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Analog Devices Inc./Maxim Integrated MAX932CUA+T
- Part No.:
- MAX932CUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX932CUA+T.pdf
- Description:
- IC COMPARATOR 2 W/VOLT REF 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,068
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Product details
Overview
The MAX932CUA+T 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 over temperature) and rail-to-rail input range down to V−.
For engineers reviewing the MAX932CUA+T datasheet, MAX932CUA+T pinout, MAX932CUA+T application, or MAX932CUA+T equivalent, this page delivers verified specifications, validated pin functions, confirmed dual-comparator use cases in low-voltage sensing, and two rigorously cross-checked alternative parts for design continuity.
Technical Context
The MAX932CUA+T integrates two independent comparators sharing one internal 1.182V reference and a dedicated HYST pin for hysteresis programming without external feedback. Its output stage eliminates crowbar current during transitions, minimizing parasitic supply feedback and enabling stable operation even with suboptimal PCB layout.
Input common-mode range extends from V− to (V+ − 1.3V), supporting operation near the positive rail. The device draws ≤4µA supply current at +25°C (3V or 5V supply), maintains 12µs propagation delay at 10mV overdrive, and features ±10mV input offset voltage across 0°C to +70°C.
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 direct interface with 3V/5V logic and bipolar sensor signals |
| Quiescent Current | ≤4µA over temperature - sustains multi-year battery life in always-on monitoring systems |
| 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 kHz-range oscillator and timing applications |
| Output Drive | Sources ≥40mA continuously; sinks ≥8mA - directly drives LEDs, small relays, or logic inputs without buffer stages |
| Input Offset Voltage | ±10mV max - ensures reliable detection of small differential signals above noise floor |
| Hysteresis Control | HYST pin accepts REF–0.05V to REF - enables precise, resistor-programmed hysteresis bands up to 100mV |
Pinout & Package
MAX932CUA+T is housed in an 8-pin µMAX package (3mm × 3mm, 0.5mm pitch), rated for 0°C to +70°C operation. Pinout is identical to MAX932ESA/MAX932CSA/MAX932CPA per Maxim's ordering table.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A output; sinks and sources current; swings from V+ to V− - supports dual-supply level shifting |
| 2 | V− | Negative supply rail; 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 spec (±0.01nA at +25°C) |
| 5 | INB+ | Noninverting input of comparator B - electrically identical to INA+; enables independent dual-threshold sensing |
| 6 | REF | 1.182V reference output referenced to V− - supplies precision voltage for threshold setting; max load ±15µA source / ±8µA sink |
| 7 | V+ | Positive supply rail - powers both comparators and reference; absolute max 12V |
| 8 | OUTB | Comparator B output; sinks and sources current; swings from V+ to V− - fully independent of OUTA, enabling parallel decision logic |
Key Features
| Feature | Design Value |
|---|---|
| No crowbar switching current | Eliminates supply-line glitches during output transitions, reducing need for aggressive bypassing and improving system stability |
| Programmable hysteresis via HYST pin | Enables precise, resistor-set hysteresis (up to 100mV) without external feedback networks or complex calculations |
| Rail-to-rail input range | Operates with inputs from V− to (V+ − 1.3V), allowing direct sensing of ground-referenced or high-side signals |
| 40mA continuous output source | Drives LEDs, optocouplers, or logic gates directly - avoids external driver ICs and saves board space |
| Ultra-low 4µA supply current | Extends battery life in portable medical monitors, IoT sensors, and remote alarm systems |
Applications
| Battery-Powered Threshold Detector | Window Comparator for Power Monitoring |
|---|---|
|
Use Scenario: Detecting low-battery condition in handheld instruments using a resistive divider from battery to MAX932CUA+T's INA+. IC Role / Device Role: Dual comparator compares divided battery voltage against internal 1.182V reference (INA− tied to REF) and hysteresis-adjusted threshold (INB−/INB+). Use Value: Eliminates external reference and reduces component count by 3–4 parts versus discrete solutions; 4µA quiescent current preserves shelf life. |
Use Scenario: Monitoring 5V supply for undervoltage (4.5V) and overvoltage (5.5V) in industrial controllers. IC Role / Device Role: MAX932CUA+T's two comparators implement independent high/low thresholds using REF and resistor dividers on INA+/INB+. Use Value: Internal reference ensures consistent trip points across temperature; HYST pin allows matched hysteresis on both thresholds without extra resistors. |
| Oscillator Circuit with Hysteresis | Auto-Off Power Switch |
|
Use Scenario: Generating clock signal in low-power sensor node using RC network and MAX932CUA+T hysteresis configuration. IC Role / Device Role: Comparator A forms Schmitt trigger with REF and HYST pin; comparator B buffers output or enables duty-cycle control. Use Value: Propagation delay <12µs and no crowbar current ensure clean, jitter-free oscillation at ~10kHz without supply coupling artifacts. |
Use Scenario: Enabling timed shutdown of peripheral circuitry after button press in portable diagnostics equipment. IC Role / Device Role: MAX932CUA+T comparator A triggers power MOSFET gate via RC timer; comparator B monitors reset condition or fault flag. Use Value: 40mA output drive directly switches logic-level MOSFETs; 4µA quiescent current keeps total standby draw below 5µA. |
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 electrical specs; SO-8 package (4.9mm × 6.0mm) instead of µMAX (3mm × 3mm); rated for –40°C to +85°C | Preferred for extended temperature industrial deployments where thermal margin >15°C is required | Select MAX932ESA+ when board space allows larger SO-8 and operating temperature exceeds +70°C |
| MAX922CUA+ | 1% reference accuracy (1.182V ±1%), otherwise identical pinout, supply, and output specs; higher cost | Suitable where tighter threshold tolerance (<±5mV) is mandatory, e.g., precision battery gauging or calibration circuits | Choose MAX922CUA+ only if ±1% reference accuracy is validated as necessary - adds cost without benefit in most threshold-detection use cases |
Compared with MAX932CUA+T, MAX932ESA+ offers wider temperature range in larger SO-8 packaging, while MAX922CUA+ trades ±2% reference tolerance for ±1% accuracy at higher unit cost - neither is pin-compatible with MAX932CUA+T in footprint, but all three share identical pin functions and electrical behavior within their respective temp/range specs.
Availability
MAX932CUA+T is available at Aetrix Electronics and suitable for battery-powered systems, threshold detectors, window comparators, and oscillator circuits requiring stable component supply with guaranteed 0°C to +70°C operation and µMAX footprint compatibility.
Supply support for MAX932CUA+T 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 in industrial, automotive, and communications markets.
The MAX931–MAX934 family was engineered for ultra-low-power sensing in portable and energy-constrained systems, combining micropower comparators with integrated references to minimize external components and extend battery life.
FAQ
What is the maximum supply voltage for MAX932CUA+T in single-supply operation?
The MAX932CUA+T supports a single-supply voltage range of +2.5V to +11V. When operated with V− connected to GND, the absolute maximum rating for V+ to GND is +12V, but functional operation is specified only up to +11V. Exceeding +11V may cause parametric degradation or reliability risk, per Absolute Maximum Ratings table.
Does MAX932CUA+T support dual-supply operation, and what are the limits?
Yes, MAX932CUA+T supports dual-supply operation from ±1.25V to ±5.5V. In this mode, V+ and V− are biased symmetrically around GND, and the output swings from V+ to V−. The device maintains full functionality including reference output (referenced to V−) and input common-mode range extending to V−.
How is hysteresis programmed on MAX932CUA+T, and what is the maximum achievable band?
Hysteresis on MAX932CUA+T is programmed using the HYST pin: connect R1 between REF and HYST, and R2 between HYST and V−. The hysteresis band (VHB) ≈ 2 × (VREF − VHYST), with VHYST adjustable from (REF − 50mV) to REF. This yields a maximum VHB of 100mV, confirmed in Applications Information section and Typical Operating Characteristics.
What is the output voltage swing capability of MAX932CUA+T?
MAX932CUA+T outputs swing from V+ to V− under all valid supply conditions. In single-supply mode (V− = GND), OUTA and OUTB swing from V+ to GND. In dual-supply mode, they swing rail-to-rail between V+ and V−. Output high voltage is typically V+ − 0.4V at 1.8mA load; output low is V− + 0.4V - verified in Electrical Characteristics tables for 5V and 3V operation.
Can MAX932CUA+T drive LEDs directly, and what current can it source?
Yes, MAX932CUA+T can drive LEDs directly: its output stage continuously sources ≥40mA (per output) and sinks ≥8mA. At V+ = 5V, it can deliver 40mA into a load referenced to V− (e.g., LED anode to V+, cathode to OUTA), enabling simple indicator circuits without external drivers - confirmed in Features list and Typical Operating Characteristics (OUTPUT VOLTAGE HIGH vs. LOAD CURRENT).
MAX932CUA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX932CUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX932CUA+T 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+T reliable?
The price and inventory of MAX932CUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX932CUA+T is usually 5 days.
3.What payment methods are accepted for MAX932CUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX932CUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX932CUA+T?
MAX932CUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX932CUA+T 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+T?
For technical support, including MAX932CUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX932CUA+T requirements.
6.How does Aetrix verify that MAX932CUA+T is sourced from the original manufacturer or authorized distributors?
All MAX932CUA+T 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+T meets industry standards.
7.What is the process for return or replacement of MAX932CUA+T?
All MAX932CUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX932CUA+T, 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+T part is unused and in its original packaging.
Return procedure for MAX932CUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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