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Analog Devices Inc./Maxim Integrated MAX903CSA+TG035
- Part No.:
- MAX903CSA+TG035
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- -
- Datasheet:
-
MAX903CSA+TG035.pdf
- Description:
- INTEGRATED CIRCUIT
- Quantity:
- Payment:
- Shipping:
Inventory:4,541
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Product details
Overview
MAX903CSA+TG035 from Maxim Integrated is a high-speed, low-power, single-channel voltage comparator with differential analog inputs and TTL-compatible output. It delivers 8ns typical propagation delay at 5mV overdrive, consumes 18mW at +5V supply, supports ±5V or +5V-to-+10V analog supplies with negative-rail input sensing, and features a TTL-compatible latch input for output hold functionality.
For engineers reviewing the MAX903CSA+TG035 datasheet, MAX903CSA+TG035 pinout, MAX903CSA+TG035 application, or MAX903CSA+TG035 equivalent, key selection considerations include latch-enabled output retention, rail-to-rail input common-mode range including VEE, TTL-level timing compatibility, and suitability for high-speed sampling in A/D converter front-ends and line receiver circuits.
Technical Context
The MAX903CSA+TG035 implements a fully differential high-gain comparator core optimized for fast transition detection with minimal input overdrive. Its internal architecture separates analog (VCC/VEE) and digital (VDD) power domains to suppress supply noise coupling, and integrates active pull-up TTL output stages capable of driving four LS-TTL loads.
Latch control operates asynchronously: when LATCH is driven low, the output state freezes at the instant of the falling edge; when high, the comparator responds transparently to input changes. Input common-mode range extends to VEE − 0.1V, enabling ground-referenced sensing in single-supply configurations with VEE = GND.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 8ns typical at 5mV overdrive - enables sub-125MHz sampling decision timing in A/D interfaces. |
| Power Dissipation | 18mW per comparator at +5V - supports thermally constrained PCB layouts in dense mixed-signal systems. |
| Analog Supply Range | +5V to +10V (VEE = GND) or ±5V - allows flexible biasing for signal conditioning across industrial and test equipment. |
| Input Common-Mode Range | VEE − 0.1V to VCC − 2.25V - permits direct sensing of signals referenced to negative rail or ground. |
| Output Type | TTL-compatible with active pull-up - ensures interoperability with legacy logic families without external resistors. |
| Latch Input Compatibility | TTL-level (VLH = 1.4–2.0V, VLL = 0.8–1.4V) - enables direct interface to microcontroller GPIO or FPGA control lines. |
| Input Offset Voltage | 1–3mV over full temperature range - maintains <10mV threshold accuracy in precision level-detection applications. |
Pinout & Package
MAX903CSA+TG035 is housed in an 8-pin SO (Small Outline) package with gull-wing leads, compliant with JEDEC MS-012AC, body size 4.9mm × 3.9mm, lead pitch 1.27mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Positive analog supply input (+5V to +10V); decoupling required within 5mm for stable high-speed operation. |
| 2 | IN+ | Non-inverting analog input; accepts common-mode voltages down to VEE − 0.1V. |
| 3 | IN− | Inverting analog input; differential pair with IN+ defines switching threshold. |
| 4 | VEE | Negative analog supply and substrate connection; must be tied to system ground or −5V for split-rail operation. |
| 5 | LATCH | Asynchronous TTL latch enable; low = hold current output state, high = transparent mode. |
| 6 | GND | Digital ground reference; separate from analog ground in split-supply designs to minimize noise coupling. |
| 7 | OUT | TTL-compatible output with active pull-up; sinks up to 8mA, sources ~1mA, compatible with LS-TTL fan-out of 4. |
| 8 | VDD | Fixed +5V digital supply; powers output stage and latch logic; not adjustable. |
Key Features
| Feature | Design Value |
|---|---|
| 8ns propagation delay | Enables real-time decision making in high-speed data acquisition systems operating up to 125Msps. |
| Separate analog/digital supplies | Isolates sensitive analog comparators from noisy digital switching domains via dedicated VCC/VEE and VDD rails. |
| Rail-inclusive input range | Supports ground-sensing in single-supply +5V systems without level-shifting circuitry or bias networks. |
| TTL latch input | Allows synchronous capture of transient events using external timing control, eliminating need for external D-latches. |
| 18mW power consumption | Reduces thermal load in multi-comparator arrays and portable instrumentation where power budget is constrained. |
Applications
| High-Speed A/D Converters | Line Receivers |
|---|---|
|
Use Scenario: Front-end threshold comparison in flash or pipeline ADC architectures requiring sub-10ns decision latency. IC Role / Device Role / Timing Role: High-speed voltage discriminator that converts analog input to digital logic level prior to encoding. Use Value: 8ns propagation delay ensures accurate sampling window alignment with clock edges, minimizing aperture uncertainty. |
Use Scenario: Differential signal recovery in RS-422/RS-485 receivers or high-noise industrial communication links. IC Role / Device Role / Timing Role: Fast, rail-to-rail input comparator detecting logic transitions on twisted-pair transmission lines. Use Value: Input common-mode range extending to VEE − 0.1V allows direct interfacing to biased differential bus voltages without AC coupling. |
| Threshold Detectors | PWM Circuits |
|
Use Scenario: Precision overvoltage/undervoltage monitoring in DC power supplies and battery management systems. IC Role / Device Role / Timing Role: Reference-comparator node generating fault flags when sensed voltage crosses programmable thresholds. Use Value: 1–3mV input offset voltage ensures detection accuracy better than ±10mV across −40°C to +85°C operating range. |
Use Scenario: Edge-triggered PWM generation in motor control or LED dimming systems using triangle-wave comparison. IC Role / Device Role / Timing Role: Comparator comparing modulating signal against ramp waveform to produce duty-cycle-controlled square wave. Use Value: Latch input enables synchronized PWM edge blanking during critical switching intervals to suppress noise-induced false triggers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9203ESA+ | Pin-for-pin compatible, same 8ns propagation delay, but 9mW power dissipation at +5V - half the quiescent power of MAX903CSA+TG035. | Preferred for new designs requiring lower thermal load and extended battery life; retains identical latch and supply flexibility. | Select MAX9203ESA+ when upgrading legacy MAX903-based designs for improved efficiency without layout change. |
| LM311DR | Slower (115ns propagation delay), no integrated latch, single-supply only (no ±5V support), higher input offset (±7mV). | Suitable for cost-sensitive, non-critical timing applications where speed and latch function are not required. | Choose LM311DR only for low-frequency threshold detection where 8ns timing and latch hold are unnecessary. |
Compared with MAX903CSA+TG035, MAX9203ESA+ offers identical timing and latch functionality at half the power, while LM311DR trades speed, latch capability, and supply flexibility for cost reduction in less demanding applications.
Availability
MAX903CSA+TG035 is available at Aetrix Electronics and suitable for high-speed A/D converters, line receivers, threshold detectors, and PWM circuits requiring stable component supply throughout product lifecycles.
Supply support for MAX903CSA+TG035 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 MAX900–MAX903 family was designed specifically for high-speed, low-power voltage discrimination in data-acquisition and real-time signal-processing systems where nanosecond-level timing and latch-controlled event capture are essential.
FAQ
What is the operating temperature range for MAX903CSA+TG035?
The MAX903CSA+TG035 is rated for 0°C to +70°C ambient operation, as indicated by the 'C' grade suffix in its ordering code. This commercial-grade specification ensures reliable performance in office, laboratory, and non-extreme industrial environments where thermal management is controlled. The device's electrical characteristics-including propagation delay, input offset voltage, and power consumption-are guaranteed across this full range.
Does MAX903CSA+TG035 support single-supply operation?
Yes, MAX903CSA+TG035 supports true single-supply operation with VEE tied to ground and VCC set between +5V and +10V. Its input common-mode range extends to VEE − 0.1V, allowing ground-referenced input signals without external biasing. The TTL output remains functional with VDD = +5V, making it suitable for +5V-only systems such as legacy industrial controllers and test equipment.
What is the purpose of the LATCH pin on MAX903CSA+TG035?
The LATCH pin on MAX903CSA+TG035 provides asynchronous output hold functionality: driving it low freezes the current output state regardless of subsequent input changes, and driving it high restores transparent comparator behavior. This enables precise timing capture of transient events-such as pulse edges or fault conditions-in systems where external synchronization is required, eliminating the need for discrete latch ICs in the signal path.
Can MAX903CSA+TG035 be used with ±5V analog supplies?
Yes, MAX903CSA+TG035 is fully specified for ±5V analog operation (VCC = +5V, VEE = −5V), with input common-mode range spanning −5.1V to +2.75V and guaranteed performance across the full temperature range. This dual-supply configuration enhances noise immunity in mixed-signal systems and supports bipolar signal conditioning-for example, in audio peak detectors or sensor interfaces handling both positive and negative excursions.
Is MAX903CSA+TG035 recommended for new designs?
No-MAX903CSA+TG035 is marked "Not Recommended for New Designs" due to discontinuation of its underlying wafer process. While fully supported for existing designs and available through Aetrix Electronics' legacy inventory, Maxim recommends the pin-compatible MAX9203ESA+ for new projects, offering identical speed and latch functionality with 50% lower power dissipation and ongoing production support.
MAX903CSA+TG035 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- -
- Number of Elements:
- -
- Output Type:
- -
- Voltage - Supply, Single/Dual (±):
- -
- :
- -
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- -
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- :
- -
MAX903CSA+TG035 FAQ
1.How can I place an order for MAX903CSA+TG035 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX903CSA+TG035 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 MAX903CSA+TG035 reliable?
The price and inventory of MAX903CSA+TG035 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX903CSA+TG035 is usually 5 days.
3.What payment methods are accepted for MAX903CSA+TG035?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX903CSA+TG035 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX903CSA+TG035?
MAX903CSA+TG035 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX903CSA+TG035 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 MAX903CSA+TG035?
For technical support, including MAX903CSA+TG035 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX903CSA+TG035 requirements.
6.How does Aetrix verify that MAX903CSA+TG035 is sourced from the original manufacturer or authorized distributors?
All MAX903CSA+TG035 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 MAX903CSA+TG035 meets industry standards.
7.What is the process for return or replacement of MAX903CSA+TG035?
All MAX903CSA+TG035 units undergo pre-shipment inspection (PSI). If there is an issue with MAX903CSA+TG035, 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 MAX903CSA+TG035 part is unused and in its original packaging.
Return procedure for MAX903CSA+TG035:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX903CSA+TG035 Tags
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LM393DR
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LM239DR
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LM2903P
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