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Analog Devices Inc./Maxim Integrated MAX903ESA-TG068
- Part No.:
- MAX903ESA-TG068
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- -
- Datasheet:
-
MAX903ESA-TG068.pdf
- Description:
- LOW-POWER VOLTAGE COMPARATOR
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
MAX903ESA-TG068 from Maxim Integrated is a high-speed, low-power quad voltage comparator IC with differential analog inputs and TTL-compatible outputs featuring active internal pull-ups. It delivers 8ns typical propagation delay at 5mV overdrive, consumes 18mW per comparator at +5V, supports ±5V or +5V to +10V analog supplies with input common-mode range extending to the negative rail, and includes independent TTL latch inputs for output hold functionality - ideal for high-speed A/D converter front-ends and line receiver circuits.
For engineers reviewing the MAX903ESA-TG068 datasheet, MAX903ESA-TG068 pinout, MAX903ESA-TG068 application, or MAX903ESA-TG068 equivalent, key selection considerations include its 8ns propagation delay, latch-enabled output retention, dual-supply flexibility (separate VCC/VEE analog and VDD digital), -40°C to +85°C operating range, and SO-8 package compatibility with industry-standard PCB footprints.
Technical Context
The MAX903ESA-TG068 implements four independent high-gain comparators with fully differential inputs, each capable of operation with analog supplies ranging from ±5V or +5V to +10V (VEE grounded), while requiring a fixed +5V digital supply (VDD). Its input stage supports common-mode voltages down to VEE − 0.1V, enabling ground-sensing in single-supply configurations.
Each comparator features TTL-compatible output drivers with 2.4V minimum VOH at 1mA source current and 0.4V maximum VOL at 8mA sink current, plus dedicated TTL latch inputs that freeze output states on logic-low assertion - a function absent in the MAX901 variant but integral to the MAX903's timing-critical sampling applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 8ns typical at 5mV overdrive - enables sub-125MHz sampling rate in A/D interfaces |
| Power Dissipation | 18mW per comparator at +5V - supports thermally constrained embedded designs |
| Analog Supply Range | +5V to +10V (VEE = GND) or ±5V - allows flexible biasing in mixed-signal systems |
| Input Common-Mode Range | Extends to VEE − 0.1V - permits ground-referenced sensing without level-shifting |
| Output Logic Type | TTL-compatible with active pull-up - drives standard LS-TTL loads directly (fan-out = 4) |
| Latch Input Compatibility | TTL-level (VLH = 1.4–2.0V, VLL = 0.8–1.4V) - integrates seamlessly with FPGA/CPLD control signals |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade environmental reliability |
Pinout & Package
MAX903ESA-TG068 is housed in an 8-pin SO (Small Outline) package with gull-wing leads, JEDEC MS-012AC compliant, 150 mil body width, and 1.27mm pitch. Pin 1 is marked by a beveled corner or dot; device orientation follows standard SO-8 top-view convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Positive analog supply input (+5V to +10V); decoupling required near pin |
| 2 | IN+ | Non-inverting input of Channel A; accepts common-mode down to VEE − 0.1V |
| 3 | IN− | Inverting input of Channel A; differential pair with IN+ defines switching threshold |
| 4 | VEE | Negative analog supply and substrate connection (−5V or GND); must be low-inductance |
| 5 | LATCH | TTL-compatible latch enable for Channel A; logic low holds output state |
| 6 | GND | Digital ground reference; separate from analog ground in split-supply layouts |
| 7 | OUT | TTL-output of Channel A; 2.4V min VOH / 0.4V max VOL into specified loads |
| 8 | VDD | +5V digital supply; powers output stage and latch circuitry; requires local decoupling |
Key Features
| Feature | Design Value |
|---|---|
| 8ns propagation delay | Enables precise timing capture in >100MHz sampling circuits without added latency compensation |
| Independent latch inputs | Allows asynchronous freezing of comparator outputs for synchronized data acquisition across multiple channels |
| Single- or split-supply operation | Supports both +5V-only and ±5V configurations - eliminates need for external level shifters in ground-sensing apps |
| TTL-compatible outputs | Drives standard LS-TTL loads directly without external pull-ups or buffers, reducing BOM count |
| Low 18mW/comparator power | Reduces thermal load in dense PCB layouts and extends battery life in portable instrumentation |
Applications
| High-Speed A/D Converters | Line Receivers |
|---|---|
|
Use Scenario: Front-end threshold detection in flash or pipeline ADC architectures requiring sub-10ns decision timing. IC Role / Device Role / Timing Role: Voltage comparator providing fast, deterministic decision edges to clocked sample-and-hold or encoder logic. Use Value: 8ns propagation delay ensures minimal aperture jitter and maintains effective resolution at >100MSPS sampling rates. |
Use Scenario: Differential signal recovery in RS-422/RS-485 receivers where noise immunity and fast edge detection are critical. IC Role / Device Role / Timing Role: High-speed comparator converting differential bus voltage into clean TTL logic levels for controller input. Use Value: Input common-mode range including VEE allows direct interface to terminated transmission lines referenced to system ground. |
| Threshold Detectors | PWM Circuits |
|
Use Scenario: Real-time overvoltage/undervoltage monitoring in DC power supplies or battery management systems. IC Role / Device Role / Timing Role: Precision comparator comparing sensed rail voltage against stable reference to trigger fault latching. Use Value: 1mV typical input offset voltage and 250µV/V CMRR ensure accurate trip-point stability across temperature and supply variation. |
Use Scenario: Edge-aligned PWM generation in motor control or LED dimming where duty-cycle accuracy depends on comparator timing precision. IC Role / Device Role / Timing Role: Comparator comparing sawtooth/ramp waveform against control voltage to generate PWM edges. Use Value: Matched tpd+ and tpd− (≤2ns skew) ensures symmetrical rise/fall timing, minimizing duty-cycle distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed voltage comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9203ESA+ | Pin-for-pin compatible, same 8ns propagation delay, but 9mW/comparator (50% lower power) | Same functional scope; optimized for battery-powered or thermally constrained systems | Select MAX9203ESA+ when lower power dissipation is prioritized and legacy MAX903 design migration is feasible |
| LM319M/NOPB | Slower (80ns propagation delay), higher power (40mW), no latch inputs, wider supply range (±15V) | Suitable for general-purpose, non-timing-critical comparator roles where latch control is unnecessary | Choose LM319M/NOPB only for cost-sensitive, non-high-speed applications where 8ns timing is not required |
Compared with MAX903ESA-TG068, the MAX9203ESA+ offers identical speed and pinout with half the power consumption, while the LM319M/NOPB trades speed and latch capability for broader supply tolerance and lower unit cost - making the MAX903ESA-TG068 optimal for legacy high-speed sampling designs where latch synchronization is essential.
Availability
MAX903ESA-TG068 is available at Aetrix Electronics and suitable for high-speed A/D converters, line receivers, threshold detectors, and PWM circuits requiring stable component supply across industrial temperature ranges and long-lifecycle programs.
Supply support for MAX903ESA-TG068 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 MAX900–MAX903 family was designed specifically for high-speed data acquisition and real-time signal discrimination, targeting applications demanding sub-10ns propagation delay, latch-controlled output retention, and robust operation across dual or single analog supplies.
FAQ
What is the operating temperature range for MAX903ESA-TG068?
The MAX903ESA-TG068 is rated for operation from -40°C to +85°C, meeting industrial-grade environmental requirements. This range is confirmed in the ordering information table for the MAX903ESA variant and applies identically to the MAX903ESA-TG068 marking, which denotes the same SO-8 package and temperature grade. The device maintains specified propagation delay, offset voltage, and output drive performance across this full range.
Does MAX903ESA-TG068 support single-supply operation?
Yes, MAX903ESA-TG068 supports true single-supply operation with VEE tied to ground and VCC supplied from +5V to +10V. Its input common-mode range extends to VEE − 0.1V, enabling ground-referenced input signals without external level shifting. The digital supply VDD remains fixed at +5V regardless of analog supply configuration.
What is the purpose of the LATCH pin on MAX903ESA-TG068?
The LATCH pin on MAX903ESA-TG068 enables output state retention: when driven logic-low, it freezes the comparator output at its current TTL level, independent of further input changes. This function is TTL-compatible (VLH = 1.4–2.0V, VLL = 0.8–1.4V) and is essential for synchronized sampling in multi-channel systems. The MAX901 variant lacks this feature entirely.
Is MAX903ESA-TG068 pin-compatible with newer Maxim comparators?
Yes, MAX903ESA-TG068 is pin-compatible with the MAX9203ESA+, a direct replacement offering identical 8ns propagation delay and SO-8 footprint but with 50% lower power dissipation (9mW/comparator). No PCB layout changes are required for migration, though VDD decoupling and thermal validation are recommended due to differing power density.
What are the absolute maximum ratings for MAX903ESA-TG068 analog supplies?
The absolute maximum analog supply rating for MAX903ESA-TG068 is +12V between VCC and VEE. For ±5V operation, VCC = +5V and VEE = −5V; for single-supply, VEE = 0V and VCC ≤ +10V is recommended for reliable operation. Exceeding +12V differential or applying >+7V on VDD risks permanent damage per the Absolute Maximum Ratings table.
MAX903ESA-TG068 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- -
- :
- -
MAX903ESA-TG068 FAQ
1.How can I place an order for MAX903ESA-TG068 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX903ESA-TG068 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 MAX903ESA-TG068 reliable?
The price and inventory of MAX903ESA-TG068 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX903ESA-TG068 is usually 5 days.
3.What payment methods are accepted for MAX903ESA-TG068?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX903ESA-TG068 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX903ESA-TG068?
MAX903ESA-TG068 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX903ESA-TG068 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 MAX903ESA-TG068?
For technical support, including MAX903ESA-TG068 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX903ESA-TG068 requirements.
6.How does Aetrix verify that MAX903ESA-TG068 is sourced from the original manufacturer or authorized distributors?
All MAX903ESA-TG068 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 MAX903ESA-TG068 meets industry standards.
7.What is the process for return or replacement of MAX903ESA-TG068?
All MAX903ESA-TG068 units undergo pre-shipment inspection (PSI). If there is an issue with MAX903ESA-TG068, 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 MAX903ESA-TG068 part is unused and in its original packaging.
Return procedure for MAX903ESA-TG068:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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