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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:150
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Product details
Overview
The MAX932CUA+ from Maxim Integrated is a dual micropower voltage comparator with integrated 1.182V ±2% bandgap reference, programmable hysteresis via HYST pin, TTL/CMOS-compatible push-pull outputs, and ultra-low 4µA max supply current over 0°C to +70°C. It operates from single +2.5V to +11V or dual ±1.25V to ±5.5V supplies, with input common-mode range extending from V− to (V+ − 1.3V), making it ideal for battery-powered threshold detection in portable instrumentation.
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 operation at 3V/5V, absence of crowbar current during switching, and compatibility with space-constrained µMAX-8 layouts.
Technical Context
The MAX932CUA+ integrates two independent comparators sharing a single internal 1.182V reference and one HYST terminal for simultaneous hysteresis programming across both channels. Its output stage continuously sources up to 40mA while sinking ≥5mA, eliminating switching crowbar current to suppress supply-line parasitic feedback.
Input offset voltage is ±10mV (max), input leakage is ±0.01nA (typ) on IN+/IN−, and propagation delay is 12µs (typ) with 10mV overdrive. The device supports rail-to-rail input operation down to the negative supply and features no external feedback requirement for hysteresis implementation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +11V single supply or ±1.25V to ±5.5V dual supply - enables direct use in 3V/5V systems and bipolar signal monitoring. |
| Quiescent Supply Current | <4µA max over 0°C to +70°C - preserves battery life in always-on sensor nodes and low-power wake-up circuits. |
| Reference Voltage | 1.182V ±2% (0°C to +70°C) referenced to V− - provides stable trip point without external precision reference. |
| Propagation Delay | 12µs typical with 10mV overdrive - ensures timely response in oscillator timing and alarm triggering applications. |
| Output Drive Capability | 40mA continuous source, 50mA peak sink - directly drives LEDs, small relays, or logic inputs without buffer stages. |
| Input Common-Mode Range | V− to (V+ − 1.3V) - supports detection of signals near ground or high-side sensing in single-supply configurations. |
| Hysteresis Control | Programmable via HYST pin (REF to REF − 50mV) - enables noise-immune thresholding using only two resistors, no feedback loop. |
Pinout & Package
MAX932CUA+ is housed in an 8-pin µMAX package (pin-compatible with SO-8 and DIP-8 footprints), measuring 3mm × 3mm × 0.8mm, suitable for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A output: push-pull, swings from V+ to V−; sinks and sources current without external pull-ups. |
| 2 | V− | Negative supply rail; connect to GND for single-supply operation; defines reference and output swing baseline. |
| 3 | INA+ | Noninverting input of comparator A; accepts signals from V− to (V+ − 1.3V); <0.01nA leakage enables high-impedance sensing. |
| 4 | INB− | Inverting input of comparator B; matched offset and leakage to INA−; supports differential or single-ended configurations. |
| 5 | INB+ | Noninverting input of comparator B; identical electrical specs to INA+; enables dual independent threshold comparisons. |
| 6 | REF | 1.182V ±2% reference output referenced to V−; capable of sourcing 15µA/sinking 8µA; must not be bypassed. |
| 7 | V+ | Positive supply rail; supports up to +11V; powers comparators, reference, and output stage simultaneously. |
| 8 | OUTB | Comparator B output: functionally identical to OUTA; allows independent control of two loads or logic paths. |
Key Features
| Feature | Design Value |
|---|---|
| No crowbar current during switching | Eliminates supply-line glitches and parasitic feedback, enabling stable operation without stringent PCB layout rules. |
| Shared HYST pin for dual-channel hysteresis | Single resistor pair sets identical hysteresis on both comparators - reduces component count and board area vs. discrete solutions. |
| 40mA continuous output source capability | Drives LEDs, optocouplers, or MOSFET gates directly - removes need for external driver transistors in low-power interfaces. |
| Input range includes negative rail | Supports ground-referenced inputs in single-supply systems and bipolar signal monitoring in dual-supply configurations. |
| Ultra-low 4µA supply current | Enables multi-year battery life in wireless sensors and maintenance-free portable devices operating at 3V–5V. |
Applications
| Battery-Powered Threshold Detection | Window Comparator System |
|---|---|
|
Use Scenario: Monitoring lithium-ion cell voltage during charging/discharging to trigger under-voltage lockout or over-voltage cutoff. IC Role / Device Role / Timing Role: Dual comparator compares cell voltage against upper/lower thresholds derived from internal 1.182V reference and resistor dividers. Use Value: Eliminates external reference and reduces BOM count by 3 components versus discrete comparator + reference solution. |
Use Scenario: Power-good supervision in embedded microcontroller systems requiring valid 3.3V or 5V rail before boot. IC Role / Device Role / Timing Role: MAX932CUA+ implements undervoltage and overvoltage detection with independent outputs (OUTA/OUTB) for AND-gated power-good assertion. Use Value: Programmable hysteresis prevents chatter near trip points; internal reference ensures consistent thresholds across temperature. |
| Oscillator Circuit | LED Bar-Graph Level Indicator |
|
Use Scenario: Building relaxation oscillators for clock generation or timing pulses in low-power data loggers. IC Role / Device Role / Timing Role: One comparator acts as Schmitt trigger with RC network and HYST pin; second comparator provides reset or enable control. Use Value: No external hysteresis resistors needed; 12µs propagation delay enables kHz-range oscillation with minimal external parts. |
Use Scenario: Visual battery level indication in handheld medical devices using four LEDs driven directly from comparator outputs. IC Role / Device Role / Timing Role: Two MAX932CUA+ units (four total comparators) compare stepped input voltage against reference-derived thresholds. Use Value: 40mA output drive eliminates current-limiting resistors per LED; internal reference ensures consistent brightness grading. |
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 |
|---|---|---|---|
| MAX932CSA+ | Same electrical specs; packaged in 8-pin plastic DIP instead of µMAX-8; larger footprint and higher thermal resistance. | Suitable for prototyping or through-hole assembly; less optimal for compact portable designs. | Select MAX932CSA+ when manual soldering or breadboard evaluation is required. |
| MAX922CUA+ | Pin-compatible dual comparator with 1% reference (1.200V ±1%), higher quiescent current (6µA max), same package. | Better accuracy for precision thresholding; trades 50% higher supply current for ±1% reference tolerance. | Choose MAX922CUA+ when reference accuracy dominates over battery life in mission-critical sensing. |
Compared with MAX932CUA+, MAX932CSA+ offers identical performance in a through-hole package for ease of validation, while MAX922CUA+ delivers tighter reference accuracy at the cost of increased quiescent current-enabling trade-off decisions between precision and energy efficiency.
Availability
MAX932CUA+ is available at Aetrix Electronics and suitable for battery-powered systems, threshold detectors, window comparators, and oscillator circuits requiring stable component supply with guaranteed commercial temperature range (0°C to +70°C) and µMAX-8 packaging.
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 management, sensing, and interface applications, with emphasis on low-power, high-reliability solutions.
The MAX931–MAX934 family was engineered for ultra-low-power comparator applications where micropower operation, integrated reference, and hysteresis simplicity are critical-targeting portable instrumentation, sensor interfaces, and energy-harvesting systems.
FAQ
What is the operating temperature range for MAX932CUA+?
The MAX932CUA+ is specified for the commercial temperature range of 0°C to +70°C. This is confirmed in the Ordering Information table, where "C" denotes the commercial grade, and the package variant "CUA" explicitly maps to 0°C to +70°C. It is not rated for extended or automotive temperature ranges.
Does MAX932CUA+ require external hysteresis components?
No, MAX932CUA+ does not require external feedback for hysteresis. It features a dedicated HYST pin that accepts a voltage between REF and (REF − 50mV); connecting two resistors between REF, HYST, and V− programs identical hysteresis on both comparators without external op-amp or feedback networks.
Can MAX932CUA+ operate from a 3V single supply?
Yes, MAX932CUA+ fully supports 3V single-supply operation. Its absolute minimum supply is +2.5V, and Electrical Characteristics tables explicitly list performance data at V+ = 3V, including supply current (2.4–3.0µA), input offset (±10mV), and response time (14µs).
What is the output swing behavior of MAX932CUA+?
MAX932CUA+ outputs swing from V+ to V− (not GND). When V− is tied to GND in single-supply mode, outputs swing rail-to-rail (e.g., 0V to 3V or 0V to 5V). In dual-supply mode (e.g., ±2.5V), OUTA and OUTB swing from +2.5V to −2.5V, ensuring full TTL/CMOS compatibility.
Is MAX932CUA+ pin-compatible with any other Maxim comparators?
MAX932CUA+ is not pin-compatible with MAX922CUA+ (per datasheet note: "The MAX932 and MAX922 are not pin-compatible"). However, it shares the same 8-pin µMAX pinout as MAX932ESA+ (−40°C to +85°C grade) and MAX932CSA+, differing only in temperature rating and package type-not pin function or assignment.
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:
- Active
- 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.
MAX932CUA+ Tags
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