My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX975EUA+
- Part No.:
- MAX975EUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX975EUA+.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,564
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX975EUA+ from Maxim Integrated is a single high-speed comparator with auto-standby and low-power operating modes, designed for +2.7V to +5.25V single-supply systems. It delivers 28ns propagation delay in high-speed mode, consumes only 250µA supply current in that mode and drops to 3µA in low-power mode, and features rail-to-rail outputs compatible with CMOS/TTL logic-making it ideal for battery-powered IR receivers and threshold detection in 3V embedded sensor interfaces.
For engineers reviewing the MAX975EUA+ datasheet, MAX975EUA+ pinout, MAX975EUA+ application, or MAX975EUA+ equivalent, key selection considerations include its adjustable auto-standby timeout (set by external capacitor), ground-sensing input capability (–0.2V to VCC–1.2V common-mode range), internal hysteresis in high-speed mode, and dual-speed operation without external pull-ups.
Technical Context
The MAX975EUA+ implements a dual-comparator architecture: one optimized for high-speed operation (28ns tPD) and another for low-power continuous monitoring (480ns tPD, 3µA ICC). Its auto-standby logic monitors output stability via the STO pin and transitions between modes based on an externally programmable timeout (tASB = 10 × CSTO µs, C in pF).
Input stage supports rail-to-rail differential voltage swing and –0.2V to (VCC – 1.2V) common-mode range, enabling ground-referenced sensing. Output drivers are push-pull with rail-to-rail swing and tolerate continuous short-circuit faults to either rail; STAT pin provides mode status and can source up to 3mA for auxiliary circuitry power control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay (high-speed) | 28ns typical - enables reliable sampling of >10MHz signals in timing-critical detection paths. |
| Supply Current (high-speed) | 250µA typical - supports always-on wake-up circuits in ultra-low-quiescent IoT nodes. |
| Supply Current (low-power) | 3µA max - extends battery life in multi-year sensor deployments with infrequent events. |
| Common-Mode Input Range | –0.2V to (VCC – 1.2V) - allows direct interfacing with ground-referenced sensors and resistive dividers. |
| Rail-to-Rail Output | Yes, no pull-up required - simplifies interface to 1.8V/3.3V/5V logic families without level-shifting components. |
| Input Hysteresis (high-speed) | 0.3–4mV typical - suppresses chatter on slow-moving or noisy inputs like thermistor or photodiode signals. |
| Auto-Standby Timeout | Programmable from ~1µs to >1s via 1–100nF capacitor on STO pin - enables adaptive power management per signal activity. |
Pinout & Package
The MAX975EUA+ is housed in an 8-pin µMAX® package (U8-1), 3mm × 3mm, 0.5mm pitch, thermally enhanced with exposed pad. Pin assignments are validated per Maxim's official datasheet Rev 2 (19-1141).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 VCC | Positive supply input | +2.7V to +5.25V single supply; requires local 0.1µF ceramic decoupling for stable high-speed operation. |
| 2 IN+ | Noninverting input | Accepts signals down to –0.2V; used for threshold comparison against reference or sensor voltage. |
| 3 IN− | Inverting input | Ground-sensing capable; enables direct connection to low-side current-sense shunts or photodiodes. |
| 4 STAT | Mode status output | Open-drain capable (3mA source); high = auto-standby or low-power mode, low = high-speed active. |
| 5 STO | Standby timeout programming | Connect external capacitor (100pF–100nF) to GND to set idle timeout; tie to GND to disable auto-standby. |
| 6 GND | Ground reference | Must connect to low-impedance ground plane; shares thermal pad for power dissipation management. |
| 7 OUT | Comparator output | Rail-to-rail push-pull; drives CMOS/TTL loads directly; retains logic state during mode transitions. |
| 8 LP | Low-power mode control | High = force low-power mode (480ns tPD, 3µA); low = enable high-speed or auto-standby operation. |
Key Features
| Feature | Design Value |
|---|---|
| Three selectable operating modes | High-speed (28ns), auto-standby (adaptive 3µA/480ns), and forced low-power (3µA/480ns) - enables precise trade-off between latency and energy per event. |
| Adjustable auto-standby timeout | Set via single external capacitor (tASB = 10 × CSTO µs) - eliminates firmware intervention for dynamic power scaling in intermittent-signal applications. |
| Rail-to-rail output without pull-ups | Push-pull driver compatible with 1.8V–5V logic - reduces BOM count and PCB area in space-constrained portable designs. |
| Ground-sensing input stage | Common-mode range includes –0.2V - supports direct interface to shunt-based current monitors and photodiode transimpedance amps. |
| Internal hysteresis (high-speed mode) | 0.3–4mV input-referred - prevents oscillation on slowly varying inputs (e.g., temperature ramps, IR burst envelopes) without external feedback. |
Applications
| IR Receiver Front-End | Loss-of-Signal Detector |
|---|---|
|
Use Scenario: Detecting modulated infrared pulses from remote controls in battery-powered consumer devices. IC Role / Device Role / Timing Role: High-speed comparator with auto-standby acts as signal presence detector and wake-up trigger; STAT pin signals microcontroller only when valid bursts occur. Use Value: Reduces average system current by >99% during idle periods while maintaining <30ns response to incoming IR carrier edges. |
Use Scenario: Monitoring integrity of analog sensor outputs (e.g., pressure, humidity) in industrial telemetry nodes. IC Role / Device Role / Timing Role: Threshold discriminator comparing sensor voltage against reference; STAT pin asserts high when signal falls outside window, indicating fault or disconnection. Use Value: Enables autonomous fault reporting without MCU polling, cutting background power by eliminating ADC wake cycles. |
| Battery Voltage Monitor | RFID Tag Wake-Up Circuit |
|
Use Scenario: Undervoltage lockout and battery health alert in coin-cell-powered medical wearables. IC Role / Device Role / Timing Role: Low-power comparator continuously monitors VBAT against precision reference; switches to high-speed mode only during critical brownout transitions. Use Value: Achieves sub-5µA total quiescent current for multi-year operation while guaranteeing <100µs response to voltage collapse. |
Use Scenario: Enabling ultra-low-power RFID tag ICs upon detection of reader field activation. IC Role / Device Role / Timing Role: High-speed comparator senses induced AC envelope on antenna coil; auto-standby minimizes leakage during field absence. Use Value: Extends passive tag read range by minimizing standby current drain, allowing faster wake-up (<1µs) than integrated comparators in tag SoCs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3501CDR | Single 4.5ns comparator, no auto-standby, 2.7–5.5V supply, 8.5mA ICC | Requires external power-gating logic for low-power operation; lacks integrated timeout control. | Choose when nanosecond-level speed is mandatory and system-level power management is already implemented. |
| MAX9060AXK+T | Single micropower comparator (1.7µA), 12µs tPD, no auto-standby, SC70-5 package | Fixed ultra-low ICC but no high-speed fallback; no STAT or STO pins for adaptive control. | Choose for always-on, low-frequency threshold detection where latency >10µs is acceptable and board space is critical. |
Compared with TLV3501CDR and MAX9060AXK+T, the MAX975EUA+ uniquely integrates three operational modes-including programmable auto-standby-within a single 8-pin µMAX package, delivering both sub-30ns responsiveness and sub-5µA quiescent current without external control circuitry or layout overhead.
Availability
The MAX975EUA+ is available at Aetrix Electronics and suitable for battery-powered systems, IR receivers, and threshold detectors requiring stable component supply across automotive-grade temperature ranges (–40°C to +85°C) and long-lifecycle production programs.
Supply support for MAX975EUA+ 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 precision analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX975EUA+ belongs to Maxim's high-performance comparator product line, engineered specifically for adaptive power management in energy-constrained, signal-event-driven systems such as RFID tags, wireless sensors, and portable medical devices.
FAQ
What is the function of the STAT pin on the MAX975EUA+?
The STAT pin on the MAX975EUA+ indicates operating mode: high during auto-standby or low-power mode, low during high-speed operation. It functions as an open-drain output capable of sourcing up to 3mA, enabling it to power auxiliary circuitry (e.g., LED indicators or bias networks) only when the comparator is not actively processing fast signals-thus reducing system-level quiescent current. The MAX975EUA+ uses STAT to provide real-time mode visibility without requiring additional GPIO reads.
How is the auto-standby timeout period set for the MAX975EUA+?
The auto-standby timeout for the MAX975EUA+ is set by connecting an external capacitor between the STO pin and GND. The timeout follows tASB = 10 × CSTO µs, where CSTO is in pF-e.g., a 100nF capacitor yields ~1 second. Ceramic capacitors are recommended due to low leakage (<1nA); aluminum/tantalum types are unsuitable. The MAX975EUA+ enters standby only after OUT remains stable for this duration, and exits immediately upon output transition.
Can the MAX975EUA+ operate from a 3.3V supply?
Yes, the MAX975EUA+ operates over a +2.7V to +5.25V single supply range, fully specified at 3.3V. At VCC = 3.3V, it maintains 28ns propagation delay in high-speed mode, rail-to-rail output swing (0.1V to 3.2V), and –0.2V to 2.1V common-mode input range-enabling direct interface with 3.3V microcontrollers and sensors. All electrical characteristics in the datasheet, including supply current (250µA high-speed, 3µA low-power), are guaranteed across this voltage range.
What is the purpose of the LP pin on the MAX975EUA+?
The LP (Low Power) pin on the MAX975EUA+ is a digital control input that forces operational mode: driving LP high selects low-power mode (480ns tPD, ≤5µA ICC), while driving LP low enables high-speed mode or auto-standby (depending on STO configuration). It is noise-sensitive; if input fall times exceed 10µs, a 0.1µF bypass capacitor to GND is required. The MAX975EUA+ uses LP to provide deterministic, pin-controlled mode selection independent of signal activity.
Does the MAX975EUA+ require external hysteresis for stable operation?
No, the MAX975EUA+ includes internal hysteresis (0.3–4mV input-referred) specifically in high-speed mode, eliminating the need for external positive feedback resistors in most applications. This hysteresis ensures clean, chatter-free output transitions even with slow-moving or noisy inputs-such as those from thermistors or ambient-light sensors. External hysteresis is only necessary if wider switching thresholds are required beyond the device's built-in range, which is uncommon in standard threshold-detection use cases for the MAX975EUA+.
MAX975EUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- CMOS, Rail-to-Rail, TTL
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 5.25V
- :
- 2mV @ 5V
- Voltage - Input Offset (Max):
- 0.1µA @ 5.25V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 500µA
- Current - Quiescent (Max):
- 82dB CMRR, 90dB PSRR
- CMRR, PSRR (Typ):
- 820ns
- Propagation Delay (Max):
- 4mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-uMAX/uSOP
MAX975EUA+ FAQ
1.How can I place an order for MAX975EUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX975EUA+ 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 MAX975EUA+ reliable?
The price and inventory of MAX975EUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX975EUA+ is usually 5 days.
3.What payment methods are accepted for MAX975EUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX975EUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX975EUA+?
MAX975EUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX975EUA+ 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 MAX975EUA+?
For technical support, including MAX975EUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX975EUA+ requirements.
6.How does Aetrix verify that MAX975EUA+ is sourced from the original manufacturer or authorized distributors?
All MAX975EUA+ 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 MAX975EUA+ meets industry standards.
7.What is the process for return or replacement of MAX975EUA+?
All MAX975EUA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX975EUA+, 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 MAX975EUA+ part is unused and in its original packaging.
Return procedure for MAX975EUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX975EUA+ Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP USA Inc.
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
