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Analog Devices Inc./Maxim Integrated MAX932CSA-T
- Part No.:
- MAX932CSA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX932CSA-T.pdf
- Description:
- IC COMPARATOR 2 W/VOLT REF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,371
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Product details
Overview
MAX932CSA-T from Maxim Integrated is a dual micropower 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 MAX932CSA-T datasheet, MAX932CSA-T pinout, MAX932CSA-T application, or MAX932CSA-T equivalent, key selection criteria include guaranteed hysteresis programmability without external feedback, 12µs propagation delay at 10mV overdrive, continuous 40mA output source capability, and compatibility with 3V/5V single-supply systems requiring rail-to-rail input operation and stable internal reference.
Technical Context
The MAX932CSA-T integrates two independent comparators sharing a single internal 1.182V reference and one HYST pin for simultaneous hysteresis configuration 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.
Input voltage range spans from V− to within 1.3V of V+, enabling direct sensing of signals near the positive rail. The HYST pin accepts voltages from (REF − 50mV) to REF, allowing precise 100mV maximum hysteresis band control using two external resistors-no op-amp or complex equations required.
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 Supply Current | <4µA max over 0°C to +70°C - enables multi-year battery life in always-on monitoring circuits. |
| Reference Voltage | 1.182V ±2% (0°C to +70°C) referenced to V− - provides stable trip point without external precision reference IC. |
| Propagation Delay | 12µs typical at 10mV overdrive - ensures timely response in oscillator and alarm timing applications. |
| Output Drive | Continuous 40mA source / 5mA sink - directly drives LEDs, small relays, or logic inputs without buffer stages. |
| Input Common-Mode Range | V− to (V+ − 1.3V) - allows detection of signals up to 1.3V below V+, critical for high-side sensing in low-voltage systems. |
| Hysteresis Control | Programmable via HYST pin (REF − 50mV to REF) - enables precise noise immunity tuning with only two resistors per comparator pair. |
Pinout & Package
MAX932CSA-T is housed in an 8-pin SO (Small Outline) package, surface-mount, with standard 1.27mm pitch and JEDEC MS-012AC footprint. Pin 1 is marked with a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A output: push-pull, swings from V+ to V−; sinks and sources current; no external pull-up needed. |
| 2 | V− | Negative supply rail: connect to GND for single-supply operation; defines reference ground for REF and inputs. |
| 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: identical electrical specs to INA+; supports differential or single-ended configurations. |
| 5 | INB+ | Noninverting input of Comparator B: shares same input structure and voltage range as INA+. |
| 6 | HYST | Hysteresis control input: sets upper/lower thresholds by voltage divider between REF and V−; range = REF − 50mV to REF. |
| 7 | REF | Internal 1.182V reference output: referenced to V−, ±2% accuracy, capable of sourcing 15µA/sinking 8µA. |
| 8 | V+ | Positive supply rail: accepts +2.5V to +11V; powers comparators, reference, and output stage. |
Key Features
| Feature | Design Value |
|---|---|
| No crowbar switching current | Eliminates supply-line transients during output transitions, removing need for heavy bypassing and improving layout robustness. |
| Programmable hysteresis via HYST pin | Enables precise, matched hysteresis on both comparators using only two resistors-no external op-amp or feedback network. |
| Rail-to-rail input capability | Input common-mode extends to V− and within 1.3V of V+, supporting high-side sensing and wide dynamic range signal monitoring. |
| 40mA continuous output source | Drives LEDs, MOSFET gates, or logic loads directly-reduces BOM count and PCB area vs. buffered solutions. |
| Ultra-low 4µA quiescent current | Enables >10-year battery life in coin-cell–powered devices such as smoke detectors or remote sensors. |
Applications
| Battery-Powered Threshold Detector | Window Comparator for Power Monitoring |
|---|---|
|
Use Scenario: Detecting low-battery condition in handheld medical devices using a single 3V coin cell. IC Role / Device Role / Timing Role: MAX932CSA-T compares battery voltage against 2.0V and 2.4V thresholds using its internal reference and resistor dividers; HYST pin configures 100mV hysteresis to prevent chatter near cutoff. Use Value: Eliminates need for external reference and discrete hysteresis components, reducing solution size by 40% and power consumption by 95% vs. discrete comparator + reference design. |
Use Scenario: Monitoring 5V system supply for undervoltage (4.5V) and overvoltage (5.5V) faults in industrial PLC I/O modules. IC Role / Device Role / Timing Role: MAX932CSA-T implements dual-threshold detection: one comparator monitors rising edge (overvoltage), the other falling edge (undervoltage); outputs combined via AND gate for "power-good" status. Use Value: Internal reference ensures consistent trip points across temperature; programmable hysteresis prevents false triggering during supply ripple; dual comparator integration saves 33% board space vs. two separate comparators. |
| Oscillator Circuit for Low-Power Sensors | Auto-Off Power Switch in Portable Instruments |
|
Use Scenario: Generating 1Hz clock signal for periodic wake-up of ultra-low-power environmental sensors. IC Role / Device Role / Timing Role: MAX932CSA-T configured as relaxation oscillator: one comparator charges capacitor via current source, second comparator discharges it when threshold reached; HYST pin sets hysteresis to define frequency stability. Use Value: 4µA quiescent current enables oscillator to consume <1µA average current; integrated reference removes timing drift from external component tolerances. |
Use Scenario: Enabling timed shutdown of LCD backlight after user inactivity in portable test equipment. IC Role / Device Role / Timing Role: MAX932CSA-T acts as auto-off controller: one comparator monitors RC timer voltage; second comparator drives MOSFET switch; HYST pin adds 50mV hysteresis to prevent oscillation during power-down transition. Use Value: 40mA output directly drives gate of logic-level N-channel MOSFET; internal reference replaces 3 external components; total solution draws only 3.5µA in standby. |
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 industrial temperature range vs. MAX932CSA-T's 0°C to +70°C commercial range. | Suitable for automotive cabin modules or outdoor industrial sensors requiring extended thermal operation. | Select MAX932ESA when operating ambient exceeds +70°C or requires −40°C startup capability; otherwise MAX932CSA-T offers cost advantage for consumer/portable use. |
| MAX922CSA | Pin-compatible dual comparator with 1% accurate reference (vs. 2% in MAX932CSA-T); higher quiescent current (6µA vs. 4µA). | Better suited for precision voltage monitoring where reference accuracy dominates over battery life. | Choose MAX922CSA when ±1% reference tolerance is mandatory and 50% higher supply current is acceptable; MAX932CSA-T remains optimal for ultra-low-power priority. |
Compared with MAX932ESA, MAX932CSA-T trades extended temperature rating for lower cost and same ultra-low power; compared with MAX922CSA, it sacrifices 1% reference accuracy to achieve 33% lower quiescent current-making it the preferred choice for battery-critical, cost-sensitive, commercial-grade applications.
Availability
MAX932CSA-T is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical devices, industrial power supervision, and low-power sensor interface applications requiring stable component supply and long-lifecycle support.
Supply support for MAX932CSA-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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer markets.
The MAX931–MAX934 family was designed specifically for ultra-low-power, single-supply comparator applications requiring integrated precision reference and programmable hysteresis-targeting portable, battery-operated, and energy-harvesting systems.
FAQ
What is the operating temperature range for MAX932CSA-T?
The MAX932CSA-T is specified for 0°C to +70°C commercial temperature range. This is confirmed in the Ordering Information table, where "C" suffix denotes commercial grade. It is not rated for extended industrial (−40°C to +85°C) operation-use MAX932ESA for that range. All electrical characteristics in the datasheet's "ELECTRICAL CHARACTERISTICS-5V Operation" section apply across this 0°C to +70°C range unless otherwise noted.
Does MAX932CSA-T require external hysteresis components?
No, MAX932CSA-T does not require external hysteresis components for basic implementation. Its dedicated HYST pin allows hysteresis programming using just two resistors between REF and V−, eliminating need for external op-amps or feedback networks. The datasheet confirms this method works for both comparators simultaneously and provides exact equations for R1/R2 calculation based on desired hysteresis band.
Can MAX932CSA-T operate from a 3V single supply?
Yes, MAX932CSA-T is fully specified for 3V single-supply operation. The Absolute Maximum Ratings list +2.5V minimum supply, and Electrical Characteristics tables explicitly include "ELECTRICAL CHARACTERISTICS-3V Operation" with validated parameters including supply current (2.4–3.0µA), input offset voltage (±10mV), and response time (14µs). Input common-mode range extends from V− (GND) to (V+ − 1.3V) = 1.7V, supporting most 3V sensor interfaces.
What is the output voltage swing of MAX932CSA-T?
MAX932CSA-T outputs swing from V+ to V−. With V− tied to GND (single-supply mode), OUTA and OUTB swing from V+ down to GND. The datasheet specifies output high voltage as (V+ − 0.4V) and output low voltage as (GND + 0.4V) at 15µA load, confirming TTL/CMOS compatibility when V+ = 5V ±10%. No pull-up resistors are needed due to true push-pull architecture.
Is MAX932CSA-T pin-compatible with any 1% reference comparators?
No, MAX932CSA-T is not pin-compatible with 1% reference comparators. The datasheet explicitly states: "The MAX932 and MAX922 are not pin-compatible." While MAX931/MAX933/MAX934 are pin-compatible with MAX921/MAX923/MAX924 respectively, MAX932 has no pin-compatible 1% counterpart. Engineers must redesign PCB layout to substitute MAX922 or similar dual comparators with separate reference.
MAX932CSA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SOIC
MAX932CSA-T FAQ
1.How can I place an order for MAX932CSA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX932CSA-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 MAX932CSA-T reliable?
The price and inventory of MAX932CSA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX932CSA-T is usually 5 days.
3.What payment methods are accepted for MAX932CSA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX932CSA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX932CSA-T?
MAX932CSA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX932CSA-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 MAX932CSA-T?
For technical support, including MAX932CSA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX932CSA-T requirements.
6.How does Aetrix verify that MAX932CSA-T is sourced from the original manufacturer or authorized distributors?
All MAX932CSA-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 MAX932CSA-T meets industry standards.
7.What is the process for return or replacement of MAX932CSA-T?
All MAX932CSA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX932CSA-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 MAX932CSA-T part is unused and in its original packaging.
Return procedure for MAX932CSA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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