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Analog Devices Inc./Maxim Integrated MAX983ESA-T
- Part No.:
- MAX983ESA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX983ESA-T.pdf
- Description:
- IC COMPARATOR 2 W/VOLT REF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,109
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Product details
Overview
The MAX983ESA-T from Maxim Integrated is a dual, ultra-low-power, open-drain comparator with internal 1.182V ±2% voltage reference and programmable hysteresis via HYST pin. It operates from single 2.5V–11V or dual ±1.25V–±5.5V supplies, features input common-mode range extending to V− and within 1.3V of V+, and draws ≤4µA supply current over temperature. It is used in battery-powered threshold detectors and window comparators requiring rail-to-rail input operation and level translation.
For engineers reviewing the MAX983ESA-T datasheet, MAX983ESA-T pinout, MAX983ESA-T application, or MAX983ESA-T equivalent, key selection criteria include its dual-comparator architecture with shared REF/HYST pins, 12µs propagation delay at 10mV overdrive, ±2% reference accuracy over −40°C to +85°C, and SO-8 package compatibility with legacy MAX97x/MAX98x designs.
Technical Context
The MAX983ESA-T integrates two independent comparators sharing a single internal 1.182V bandgap reference and a dedicated HYST pin for simultaneous hysteresis programming on both channels. Its open-drain outputs sink current to V− (not GND), enabling direct interface with negative supply rails and bipolar-to-single-ended conversion without level-shifting components.
Input stage design supports operation with inputs ranging from V− to (V+ − 1.3V), with guaranteed functionality down to 2.5V total supply. The HYST pin accepts voltages from (REF − 50mV) to REF, allowing precise hysteresis bands up to 100mV via external resistor dividers - a feature confirmed for MAX983 and not applicable to MAX972 or MAX974 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | Single 2.5V–11V or dual ±1.25V–±5.5V - enables use in 3V/5V systems and split-rail sensor interfaces. |
| Quiescent Supply Current | ≤4µA over −40°C to +85°C - ensures multi-year battery life in always-on monitoring circuits. |
| Reference Voltage Accuracy | 1.182V ±2% over −40°C to +85°C - sets absolute threshold precision for undervoltage/overvoltage detection. |
| Propagation Delay | 12µs at 10mV overdrive - defines minimum response time for fast transient detection in power-good circuits. |
| Input Common-Mode Range | V− to (V+ − 1.3V) - allows direct sensing of signals near ground or rail without external biasing. |
| Output Sink Capability | 1.8mA at VOUT = 0.4V (V+ = 5V) - supports standard pull-up resistors (e.g., 10kΩ to 5V) for logic-level interfacing. |
| Hysteresis Control | Programmable via HYST pin (REF − 50mV to REF) - eliminates need for external feedback networks in dual-threshold designs. |
Pinout & Package
MAX983ESA-T is supplied in an 8-pin SO (Small Outline) package with exposed pad (SOIC-N), pin-compatible with industry-standard .150" SOIC footprints. Pin functions are validated per Maxim's official pin configuration diagram for MAX983 (DIP/SO/µMAX variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUTA) | Comparator A open-drain output | Sinks current to V−; requires external pull-up for logic-high output state. |
| 2 (V−) | Negative supply / reference ground | Connect to system ground in single-supply mode; defines REF and input common-mode baseline. |
| 3 (INA+) | Noninverting input of Comparator A | Accepts signals from V− to (V+ − 1.3V); high-impedance (±0.01nA leakage) minimizes loading. |
| 4 (INB−) | Inverting input of Comparator B | Shared input node for dual-comparator window detection; matched offset improves threshold symmetry. |
| 5 (HYST) | Hysteresis control input | Accepts voltage between (REF − 50mV) and REF; sets identical hysteresis band on both comparators. |
| 6 (REF) | Internal 1.182V reference output | Referenced to V−, not GND; sources/sinks up to 25µA/15µA - no bypass capacitor required. |
| 7 (V+) | Positive supply | Supports up to 11V; powers internal reference and comparator core; determines output sink strength. |
| 8 (OUTB) | Comparator B open-drain output | Electrically isolated from OUTA; enables independent active-low outputs for window comparator logic. |
Key Features
| Feature | Design Value |
|---|---|
| Dual comparator with shared REF/HYST | Reduces component count in window detectors by eliminating duplicate reference ICs and separate hysteresis networks. |
| Open-drain outputs sinking to V− | Enables direct interface with negative supply domains and simplifies bipolar-to-unipolar signal conversion. |
| Programmable hysteresis via single HYST pin | Allows identical, precisely controlled hysteresis on both comparators using only two external resistors - no layout-sensitive feedback traces. |
| 1.182V ±2% internal reference | Provides stable, factory-trimmed threshold reference across −40°C to +85°C without external precision components. |
| Ultra-low 4µA supply current | Permits continuous operation in energy-constrained applications such as coin-cell-powered IoT sensors and backup monitors. |
Applications
| Power-Good Monitoring | Window Voltage Detection |
|---|---|
|
Use Scenario: Monitoring a 5V DC supply for undervoltage (4.5V) and overvoltage (5.5V) conditions in embedded controllers. IC Role / Device Role / Timing Role: Dual comparator configured as window detector, with INA+ and INB− tied to resistor-divided VIN, REF providing threshold reference, and HYST setting 10mV hysteresis per threshold. Use Value: Eliminates need for external op-amps or discrete references; single MAX983ESA-T replaces two comparators plus one voltage reference IC. |
Use Scenario: Detecting battery voltage drop below 3.6V while preventing false triggers during load transients. IC Role / Device Role / Timing Role: Comparator B compares battery voltage against REF-derived threshold; HYST pin adds 20mV hysteresis to suppress chatter during slow discharge. Use Value: Achieves reliable low-battery alert with <4µA quiescent current - extends shelf life of sealed battery packs by years. |
| Bipolar-to-Unipolar Level Translation | Low-Power Oscillator Enable |
|
Use Scenario: Converting ±5V analog sensor outputs to 0–5V logic-compatible signals in portable instrumentation. IC Role / Device Role / Timing Role: Comparator A compares inverted sensor signal against REF; open-drain OUTA pulled to 5V generates clean unipolar output. Use Value: Uses internal REF instead of external DAC or resistor network; V− pin connection enables direct handling of negative inputs without level shifters. |
Use Scenario: Enabling a crystal oscillator only when main supply exceeds 2.7V, reducing system standby power. IC Role / Device Role / Timing Role: Comparator A monitors V+ via resistive divider; OUTA drives enable pin of oscillator IC through 10kΩ pull-up. Use Value: Leverages 2.5V minimum operating voltage and rail-to-rail input to detect brown-out before microcontroller reset threshold is reached. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX982ESA-T | Identical pinout, same ±2% reference and HYST capability, but specified only for 0°C to +70°C commercial temp range. | Lacks extended −40°C to +85°C qualification; unsuitable for automotive or industrial outdoor deployments. | Select MAX982ESA-T only for cost-sensitive consumer-grade products operating within 0°C–70°C ambient. |
| TLV3702IDR | CMOS-input dual comparator with 1.8V–16V supply, 850nA IQ, no internal reference, no HYST pin - requires external reference and hysteresis circuitry. | Higher supply flexibility but increases BOM count and PCB area; lacks integrated hysteresis control. | Choose TLV3702IDR when ultra-low IQ (<1µA) is critical and external reference/hysteresis design resources are available. |
Compared with MAX982ESA-T, the MAX983ESA-T provides extended temperature support essential for industrial environments; compared with TLV3702IDR, it delivers integrated reference and hysteresis control - reducing design cycle time and validation effort for threshold-detection applications.
Availability
MAX983ESA-T is available at Aetrix Electronics and suitable for battery-powered systems, power-supply monitoring, window comparators, and level translators requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for MAX983ESA-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 and mixed-signal ICs for power, sensing, and interface applications.
The MAX98x series was designed specifically for ultra-low-power, precision threshold detection in space- and energy-constrained systems - emphasizing micropower operation, integrated references, and simplified hysteresis implementation.
FAQ
What is the maximum supply voltage for MAX983ESA-T?
The MAX983ESA-T supports a maximum total supply voltage of 11V - either as a single 2.5V–11V supply or dual ±1.25V–±5.5V rails. Exceeding 11V risks permanent damage, as specified in Absolute Maximum Ratings. At 11V, output sink capability remains functional, but supply current increases slightly versus 5V operation.
Does MAX983ESA-T require an external reference?
No, the MAX983ESA-T includes an internal 1.182V ±2% bandgap reference accessible at the REF pin. This reference is referenced to V−, not GND, and is fully characterized over −40°C to +85°C. External bypassing is not recommended - doing so may destabilize the reference output.
How is hysteresis implemented on MAX983ESA-T?
Hysteresis on the MAX983ESA-T is programmed 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 − 50mV) to REF. This method applies identical hysteresis to both comparators without external feedback loops.
What is the input common-mode voltage range of MAX983ESA-T?
The MAX983ESA-T input common-mode voltage range is specified from V− to (V+ − 1.3V). For example, with V+ = 5V and V− = 0V, inputs may swing from 0V to 3.7V. Inputs may tolerate brief excursions up to 300mV beyond these limits without damage, but guaranteed operation occurs only within the specified range.
Can MAX983ESA-T operate from a 3V single supply?
Yes, the MAX983ESA-T is fully specified for 3V single-supply operation (V+ = 3V, V− = 0V). At 3V, supply current remains ≤4µA, propagation delay increases to ~15µs (vs. 12µs at 5V), and output sink current decreases proportionally - all within datasheet limits. The internal reference remains stable and accurate at 3V.
MAX983ESA-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:
- Obsolete
- Type:
- with Voltage Reference
- Number of Elements:
- 2
- Output Type:
- -
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 11V, ±1.25V ~ 5.5V
- :
- 10mV @ 5V
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 6µA
- Current - Quiescent (Max):
- 80dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- 50mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
MAX983ESA-T FAQ
1.How can I place an order for MAX983ESA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX983ESA-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 MAX983ESA-T reliable?
The price and inventory of MAX983ESA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX983ESA-T is usually 5 days.
3.What payment methods are accepted for MAX983ESA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX983ESA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX983ESA-T?
MAX983ESA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX983ESA-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 MAX983ESA-T?
For technical support, including MAX983ESA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX983ESA-T requirements.
6.How does Aetrix verify that MAX983ESA-T is sourced from the original manufacturer or authorized distributors?
All MAX983ESA-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 MAX983ESA-T meets industry standards.
7.What is the process for return or replacement of MAX983ESA-T?
All MAX983ESA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX983ESA-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 MAX983ESA-T part is unused and in its original packaging.
Return procedure for MAX983ESA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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