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Analog Devices Inc./Maxim Integrated MAX903CPA+
- Part No.:
- MAX903CPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX903CPA+.pdf
- Description:
- IC COMPARATOR 1 W/LATCH 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,939
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Product details
Overview
MAX903CPA+ 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 separate analog/digital supplies (±5V or +5V to +10V analog, +5V digital), and includes independent TTL latch inputs for output state hold - ideal for high-speed A/D converter front-ends and line receiver circuits.
For engineers reviewing the MAX903CPA+ datasheet, MAX903CPA+ pinout, MAX903CPA+ application, or MAX903CPA+ equivalent, key selection considerations include its 8ns propagation delay, latch-enabled output retention, ±5V or single-supply analog operation, TTL-level compatibility, and 8-pin DIP package with verified pin mapping for channel A–D routing.
Technical Context
The MAX903CPA+ integrates four independent high-gain comparators in a single 8-pin DIP package, each with differential inputs referenced to VEE (analog negative rail) and TTL outputs driven by internal pull-ups. Its architecture supports flexible supply configurations: analog supplies (VCC/VEE) can be ±5V or +5V to +10V with VEE grounded, while digital supply (VDD) is fixed at +5V.
Each comparator features a dedicated TTL-compatible latch input that holds the output state when driven low; this latching function is fully specified with 10ns latch-disable-to-output delays and 2ns minimum setup/1ns hold times. Input common-mode range extends to the negative rail, enabling ground-sensing operation in single-supply systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 8ns typical at 5mV overdrive - enables sampling of >100MHz signals in A/D interfaces |
| Power Dissipation | 18mW per comparator at +5V - supports low-thermal-load designs in dense PCB layouts |
| Analog Supply Range | +5V to +10V or ±5V - allows single-supply ground-referenced or split-rail precision sensing |
| Input Common-Mode Range | Includes VEE (negative rail) - permits direct sensing of signals down to 0V without level-shifting |
| Latch Input Compatibility | TTL logic thresholds (0.8V low / 1.4V high) - interoperates directly with standard 74LS/74F logic families |
| Output Drive | TTL-compatible with 2.4V VOH min @ 1mA source / 0.4V VOL max @ 8mA sink - drives 4 LS-TTL loads directly |
| Input Offset Voltage | 1mV min / 3mV max over full temperature - ensures <10mV threshold error in precision threshold detection |
Pinout & Package
MAX903CPA+ uses an 8-pin plastic DIP (dual in-line package) with 0.3-inch body width and through-hole mounting. Pin 1 is marked with a notch or dot; pins are numbered counter-clockwise from top-left.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Positive analog supply input - connects to +5V to +10V analog rail (or +5V in single-supply mode) |
| 2 | IN+ | Positive input of Channel A comparator - accepts differential signal relative to IN− (Pin 3) |
| 3 | IN− | Negative input of Channel A comparator - reference node for Channel A; common-mode range includes VEE |
| 4 | VEE | Analog negative supply and substrate connection - tied to −5V (split supply) or GND (single supply) |
| 5 | LATCH | TTL-compatible latch enable for Channel A - drives low to freeze output state; high for transparent operation |
| 6 | GND | Digital ground reference - separates digital return path from analog ground (VEE) for noise isolation |
| 7 | OUT | TTL output of Channel A - active-high compatible with LS-TTL; internally pulled up to VDD (Pin 8) |
| 8 | VDD | Positive digital supply - must be +5V; powers output stage and latch circuitry independently of analog rails |
Key Features
| Feature | Design Value |
|---|---|
| 8ns propagation delay | Enables real-time discrimination of fast edges in high-speed data acquisition and clock recovery |
| Independent TTL latch per channel | Allows asynchronous capture and hold of comparator states without external logic or timing constraints |
| Separate analog/digital supplies | Prevents digital switching noise from corrupting analog input signals via dedicated VEE/GND isolation |
| Input range includes negative rail | Eliminates need for input biasing networks when monitoring unipolar signals in single-supply systems |
| 18mW/comparator power | Reduces thermal stress in multi-comparator arrays and simplifies heatsinking in compact enclosures |
Applications
| High-Speed A/D Converters | Line Receivers |
|---|---|
Use Scenario: Front-end signal conditioning for flash or pipeline ADCs requiring sub-10ns decision latency. IC Role / Device Role / Timing Role: Quad comparator acting as parallel threshold detector for analog input quantization; latch inputs synchronize sampling to system clock edge. Use Value: 8ns propagation delay ensures minimal aperture uncertainty, preserving effective resolution in >50MSPS converters. |
Use Scenario: High-fidelity reception of ECL- or PECL-level data streams converted to TTL logic levels. IC Role / Device Role / Timing Role: Differential line receiver with rail-to-rail input common-mode support; VEE tied to −5V enables direct termination matching. Use Value: Input offset voltage ≤3mV and CMRR ≥80µV/V maintain signal integrity against common-mode noise on long traces. |
| Threshold Detectors | PWM Circuits |
Use Scenario: Precision overvoltage/undervoltage monitoring in DC power supplies with programmable trip points. IC Role / Device Role / Timing Role: Comparator comparing feedback voltage against DAC-generated reference; latch input freezes fault state for microcontroller readback. Use Value: Latch disable-to-output delay ≤10ns ensures deterministic fault capture synchronized to control loop timing. |
Use Scenario: Edge-aligned PWM generation using ramp-and-compare architecture with synchronous output hold. IC Role / Device Role / Timing Role: Comparator comparing sawtooth ramp against control voltage; latch input captures duty-cycle edge for glitch-free output transitions. Use Value: Matched tpd+ and tpd− (≤2ns skew) guarantees symmetrical rise/fall timing critical for motor drive commutation. |
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 |
|---|---|---|---|
| MAX9203CSA+ | Pin-for-pin compatible; same 8ns delay but 9mW/comparator (50% lower power); no latch inputs | Requires external latch or FPGA logic for state hold; better suited for continuous high-speed comparison without hold | Select when power efficiency is prioritized over integrated latching functionality |
| LM339N | Quad comparator with open-collector outputs; 1.3µs typical delay; no latch; wider supply range (2–36V) | Cannot replace MAX903CPA+ in high-speed (>1MHz) or TTL-driven systems due to speed and output architecture mismatch | Use only in low-frequency, cost-sensitive industrial monitoring where speed and latch are unnecessary |
Compared with MAX903CPA+, MAX9203CSA+ offers identical speed and footprint with halved power but removes latching - making it suitable for streaming comparison, while LM339N trades speed and TTL drive for broad voltage tolerance and cost, limiting use to non-critical timing applications.
Availability
MAX903CPA+ 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 and test equipment lifecycles.
Supply support for MAX903CPA+ 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 data acquisition and real-time signal discrimination, targeting applications demanding sub-10ns propagation delay, rail-inclusive input range, and integrated output latching.
FAQ
What is the maximum operating temperature range for MAX903CPA+?
The MAX903CPA+ is rated for 0°C to +70°C operation, as indicated by the 'C' suffix in its ordering code. This commercial-grade temperature range is validated across all electrical specifications including propagation delay, input offset voltage, and latch timing parameters - ensuring reliable performance in office, lab, and non-extreme industrial environments where MAX903CPA+ is deployed.
Does MAX903CPA+ support single-supply operation?
Yes, MAX903CPA+ supports true single-supply operation: tie VEE to GND, apply +5V to +10V to VCC, and +5V to VDD. Its input common-mode range includes the negative rail (VEE/GND), enabling ground-referenced signal detection without external level-shifting circuitry - a key design advantage confirmed in the datasheet's Figure 1B and Electrical Characteristics tables.
What is the purpose of the LATCH pin on MAX903CPA+?
The LATCH pin on MAX903CPA+ controls output state retention: when driven low, it freezes the current comparator output state regardless of subsequent input changes; when high, the comparator operates transparently. This function is TTL-compatible (0.8V low / 1.4V high thresholds) and enables precise edge-triggered sampling - a capability explicitly documented in the MAX903CPA+ timing diagrams and latch parameter tables.
Can MAX903CPA+ be used with ±5V analog supplies?
Yes, MAX903CPA+ is fully specified for ±5V analog operation: connect VCC to +5V, VEE to −5V, and VDD to +5V. The Absolute Maximum Ratings confirm analog supply voltage (VCC to VEE) up to +12V, and Electrical Characteristics tables list performance data under ±5V conditions - validating its use in bipolar signal conditioning and legacy industrial systems requiring dual-rail analog interfaces.
Is MAX903CPA+ still recommended for new designs?
No - MAX903CPA+ is Not Recommended for New Designs per Maxim's official documentation. The fabrication process is obsolete, and Maxim recommends migration to the pin-compatible MAX9203 series (e.g., MAX9203CSA+) which delivers identical 8ns speed with half the power consumption and modern process reliability - though without integrated latch inputs.
MAX903CPA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- with Latch
- Number of Elements:
- 1
- 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):
- 4mA, 3mA, 1.5mA
- 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
- :
- 8-PDIP
MAX903CPA+ FAQ
1.How can I place an order for MAX903CPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX903CPA+ 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 MAX903CPA+ reliable?
The price and inventory of MAX903CPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX903CPA+ is usually 5 days.
3.What payment methods are accepted for MAX903CPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX903CPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX903CPA+?
MAX903CPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX903CPA+ 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 MAX903CPA+?
For technical support, including MAX903CPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX903CPA+ requirements.
6.How does Aetrix verify that MAX903CPA+ is sourced from the original manufacturer or authorized distributors?
All MAX903CPA+ 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 MAX903CPA+ meets industry standards.
7.What is the process for return or replacement of MAX903CPA+?
All MAX903CPA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX903CPA+, 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 MAX903CPA+ part is unused and in its original packaging.
Return procedure for MAX903CPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX903CPA+ 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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