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Analog Devices Inc./Maxim Integrated MAX902CPD+
- Part No.:
- MAX902CPD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX902CPD+.pdf
- Description:
- IC COMPARATOR 2 W/LATCH 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,392
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Product details
Overview
MAX902CPD+ from Maxim Integrated is a quad high-speed, low-power voltage comparator with differential analog inputs and TTL-logic outputs featuring active internal pull-ups. It delivers 8ns typical propagation delay at 5mV overdrive, consumes 18mW per comparator at +5V, supports separate analog/digital supplies (VCC/VEE up to ±5V or VCC = +5V to +10V with VEE = GND), and includes independent TTL-compatible latch inputs for output hold functionality - ideal for high-speed A/D converter front-ends and line receivers.
For engineers reviewing the MAX902CPD+ datasheet, MAX902CPD+ pinout, MAX902CPD+ application, or MAX902CPD+ equivalent, key selection considerations include latch-enabled output retention, rail-to-rail input common-mode range including the negative rail, dual-supply isolation capability, and compatibility with TTL logic families in timing-critical sampling circuits.
Technical Context
The MAX902CPD+ implements four independent comparators with fully differential analog inputs referenced to VEE (analog ground/subsystem return) and VCC (positive analog supply), while digital logic-including TTL outputs and latch control-is powered by VDD (+5V only). Its architecture enables operation with split ±5V analog supplies or single +5V to +10V analog supply with VEE grounded, decoupling analog signal integrity from digital noise via separate AGND (VEE) and DGND paths.
Each comparator features TTL-compatible latch inputs (pins 4, 5, 12, 13) that freeze output states on low assertion, with guaranteed setup (2ns) and hold (1ns) times. Propagation delay symmetry is tightly controlled (∆tpd ≤ 2ns max between outputs), and input offset voltage remains ≤3mV over full temperature range (0°C to +70°C), supporting precision threshold detection in fast data-acquisition systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 8ns typ (5mV overdrive, CL = 15pF) - enables sub-10ns decision latency in high-speed sampling circuits. |
| Power Dissipation | 18mW per comparator at +5V - allows dense integration in thermally constrained PCB layouts. |
| Input Common-Mode Range | VEE − 0.1V to VCC − 2.25V - supports ground-sensing operation with single +5V supply (VEE = GND). |
| Latch Input Compatibility | TTL-level (VLH ≥ 1.4V, VLL ≤ 1.4V) - interoperates directly with standard 74LS/74ALS logic without level-shifting. |
| Output Drive | VOH ≥ 2.4V @ 1mA sink, VOL ≤ 0.4V @ 8mA source - meets TTL fan-out of 4 with margin. |
| Analog Supply Range | VCC = +5V to +10V or ±5V, VEE = −5V to 0V - accommodates both single- and dual-supply mixed-signal systems. |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade instrumentation and data acquisition equipment. |
Pinout & Package
MAX902CPD+ is housed in a 14-pin plastic DIP package (0.300" wide) with through-hole mounting. Pin 1 is located at the left end of the top row when viewed from the top with the notch or dot oriented left.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8, 9, 16 | IN− (A, B, C, D) | Negative input terminals for each of four independent comparators; referenced to VEE. |
| 2, 7, 10, 15 | IN+ (A, B, C, D) | Positive input terminals for each comparator; full common-mode range includes VEE. |
| 3 | GND | Digital ground reference for VDD and latch logic; 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 74LS loads directly. |
| 6 | VEE | Negative analog supply and substrate connection; sets lower bound of input common-mode range. |
| 11 | VDD | +5V digital supply only; powers latch logic and output stages - not adjustable. |
| 14 | VCC | Positive analog supply (+5V to +10V); defines upper bound of input range and analog gain stability. |
Key Features
| Feature | Design Value |
|---|---|
| Quad comparator with independent latches | Four fully isolated channels, each with dedicated TTL latch input (pins 4,5,12,13) enabling asynchronous output hold without external logic. |
| Rail-inclusive input range | Inputs operate down to VEE − 0.1V - permits zero-crossing detection and ground-referenced sensing in single-supply configurations. |
| Split-supply noise isolation | Separate VCC/VEE (analog) and VDD/GND (digital) domains minimize coupling of digital switching noise into analog thresholds. |
| Guaranteed timing symmetry | Maximum 2ns skew (∆tpd) between any two comparator outputs - critical for simultaneous sampling across multiple channels. |
| Low-input bias current | IB ≤ 10µA max (full temp range) - preserves accuracy in high-impedance sensor interfaces and passive filter networks. |
Applications
| High-Speed A/D Converters | Line Receivers |
|---|---|
Use Scenario: Front-end threshold comparison for flash or pipeline ADCs requiring sub-10ns decision latency and precise voltage windowing. IC Role / Device Role / Timing Role: Quad comparator provides parallel analog-to-digital decision logic with latch synchronization to sampling clock edges. Use Value: 8ns propagation delay and <2ns inter-channel skew ensure consistent aperture timing across all four channels, reducing code-transition uncertainty. | Use Scenario: High-fidelity reception of ECL- or PECL-level signals converted to TTL-compatible logic levels in backplane or telecom interfaces. IC Role / Device Role / Timing Role: Differential input stage rejects common-mode noise on long traces; TTL outputs interface directly with downstream logic buffers. Use Value: Input common-mode range extending to VEE enables robust operation even with large DC offsets on incoming lines. |
| Threshold Detectors | PWM Circuits |
Use Scenario: Multi-level voltage monitoring in power supply supervision or battery management systems with programmable alarm thresholds. IC Role / Device Role / Timing Role: Each comparator independently compares a sensor-derived voltage against a DAC-generated reference. Use Value: Independent latch inputs allow asynchronous capture and hold of fault conditions without CPU intervention or additional storage elements. | Use Scenario: Real-time duty-cycle adjustment and edge alignment in motor control or lighting drivers using variable-frequency PWM generation. IC Role / Device Role / Timing Role: Comparator compares ramp waveform against modulated reference to generate precise switching edges. Use Value: 18mW per comparator enables thermal efficiency in compact, fanless motor driver modules operating continuously. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad voltage comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9202CSD+ | Pin-for-pin compatible, same 8ns propagation delay, but 9mW/comparator (50% lower power); requires VDD = +5V, no VEE support. | Not suitable for split-supply or ground-sensing designs; optimized for low-power single-supply systems only. | Select when power budget is constrained and analog supply is single-ended +5V. |
| LM339N | Quad comparator with open-collector outputs, but 1.3µs propagation delay, no latch inputs, and no TTL-compatible outputs (requires external pull-up). | Applicable only in non-critical timing applications where microsecond response suffices and latch functionality is unnecessary. | Select only for cost-sensitive, low-speed industrial controls where speed and latch features are irrelevant. |
Compared with MAX902CPD+, MAX9202CSD+ offers identical speed and layout compatibility with halved power consumption but sacrifices analog supply flexibility; LM339N provides basic quad comparison at much lower cost and speed, lacking latch control, TTL drive, and nanosecond timing - making it unsuitable for A/D front-ends or synchronized sampling.
Availability
MAX902CPD+ is available at Aetrix Electronics and suitable for high-speed data acquisition, precision threshold monitoring, and line receiver circuits requiring stable component supply across commercial temperature ranges.
Supply support for MAX902CPD+ 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 fabless 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 nanosecond-speed voltage discrimination in data-conversion and real-time signal conditioning systems, emphasizing latch-controlled output retention and supply-domain isolation.
FAQ
What is the maximum allowable analog supply voltage for MAX902CPD+?
The MAX902CPD+ supports an analog supply voltage (VCC to VEE) up to +12V absolute maximum. In normal operation, VCC may range from +5V to +10V with VEE grounded, or ±5V for split-supply use. Exceeding +12V differential risks permanent damage, and VDD must remain fixed at +5V regardless of analog supply configuration.
Does MAX902CPD+ support single-supply operation with ground-referenced inputs?
Yes, MAX902CPD+ supports true single-supply operation: with VEE tied to GND and VCC set to +5V to +10V, its input common-mode range extends from −0.1V to VCC − 2.25V, enabling accurate detection of signals near or at ground potential - essential for sensor interfaces and battery-monitoring circuits.
Are the latch inputs on MAX902CPD+ compatible with 3.3V logic levels?
No, the latch inputs on MAX902CPD+ are strictly TTL-compatible (VLH ≥ 1.4V, VLL ≤ 1.4V), designed for +5V logic families. Driving them with 3.3V logic may result in unreliable latching due to insufficient high-level margin; level-shifting or a 5V-tolerant buffer is required for interfacing with 3.3V controllers.
What is the output drive capability of MAX902CPD+?
MAX902CPD+ provides TTL-compatible outputs with VOH ≥ 2.4V at 1mA source current and VOL ≤ 0.4V at 8mA sink current. This meets standard 74LS fan-out specifications (up to four loads), eliminating need for external pull-ups when driving legacy TTL or CMOS logic with 5V thresholds.
Is MAX902CPD+ recommended for new designs?
No - Maxim explicitly states MAX902CPD+ is "Not Recommended for New Designs" due to discontinuation of its fabrication process. While functional and supported for legacy repair, Aetrix recommends evaluating MAX9202CSD+ as a drop-in, lower-power replacement with identical speed and pinout for new projects.
MAX902CPD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- 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:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Through Hole
- :
- 14-PDIP
MAX902CPD+ FAQ
1.How can I place an order for MAX902CPD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX902CPD+ 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 MAX902CPD+ reliable?
The price and inventory of MAX902CPD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX902CPD+ is usually 5 days.
3.What payment methods are accepted for MAX902CPD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX902CPD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX902CPD+?
MAX902CPD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX902CPD+ 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 MAX902CPD+?
For technical support, including MAX902CPD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX902CPD+ requirements.
6.How does Aetrix verify that MAX902CPD+ is sourced from the original manufacturer or authorized distributors?
All MAX902CPD+ 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 MAX902CPD+ meets industry standards.
7.What is the process for return or replacement of MAX902CPD+?
All MAX902CPD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX902CPD+, 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 MAX902CPD+ part is unused and in its original packaging.
Return procedure for MAX902CPD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX902CPD+ Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP USA Inc.
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