR performance. |
| 4 (VEE) | Negative Analog Supply / Substrate | Reference for analog section; tied to GND in single-supply mode; must be low-inductance path. |
| 5 (LATCH) | Latch Enable Input | TTL-compatible control: low → latches current output state; high → transparent mode. |
| 6 (GND) | Digital Ground | Return path for VDD and output stage; isolated from analog ground (VEE) in split-supply configs. |
| 7 (OUT) | Comparator Output | TTL logic-level output with internal pullup; drives up to four LS-TTL loads directly. |
| 8 (VDD) | Positive Digital Supply | +5V only; powers latch logic and output buffer; separate decoupling required from VCC. |
Key Features
| Feature | Design Value |
|---|---|
| 7ns propagation delay | Enables precise edge detection in high-speed data sampling and clock recovery circuits. |
| Rail-inclusive input range | Supports zero-crossing detection and ground-referenced thresholds without level-shifting circuitry. |
| Integrated latch with TTL inputs | Eliminates external flip-flop requirements in synchronized comparator applications like ADC front-ends. |
| 9mW power consumption | Reduces board-level heat density and extends battery life in portable instrumentation and test gear. |
| Separate analog/digital supplies | Minimizes digital switching noise coupling into analog input paths-critical for precision thresholding. |
Applications
| High-Speed A/D Converters | Line Receivers |
|---|---|
|
Use Scenario: Sampling analog input at >50MSPS using flash or pipeline ADC architecture. IC Role / Device Role / Timing Role: Threshold comparator generating decision bits for ADC encoder stage. Use Value: 7ns delay ensures <20ps timing uncertainty across channels, preserving ENOB in multi-bit conversion. |
Use Scenario: Recovering digital data from noisy differential transmission lines (e.g., RS-422, LVDS stubs). IC Role / Device Role / Timing Role: High-speed signal squaring and noise-immune level restoration. Use Value: Rail-to-rail input range accommodates degraded signal amplitudes; latch holds valid data during clock domain crossing. |
| Threshold Detectors | PWM Circuits |
|
Use Scenario: Monitoring sensor outputs (e.g., current sense, temperature) against programmable trip points. IC Role / Device Role / Timing Role: Precision voltage discriminator with stable hysteresis-free switching. Use Value: Low 7.5mV max input offset ensures accurate trip-point accuracy across −40°C to +85°C. |
Use Scenario: Generating fixed-frequency PWM waveforms with adjustable duty cycle via ramp-compare method. IC Role / Device Role / Timing Role: High-speed comparator comparing sawtooth ramp to control voltage. Use Value: Fast 7ns response enables clean PWM edges up to 100MHz carrier frequency without jitter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX903ESA | No latch function; 12ns propagation delay; higher 15mW power; same SOT23-8 package. | Used where latch synchronization is unnecessary and lower cost is prioritized over speed/power. | Select MAX903ESA only if system timing budget allows ≥12ns delay and latch functionality is omitted. |
| LM360M | 7ns delay but no latch; ±15V analog supply range; 25mW power; SO-8 package; no TTL latch inputs. | Suitable for wide-supply industrial sensors but lacks digital interface compatibility for embedded microcontroller sync. | Choose LM360M for high-voltage analog systems requiring >±10V operation, not for TTL-synchronized digital capture. |
Compared with MAX9203EKA-T, MAX903ESA trades speed and latch capability for cost reduction, while LM360M offers extended voltage range at the expense of power efficiency and digital integration-neither is pin-compatible or drop-in replaceable due to differing pin functions and latch presence.
Availability
MAX9203EKA-T is available at Aetrix Electronics and suitable for high-speed A/D converters, line receivers, and PWM circuits requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial and test equipment programs.
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) designs precision analog, mixed-signal, and high-speed ICs for industrial, communications, and computing applications.
The MAX920x family targets high-speed data acquisition and signal conditioning, delivering low-power, fast-response comparators with integrated digital control for embedded timing-critical systems.
FAQ
What is the maximum analog supply voltage range supported by the MAX9203EKA-T?
The MAX9203EKA-T supports an analog supply voltage range of VCC − VEE = +4.75V to +10.5V, allowing configurations such as ±5V (VEE = −5V, VCC = +5V) or single +5V-to-+10V with VEE grounded. This flexibility enables use in both split-rail and single-supply systems without external level-shifting components, and the MAX9203EKA-T maintains full specification compliance across this range.
Does the MAX9203EKA-T require separate ground planes for analog and digital sections?
Yes-the MAX9203EKA-T uses distinct VEE (analog substrate/ground reference) and GND (digital ground) terminals. For optimal noise immunity, VEE should connect to a quiet analog ground plane, while GND ties to the digital return path. This separation prevents digital switching transients from modulating the comparator's input offset or propagation delay, and the MAX9203EKA-T's specified CMRR and PSRR assume proper grounding per the datasheet layout guidelines.
Can the MAX9203EKA-T operate with only a +5V supply, and how are the supplies connected?
Yes-the MAX9203EKA-T supports single +5V operation: tie VEE to GND, apply +5V to VCC and VDD, and route IN+, IN−, LATCH, and OUT accordingly. In this configuration, the input common-mode range extends from 0V to +2.75V, enabling ground-referenced threshold detection. All electrical specs-including 7ns propagation delay and 9mW power-are guaranteed under this condition, and the MAX9203EKA-T remains fully functional without split supplies.
What is the purpose of the LATCH pin on the MAX9203EKA-T, and how does it affect output behavior?
The LATCH pin (Pin 5) controls output transparency: when high, the MAX9203EKA-T output follows input changes in real time; when driven low, the output freezes in its current logic state until LATCH returns high. This enables synchronous sampling-e.g., capturing a transient event at a precise clock edge. The MAX9203EKA-T specifies strict timing (tS = 2ns, tN = 1ns) to ensure reliable capture without metastability, making it suitable for gated data acquisition systems.
Is the MAX9203EKA-T pin-compatible with other devices in the MAX920x family?
No-the MAX9203EKA-T (SOT23-8) has a unique pinout versus MAX9201 (16-pin TSSOP) and MAX9202 (14-pin TSSOP). Even within the SOT23-8 footprint, no other MAX920x variant shares identical pin assignments; for example, MAX9203EKA-T places LATCH on Pin 5, whereas MAX9203ESA (SO-8) assigns LATCH to Pin 4. Therefore, PCB layout must be designed specifically for MAX9203EKA-T, and the MAX9203EKA-T cannot serve as a drop-in replacement for any other member of the family.
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:
- Obsolete
- 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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