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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:2,513
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Product details
Overview
The MAX974ESE-T from Maxim Integrated is a quad ultra-low-power open-drain comparator with integrated 1.182V ±1% bandgap reference, operating from single 2.5V–11V or dual ±1.25V–±5.5V supplies. It features 4µA max supply current over temperature, rail-to-rail input range (V− to V+ − 1.3V), and 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-channel open-drain architecture, ±1% reference accuracy, extended −40°C to +85°C temperature range, 16-pin narrow SO package, and compatibility with low-voltage (≥2.5V) single-supply operation.
Technical Context
The MAX974ESE-T integrates four independent comparators sharing one precision 1.182V ±1% internal reference referenced to V−, not GND. Its open-drain outputs sink current to GND (not V−), enabling wire-OR configurations and level-shifting across voltage domains up to 11V.
Unlike MAX971/MAX981 (single) or MAX972/MAX982 (dual), the MAX974ESE-T implements quad functionality in a 16-pin SO package with dedicated pins for all four inputs (INA±, INB±, INC±, IND±), four outputs (OUTA–OUTD), REF, HYST, V+, V−, and GND-supporting window detection, power-good monitoring, and multi-threshold battery management without external references.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | Single 2.5V–11V or dual ±1.25V–±5.5V - supports direct interface with Li-ion batteries and industrial rails. |
| Quiescent Current | ≤4µA at −40°C to +85°C - enables >1-year operation on coin-cell batteries in always-on sensing nodes. |
| Reference Accuracy | 1.182V ±1% (0°C to +70°C), ±2% (−40°C to +85°C) - ensures stable thresholds across automotive/industrial temperature ranges. |
| Input Common-Mode Range | V− to V+ − 1.3V - allows direct sensing of signals near supply rails, e.g., battery voltage monitoring down to 0V. |
| Propagation Delay | 12µs (10mV overdrive) - sufficient for slow-control applications like power sequencing and fault latching. |
| Output Sink Capability | 50mA per output (VOUT = 0.4V, V+ = 5V) - drives LEDs, MOSFET gates, or logic inputs without external buffers. |
| Reference Output Drive | Sinks 4µA / sources 6µA - adequate for biasing external hysteresis resistors or driving high-impedance ADC references. |
Pinout & Package
MAX974ESE-T is housed in a 16-pin narrow SOIC (SOICN) package with 0.150" body width and standard 0.050" pitch. Pin 1 is OUTA; pin 16 is V+. The package includes dedicated GND (pin 14), V+ (pin 3), V− (pin 9), REF (pin 8), and HYST (pin 5) terminals, plus four fully independent comparator channels.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Open-drain output of comparator A; sinks current to GND (pin 14), not V− - enables level translation between isolated domains. |
| 2 | OUTB | Open-drain output of comparator B; electrically isolated from OUTA - supports independent fault signaling or OR-ing. |
| 4 | INA− | Inverting input of comparator A; common-mode range extends to V− - accepts ground-referenced signals in single-supply systems. |
| 5 | HYST | Hysteresis control input; voltage range REF − 0.05V to REF - used with external resistors to set noise-immune switching thresholds. |
| 8 | REF | 1.182V reference output referenced to V−; ±1% accuracy - eliminates need for external voltage reference in cost-sensitive designs. |
| 9 | V− | Negative supply rail; connect to GND for single-supply operation - defines reference point for REF and input common-mode range. |
| 14 | GND | Dedicated output-stage ground; separate from V− - isolates output switching noise from analog reference and input circuitry. |
| 16 | V+ | Positive supply rail; total supply (V+ − V−) ≤ 11V - sets maximum output voltage swing and sink current capability. |
Key Features
| Feature | Design Value |
|---|---|
| Quad comparator + reference in one IC | Reduces BOM count and PCB area vs. discrete solutions; eliminates matching errors between channels. |
| Separate GND pin for output stage | Enables true bipolar-to-single-ended conversion: e.g., ±5V inputs → 3.3V logic outputs with no level-shifter IC. |
| 1.182V ±1% internal reference | Stable threshold generation without external components; ±2% over full −40°C to +85°C range ensures reliability in harsh environments. |
| Ultra-low 4µA supply current | Extends battery life in portable medical sensors, IoT endpoints, and remote monitors where duty cycling is impractical. |
| Open-drain outputs with 11V max voltage rating | Supports pull-up to higher voltages than V+ (e.g., 12V rail) - ideal for interfacing with legacy industrial logic or optocouplers. |
Applications
| Battery Switchover Monitoring | Power-Good Sequencing |
|---|---|
Use Scenario: Automatic transition from wall adapter to backup battery when main supply drops below 4V, with low-battery warning at 3.6V. IC Role / Device Role / Timing Role: MAX974ESE-T comparator A detects adapter failure; comparator B monitors battery voltage; outputs drive P-MOSFET gate and LED indicator. Use Value: Eliminates diode voltage drop and power loss; achieves <100ms switchover with no external reference or hysteresis components. | Use Scenario: Validating correct startup order of multiple DC rails (e.g., 5V, 3.3V, 1.8V) in FPGA or processor power systems. IC Role / Device Role / Timing Role: Each comparator channel monitors one rail against its 1.182V reference via resistor divider; wired-OR output asserts "power good" only when all rails are in spec. Use Value: Guarantees safe system boot by preventing clock or I/O activation until all supplies stabilize within tolerance. |
| Window Voltage Detection | Level Translation Interface |
Use Scenario: Detecting undervoltage (4.5V) and overvoltage (5.5V) conditions on a 5V microcontroller supply to trigger shutdown before damage occurs. IC Role / Device Role / Timing Role: Comparator A and B form a window detector using shared REF and HYST pins; outputs generate active-high "power OK" signal via wired-OR. Use Value: Provides ±5mV hysteresis at input without external op-amps or feedback networks - reduces component count by 40% vs. discrete design. | Use Scenario: Converting ±5V analog sensor outputs to 3.3V logic-compatible signals for MCU ADC input in mixed-signal test equipment. IC Role / Device Role / Timing Role: MAX974ESE-T comparator A compares differential sensor output to 0V; open-drain output pulled to 3.3V generates clean digital edge. Use Value: Leverages separate GND pin to isolate ±5V analog ground from digital 3.3V domain - prevents ground loop noise injection into sensitive measurements. |
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 comparator architecture but ±2% reference accuracy; higher 8µA max supply current. | Targeted at cost-sensitive industrial controls where ±2% threshold tolerance is acceptable. | Select MAX984ESE if reference accuracy >±1% is unnecessary and lower unit cost is prioritized over battery life. |
| TLV3404IPW | Quad comparator with rail-to-rail input, 850nA supply current, no internal reference; requires external 1.2V reference. | Used in ultra-low-power sensor nodes where <1µA sleep current is mandatory and external reference is already present. | Choose TLV3404IPW only when system-level power budget demands sub-µA quiescent current and external reference infrastructure exists. |
Compared with MAX984ESE, the MAX974ESE-T offers tighter reference accuracy and lower supply current for precision battery monitoring; compared with TLV3404IPW, it integrates the reference and simplifies layout but consumes more current - making it optimal for mid-power industrial and automotive subsystems requiring self-contained threshold detection.
Availability
MAX974ESE-T is available at Aetrix Electronics and suitable for battery-powered systems, power-good sequencers, window voltage detectors, and level-translating interfaces requiring stable component supply across extended temperature ranges.
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) designs precision analog and mixed-signal ICs for industrial, automotive, and communications applications.
The MAX97x/MAX98x comparator family was engineered for ultra-low-power threshold detection in space-constrained, battery-operated systems - emphasizing micropower operation, integrated references, and flexible supply configurations.
FAQ
What is the maximum supply voltage for the MAX974ESE-T?
The MAX974ESE-T supports a maximum total supply voltage of 11V - meaning V+ − V− ≤ 11V. It operates from single supplies of 2.5V–11V (with V− tied to GND) or dual supplies of ±1.25V–±5.5V. Exceeding 11V risks permanent damage, as specified in the Absolute Maximum Ratings table of the MAX974ESE-T datasheet.
Does the MAX974ESE-T require external hysteresis components?
The MAX974ESE-T does not include internal hysteresis, unlike the MAX971/MAX982/MAX973 variants. To implement hysteresis, external resistors must be connected between REF (pin 8), HYST (pin 5), and V− (pin 9). This configuration allows programmable hysteresis bands up to 100mV, as detailed in the MAX974ESE-T Applications Information section.
Can the MAX974ESE-T operate from a 1.8V supply?
No - the MAX974ESE-T has a guaranteed minimum operating voltage of 2.5V (single supply) or ±1.25V (dual supply). While the comparators may function down to ~1V under lab conditions, the internal 1.182V reference ceases regulation below ~2.2V, and performance (propagation delay, output drive) degrades significantly. For 1.8V systems, consider the MAX972 or other low-voltage optimized comparators.
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 return path for the open-drain output transistors - distinct from the analog V− supply rail (pin 9). This enables clean level shifting (e.g., ±5V inputs → 3.3V logic outputs) and prevents output switching noise from coupling into the reference or input circuitry, a critical advantage in mixed-signal applications.
How does the MAX974ESE-T's reference voltage relate to its supply rails?
The MAX974ESE-T's 1.182V reference (pin 8) is referenced to V− (pin 9), not GND (pin 14) or V+. Therefore, if V− = −5V, the reference output is −3.818V relative to GND. This architecture allows the reference to remain stable across dual-supply configurations and simplifies resistor-divider design for threshold setting - but requires careful grounding when interfacing with single-supply logic.
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:
- Obsolete
- 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.
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