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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:1,126
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Product details
Overview
MAX932CUA-T from Maxim Integrated is a dual micropower voltage comparator with integrated 1.182V ±2% bandgap reference, programmable hysteresis via HYST pin, and TTL/CMOS-compatible outputs that both source (up to 40mA) and sink current. It operates from a single +2.5V to +11V supply or dual ±1.25V to ±5.5V, with input common-mode range extending from V− to V+ − 1.3V - ideal for battery-powered threshold detection in portable instrumentation.
For engineers reviewing the MAX932CUA-T datasheet, MAX932CUA-T pinout, MAX932CUA-T application, or MAX932CUA-T equivalent, key selection criteria include ultra-low 4µA max quiescent current over temperature, guaranteed hysteresis implementation without external feedback, 12µs propagation delay at 10mV overdrive, and compatibility with 3V/5V single-supply systems requiring rail-to-rail input operation and stable internal reference.
Technical Context
The MAX932CUA-T integrates two independent comparators sharing a single internal 1.182V reference and a dedicated HYST pin for simultaneous hysteresis programming across both channels. Its output stage eliminates crowbar current during transitions, preventing supply-line glitches and parasitic feedback - critical for noise-sensitive low-power designs where layout constraints limit bypassing.
Input stages support operation down to the negative rail (V−), enabling direct sensing of ground-referenced signals in single-supply configurations. The HYST pin accepts voltages from REF − 50mV to REF, allowing precise hysteresis band control up to 100mV; this architecture avoids external resistive feedback networks while maintaining <±10mV input offset and sub-20µVRMS wideband noise performance.
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 - supports direct interfacing with 3V/5V logic and bipolar sensor signals. |
| Quiescent Current | <4µA over extended temperature - enables multi-year operation on coin-cell batteries in always-on monitoring circuits. |
| Reference Voltage | 1.182V ±2% (0°C to +70°C) referenced to V− - provides stable trip-point generation without external precision references. |
| Propagation Delay | 12µs at 10mV overdrive - ensures timely response in oscillator timing and fast threshold-detection loops. |
| Output Drive | Continuous 40mA source / 5mA sink - directly drives LEDs, small relays, or logic inputs without external buffers. |
| Input Common-Mode Range | V− to V+ − 1.3V - allows detection of signals near ground in single-supply systems (e.g., battery voltage monitoring). |
| Hysteresis Control | Programmable via HYST pin (REF − 50mV to REF) - enables repeatable, low-component-count hysteresis without feedback resistors. |
Pinout & Package
MAX932CUA-T is housed in an 8-pin µMAX package (3mm × 3mm, 0.5mm pitch), pin-compatible with SO and DIP variants. The package supports reflow soldering and offers thermal resistance θJA = 244°C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A output; sinks and sources current; swings from V+ to V− - connects directly to TTL/CMOS loads when V− = GND. |
| 2 | V− | Negative supply terminal; tied to GND for single-supply operation - defines reference point for REF and input common-mode range. |
| 3 | INA+ | Noninverting input of comparator A - accepts signals from V− to V+ − 1.3V; high-impedance (±0.01nA leakage). |
| 4 | INB− | Inverting input of comparator B - matched to INA−; used with INA+ to form differential threshold pair in window detectors. |
| 5 | INB+ | Noninverting input of comparator B - independently configurable; enables dual-threshold or redundant sensing architectures. |
| 6 | HYST | Hysteresis control input; voltage between REF − 50mV and REF sets hysteresis band - eliminates need for external positive-feedback network. |
| 7 | REF | 1.182V reference output referenced to V− - supplies precise bias for resistor-divider thresholds; not to be bypassed. |
| 8 | V+ | Positive supply input; supports up to +11V - powers both comparators and reference; decoupling recommended if supply impedance >1Ω. |
Key Features
| Feature | Design Value |
|---|---|
| No crowbar output switching | Eliminates supply-line transients during output transitions - improves stability in poorly decoupled or shared-power systems. |
| Internal 1.182V ±2% reference | Reduces BOM count by removing external reference ICs; accuracy sufficient for battery monitor and alarm thresholds. |
| HYST pin-based hysteresis | Enables consistent, predictable hysteresis (up to 100mV) across both comparators using only two resistors - no layout-sensitive feedback traces. |
| Rail-to-rail input capability | Accepts inputs from V− to V+ − 1.3V - supports direct sensing of 0V–3.3V battery voltages without level-shifting circuitry. |
| 40mA continuous output sourcing | Drives LEDs, optocouplers, or MOSFET gates directly - avoids buffer stages in low-power indicator and power-control circuits. |
Applications
| Battery Voltage Monitoring | Window Comparator |
|---|---|
|
Use Scenario: Monitoring Li-ion cell voltage (2.5V–4.2V) to trigger low-battery warning and overvoltage shutdown in portable medical devices. IC Role / Device Role / Timing Role: Dual comparator compares cell voltage against upper/lower thresholds derived from REF and resistor dividers; HYST pin configures hysteresis to prevent chatter near trip points. Use Value: Eliminates external reference and hysteresis resistors, reducing component count by ≥4 parts while maintaining ±1% threshold accuracy over 0°C–70°C. |
Use Scenario: Detecting valid 5V ±5% supply in industrial controllers, asserting "power good" only when voltage stays within 4.75V–5.25V window. IC Role / Device Role / Timing Role: MAX932CUA-T's two comparators implement undervoltage (OUTA) and overvoltage (OUTB) detection; AND-gated outputs generate clean power-good signal. Use Value: Internal REF ensures matched threshold tracking across temperature; HYST pin simplifies hysteresis tuning to ±5mV at input, rejecting ripple-induced false triggers. |
| Oscillator Circuit | Auto-Shutoff Power Switch |
|
Use Scenario: Building low-frequency relaxation oscillator (<1Hz) for periodic sensor wake-up in wireless IoT nodes. IC Role / Device Role / Timing Role: Comparator A forms Schmitt trigger with RC network on HYST and REF; comparator B buffers output - no external hysteresis components needed. Use Value: Propagation delay stability (±1µs over temp) and sub-4µA quiescent current enable oscillator duty cycles >99.9%, maximizing battery life. |
Use Scenario: Enabling timed auto-off for handheld test equipment after 60 seconds of inactivity to conserve battery. IC Role / Device Role / Timing Role: Comparator A monitors RC decay voltage; comparator B drives MOSFET gate - internal REF and HYST set precise 60s timeout with <±5% error. Use Value: 40mA output directly switches load switch FET; total solution draws <5µA in standby - extends CR2032 life to >2 years. |
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; 8-pin SO package (4.9mm × 6.0mm) vs. µMAX (3mm × 3mm) - larger footprint, higher θJA. | Preferred for through-hole prototyping or legacy board reuse; less suitable for space-constrained wearables. | Select MAX932CSA+ when board real estate permits larger package and hand-soldering is required. |
| MAX922CUA-T | 1% reference accuracy (vs. 2%), same pinout and quiescent current; otherwise identical functionality and timing. | Better suited for precision thresholding (e.g., medical sensor alarms) where ±10mV absolute trip tolerance is mandatory. | Choose MAX922CUA-T when reference accuracy dominates over cost; note 1% grade increases unit price ~18%. |
Compared with MAX932CSA+, the MAX932CUA-T saves 58% PCB area and improves thermal performance; versus MAX922CUA-T, it trades 1% reference accuracy for lower cost and identical low-power operation - making it optimal for cost-sensitive, space-constrained battery monitors where ±2% reference drift is acceptable.
Availability
MAX932CUA-T is available at Aetrix Electronics and suitable for battery-powered systems, threshold detectors, and oscillator circuits requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
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, sensing, and interface applications, with emphasis on low-power innovation.
The MAX931–MAX934 family was engineered for ultra-low-power threshold detection in portable and remote systems, integrating reference and hysteresis control to minimize external components while maintaining robust noise immunity.
FAQ
What is the operating temperature range for MAX932CUA-T?
The MAX932CUA-T is specified for the commercial temperature range of 0°C to +70°C. This rating applies specifically to the CUA-grade device in the 8-pin µMAX package, as confirmed in the Ordering Information table and Absolute Maximum Ratings section of the datasheet. Operation outside this range may result in degraded reference accuracy or increased input offset voltage.
Can MAX932CUA-T operate from a 3V single supply?
Yes, MAX932CUA-T operates from a single +2.5V to +11V supply, including +3V. At 3V, supply current remains below 4µA, input common-mode range extends from V− to V+ − 1.3V (i.e., 0V to 1.7V), and propagation delay increases to 14µs - all verified in the Electrical Characteristics tables for 3V operation. The internal 1.182V reference remains functional and stable.
How is hysteresis implemented on MAX932CUA-T?
MAX932CUA-T uses the HYST pin (Pin 6) to implement hysteresis: connect R1 between REF and HYST, and R2 between HYST and V−. The hysteresis band equals twice (REF − VHYST); maximum VHYST = REF − 50mV yields up to 100mV hysteresis. This method applies identically to both comparators and requires no external feedback paths - a key differentiator from standard comparators.
Is MAX932CUA-T pin-compatible with MAX922CUA-T?
No, MAX932CUA-T is not pin-compatible with MAX922CUA-T. Although both are dual comparators in µMAX packages, the MAX922 lacks the HYST pin and internal reference - its Pin 6 is NC (no connect), whereas MAX932CUA-T uses Pin 6 as the active HYST input. Substituting one for the other would require PCB redesign and external reference/hysteresis circuitry.
What is the maximum output source current for MAX932CUA-T?
MAX932CUA-T provides continuous output source current of 40mA, as stated in the Features list and verified in Typical Operating Characteristics (Figure MAX921/924-TOC17). Short-duration pulses up to 100mA are possible at V+ = 5V, provided package power dissipation limits (330mW at +70°C) are not exceeded - critical for driving LEDs or small solenoids in burst-mode applications.
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:
- 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-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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