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Analog Devices Inc./Maxim Integrated MAX932CUA
- Part No.:
- MAX932CUA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX932CUA.pdf
- Description:
- IC COMPARATOR 2 W/VOLT REF 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,188
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Product details
Overview
MAX932CUA from Maxim Integrated is a dual micropower comparator with integrated 1.182V ±2% bandgap reference, programmable hysteresis via HYST pin, TTL/CMOS-compatible outputs sourcing up to 40mA, and operation from +2.5V to +11V single supply (or ±1.25V to ±5.5V dual supply). It targets battery-powered threshold detection and window comparator circuits requiring ultra-low quiescent current (≤4µA) and rail-to-rail input range down to V−.
For engineers reviewing the MAX932CUA datasheet, MAX932CUA pinout, MAX932CUA application, or MAX932CUA equivalent, key selection considerations include its dual-comparator architecture with shared reference and hysteresis control, guaranteed 0°C to +70°C commercial temperature range, 8-pin SO package, and compatibility with low-voltage 3V/5V systems where supply current and noise margin are critical.
Technical Context
The MAX932CUA implements two independent comparators sharing a single internal 1.182V reference and one HYST pin for simultaneous hysteresis programming. Its output stage eliminates crowbar current during transitions, suppressing parasitic supply feedback without external bypassing. Input common-mode range extends from V− to (V+ − 1.3V), enabling direct sensing near ground in single-supply configurations.
Propagation delay is 12µs at 10mV overdrive (TA = +25°C); input offset voltage is ±10mV max; input leakage is ±0.01nA (IN+/IN−) and ±0.02nA (HYST). The device draws ≤4µA supply current over temperature and supports adjustable hysteresis using two external resistors between REF and HYST/V−.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +11V single supply; ±1.25V to ±5.5V dual supply - enables use in 3V/5V battery systems and bipolar signal monitoring. |
| Quiescent Current | ≤4µA over temperature - ensures multi-year battery life in always-on threshold detectors. |
| Reference Voltage | 1.182V ±2% (0°C to +70°C) - provides stable trip point without external precision reference. |
| Propagation Delay | 12µs at 10mV overdrive - supports medium-speed monitoring in alarm and oscillator applications. |
| Output Drive | Sources ≥40mA continuously; sinks ≥5mA - directly drives LEDs, small relays, or logic inputs without buffer stages. |
| Input Common-Mode Range | V− to (V+ − 1.3V) - allows input signals down to ground in single-supply operation. |
| Hysteresis Control | Programmable via HYST pin (REF to REF − 50mV) - enables noise-immune switching without external feedback networks. |
Pinout & Package
MAX932CUA is housed in an 8-pin SO (Small Outline) package, 0°C to +70°C commercial temperature grade, with gull-wing leads and standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A output; sinks and sources current; swings from V+ to V− - TTL/CMOS compatible when V− = GND. |
| 2 | V− | Negative supply; connect to GND for single-supply operation - defines reference for REF and input common-mode range. |
| 3 | INA+ | Noninverting input of comparator A - accepts signals from V− to (V+ − 1.3V). |
| 4 | INB− | Inverting input of comparator B - shares same input voltage range and leakage specs as INA+. |
| 5 | INB+ | Noninverting input of comparator B - enables independent dual-threshold configuration. |
| 6 | HYST | Hysteresis control input; voltage range REF to (REF − 50mV) - sets hysteresis band width via external resistor divider. |
| 7 | REF | 1.182V ±2% reference output referenced to V− - supplies precise bias for both comparators and hysteresis network. |
| 8 | V+ | Positive supply - supports wide input voltage range and high-output drive capability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | ≤4µA over full temperature range - minimizes standby power in portable and remote sensors. |
| No crowbar output switching | Eliminates supply-line glitches during state transitions - improves system stability without mandatory decoupling capacitors. |
| Integrated 2% reference | 1.182V ±2% accuracy over 0°C to +70°C - removes need for external reference IC or precision resistor dividers. |
| Programmable hysteresis | Adjustable 0–100mV hysteresis band via two resistors on HYST pin - simplifies noise-immune threshold design vs. external positive feedback. |
| Rail-to-rail input capability | Input range includes V− and extends within 1.3V of V+ - supports ground-referenced sensing in 3V systems. |
Applications
| Battery-Powered Threshold Detector | Window Comparator for Power Monitoring |
|---|---|
|
Use Scenario: Detecting low-battery condition in handheld medical devices using a resistive divider from battery to IN+ while referencing REF. IC Role / Device Role / Timing Role: Dual comparator compares divided battery voltage against upper/lower thresholds set by REF and resistor networks. Use Value: Enables precise, low-power undervoltage/overvoltage alerts with <4µA supply current and no external reference required. |
Use Scenario: Monitoring 5V supply rails in industrial controllers to assert "power-good" only when voltage stays within 4.5V–5.5V window. IC Role / Device Role / Timing Role: MAX932CUA's two comparators implement independent high/low trip points using shared REF and HYST-controlled hysteresis. Use Value: Eliminates chatter near thresholds and reduces component count by integrating reference and dual comparators in one 8-pin SO package. |
| Oscillator Circuit with Hysteresis | Auto-Shutoff Power Switch |
|
Use Scenario: Building relaxation oscillator in IoT sensor nodes using capacitor charging through resistor and MAX932CUA hysteresis feedback. IC Role / Device Role / Timing Role: Comparator toggles output based on capacitor voltage crossing upper/lower thresholds defined by REF and HYST network. Use Value: Achieves stable oscillation frequency with <4µA quiescent current and no external timing reference or op-amp. |
Use Scenario: Enabling timed auto-off for portable test equipment after button press, using RC timing into IN+ and hysteresis-latched output. IC Role / Device Role / Timing Role: MAX932CUA acts as latching comparator controlling MOSFET gate; OUTA drives load while HYST sustains state. Use Value: Delivers 40mA output drive to sustain power switch while consuming only 3.5µA in standby - extends battery life significantly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator with reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX932ESA | Same functionality and pinout; rated for −40°C to +85°C extended temperature range. | Suitable for automotive or industrial environments requiring wider thermal tolerance. | Select MAX932ESA when operating outside 0°C–70°C; otherwise MAX932CUA offers cost advantage for commercial-grade designs. |
| MAX922CUA | Pin-incompatible; features 1% reference accuracy (vs. 2%) but higher 8µA quiescent current. | Better precision for metrology-critical thresholds; less suitable for ultra-low-power battery systems. | Choose MAX922CUA only if ±1% reference accuracy is mandatory and 4µA vs. 8µA supply current is not limiting. |
Compared with MAX932ESA, MAX932CUA trades extended temperature support for lower cost and identical performance in commercial environments; compared with MAX922CUA, it prioritizes micropower operation and cost over reference precision, making it optimal for long-life battery applications where ±2% reference tolerance is acceptable.
Availability
MAX932CUA is available at Aetrix Electronics and suitable for battery-powered systems, threshold detectors, window comparators, oscillator circuits, and alarm circuits requiring stable component supply with guaranteed 0°C to +70°C operation.
Supply support for MAX932CUA 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) designs precision analog and mixed-signal ICs for power, sensing, and interface applications in industrial, medical, and consumer markets.
The MAX931–MAX934 family delivers ultra-low-power comparators with integrated references for energy-constrained systems where supply current, board space, and external component count must be minimized.
FAQ
What is the maximum supply voltage for MAX932CUA in single-supply operation?
The MAX932CUA supports a single-supply voltage range of +2.5V to +11V. When operated with V− tied to GND, the absolute maximum rating for V+ to GND is +12V, but functional operation is specified up to +11V. Exceeding +11V may degrade reference accuracy or increase supply current beyond datasheet limits.
Does MAX932CUA require external bypass capacitors on its supply pins?
No - the MAX932CUA's unique output stage eliminates crowbar current during switching, minimizing supply-line transients. Bypass capacitors are not required unless the power source has high impedance or long traces; in such cases, a 100nF ceramic capacitor placed close to V+ and V− is recommended for stability.
Can the internal reference of MAX932CUA be used to bias external circuitry?
Yes - the REF pin provides 1.182V ±2% referenced to V− and can source up to 15µA or sink up to 8µA. It is intended to drive the HYST network and comparator inputs; loading beyond these limits will cause reference voltage droop and reduced accuracy.
How is hysteresis programmed on MAX932CUA?
Hysteresis is programmed by connecting two resistors: R1 between REF and HYST, and R2 between HYST and V−. The HYST voltage adjusts between REF and (REF − 50mV), producing a hysteresis band up to 100mV. No external feedback loop or op-amp is needed - the method is exclusive to MAX931/MAX932/MAX933.
Is MAX932CUA pin-compatible with any other Maxim comparator families?
No - the MAX932CUA is not pin-compatible with MAX922. However, the MAX933 and MAX934 are pin-compatible with MAX923 and MAX924 respectively. For drop-in replacement of MAX932CUA, only MAX932ESA (same pinout, extended temp) qualifies; MAX922 requires PCB redesign due to different pin assignments.
MAX932CUA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- with Voltage Reference
- Number of Elements:
- 2
- Output Type:
- CMOS, TTL
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 11V, ±1.25V ~ 5.5V
- :
- 10mV @ 5V
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- 0.015mA @ 5V
- Current - Output (Typ):
- 6µA
- Current - Quiescent (Max):
- 80dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 12µs
- Propagation Delay (Max):
- 50mV
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-uMAX/uSOP
MAX932CUA FAQ
1.How can I place an order for MAX932CUA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX932CUA 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 MAX932CUA reliable?
The price and inventory of MAX932CUA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX932CUA is usually 5 days.
3.What payment methods are accepted for MAX932CUA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX932CUA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX932CUA?
MAX932CUA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX932CUA 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 MAX932CUA?
For technical support, including MAX932CUA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX932CUA requirements.
6.How does Aetrix verify that MAX932CUA is sourced from the original manufacturer or authorized distributors?
All MAX932CUA 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 MAX932CUA meets industry standards.
7.What is the process for return or replacement of MAX932CUA?
All MAX932CUA units undergo pre-shipment inspection (PSI). If there is an issue with MAX932CUA, 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 MAX932CUA part is unused and in its original packaging.
Return procedure for MAX932CUA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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