My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX931CUA+TG002
- Part No.:
- MAX931CUA+TG002
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- -
- Datasheet:
-
MAX931CUA+TG002.pdf
- Description:
- INTEGRATED CIRCUIT
- Quantity:
- Payment:
- Shipping:
Inventory:3,824
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX931CUA+TG002 from Maxim Integrated is a single micropower comparator with integrated 1.182V ±2% bandgap reference, programmable hysteresis via HYST pin, TTL/CMOS-compatible output sinking and sourcing up to 50mA/40mA, and 4µA max supply current over temperature - designed for ultra-low-power threshold detection in battery-powered systems operating from +2.5V to +11V single supply.
For engineers reviewing the MAX931CUA+TG002 datasheet, MAX931CUA+TG002 pinout, MAX931CUA+TG002 application, or MAX931CUA+TG002 equivalent, key selection considerations include its rail-to-rail input range (V− to V+ −1.3V), absence of crowbar current during switching, continuous 40mA source capability, and compatibility with 0°C to +70°C commercial temperature operation in 8-pin µMAX package.
Technical Context
The MAX931CUA+TG002 integrates a precision 1.182V reference referenced to V− (not GND), enabling self-contained threshold generation without external components. Its comparator features an input common-mode range extending from V− to V+ −1.3V and operates with <4µA quiescent current across temperature.
Unlike conventional comparators, its output stage eliminates switching crowbar current, minimizing parasitic supply feedback and improving stability in noisy or poorly decoupled layouts. Hysteresis is implemented externally using two resistors between REF and HYST pins, supporting adjustable hysteresis bands up to 100mV without feedback networks or complex calculations.
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 battery and industrial rails. |
| Quiescent Supply Current | <4µA over temperature; supports multi-year operation on coin cells or energy-harvesting sources. |
| Reference Voltage | 1.182V ±2% at 0°C to +70°C; stable internal bandgap reference eliminates need for external voltage reference ICs. |
| Input Common-Mode Range | V− to V+ −1.3V; allows detection of signals near ground or high-side sensing without level-shifting. |
| Output Drive Capability | Sources 40mA continuously, sinks 50mA; directly drives LEDs, small relays, or logic inputs without external buffers. |
| Propagation Delay | 12µs typical at 10mV overdrive; balances speed and ultra-low power for non-critical timing applications. |
| Reference Load Capacity | Sinks 8µA / sources 15µA; sufficient to bias hysteresis resistors or feed low-leakage comparator inputs. |
Pinout & Package
Package: 8-pin µMAX (3mm × 3mm, 0.5mm pitch), thermally enhanced, lead-free, RoHS-compliant surface-mount package rated for 0°C to +70°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Comparator output | Sinks and sources current; swings from V+ to GND - TTL/CMOS compatible with +5V supply. |
| 2 - V− | Negative supply | Connect to GND for single-supply operation; output swing referenced to this pin. |
| 3 - IN+ | Noninverting input | Accepts signals from V− to V+ −1.3V; high-impedance (±0.01nA leakage) for minimal loading. |
| 4 - IN− | Inverting input | Same input range and leakage as IN+; used for threshold comparison against reference or sensor signal. |
| 5 - HYST | Hysteresis control | Adjusts hysteresis band (up to 100mV) via resistor divider from REF; no external feedback required. |
| 6 - REF | Reference output | 1.182V ±2% w.r.t. V−; powers HYST network and provides stable threshold baseline. |
| 7 - V+ | Positive supply | Accepts +2.5V to +11V; supplies both comparator core and reference circuitry. |
| 8 - GND | Ground | Connect to V− for single-supply mode; serves as return path for output load current. |
Key Features
| Feature | Design Value |
|---|---|
| No crowbar current during switching | Eliminates supply-line glitches and parasitic feedback, enabling stable operation without strict PCB layout constraints. |
| Programmable hysteresis via HYST pin | Enables noise-immune threshold detection using only two external resistors - no op-amp feedback loop needed. |
| Internal 1.182V ±2% reference | Reduces BOM count and board space by replacing discrete reference ICs in low-precision threshold applications. |
| Rail-to-rail input range (V− to V+ −1.3V) | Supports direct sensing of battery voltage, sensor outputs, or rail monitors without input attenuation or level shifters. |
| 40mA continuous output source current | Drives LEDs, MOSFET gates, or logic inputs directly - avoids external driver stages in portable instrumentation. |
Applications
| Battery-Powered Threshold Detector | Window Comparator |
|---|---|
Use Scenario: Monitoring lithium coin-cell voltage to trigger auto-shutdown before deep discharge. IC Role / Device Role / Timing Role: Single comparator compares battery voltage against 1.182V reference via resistor divider; HYST pin adds 50mV hysteresis to prevent chatter near cutoff. Use Value: Draws only 3.5µA quiescent current while providing reliable, self-contained undervoltage lockout. | Use Scenario: Detecting valid 5V supply range (4.5V–5.5V) in embedded controllers with power-good signaling. IC Role / Device Role / Timing Role: Dual comparator (e.g., MAX933) uses shared REF and HYST to implement independent upper/lower thresholds. Use Value: Eliminates need for two separate references and reduces component count versus discrete solutions. |
| Oscillator Circuit | Alarm Circuit |
Use Scenario: Building low-power relaxation oscillator for LED blink timing or watchdog timeout. IC Role / Device Role / Timing Role: Comparator configured with RC network and HYST pin to generate hysteresis-based square wave. Use Value: Achieves sub-µA average current consumption while maintaining stable frequency over temperature. | Use Scenario: Smoke detector analog front-end comparing ionization chamber output to alarm threshold. IC Role / Device Role / Timing Role: Comparator detects smoke-induced current drop; REF provides stable trip point; HYST prevents false alarms from EMI. Use Value: Enables Class A UL-certified designs with <4µA standby current and robust noise immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator-with-reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX921CUA+ | 1% reference accuracy (vs. 2%), same pinout and package; higher precision but 20% higher quiescent current (5µA). | Required where reference drift must be minimized across -40°C to +85°C; not suitable for cost-sensitive 0°C to +70°C designs. | Select MAX921CUA+ only when ±1% reference tolerance is mandatory and supply current budget allows +1µA overhead. |
| TLV3011DBVR | Single comparator with 1.25V reference, 1.8V–5.5V supply, 1.2µA IQ; no HYST pin - hysteresis requires external feedback. | Lower power and wider supply range, but lacks integrated hysteresis control and has lower output drive (10mA sink/source). | Prefer TLV3011DBVR for sub-2µA systems where external hysteresis is acceptable and output load is light. |
Compared with MAX921CUA+, the MAX931CUA+TG002 trades reference accuracy for lower supply current and simpler hysteresis implementation; compared with TLV3011DBVR, it offers higher output drive and built-in HYST functionality at the cost of slightly higher IQ and narrower supply range.
Availability
MAX931CUA+TG002 is available at Aetrix Electronics and suitable for battery-powered systems, threshold detectors, window comparators, oscillator circuits, and alarm circuits requiring stable component supply with guaranteed 0°C to +70°C operation and long-term availability.
Supply support for MAX931CUA+TG002 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 applications.
The MAX931CUA+TG002 belongs to the MAX931–MAX934 micropower comparator family, engineered specifically for ultra-low-power sensing and threshold detection in space-constrained, battery-operated equipment.
FAQ
What is the operating temperature range for the MAX931CUA+TG002?
The MAX931CUA+TG002 is specified for commercial temperature operation from 0°C to +70°C. It is packaged in an 8-pin µMAX package and does not support extended or automotive temperature ranges - for -40°C to +85°C operation, consider the MAX931ESA variant instead. The reference voltage accuracy of ±2% applies within this 0°C to +70°C range.
Does the MAX931CUA+TG002 require external hysteresis components?
Yes - the MAX931CUA+TG002 uses the HYST pin to implement programmable hysteresis with two external resistors (R1 between REF and HYST, R2 between HYST and V−). This method avoids feedback loops and provides precise, predictable hysteresis bands up to 100mV. No hysteresis is applied if HYST is tied directly to REF.
Can the MAX931CUA+TG002 operate from a 3V supply?
Yes - the MAX931CUA+TG002 operates from +2.5V to +11V single supply, including 3V. At 3V, supply current remains below 4µA, input common-mode range extends from GND to 1.7V, and propagation delay increases to ~14µs (vs. 12µs at 5V). Reference output remains stable at 1.182V ±2%.
Is the MAX931CUA+TG002 pin-compatible with any 1% reference comparators?
Yes - the MAX931CUA+TG002 is pin-compatible with the MAX921CUA+, which features a 1% accurate reference and identical 8-pin µMAX footprint and pinout. However, MAX921CUA+ draws ~5µA supply current and is rated for -40°C to +85°C, so substitution requires validation of temperature and power requirements.
What is the maximum load the MAX931CUA+TG002 output can drive?
The MAX931CUA+TG002 output can continuously source up to 40mA and sink up to 50mA. At V+ = 5V, it maintains VOH ≥ V+ − 0.4V (≥4.6V) with 15mA load and VOL ≤ 0.4V with 15mA sink. Short-duration pulses up to 100mA are possible if power dissipation limits (330mW in µMAX) are observed.
MAX931CUA+TG002 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- -
- Number of Elements:
- -
- Output Type:
- -
- Voltage - Supply, Single/Dual (±):
- -
- :
- -
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- -
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- :
- -
MAX931CUA+TG002 FAQ
1.How can I place an order for MAX931CUA+TG002 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX931CUA+TG002 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 MAX931CUA+TG002 reliable?
The price and inventory of MAX931CUA+TG002 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX931CUA+TG002 is usually 5 days.
3.What payment methods are accepted for MAX931CUA+TG002?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX931CUA+TG002 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX931CUA+TG002?
MAX931CUA+TG002 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX931CUA+TG002 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 MAX931CUA+TG002?
For technical support, including MAX931CUA+TG002 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX931CUA+TG002 requirements.
6.How does Aetrix verify that MAX931CUA+TG002 is sourced from the original manufacturer or authorized distributors?
All MAX931CUA+TG002 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 MAX931CUA+TG002 meets industry standards.
7.What is the process for return or replacement of MAX931CUA+TG002?
All MAX931CUA+TG002 units undergo pre-shipment inspection (PSI). If there is an issue with MAX931CUA+TG002, 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 MAX931CUA+TG002 part is unused and in its original packaging.
Return procedure for MAX931CUA+TG002:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX931CUA+TG002 Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP USA Inc.
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
