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Analog Devices Inc./Maxim Integrated MAX974ESE+
- Part No.:
- MAX974ESE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX974ESE+.pdf
- Description:
- IC COMPARATR 4 W/VOLT REF 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:106
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Product details
Overview
MAX974ESE+ from Maxim Integrated is a quad ultra-low-power open-drain comparator with integrated 1.182V ±1% bandgap reference, 4µA max supply current at +25°C, single 2.5V–11V or dual ±1.25V–±5.5V operation, and separate GND pin for output stage - designed for level translation and bipolar-to-single-ended conversion in battery-powered systems.
For engineers reviewing the MAX974ESE+ datasheet, MAX974ESE+ pinout, MAX974ESE+ application, or MAX974ESE+ equivalent, key selection criteria include guaranteed input common-mode range to V+ − 1.3V, 12µs propagation delay (10mV overdrive), open-drain output voltage swing up to 11V above V−, and E-temp (−40°C to +85°C) qualification for industrial embedded use.
Technical Context
The MAX974ESE+ integrates four independent comparators sharing a precision internal reference and operates with true rail-to-rail input capability down to the negative supply rail. Its output stage uses an N-channel MOSFET sinking to GND (not V−), enabling robust level-shifting between disparate voltage domains.
Unlike MAX972/MAX982 variants, the MAX974ESE+ lacks programmable hysteresis via HYST pin but supports external hysteresis using positive feedback. It features no internal hysteresis and requires external components for noise-immune thresholding - confirmed by ordering table and functional diagrams.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | Single 2.5V to 11V or dual ±1.25V to ±5.5V - supports wide-input industrial and battery systems without external regulators. |
| Quiescent Supply Current | ≤8.5µA at +25°C (5V supply), ≤10µA over −40°C to +85°C - enables multi-year operation on coin-cell batteries. |
| Reference Voltage Accuracy | 1.182V ±1% over −40°C to +85°C - provides stable threshold generation without external precision references. |
| Input Common-Mode Range | V− to (V+ − 1.3V) - allows direct sensing of signals near supply rails, critical for undervoltage/overvoltage detection. |
| Propagation Delay | 12µs typical (10mV overdrive, 100pF load, 1MΩ pullup) - balances speed and ultra-low power for wake-up and monitoring circuits. |
| Output Sink Capability | 50mA max, VOL = GND + 0.4V @ 1.8mA - drives LEDs, logic inputs, or MOSFET gates directly without buffer stages. |
| Reference Output Drive | Sinks 4µA / sources 6µA - sufficient to bias external resistor dividers for multiple comparator thresholds. |
Pinout & Package
MAX974ESE+ is housed in a 16-pin narrow SO (SOIC-N) package with 0.150" body width and standard 1.27mm pitch. Pin 1 is OUTA; pin 16 is V+. The package is RoHS-compliant and rated for −40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A open-drain output sinking to GND - used for active-low event signaling or wired-OR logic. |
| 2 | OUTB | Comparator B open-drain output sinking to GND - enables independent control of two system functions. |
| 3 | OUTC | Comparator C open-drain output sinking to GND - supports three-state or multi-threshold monitoring schemes. |
| 4 | OUTD | Comparator D open-drain output sinking to GND - allows full quad-level decision logic in one IC. |
| 5 | INA+ | Noninverting input of Comparator A - connects to reference or sensor signal for high-side threshold detection. |
| 6 | INA− | Inverting input of Comparator A - ties to feedback or divider network for hysteresis or window detection. |
| 7 | INB+ | Noninverting input of Comparator B - supports dual-threshold configurations like power-good monitoring. |
| 8 | INB− | Inverting input of Comparator B - used with resistive dividers to set precise trip points. |
| 9 | V− | Negative supply terminal - tied to GND in single-supply mode; enables true dual-supply operation when biased negatively. |
| 10 | REF | 1.182V reference output referenced to V− - supplies stable bias for all four comparators' threshold networks. |
| 11 | INC+ | Noninverting input of Comparator C - expands window or sequencing logic beyond dual-comparator limits. |
| 12 | INC− | Inverting input of Comparator C - supports cascaded or differential sensing topologies. |
| 13 | IND+ | Noninverting input of Comparator D - enables fourth independent decision channel (e.g., backup battery monitor). |
| 14 | IND− | Inverting input of Comparator D - completes full quad-comparator flexibility for complex state machines. |
| 15 | GND | Output-stage ground - separate from V−, allowing output to sink below V− and enabling bipolar-to-unipolar level shift. |
| 16 | V+ | Positive supply input - accepts up to 11V, supporting wide-input industrial sensors and legacy analog subsystems. |
Key Features
| Feature | Design Value |
|---|---|
| Quad open-drain comparators with shared reference | Reduces BOM count and PCB area vs. discrete solutions; eliminates mismatch between reference and comparator thresholds. |
| Separate GND pin for output stage | Enables output voltage swing from GND to 11V regardless of V−, making it ideal for translating ±5V signals to 3.3V/5V logic domains. |
| Ultra-low 8.5µA supply current (typ) | Extends battery life in portable medical devices and IoT edge nodes where sleep-mode current dominates lifetime energy budget. |
| Input range from V− to V+ − 1.3V | Permits direct connection to battery terminals or unregulated supplies without level-shifting resistors or clamps. |
| 1.182V ±1% internal reference (E-temp) | Eliminates need for external voltage reference ICs in cost-sensitive applications like smart meters and industrial controllers. |
Applications
| Battery-Powered Systems | Level Translators |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during charge/discharge cycles in handheld instruments. IC Role / Device Role / Timing Role: Quad comparator detects under-voltage (cell < 3.0V), over-voltage (cell > 4.25V), pre-charge enable (< 2.8V), and thermal fault (via NTC divider). Use Value: Single MAX974ESE+ replaces four discrete comparators and one reference, reducing footprint by >65% and eliminating inter-device reference drift. |
Use Scenario: Converting RS-232 (±12V) or industrial ±10V analog signals to 3.3V microcontroller GPIO inputs. IC Role / Device Role / Timing Role: Acts as rail-to-rail input translator with output referenced to MCU's 3.3V domain via GND pin, not V−. Use Value: Eliminates optocouplers or dedicated level-shifters; supports bidirectional signal conditioning with <12µs latency and no external power on the low-voltage side. |
| Window Comparators | Oscillator Circuits |
Use Scenario: Power-supply monitoring in PLC I/O modules requiring "power-good" assertion only when 24V rail stays within 22.5V–25.5V. IC Role / Device Role / Timing Role: Two comparators form upper/lower thresholds; third implements hysteresis; fourth provides fail-safe latch or alarm. Use Value: Achieves <±0.5% window accuracy using internal REF and resistor dividers - no trimming required across temperature. |
Use Scenario: Building low-power relaxation oscillators in sensor node wake-up timers with variable frequency. IC Role / Device Role / Timing Role: One comparator charges capacitor via current source; second comparator discharges it - frequency set by RC time constant and REF voltage. Use Value: Draws <10µA total supply current while generating stable 1Hz–10kHz clocks - 10× lower than CMOS oscillator ICs at same frequency. |
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 pinout and package, but ±2% reference accuracy and no internal reference trimming - higher initial threshold error. | Acceptable where cost sensitivity outweighs precision; unsuitable for <1% window detection. | Select MAX984ESE+ only if reference tolerance >±2% is acceptable and BOM cost reduction is primary goal. |
| TLV3704IPW | Lower supply current (1.6µA), rail-to-rail I/O, but no internal reference and V+ max = 16V - requires external reference for threshold stability. | Preferred for ultra-low-power designs where external reference already exists; not drop-in for REF-dependent circuits. | Choose TLV3704IPW when minimizing quiescent current is critical and reference circuitry is shared across multiple ICs. |
Compared with MAX974ESE+, MAX984ESE+ trades reference accuracy for lower unit cost, while TLV3704IPW reduces supply current significantly but adds design complexity with external reference dependency - making MAX974ESE+ optimal for self-contained, precision quad-threshold systems.
Availability
MAX974ESE+ is available at Aetrix Electronics and suitable for battery-powered systems, level translators, and window comparators requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX974ESE+ 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 and mixed-signal ICs for industrial, automotive, and communications markets.
The MAX97x/MAX98x comparator family was designed for ultra-low-power sensing and threshold detection in space-constrained, battery-operated equipment - emphasizing micropower operation, integrated references, and flexible supply architectures.
FAQ
What is the maximum supply voltage for MAX974ESE+ in single-supply operation?
The MAX974ESE+ supports a single-supply voltage range of 2.5V to 11V. At 11V, the device maintains full functionality including reference regulation and comparator response. Absolute maximum rating is 12V, but operation above 11V risks parametric degradation. For reliable long-term use, keep V+ ≤11V with V− tied to GND.
Does MAX974ESE+ include internal hysteresis?
No, MAX974ESE+ does not include internal hysteresis. Unlike MAX971/MAX973/MAX981–MAX983, the MAX974ESE+ has no HYST pin and no factory-trimmed hysteresis circuitry. Hysteresis must be implemented externally using positive feedback, as shown in Figure 4 of the datasheet.
Can MAX974ESE+ operate from a 3.3V supply?
Yes, MAX974ESE+ operates fully specified from 3.3V single supply (V+ = 3.3V, V− = GND). At 3.3V, supply current is ≤8.0µA (typ), input common-mode range extends to 2.0V, and propagation delay increases to ~15µs - all within datasheet limits for −40°C to +85°C operation.
What is the purpose of the separate GND pin on MAX974ESE+?
The separate GND pin (Pin 15) provides a dedicated return path for the open-drain output transistors, decoupling output sink behavior from the V− supply rail. This allows outputs to swing down to true GND even when V− is negative (e.g., in ±5V dual-supply mode), enabling bipolar-to-single-ended level translation without external components.
Is the internal reference of MAX974ESE+ buffered?
No, the internal 1.182V reference (Pin 10) is unbuffered. It is rated for ±6µA source / ±4µA sink capability. Loading beyond this causes reference voltage droop - for example, a 100kΩ divider draws 11.8µA and will reduce REF by >1%. Use high-impedance dividers or external op-amp buffering for multi-comparator threshold networks.
MAX974ESE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- 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+ FAQ
1.How can I place an order for MAX974ESE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX974ESE+ 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+ reliable?
The price and inventory of MAX974ESE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX974ESE+ is usually 5 days.
3.What payment methods are accepted for MAX974ESE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX974ESE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX974ESE+?
MAX974ESE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX974ESE+ 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+?
For technical support, including MAX974ESE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX974ESE+ requirements.
6.How does Aetrix verify that MAX974ESE+ is sourced from the original manufacturer or authorized distributors?
All MAX974ESE+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX974ESE+?
All MAX974ESE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX974ESE+, 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+ part is unused and in its original packaging.
Return procedure for MAX974ESE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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