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Analog Devices Inc./Maxim Integrated MAX974ESE+T
- Part No.:
- MAX974ESE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX974ESE+T.pdf
- Description:
- IC COMPARATR 4 W/VOLT REF 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,392
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Product details
Overview
MAX974ESE+T from Maxim Integrated is a quad, ultra-low-power, open-drain comparator with integrated 1.182V ±1% precision bandgap reference and no internal hysteresis. It operates from single 2.5V–11V or dual ±1.25V–±5.5V supplies, draws ≤8.5µA supply current over temperature, supports rail-to-rail input voltage range (V− to V+ − 1.3V), and features separate GND pin for output stage-enabling bipolar-to-single-ended level translation in battery-powered threshold detection systems.
For engineers reviewing the MAX974ESE+T datasheet, MAX974ESE+T pinout, MAX974ESE+T application, or MAX974ESE+T equivalent, key selection criteria include its quad open-drain topology, ±1% reference accuracy over −40°C to +85°C, 12µs propagation delay at 10mV overdrive, separate output ground pin, and compatibility with low-voltage (≥2.5V) single-supply operation.
Technical Context
The MAX974ESE+T integrates four independent comparators sharing a common precision 1.182V ±1% reference referenced to V−, not GND. Its open-drain outputs sink to GND (not V−), enabling direct interfacing with higher-voltage logic or level-shifting without external components.
Unlike MAX971/MAX982/MAX973 variants, the MAX974ESE+T lacks an internal HYST pin and programmable hysteresis circuitry-requiring external positive feedback for hysteresis implementation. Input common-mode range extends from V− to (V+ − 1.3V), and absolute maximum output voltage reaches 11V above V−, supporting robust wire-OR configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | Single 2.5V to 11V or dual ±1.25V to ±5.5V - enables flexible power architecture in mixed-voltage systems. |
| Quiescent Supply Current | ≤8.5µA over −40°C to +85°C - ensures multi-year battery life in always-on sensing nodes. |
| Reference Voltage Accuracy | 1.182V ±1% (−40°C to +85°C) - provides stable, temperature-compensated threshold for precision undervoltage/overvoltage detection. |
| Propagation Delay | 12µs at 10mV overdrive - balances speed and ultra-low power for non-critical timing applications. |
| Input Common-Mode Range | V− to (V+ − 1.3V) - supports wide dynamic range signal monitoring near supply rails. |
| Output Sink Capability | 50mA max at VOUT = 0.4V - drives standard pull-up resistors and logic inputs directly. |
| Output Voltage Range | 0V to 11V (referred to V−) - allows level translation up to 11V even with no V+ applied. |
Pinout & Package
MAX974ESE+T is housed in a 16-pin narrow SO (SOICN) package with 150-mil body width and standard 0.050″ lead pitch. Pin 9 is V−, pin 14 is GND (output-stage ground), and pin 8 is REF - all critical for correct biasing and level-shifting operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 15, 16 | OUTA, OUTB, OUTC, OUTD | Open-drain comparator outputs sinking to GND - enable wired-OR logic and interface with 3.3V/5V/11V logic families. |
| 3, 4, 10, 11 | INA+, INB+, INC+, IND+ | Noninverting inputs - accept signals from V− to (V+ − 1.3V) for rail-aware threshold comparison. |
| 5, 6, 12, 13 | INA−, INB−, INC−, IND− | Inverting inputs - support differential or single-ended reference-driven comparisons. |
| 7 | V+ | Positive supply - powers internal circuitry and defines upper input/output voltage limits. |
| 9 | V− | Negative supply - reference point for internal reference and comparator inputs; connect to GND in single-supply mode. |
| 8 | REF | 1.182V ±1% bandgap reference output - referenced to V−, not GND; sources/sinks up to 25µA/15µA. |
| 14 | GND | Output-stage ground - isolated from V− to allow true bipolar-to-single-ended conversion (e.g., ±5V input → 0–5V output). |
Key Features
| Feature | Design Value |
|---|---|
| Quad open-drain comparators | Four independent channels in one 16-pin SOIC - reduces board space vs. discrete dual comparators and simplifies window detector design. |
| Separate output GND pin (Pin 14) | Enables level-shifting between bipolar supplies (e.g., ±5V) and single-ended logic (e.g., 3.3V) without external transistors or level shifters. |
| 1.182V ±1% internal reference | Eliminates need for external precision reference IC or resistor divider - improves long-term stability and reduces BOM count in battery monitors. |
| Rail-to-rail input capability | Inputs operate from V− to V+ − 1.3V - supports accurate detection of signals near supply rails in low-voltage systems (e.g., 3V Li-ion battery monitoring). |
| Ultra-low 8.5µA supply current | Enables continuous operation in energy-harvesting or coin-cell-powered devices where µA-level leakage dominates system lifetime. |
Applications
| Battery Voltage Monitor | Power-Good Window Detector |
|---|---|
Use Scenario: Monitoring 3.7V Li-ion battery voltage across full discharge curve (4.2V–3.0V) to trigger low-battery warning and prevent deep discharge. IC Role / Device Role / Timing Role: Quad comparator compares battery voltage against fixed thresholds derived from internal 1.182V reference using resistor dividers; two channels implement hysteresis via external feedback. Use Value: Eliminates external reference and reduces component count by 40% vs. discrete solution; 8.5µA quiescent current extends shelf life in portable medical devices. |
Use Scenario: Validating regulated 5V supply stays within ±5% tolerance (4.75V–5.25V) in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Two comparators form window detector: one senses undervoltage (OUTA active-low), another overvoltage (OUTB active-low); outputs wire-ORed to generate active-high POWER_GOOD signal. Use Value: Internal ±1% reference ensures <±10mV threshold error at 5V; separate GND pin allows direct interfacing with 5V logic without level-shifter ICs. |
| Bipolar-to-Single-Ended Level Translator | Oscillator Timing Circuit |
Use Scenario: Converting ±5V analog sensor output (e.g., strain gauge bridge) to 0–3.3V logic-compatible signal for microcontroller ADC input. IC Role / Device Role / Timing Role: Comparator compares bipolar input against 0V reference (GND tied to V−); open-drain output pulled to 3.3V with external resistor; GND pin isolates output stage from analog ground. Use Value: No external op-amp or level-shifter required; 11V output swing accommodates future 5V logic migration; 12µs delay sufficient for kHz-range sensor sampling. |
Use Scenario: Generating precise square-wave clock for low-power real-time clock (RTC) backup oscillator using RC network and hysteresis. IC Role / Device Role / Timing Role: Single comparator configured as relaxation oscillator with capacitor charging through resistor and discharging via open-drain output; internal reference sets trip points. Use Value: Eliminates external precision voltage reference; ±1% reference tolerance yields <±2% frequency stability over temperature; 8.5µA supply current minimizes RTC battery drain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX984ESE+ | Same quad open-drain topology and 16-pin SO package, but uses ±2% internal reference (1.182V ±2%) and supports identical supply ranges. | Lower reference accuracy makes it suitable for less critical threshold detection (e.g., general-purpose power sequencing), not precision battery monitoring. | Select MAX984ESE+ when ±2% reference tolerance is acceptable and cost optimization is prioritized over precision. |
| LM339DR | Quad open-drain comparator with no internal reference; requires external reference or resistor divider; 20µA typical supply current; wider operating temperature (−40°C to +125°C). | Higher power consumption and lack of integrated reference increase BOM count and reduce accuracy in battery-powered designs. | Choose LM339DR only when extended temperature range (> +85°C) is mandatory and external reference infrastructure already exists. |
Compared with MAX984ESE+, the MAX974ESE+ offers tighter ±1% reference accuracy for improved threshold stability, while LM339DR trades integrated precision for broader temperature rating and higher quiescent current-making MAX974ESE+ optimal for space-constrained, ultra-low-power, precision threshold detection.
Availability
MAX974ESE+T is available at Aetrix Electronics and suitable for battery voltage monitoring, power-good window detection, bipolar-to-single-ended level translation, and low-frequency oscillator circuits requiring stable component supply and guaranteed long-term availability.
Supply support for MAX974ESE+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, automotive, communications, and consumer applications.
The MAX97x/MAX98x comparator family was designed for ultra-low-power, precision threshold detection in battery-operated and energy-sensitive systems-emphasizing micropower operation, integrated references, and flexible supply architectures.
FAQ
What is the reference voltage accuracy of the MAX974ESE+T over temperature?
The MAX974ESE+T features a 1.182V internal bandgap reference with ±1% accuracy over the full −40°C to +85°C operating temperature range. This specification is guaranteed per the datasheet's Electrical Characteristics table for the E-grade (extended temperature) version, and applies when V− is used as the reference ground node-not GND.
Does the MAX974ESE+T include internal hysteresis?
No, the MAX974ESE+T does not include internal hysteresis. Unlike the MAX971/MAX982/MAX973 variants, it lacks a HYST pin and associated internal hysteresis circuitry. Hysteresis must be implemented externally using positive feedback from the open-drain output to the appropriate input, as shown in Figure 4 of the datasheet.
Can the MAX974ESE+T operate from a 3V single supply?
Yes, the MAX974ESE+T is fully specified for single-supply operation from 2.5V to 11V. At 3V, it delivers ≤8.0µA supply current (typical), maintains 1.182V ±1% reference accuracy, and supports input common-mode range from GND to 1.7V - making it ideal for 3V microcontroller-based battery monitors and portable sensors.
What is the purpose of the separate GND pin (Pin 14) on the MAX974ESE+T?
The separate GND pin (Pin 14) on the MAX974ESE+T provides an isolated ground connection exclusively for the output-stage N-channel MOSFETs. This allows the device to sink output current to GND while referencing inputs and the internal reference to V− - enabling true bipolar-to-single-ended level translation (e.g., ±5V input → 0–5V output) without external components.
How does the MAX974ESE+T differ from the MAX974CSE?
The MAX974ESE+T is the extended-temperature (−40°C to +85°C) version in narrow SO package, while MAX974CSE is the commercial-grade (0°C to +70°C) variant in the same package. Both share identical electrical specifications, pinout, and functionality-but only the MAX974ESE+T is qualified for industrial and automotive ambient environments requiring operation below 0°C or above 70°C.
MAX974ESE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- with Voltage Reference
- Number of Elements:
- 4
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 11V, ±1.25V ~ 5.5V
- :
- 10mV @ 5V
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 8.5µA
- Current - Quiescent (Max):
- 80dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 16-SOIC
MAX974ESE+T FAQ
1.How can I place an order for MAX974ESE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX974ESE+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 MAX974ESE+T reliable?
The price and inventory of MAX974ESE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX974ESE+T is usually 5 days.
3.What payment methods are accepted for MAX974ESE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX974ESE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX974ESE+T?
MAX974ESE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX974ESE+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 MAX974ESE+T?
For technical support, including MAX974ESE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX974ESE+T requirements.
6.How does Aetrix verify that MAX974ESE+T is sourced from the original manufacturer or authorized distributors?
All MAX974ESE+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 MAX974ESE+T meets industry standards.
7.What is the process for return or replacement of MAX974ESE+T?
All MAX974ESE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX974ESE+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 MAX974ESE+T part is unused and in its original packaging.
Return procedure for MAX974ESE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX974ESE+T 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.
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