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Analog Devices Inc./Maxim Integrated MAX902ESD+
- Part No.:
- MAX902ESD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX902ESD+.pdf
- Description:
- IC COMPARATOR 2 W/LATCH 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,815
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Product details
Overview
MAX902ESD+ from Maxim Integrated is a high-speed, low-power quad voltage comparator with differential analog inputs, TTL-compatible outputs, independent latch inputs per channel, and separate analog/digital supply rails (VCC/VEE and VDD). It delivers 8ns typical propagation delay at 5mV overdrive, consumes 18mW per comparator at +5V, and supports input common-mode range extending to the negative rail - enabling ground-sensing operation in single-supply systems. It is used in high-speed A/D converters, line receivers, and PWM circuits.
For engineers reviewing the MAX902ESD+ datasheet, MAX902ESD+ pinout, MAX902ESD+ application, or MAX902ESD+ equivalent, key selection criteria include latch-enabled output hold capability, ±5V or +5V-to-+10V analog supply flexibility, TTL-level timing compatibility, and -40°C to +85°C industrial temperature rating.
Technical Context
The MAX902ESD+ integrates four independent comparators sharing dual supply domains: analog supplies (VCC = +5V to +10V, VEE = negative rail) and digital supply (VDD = +5V only). Each channel features TTL-compatible latch inputs that freeze output states on logic-low assertion - a function absent in MAX901 but present in MAX900/MAX902/MAX903.
Its internal architecture enables fast response (tpd+ = tpd− = 8ns typ at 5mV overdrive, CL = 15pF) with tight inter-channel propagation skew (∆tpd ≤ 2.0ns), while maintaining input offset voltage ≤ 3mV and CMRR ≥ 80 µV/V across full temperature range. Latch timing parameters (ts = 2ns, th = 1ns, tpw(D) = 10ns) are specified for reliable high-speed sampling control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 8ns typical at 5mV overdrive - enables sub-125MHz sampling decision cycles in A/D front-ends. |
| Power Dissipation | 18mW per comparator at +5V - allows thermal management in dense quad-channel layouts without forced cooling. |
| Input Common-Mode Range | Extends to VEE − 0.1V - supports ground-referenced sensing when VEE = 0V in single-supply configurations. |
| Latch Input Compatibility | TTL-level (VLH = 1.4–2.0V, VLL = 0.8–1.4V) - interfaces directly with standard logic without level-shifting. |
| Supply Flexibility | Analog: +5V to +10V (VCC) or ±5V (VCC/VEE); Digital: fixed +5V (VDD) - decouples noise-sensitive analog paths from digital switching. |
| Operating Temperature | -40°C to +85°C - qualified for industrial embedded control and instrumentation environments. |
| Output Drive | VOH = 2.4V min at 1mA source; VOL = 0.4V max at 8mA sink - meets TTL fan-out of four with margin. |
Pinout & Package
MAX902ESD+ is housed in a 14-pin narrow SO (Small Outline) package with gull-wing leads, JEDEC MS-012AC compliant, 150 mil body width, and RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8, 9, 16 | IN− (A, B, C, D) | Negative input terminals for each of four comparator channels - differential pair inputs referenced to VEE substrate. |
| 2, 7, 10, 15 | IN+ (A, B, C, D) | Positive input terminals for each channel - accept signals up to VCC + 0.2V without damage. |
| 3 | GND | Digital ground reference shared by latch and output stages - must be tied to system DGND. |
| 4, 5, 12, 13 | OUT (A, B, C, D) | TTL-compatible open-collector outputs with internal pull-ups - drive logic loads directly. |
| 6 | VEE | Negative analog supply and substrate connection - sets lower bound of input common-mode range. |
| 11 | VDD | +5V digital supply for latch circuitry and output drivers - must be decoupled separately from analog rails. |
| 14 | VCC | Positive analog supply (up to +10V) - powers comparator core and defines upper input voltage limit. |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent comparators with per-channel latches | Enables synchronized sampling across four signal paths using a single global latch enable or individual controls. |
| 8ns propagation delay with 2ns max inter-channel skew | Supports time-critical applications like multi-channel ADC triggering where phase alignment < 2ns is required. |
| Separate analog (VCC/VEE) and digital (VDD) supplies | Prevents digital switching noise from modulating analog threshold accuracy - critical in mixed-signal measurement systems. |
| Input range includes negative rail (VEE − 0.1V) | Eliminates need for level-shifting circuitry when monitoring bipolar or ground-referenced sensor outputs. |
| TTL-compatible outputs and latch inputs | Direct interface with legacy microcontrollers, FPGAs, and logic families without external buffers or translators. |
Applications
| High-Speed A/D Converters | Line Receivers |
|---|---|
Use Scenario: Threshold comparison in flash or pipeline ADC front-end sampling stages. IC Role / Device Role / Timing Role: Quad comparator provides simultaneous decision points for multi-bit quantization with latch synchronization. Use Value: 8ns propagation delay ensures accurate sampling at >100MSPS rates; latch inputs allow precise hold timing aligned to clock edges. |
Use Scenario: Differential signal recovery in RS-422/RS-485 receiver stages. IC Role / Device Role / Timing Role: Comparator converts differential bus voltage into clean TTL logic levels with noise immunity. Use Value: Input common-mode range including VEE supports biased bus termination schemes; TTL outputs drive downstream logic directly. |
| PWM Circuits | Threshold Detectors |
Use Scenario: Real-time duty-cycle comparison in motor control or SMPS feedback loops. IC Role / Device Role / Timing Role: Compares ramp or sawtooth waveform against control voltage to generate PWM edge transitions. Use Value: Low 18mW/channel dissipation minimizes thermal drift in closed-loop timing; latch capability freezes error flags during fault handling. |
Use Scenario: Overvoltage/undervoltage detection in power supply supervision. IC Role / Device Role / Timing Role: Monitors DC rails against precision reference thresholds and asserts fault flags. Use Value: Input offset voltage ≤ 3mV ensures detection accuracy within ±5mV; -40°C to +85°C rating guarantees reliability across environmental extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad voltage comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9202ESD+ | Pin-for-pin compatible; same speed (8ns typ), half power (9mW/comparator), improved PSRR (≥150 µV/V). | Lower quiescent current enables battery-powered or thermally constrained designs; identical latch and supply architecture. | Select MAX9202ESD+ for new designs requiring drop-in replacement with reduced power and enhanced supply noise rejection. |
| LM339MTX/NOPB | Quad comparator without latches; 1.3µs propagation delay; rail-to-rail input; no separate VDD - single-supply only. | Suitable for low-speed, cost-sensitive applications where latch functionality and nanosecond timing are unnecessary. | Choose LM339MTX/NOPB only when speed and latch control are not required - not a functional substitute for MAX902ESD+ in high-speed sampling roles. |
Compared with MAX902ESD+, MAX9202ESD+ offers identical pinout and timing with halved power consumption and better PSRR, while LM339MTX/NOPB lacks latches, is 160× slower, and cannot support split-supply or independent digital/analog domains - making it unsuitable for timing-critical or mixed-signal applications.
Availability
MAX902ESD+ is available at Aetrix Electronics and suitable for high-speed data sampling, industrial line receivers, and PWM-based motor control systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX902ESD+ 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, low-power voltage comparison in data acquisition and real-time signal conditioning systems - emphasizing nanosecond timing precision, latch-controlled sampling, and flexible dual-supply operation.
FAQ
What is the operating temperature range for MAX902ESD+?
The MAX902ESD+ is rated for operation from -40°C to +85°C, meeting industrial-grade environmental requirements. This specification is confirmed in the Ordering Information table and Electrical Characteristics sections of the official datasheet, where all AC/DC parameters are guaranteed across this full range under defined supply and load conditions.
Does MAX902ESD+ support single-supply operation?
Yes, MAX902ESD+ supports single-supply operation with VEE grounded and VCC set between +5V and +10V. Its input common-mode range extends to VEE − 0.1V, enabling ground-referenced input sensing. The digital supply VDD remains fixed at +5V regardless of analog rail configuration.
What is the function of the latch inputs on MAX902ESD+?
Each of the four comparator channels in MAX902ESD+ has an independent TTL-compatible latch input (pins 4, 5, 12, 13). When driven low, the corresponding output holds its state; when high, the comparator operates transparently. This enables synchronized sampling and glitch-free capture in high-speed data acquisition systems.
Is MAX902ESD+ pin-compatible with other devices in the MAX900–MAX903 family?
MAX902ESD+ uses a 14-pin narrow SO package and shares pinout compatibility with MAX902CPD, MAX902CSD, and MAX902EPD. It is not pin-compatible with MAX900 (20-pin), MAX901 (16-pin), or MAX903 (8-pin) due to differing channel count and package size - only MAX902 variants share identical pin assignments.
What are the absolute maximum ratings for MAX902ESD+ analog and digital supplies?
Per the Absolute Maximum Ratings table, MAX902ESD+ allows analog supply voltage (VCC to VEE) up to +12V, digital supply (VDD to GND) up to +7V, and differential input voltage from (VEE − 0.2V) to (VCC + 0.2V). Exceeding these stresses may cause permanent damage and is not supported under any operating condition.
MAX902ESD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- with Latch
- Number of Elements:
- 2
- Output Type:
- TTL
- Voltage - Supply, Single/Dual (±):
- 5V ~ 10V, ±2.5V ~ 5V
- :
- 4mV @ ±5V
- Voltage - Input Offset (Max):
- 10µA @ ±5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 8mA, 6mA, 3mA
- Current - Quiescent (Max):
- 82.5dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
MAX902ESD+ FAQ
1.How can I place an order for MAX902ESD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX902ESD+ 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 MAX902ESD+ reliable?
The price and inventory of MAX902ESD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX902ESD+ is usually 5 days.
3.What payment methods are accepted for MAX902ESD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX902ESD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX902ESD+?
MAX902ESD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX902ESD+ 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 MAX902ESD+?
For technical support, including MAX902ESD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX902ESD+ requirements.
6.How does Aetrix verify that MAX902ESD+ is sourced from the original manufacturer or authorized distributors?
All MAX902ESD+ 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 MAX902ESD+ meets industry standards.
7.What is the process for return or replacement of MAX902ESD+?
All MAX902ESD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX902ESD+, 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 MAX902ESD+ part is unused and in its original packaging.
Return procedure for MAX902ESD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX902ESD+ Tags
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LM2903DR
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LM339DR
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LM339PWR
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LM393DT
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LM2901PWR
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LM2903DT
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LM393DR
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LM239DR
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LM339APWR
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LM2903P
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LM393ADR
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NCX2200GMAZ
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