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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:2,709
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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 operation over –40°C to +85°C. It delivers 8ns typical propagation delay at 5mV overdrive, consumes 18mW per comparator at +5V, supports split (±5V) or single (+5V to +10V) analog supplies, and features rail-to-rail input common-mode range including the negative rail - 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, dual-supply isolation (analog VCC/VEE + digital VDD), TTL-level timing compatibility, and thermal stability across industrial temperature range - critical for precision sampling and real-time threshold detection.
Technical Context
The MAX902ESD implements four independent high-gain comparators with separate analog (VCC/VEE) and digital (VDD) supply domains, enabling noise-isolated mixed-signal operation. Each channel includes a dedicated TTL-compatible latch input that freezes output state on logic-low assertion, with guaranteed setup/hold times of 2ns and 1ns respectively.
Its input stage accepts common-mode voltages from VEE − 0.1V to VCC − 2.25V, supporting ground-sensing in single-supply configurations. Propagation delay symmetry (Δtpd ≤ 2ns max between channels) and 5mV overdrive test condition ensure consistent timing behavior across all four comparators under defined load (CL = 15pF, IO = 2mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 8ns typ (5mV overdrive, CL = 15pF) - enables sub-125MHz sampling decision cycles |
| Power Dissipation | 18mW per comparator at +5V - allows dense quad-channel integration without thermal derating |
| Input Common-Mode Range | VEE − 0.1V to VCC − 2.25V - supports ground-referenced sensing with single +5V analog supply |
| Supply Flexibility | Analog: +5V to +10V (VEE = GND) or ±5V; Digital: fixed +5V VDD - decouples analog integrity from digital switching noise |
| Output Compatibility | TTL-logic outputs with active internal pull-ups - drives standard LS-TTL loads (fan-out of 4) without external resistors |
| Input Offset Voltage | 1mV min / 3mV max (full temp range) - ensures <10mV total error budget in 12-bit-equivalent threshold applications |
| Latch Timing | ts = 2ns, th = 1ns, tpw(D) = 10ns - supports synchronous capture of fast transient events with minimal setup overhead |
Pinout & Package
Narrow SO-14 package (14-pin small-outline integrated circuit), RoHS-compliant, surface-mountable with standard 1.27mm pitch.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8, 9, 16 | IN− (A, B, C, D) | Negative input terminals for each of four independent comparator channels |
| 2, 7, 10, 15 | IN+ (A, B, C, D) | Positive input terminals for each comparator channel - differential pair defines decision threshold |
| 3 | GND | Digital ground reference shared by latch and output stages; isolated from analog substrate (VEE) |
| 4, 5, 12, 13 | OUT (A, B, C, D) | TTL-compatible open-collector outputs with internal pull-ups - sink up to 8mA, source limited by pull-up |
| 6 | VEE | Negative analog supply and substrate connection - must be tied to lowest system potential for proper biasing |
| 11 | VDD | +5V digital supply for latch logic and output drivers - independent of analog domain |
| 14 | VCC | Positive analog supply (range +5V to +10V or ±5V) - powers input differential pairs and analog core |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent latched comparators | Four fully isolated channels each with dedicated latch input - enables parallel event capture and hold without cross-talk |
| Rail-inclusive input range | Inputs operate down to VEE − 0.1V - eliminates need for level-shifting when monitoring signals referenced to system ground |
| Split-supply architecture | Separate VCC/VEE (analog) and VDD (digital) pins - prevents digital switching noise from modulating analog threshold accuracy |
| TTL-compatible timing | 8ns propagation delay with 2ns setup/1ns hold for latch control - aligns with standard TTL system clocks and control buses |
| Industrial temperature range | –40°C to +85°C operation - qualified for deployment in motor drives, industrial PLC I/O, and outdoor sensor interfaces |
Applications
| High-Speed A/D Converters | Line Receivers |
|---|---|
|
Use Scenario: Sampling analog input at >10 MSPS using flash or pipeline ADC architectures where comparator decision latency directly limits conversion rate. IC Role / Device Role / Timing Role: Front-end voltage discriminator generating parallel bit decisions synchronized to clock edge via latch inputs. Use Value: 8ns propagation delay and 2ns latch setup time enable reliable sampling at 125MHz effective clock rates without metastability-induced errors. |
Use Scenario: Receiving differential ECL or PECL data streams in telecom backplanes and high-speed serial links. IC Role / Device Role / Timing Role: Threshold detector converting small-swing differential signals into clean TTL logic levels with precise zero-crossing detection. Use Value: Input common-mode range extending to VEE − 0.1V allows direct interface to –5V-referenced sources without AC coupling or bias networks. |
| PWM Motor Control | Threshold Detectors |
|
Use Scenario: Real-time current/voltage feedback comparison in three-phase inverter gate drivers for servo and BLDC motors. IC Role / Device Role / Timing Role: Fast-response comparator latching instantaneous overcurrent events to trigger immediate shutdown signals. Use Value: Independent per-channel latch inputs allow simultaneous capture of peak fault conditions across multiple phases with deterministic timing alignment. |
Use Scenario: Monitoring battery cell voltages or sensor outputs against programmable thresholds in portable medical devices. IC Role / Device Role / Timing Role: Precision voltage window detector using two channels per cell, with latch enabling stable readout during microcontroller ADC acquisition. Use Value: 1mV min input offset voltage ensures ≤10mV total threshold uncertainty over full temperature range - sufficient for 12-bit resolution monitoring. |
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), but 9mW/comparator - half the power of MAX902ESD | Lower thermal footprint in high-density layouts; identical latch and supply architecture | Select when power efficiency or board-level thermal management is prioritized over legacy design continuity |
| LM339MTX/NOPB | Quad comparator without latch inputs; 1.3µs propagation delay; rail-to-rail input; single-supply only | Suitable for non-critical, low-speed threshold detection where timing determinism and latch hold are not required | Select only for cost-sensitive, non-timing-critical applications where 8ns response and per-channel latching are unnecessary |
Compared with MAX902ESD, MAX9202ESD offers identical functionality at half the power, making it ideal for thermally constrained designs, while LM339MTX/NOPB trades speed and latch capability for cost and simplicity in static monitoring roles.
Availability
MAX902ESD is available at Aetrix Electronics and suitable for high-speed data sampling, industrial motor control, and precision threshold detection 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-latency voltage discrimination in mixed-signal systems requiring deterministic timing, latch-controlled sampling, and robust analog/digital supply separation.
FAQ
What is the operating temperature range for the MAX902ESD?
The MAX902ESD is specified for operation from –40°C to +85°C, qualifying it for industrial and automotive under-hood environments. This rating is confirmed in the Ordering Information table and applies to the E-grade version in Narrow SO-14 packaging. All electrical characteristics - including propagation delay, input offset voltage, and latch timing - are guaranteed across this full range.
Does the MAX902ESD support single-supply operation?
Yes, the MAX902ESD supports true single-supply operation: VEE can be tied to ground while VCC operates from +5V to +10V, and VDD remains at +5V. Its input common-mode range extends to VEE − 0.1V, enabling ground-referenced signal detection without level-shifting circuitry - a key feature verified in the Electrical Characteristics tables and Applications Information section.
How many latch inputs does the MAX902ESD have, and what is their function?
The MAX902ESD has four independent TTL-compatible latch inputs (pins 4, 5, 12, 13), one per comparator channel. When driven low, each latch freezes its corresponding output state; when high, the comparator operates transparently. Setup time is 2ns and hold time is 1ns - values explicitly specified in the Timing Characteristics table for full temperature range.
What is the maximum load capacitance the MAX902ESD can drive while maintaining 8ns propagation delay?
The 8ns typical propagation delay is characterized at CL = 15pF, as stated in the Timing Characteristics table. Response time increases with load capacitance - Figure MAX900-03 toc08 shows tpd+ rising from ~8ns at 15pF to ~14ns at 70pF. For designs requiring guaranteed 8ns performance, keep total node capacitance ≤15pF using short traces and minimal stubs.
Is the MAX902ESD pin-compatible with other members of the MAX900–MAX903 family?
No - the MAX902ESD uses a 14-pin Narrow SO package with unique pinout (e.g., VEE on pin 6, VDD on pin 11, no N.C. pins), differing from the 16-pin MAX901 and 20-pin MAX900. Pin compatibility exists only within same-part variants (e.g., MAX902CPD and MAX902ESD share identical pin functions), not across family members. This is confirmed in the Pin Configurations section and ordering table.
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:
- Obsolete
- 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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LM393DR
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