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Analog Devices Inc./Maxim Integrated MAX976EUA+T
- Part No.:
- MAX976EUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX976EUA+T.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,490
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Product details
Overview
MAX976EUA+T from Maxim Integrated is a dual, high-speed, low-power comparator in an 8-pin µMAX® package, optimized for +3V/+5V single-supply operation. It delivers 20ns propagation delay, 225µA supply current per comparator, and rail-to-rail output capability-enabling direct interface with CMOS/TTL logic in battery-powered threshold detection systems.
For engineers reviewing the MAX976EUA+T datasheet, MAX976EUA+T pinout, MAX976EUA+T application, or MAX976EUA+T equivalent, key selection criteria include shutdown compatibility (not supported), ground-sensing input range (–0.2V to VCC–1.2V), input offset voltage (±2mV typ), and common-mode rejection ratio (95dB typ) under real-world 3V/5V system constraints.
Technical Context
The MAX976EUA+T implements a CMOS-input, push-pull output architecture with internal hysteresis (1.5mV typ input-referred) to suppress noise-induced oscillation during slow input transitions. Its input stage supports common-mode voltages extending 200mV below ground while maintaining valid logic states as long as at least one input remains within –0.2V to (VCC – 1.2V).
Propagation delay matching between channels is tightly controlled at ΔtPD = 1ns (typ), and skew between rising/falling edges is tSKEW = 2ns (typ). The device operates across –40°C to +85°C without external pull-ups, leveraging rail-to-rail sourcing/sinking (VOH = VCC – 0.1V, VOL = 0.1V at 2mA) for robust digital interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 20ns typical - enables timing-critical edge detection in IR receivers and line receivers up to ~25MHz effective bandwidth. |
| Supply Current | 225µA per comparator - supports multi-comparator designs in space-constrained, battery-operated systems with <1mW total dissipation at 3V. |
| Input Offset Voltage | ±2mV typical - ensures accurate threshold discrimination in 3V systems where 1% of VCC equals 30mV. |
| Common-Mode Range | –0.2V to (VCC – 1.2V) - allows direct sensing of signals referenced below ground (e.g., current-sense shunts, sensor outputs). |
| Rail-to-Rail Output | VOL = 0.1V / VOH = VCC – 0.1V at 2mA - eliminates need for external pull-up resistors when driving standard CMOS/TTL inputs. |
| CMRR | 95dB typical - maintains stable trip points despite supply ripple in noisy industrial or automotive power domains. |
| PSRR | 100dB typical - rejects supply noise without requiring ultra-low-ESR decoupling beyond standard 0.1µF ceramic. |
Pinout & Package
MAX976EUA+T is housed in an 8-pin µMAX® package (3mm × 3mm, 0.5mm pitch), thermally enhanced for surface-mount assembly in high-density PCB layouts.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INB– | Inverting input for comparator B - accepts signals down to –0.2V; must remain within common-mode range for valid output. |
| 2 | INB+ | Noninverting input for comparator B - used with INB– to define threshold crossing point for channel B. |
| 3 | GND | Analog ground reference - requires low-inductance connection to PCB ground plane to minimize switching noise coupling. |
| 4 | OUTB | Push-pull output for comparator B - drives high/low actively; no external pull-up needed for TTL/CMOS loads. |
| 5 | OUTA | Push-pull output for comparator A - electrically isolated from OUTB; supports independent logic-level signaling. |
| 6 | VCC | Positive supply input - operates from 2.7V to 5.5V; requires local 0.1µF ceramic decoupling placed ≤2mm from pin. |
| 7 | INA+ | Noninverting input for comparator A - configured with INA– (pin 8) to implement window, zero-crossing, or level-detection functions. |
| 8 | INA– | Inverting input for comparator A - paired with INA+ to form first comparator stage; shares same input specifications as pins 1–2. |
Key Features
| Feature | Design Value |
|---|---|
| Single-Supply Operation | 2.7V to 5.5V - eliminates need for split supplies in portable instrumentation and sensor front-ends. |
| Ground-Sensing Inputs | –0.2V common-mode lower limit - enables direct interface with current-sense amplifiers and shunt-based monitoring circuits. |
| Internal Hysteresis | 1.5mV typical input-referred - prevents chatter on slow-moving or noisy inputs without external feedback components. |
| Rail-to-Rail Outputs | No external pull-up required - reduces BOM count and board area in multi-channel comparator applications like window detectors. |
| Short-Circuit Tolerance | Continuous fault withstand on all I/O pins - improves system reliability in industrial environments with transient overvoltage exposure. |
Applications
| Battery-Powered Threshold Detection | IR Receiver Front-End |
|---|---|
|
Use Scenario: Monitoring battery voltage against undervoltage lockout (UVLO) and overvoltage protection (OVP) thresholds in handheld medical devices. IC Role / Device Role / Timing Role: Dual comparator implementing independent high/low trip points using resistor-divider feedback - one channel for UVLO, one for OVP. Use Value: 20ns response time ensures rapid shutdown before Li-ion cell damage occurs; 225µA quiescent current extends runtime between charges. |
Use Scenario: Converting modulated infrared photodiode current into clean digital pulses for remote control signal decoding. IC Role / Device Role / Timing Role: High-speed comparator comparing photodiode voltage (via load resistor RD) against reference voltage to regenerate NRZ data stream. Use Value: Rail-to-rail output directly drives microcontroller GPIO; 20ns delay preserves pulse fidelity up to 25MHz carrier harmonics. |
| Digital Line Receiver | 3V Industrial Sensor Interface |
|
Use Scenario: Receiving RS-232 or proprietary differential bus signals in legacy industrial equipment upgraded to 3V logic. IC Role / Device Role / Timing Role: Single comparator acting as level translator and noise filter - converting attenuated or distorted line signals into clean CMOS-compatible logic levels. Use Value: Ground-sensing inputs accept negative-going signal swings; internal hysteresis rejects EMI-induced glitches on long cable runs. |
Use Scenario: Interfacing analog-output pressure or temperature sensors to 3V microcontrollers in factory automation nodes. IC Role / Device Role / Timing Role: Comparator detecting when sensor output crosses programmable alarm thresholds (e.g., overpressure, overtemperature). Use Value: Input offset voltage ≤±2mV ensures <0.1% error at 2V full-scale; –0.2V to 3.8V common-mode range accommodates sensor biasing schemes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Slower (1.3µs propagation delay), higher supply current (500µA), open-collector output requiring pull-up. | Lacks rail-to-rail output and ground-sensing capability; unsuitable for low-voltage or fast-response applications. | Select only if cost sensitivity outweighs speed, power, and interface simplicity requirements. |
| TLV3501CDR | Faster (4.5ns), higher supply current (5.3mA), no internal hysteresis, requires external hysteresis network. | Better suited for ultra-high-speed sampling but increases design complexity and component count. | Choose when >100MHz edge rates demand sub-5ns response and layout permits careful hysteresis tuning. |
Compared with LM393DR and TLV3501CDR, the MAX976EUA+T uniquely balances 20ns speed, 225µA efficiency, rail-to-rail drive, and built-in hysteresis - making it optimal for compact, battery-aware 3V/5V systems where integration and reliability are prioritized over extreme speed or lowest cost.
Availability
MAX976EUA+T is available at Aetrix Electronics and suitable for battery-powered systems, IR receivers, digital line receivers, and 3V industrial sensor interfaces requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for MAX976EUA+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 demanding industrial, medical, and communications applications.
The MAX976EUA+T belongs to Maxim's high-speed comparator family engineered for single-supply, low-power, ground-sensing operation in portable and space-constrained systems - emphasizing speed/power trade-off optimization without sacrificing interface flexibility.
FAQ
What is the operating supply voltage range for the MAX976EUA+T?
The MAX976EUA+T operates from a single supply of +2.7V to +5.5V. This range supports both 3V and 5V system designs without level-shifting circuitry. At 2.7V, it maintains full functionality including 20ns propagation delay and rail-to-rail output swing, enabling direct use in modern low-voltage battery-powered applications where the MAX976EUA+T serves as a timing-critical decision element.
Does the MAX976EUA+T support shutdown mode?
No, the MAX976EUA+T does not include a shutdown feature. Shutdown capability is exclusive to the MAX998 (single) variant via its SHDN pin. The MAX976EUA+T is a dual comparator without enable/disable control; its supply current remains fixed at 225µA per comparator across the full operating temperature range. For power-gated applications, external supply switching must be implemented when using the MAX976EUA+T.
Can the MAX976EUA+T inputs safely operate below ground?
Yes, the MAX976EUA+T inputs tolerate common-mode voltages down to –0.2V relative to GND, enabling direct interface with signals referenced below ground - such as current-sense amplifier outputs or sensor bridges. This ground-sensing capability is confirmed in the Electrical Characteristics table (VCMR = –0.2V to VCC – 1.2V) and applies across the full –40°C to +85°C temperature range for the MAX976EUA+T.
What is the typical input offset voltage of the MAX976EUA+T?
The typical input offset voltage of the MAX976EUA+T is ±2mV at +25°C, with a maximum of ±3mV over the full –40°C to +85°C temperature range. This specification ensures accurate threshold detection in 3V systems where 2mV represents just 0.07% of full scale - critical for precision applications like battery voltage monitoring or sensor alarm triggering where the MAX976EUA+T performs the core comparison function.
Is the MAX976EUA+T pin-compatible with other packages in the MAX976 family?
No, the MAX976EUA+T uses the 8-pin µMAX® package (U8+1), which is physically and electrically distinct from the 8-pin SO package (MAX976ESA+) and incompatible with the 16-pin QSOP used for the quad MAX978. Pin assignments differ between µMAX and SO variants - for example, GND is on pin 3 in the µMAX but pin 1 in the SO version. Migration requires PCB layout revision; the MAX976EUA+T is not a drop-in replacement for other MAX976 package variants.
MAX976EUA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 5.5V
- :
- 2mV @ 5V
- Voltage - Input Offset (Max):
- 0.075µA @ 5.5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 650µA
- Current - Quiescent (Max):
- 95dB CMRR, 100dB PSRR
- CMRR, PSRR (Typ):
- 28ns
- Propagation Delay (Max):
- 5mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-uMAX/uSOP
MAX976EUA+T FAQ
1.How can I place an order for MAX976EUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX976EUA+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 MAX976EUA+T reliable?
The price and inventory of MAX976EUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX976EUA+T is usually 5 days.
3.What payment methods are accepted for MAX976EUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX976EUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX976EUA+T?
MAX976EUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX976EUA+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 MAX976EUA+T?
For technical support, including MAX976EUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX976EUA+T requirements.
6.How does Aetrix verify that MAX976EUA+T is sourced from the original manufacturer or authorized distributors?
All MAX976EUA+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 MAX976EUA+T meets industry standards.
7.What is the process for return or replacement of MAX976EUA+T?
All MAX976EUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX976EUA+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 MAX976EUA+T part is unused and in its original packaging.
Return procedure for MAX976EUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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