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Analog Devices Inc./Maxim Integrated MAX933CSA+T
- Part No.:
- MAX933CSA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX933CSA+T.pdf
- Description:
- IC COMPARATOR 2 W/VOLT REF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,063
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Product details
Overview
The MAX933CSA+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. It targets battery-powered threshold detection and window comparator circuits where ultra-low quiescent current (<4µA over temperature) and rail-to-rail input range (V− to V+ −1.3V) are critical.
For engineers reviewing the MAX933CSA+T datasheet, MAX933CSA+T pinout, MAX933CSA+T application, or MAX933CSA+T equivalent, this page delivers verified specifications, validated dual-comparator use cases, confirmed pin mapping for 8-pin SO package, and two rigorously cross-checked alternative parts for low-power reference-integrated comparators.
Technical Context
The MAX933CSA+T integrates two independent comparators sharing one internal 1.182V reference and a dedicated HYST terminal for resistor-programmable hysteresis without external feedback. Its output stage eliminates crowbar current during transitions, suppressing supply-line parasitic feedback and enabling stable operation even with suboptimal PCB layout.
Input common-mode range extends from V− to (V+ −1.3V); outputs swing from V+ to V− (not GND), requiring V− connection to ground for single-supply TTL compatibility. The device is specified for 0°C to +70°C and draws ≤4µA supply current at +25°C with 100mV overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +11V single supply; ±1.25V to ±5.5V dual supply - supports both battery-powered and bipolar signal monitoring systems |
| Quiescent Supply Current | <4µA over temperature - enables multi-year operation in coin-cell–powered devices |
| 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 (10mV overdrive) - balances speed and ultra-low power for slow-varying thresholds like battery voltage monitoring |
| Output Drive Capability | Sources ≥40mA continuously; sinks ≥8mA - directly drives LEDs, small relays, or logic inputs without buffer stages |
| Input Common-Mode Range | V− to (V+ −1.3V) - allows sensing near ground or high-side signals in single-supply configurations |
| Hysteresis Control | HYST pin accepts 1.132V to 1.182V - enables precise, resistor-set hysteresis bands up to 100mV without feedback network design |
Pinout & Package
MAX933CSA+T is housed in an 8-pin SO (Small Outline) package, surface-mount, RoHS-compliant, with standard 1.27mm pitch and JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTB | Comparator B output; sinks and sources current; swings from V+ to V− - requires V− tied to GND for single-supply TTL-level output |
| 2 | V− | Negative supply rail; connect to GND in single-supply mode - defines reference for REF and sets lower output swing limit |
| 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 - used with INA+ and HYST to configure window or threshold detectors |
| 5 | INB+ | Noninverting input of comparator B - paired with INB− for second independent comparison channel |
| 6 | REF | 1.182V ±2% reference output referenced to V− - supplies hysteresis and threshold-setting networks; not bypassed |
| 7 | V+ | Positive supply rail - supports wide input voltage range and full output swing; max 12V absolute rating |
| 8 | OUTA | Comparator A output; sinks and sources current; swings from V+ to V− - identical drive capability and rail constraints as OUTB |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | <4µA over temperature - extends battery life in portable instrumentation and remote sensors |
| Dual comparator + reference integration | Single 8-pin SO package replaces discrete op-amp + reference + resistors - reduces BOM count and board area by >40% |
| HYST pin for hysteresis programming | Eliminates need for external positive-feedback resistors - simplifies design of noise-immune threshold detectors |
| No crowbar output switching | Prevents supply-line glitches during output transitions - removes requirement for heavy local decoupling |
| Rail-to-rail input range | V− to (V+ −1.3V) - enables direct sensing of ground-referenced or high-side signals without level-shifting circuitry |
Applications
| Battery Voltage Monitoring | Window Comparator |
|---|---|
|
Use Scenario: Detecting undervoltage (e.g., <4.2V) and overvoltage (e.g., >4.8V) on a Li-ion battery pack to trigger charge control or shutdown. IC Role / Device Role / Timing Role: Dual comparator compares battery voltage against two reference-derived thresholds; HYST pin configures 50mV hysteresis per channel to prevent chatter near trip points. Use Value: Single MAX933CSA+T replaces two comparators + one reference IC + four resistors - cuts component count and improves thermal tracking of thresholds. |
Use Scenario: Validating regulated 5V supply integrity in embedded systems by asserting "power good" only when voltage stays within 4.75V–5.25V window. IC Role / Device Role / Timing Role: Comparator A monitors lower threshold (4.75V), Comparator B monitors upper threshold (5.25V); ANDed outputs generate clean active-high flag. Use Value: Internal 1.182V reference ensures matched temperature drift between thresholds - eliminates error from separate references. |
| Oscillator Circuit | Alarm Threshold Detection |
|
Use Scenario: Building a relaxation oscillator using hysteresis and RC timing network for low-frequency clock generation (e.g., 1Hz wake-up timer). IC Role / Device Role / Timing Role: One comparator acts as Schmitt trigger; HYST and REF pins set hysteresis band; output charges/discharges capacitor through resistor. Use Value: Programmable hysteresis via two resistors enables precise frequency tuning without changing capacitor values - simplifies production calibration. |
Use Scenario: Triggering audible/visual alarm when temperature sensor output exceeds preset safety limit (e.g., 85°C in motor controller). IC Role / Device Role / Timing Role: Comparator A compares sensor voltage to REF-derived threshold; HYST pin adds 100mV hysteresis to suppress false alarms from noise. Use Value: 40mA source capability directly drives buzzer or LED without transistor buffer - reduces bill-of-materials and failure points. |
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 |
|---|---|---|---|
| MAX933ESA+ | Same functionality and pinout; rated for −40°C to +85°C industrial temperature range vs. 0°C to +70°C for MAX933CSA+T | Required for automotive cabin modules or outdoor industrial sensors needing extended thermal margin | Select MAX933ESA+ when operating ambient exceeds +70°C or requires AEC-Q200 alignment |
| MAX923CSA+ | Pin-compatible dual comparator with 1% accurate (±1%) internal reference (1.200V) instead of 2% (1.182V) | Used where tighter trip-point accuracy is mandatory, e.g., medical-grade battery cutoff or precision power sequencing | Choose MAX923CSA+ when reference tolerance must be ≤±1% and system calibration budget is constrained |
Compared with MAX933CSA+T, MAX933ESA+ offers wider temperature coverage without layout change, while MAX923CSA+ trades ±2% reference accuracy for ±1% at same package and pinout - enabling drop-in upgrades where precision outweighs cost sensitivity.
Availability
MAX933CSA+T is available at Aetrix Electronics and suitable for battery-powered systems, threshold detectors, and window comparators requiring stable component supply across commercial temperature range (0°C to +70°C) and long-lifecycle support.
Supply support for MAX933CSA+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, cost-sensitive systems needing integrated reference and hysteresis - targeting portable instrumentation, energy harvesting nodes, and battery management subsystems.
FAQ
What is the maximum supply voltage for MAX933CSA+T?
The MAX933CSA+T supports a single-supply voltage range of +2.5V to +11V. Absolute maximum rating is +12V between V+ and V−. Exceeding +11V may degrade reference accuracy or increase quiescent current beyond specification. Operation at +11V is valid for applications such as 9V battery-powered systems with minimal dropout regulation.
Does MAX933CSA+T require external bypass capacitors?
No external bypass capacitors are required for the MAX933CSA+T if the power supply impedance is low. However, a 100nF ceramic capacitor placed close to the V+ and V− pins is recommended when supply leads are long or source impedance is high. The REF pin must never be bypassed, as it degrades reference stability and increases noise.
Can MAX933CSA+T operate from a 3V supply?
Yes, MAX933CSA+T is fully specified for 3V single-supply operation. At V+ = 3V, supply current remains ≤4µA, propagation delay is 14µs (10mV overdrive), and input common-mode range extends from V− to 1.7V. This makes MAX933CSA+T ideal for 3.3V or two-cell alkaline systems.
How is hysteresis configured on MAX933CSA+T?
Hysteresis on MAX933CSA+T is configured using the HYST pin: connect R1 between REF and HYST, and R2 between HYST and V−. The hysteresis band equals twice (REF − VHYST), with VHYST adjustable from REF down to (REF − 50mV). For 100mV total hysteresis, set VHYST = REF − 50mV using appropriate R1/R2 ratios.
Is MAX933CSA+T pin-compatible with MAX923CSA+?
Yes, MAX933CSA+T is pin-compatible with MAX923CSA+. Both are 8-pin SO-packaged dual comparators with identical pinout (OUTA, V−, INA+, INB−, INB+, REF, V+, OUTB). The key difference is reference accuracy: MAX933CSA+T uses 1.182V ±2%, while MAX923CSA+ uses 1.200V ±1%. No PCB changes are needed for substitution.
MAX933CSA+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:
- 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-SOIC
MAX933CSA+T FAQ
1.How can I place an order for MAX933CSA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX933CSA+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 MAX933CSA+T reliable?
The price and inventory of MAX933CSA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX933CSA+T is usually 5 days.
3.What payment methods are accepted for MAX933CSA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX933CSA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX933CSA+T?
MAX933CSA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX933CSA+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 MAX933CSA+T?
For technical support, including MAX933CSA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX933CSA+T requirements.
6.How does Aetrix verify that MAX933CSA+T is sourced from the original manufacturer or authorized distributors?
All MAX933CSA+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 MAX933CSA+T meets industry standards.
7.What is the process for return or replacement of MAX933CSA+T?
All MAX933CSA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX933CSA+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 MAX933CSA+T part is unused and in its original packaging.
Return procedure for MAX933CSA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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