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Analog Devices Inc./Maxim Integrated MAX983CSA-T
- Part No.:
- MAX983CSA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX983CSA-T.pdf
- Description:
- IC COMPARATOR 2 W/VOLT REF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,010
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Product details
Overview
The MAX983CSA-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, draws ≤4µA supply current over temperature, and supports rail-to-rail input common-mode range (V− to V+ −1.3V). It is used in battery-powered threshold detectors and window comparators.
For engineers reviewing the MAX983CSA-T datasheet, MAX983CSA-T pinout, MAX983CSA-T application, or MAX983CSA-T equivalent, this page delivers verified specifications, validated pin functions, confirmed dual-comparator architecture with shared reference, and real-world design context for low-voltage, low-power sensing circuits.
Technical Context
The MAX983CSA-T integrates two independent micropower comparators and a precision bandgap reference referenced to V−. Its HYST pin enables simple, resistor-programmable hysteresis without external feedback - a feature confirmed for both comparators simultaneously. Input stage supports operation down to V− and up to V+ −1.3V, enabling robust sensing across wide supply ranges.
Output stages are open-drain N-channel MOSFETs sinking to V− (not GND), consistent with MAX982/MAX983 family architecture. The device lacks a dedicated GND pin; V− serves as the output return path. Reference accuracy is ±2% over 0°C to +70°C, and propagation delay is 12µs (10mV overdrive, 100pF load, 1MΩ pullup).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | Single: 2.5V–11V; Dual: ±1.25V–±5.5V - supports direct interfacing with Li-ion, 3.3V, and 5V systems without level shifters. |
| Quiescent Supply Current | ≤4µA max over temperature - enables multi-year operation on coin-cell batteries in always-on monitoring. |
| Reference Voltage | 1.182V ±2% (0°C to +70°C) - stable, factory-trimmed bandgap reference referenced to V−, not GND. |
| Input Common-Mode Range | V− to V+ −1.3V - allows inputs to swing to negative rail and within 1.3V of positive rail, critical for ground-referenced sensors. |
| Propagation Delay | 12µs (10mV overdrive, 100pF load, 1MΩ pullup) - defines minimum response time for fast threshold crossing detection. |
| Output Type | Open-drain, sinks to V− - enables wire-ORing, level translation, and compatibility with mixed-voltage logic families. |
| Hysteresis Control | HYST pin accepts REF − 0.05V to REF - permits precise, resistor-programmed hysteresis band up to 100mV without external op-amps or feedback networks. |
Pinout & Package
MAX983CSA-T is housed in an 8-pin SO (Small Outline) package with gull-wing leads, JEDEC MS-012AC compliant, body size 4.9mm × 3.9mm × 1.75mm.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A open-drain output; sinks current to V−; requires external pullup for logic-high assertion. |
| 2 | V− | Negative supply rail and output return path; connect to GND for single-supply operation. |
| 3 | INA+ | Noninverting input of Comparator A; supports common-mode range from V− to V+ −1.3V. |
| 4 | INB− | Inverting input of Comparator B; electrically identical to INA− in functional behavior and specs. |
| 5 | HYST | Hysteresis control input; voltage between REF −50mV and REF sets hysteresis band width. |
| 6 | REF | 1.182V ±2% reference output referenced to V−; capable of sourcing 25µA and sinking 15µA. |
| 7 | V+ | Positive supply rail; total supply (V+ − V−) must stay within 2.5V–11V absolute limit. |
| 8 | OUTB | Comparator B open-drain output; sinks current to V−; functionally identical to OUTA. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | ≤4µA max over full temperature range - extends battery life in portable medical and IoT endpoint devices. |
| Dual comparator + reference integration | Single 8-pin SO package contains two matched comparators and a stable 1.182V reference - reduces BOM count and PCB area vs discrete solutions. |
| Programmable hysteresis via HYST pin | Eliminates need for external resistive feedback networks; enables precise, low-current hysteresis tuning using only two external resistors. |
| Wide supply and input voltage range | Operates from 2.5V–11V single supply or ±1.25V–±5.5V dual supply; inputs tolerate V− to V+ −1.3V - simplifies design across multiple power domains. |
| Open-drain outputs sinking to V− | Enables bipolar-to-single-ended conversion and level-shifting without additional transistors or level translators. |
Applications
| Battery Voltage Monitor | Window Detector (UV/OV) |
|---|---|
Use Scenario: Monitoring lithium-polymer cell voltage during charge/discharge cycles in wearables or remote sensors. IC Role / Device Role / Timing Role: Dual comparator compares battery voltage against upper (OV) and lower (UV) thresholds derived from REF and resistor dividers. Use Value: Enables precise, low-power "power-good" signaling with hysteresis to prevent chatter near trip points - critical for system reset and sleep/wake control. | Use Scenario: Detecting valid supply voltage range (e.g., 4.5V–5.5V) in industrial controllers powered by unregulated DC adapters. IC Role / Device Role / Timing Role: MAX983CSA-T implements a window comparator where OUTA and OUTB drive a wired-OR output indicating in-range condition. Use Value: Single IC replaces two comparators + reference + hysteresis circuitry, reducing component count and layout complexity while maintaining <12µs response. |
| Low-Power Threshold Detector | Level Translator (±5V → 3.3V) |
Use Scenario: Triggering wake-up events when ambient light or temperature crosses preset thresholds in energy-harvesting sensor nodes. IC Role / Device Role / Timing Role: One comparator channel compares sensor signal (e.g., amplified photodiode output) against REF-derived threshold. Use Value: Sub-4µA supply current ensures minimal impact on harvester energy budget; HYST pin enables noise-immune triggering without extra components. | Use Scenario: Converting legacy ±5V analog signals (e.g., from test equipment) into 3.3V logic-compatible levels for modern microcontrollers. IC Role / Device Role / Timing Role: Comparator A compares ±5V input against REF-based threshold; open-drain output pulled to 3.3V provides clean level-shifted logic signal. Use Value: Eliminates need for dedicated level-shifter ICs; V−-referenced outputs and rail-to-rail inputs simplify interface design and improve noise immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator with reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX982CSA-T | Identical pinout, package, and electrical specs; differs only in internal reference tolerance (also ±2%) and ordering suffix - functionally interchangeable. | No functional difference; same use cases including battery monitors and window detectors. | Select MAX982CSA-T if preferred for inventory alignment or if specific qualification history is required. |
| TLV3702IDR | Lower supply current (1.6µA), no integrated reference, rail-to-rail I/O, but requires external reference and hysteresis network. | Suitable for ultra-low-power designs where reference flexibility is needed, but increases BOM and layout complexity. | Choose TLV3702IDR only when reference voltage must be user-selectable or when <2µA supply current is mandatory and external components are acceptable. |
Compared with MAX982CSA-T (pin-identical, same spec), MAX983CSA-T offers no differentiation in performance or footprint; versus TLV3702IDR, MAX983CSA-T trades higher quiescent current for integrated reference and simplified hysteresis - reducing design effort and component count at modest power cost.
Availability
MAX983CSA-T is available at Aetrix Electronics and suitable for battery-powered systems, threshold detectors, window comparators, and level translators requiring stable component supply and long-term manufacturability.
Supply support for MAX983CSA-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 power, sensing, and interface applications in industrial, medical, and communications markets.
The MAX98x series targets ultra-low-power sensing and monitoring systems, delivering integrated comparators with reference and hysteresis in minimal footprints for space- and energy-constrained designs.
FAQ
What is the reference voltage accuracy of the MAX983CSA-T over temperature?
The MAX983CSA-T features a 1.182V internal bandgap reference with ±2% accuracy over the commercial temperature range (0°C to +70°C). This tolerance is specified and tested per the MAX981–MAX984 family data sheet, and applies to all variants including MAX983CSA-T. The reference is referenced to V−, not GND, and its output remains stable under load currents up to 25µA source or 15µA sink.
Can the MAX983CSA-T operate from a single 3.3V supply?
Yes, the MAX983CSA-T operates from a single 3.3V supply (V+ = 3.3V, V− = GND). Its guaranteed supply range is 2.5V to 11V, and electrical characteristics - including 4µA max supply current, 12µs propagation delay, and 1.182V ±2% reference - are fully specified at 3V and 5V operation per the datasheet's ELECTRICAL CHARACTERISTICS tables. Input common-mode range extends from GND to 2.0V (V+ −1.3V).
How is hysteresis implemented on the MAX983CSA-T?
Hysteresis on the MAX983CSA-T is implemented via the HYST pin: connect R1 between REF and HYST, and R2 between HYST and V−. The hysteresis band (VHB) ≈ 2 × (VREF − VHYST), adjustable from 0mV to 100mV. This method applies identical hysteresis to both comparators and requires no external op-amps or feedback paths - a key differentiator confirmed for MAX982/MAX983 in the datasheet's Applications Information section.
What is the output configuration of the MAX983CSA-T?
The MAX983CSA-T has two open-drain N-channel MOSFET outputs (OUTA and OUTB) that sink current to V−, not GND. There is no dedicated GND pin. When used in single-supply mode, V− is connected to system GND, making outputs sink to GND. In dual-supply mode, outputs sink to the negative rail - enabling true bipolar-to-single-ended conversion and level-shifting without additional components.
Is the MAX983CSA-T pin-compatible with other devices in the MAX98x family?
Yes, the MAX983CSA-T shares identical 8-pin SO pinout and function mapping with MAX981CSA-T, MAX982CSA-T, and MAX973CSA-T. All feature OUTA, V−, INA+, INB−, HYST, REF, V+, and OUTB on pins 1–8 respectively. Differences lie only in reference tolerance (±2% for MAX98x, ±1% for MAX97x) and internal hysteresis enablement - not pin assignment or package.
MAX983CSA-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:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
MAX983CSA-T FAQ
1.How can I place an order for MAX983CSA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX983CSA-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 MAX983CSA-T reliable?
The price and inventory of MAX983CSA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX983CSA-T is usually 5 days.
3.What payment methods are accepted for MAX983CSA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX983CSA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX983CSA-T?
MAX983CSA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX983CSA-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 MAX983CSA-T?
For technical support, including MAX983CSA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX983CSA-T requirements.
6.How does Aetrix verify that MAX983CSA-T is sourced from the original manufacturer or authorized distributors?
All MAX983CSA-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 MAX983CSA-T meets industry standards.
7.What is the process for return or replacement of MAX983CSA-T?
All MAX983CSA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX983CSA-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 MAX983CSA-T part is unused and in its original packaging.
Return procedure for MAX983CSA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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