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Analog Devices Inc./Maxim Integrated MAX975EUA+T
- Part No.:
- MAX975EUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX975EUA+T.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,558
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Product details
Overview
The MAX975EUA+T from Maxim Integrated is a single high-speed comparator with auto-standby and low-power operating modes, optimized for +3V/+5V single-supply battery-powered systems. It delivers 28ns propagation delay in high-speed mode, 3µA supply current in low-power mode, and rail-to-rail output swing without external pull-ups-enabling direct CMOS/TTL interfacing in IR receivers and threshold detectors.
For engineers reviewing the MAX975EUA+T datasheet, MAX975EUA+T pinout, MAX975EUA+T application, or MAX975EUA+T equivalent, key selection criteria include adjustable auto-standby timeout via STO capacitor, ground-sensing input capability (–0.2V to VCC–1.2V), internal hysteresis in high-speed mode, and fault-tolerant rail-to-rail I/O.
Technical Context
The MAX975EUA+T implements dual-path comparator architecture: a fast high-speed path (28ns tPD) and a slower low-power path (480ns tPD), dynamically selected via LP control and STO-monitored idle detection. Its timing circuit monitors output transitions to trigger auto-standby entry after programmable timeout (tASB = 10 × CSTO µs) and wake-up on next transition.
Input stage supports rail-to-rail differential voltage while maintaining –0.2V to (VCC–1.2V) common-mode range; internal hysteresis (0.3–4mV) prevents oscillation near trip points. STAT pin provides real-time mode status and 3mA sourcing capability for auxiliary circuit power control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay (high-speed) | 28ns typical - enables 35MHz signal edge detection in timing-critical applications |
| Supply Current (low-power) | 3µA max - extends battery life in always-on sensor monitoring |
| Common-Mode Input Range | –0.2V to (VCC–1.2V) - supports ground-referenced inputs in 3V systems |
| Rail-to-Rail Output | VOH ≥ 0.7×VCC, VOL ≤ 0.4V - eliminates need for external pull-up resistors when driving CMOS/TTL |
| Input Hysteresis | 0.3–4mV - suppresses chatter on slow-moving or noisy input signals |
| Auto-Standby Timeout | Programmable via STO capacitor (tASB = 10 × CSTO µs) - allows precise idle-duration control from µs to seconds |
| Operating Supply | +2.7V to +5.25V - compatible with Li-ion, 3.3V, and 5V logic rails |
Pinout & Package
The MAX975EUA+T is housed in an 8-pin µMAX package (U8-1), measuring 3mm × 3mm × 0.8mm with exposed pad for thermal enhancement and fine-pitch gull-wing leads.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Positive supply input | Accepts +2.7V to +5.25V; requires local 0.1µF ceramic decoupling |
| IN+ (Pin 2) | Noninverting input | Rail-to-rail capable; supports common-mode down to –0.2V for ground-sensing |
| IN– (Pin 3) | Inverting input | Same rail-to-rail and common-mode specs as IN+ |
| STAT (Pin 4) | Mode status output | High = auto-standby or low-power mode; sources up to 3mA for auxiliary circuitry |
| GND (Pin 6) | Analog/digital ground | Must connect to low-impedance ground plane; shared reference for all signals |
| OUT (Pin 7) | Comparator output | Rail-to-rail CMOS output; drives loads directly without pull-up |
| LP (Pin 8) | Low-power mode control | High = low-power mode (3µA); low = high-speed or auto-standby mode |
| STO (Pin 5) | Standby timeout programming | Connect external capacitor to GND; sets idle timeout (tASB = 10 × CSTO µs) |
Key Features
| Feature | Design Value |
|---|---|
| Three selectable operating modes | High-speed (28ns), auto-standby (dynamic mode switching), and low-power (3µA) - enables adaptive power management |
| Adjustable auto-standby timeout | Set by single external capacitor on STO pin - supports timeout from microseconds to seconds without firmware |
| Rail-to-rail output drive | No external pull-up required - simplifies PCB layout and reduces BOM count in CMOS/TTL interface designs |
| Ground-sensing input capability | Common-mode range extends to –0.2V - enables direct connection to 0V-referenced sensors like photodiodes |
| Fault-tolerant I/O | All pins withstand continuous short-circuit to either rail - improves robustness in industrial and automotive environments |
Applications
| IR Receivers | Threshold Detectors |
|---|---|
Use Scenario: Detecting modulated infrared signals from remote controls in portable devices. IC Role / Device Role / Timing Role: Comparator converts photodiode current into clean digital pulses; STAT pin indicates loss-of-signal condition. Use Value: Auto-standby reduces average current to <10µA during idle periods, extending battery life in handheld remotes. | Use Scenario: Monitoring battery voltage against preset thresholds in wearables and IoT sensors. IC Role / Device Role / Timing Role: Compares sensed voltage to reference; triggers wake-up or alert on crossing defined upper/lower limits. Use Value: Ground-sensing input (–0.2V common-mode) enables direct connection to battery terminals without level-shifting. |
| RF ID Tags | Keyless Entry Systems |
Use Scenario: Demodulating weak RF carrier signals in passive RFID tags powered by reader field. IC Role / Device Role / Timing Role: High-speed comparator recovers data edges; low-power mode minimizes quiescent drain during tag sleep. Use Value: 28ns propagation delay ensures accurate decoding of high-frequency modulation schemes (e.g., 13.56MHz). | Use Scenario: Sensing door handle capacitance change or fob proximity in automotive access systems. IC Role / Device Role / Timing Role: Comparator detects analog sensor output crossing threshold; STAT output powers RF transmitter only when needed. Use Value: STAT's 3mA sourcing capability enables zero-quiescent-current wake-up of transceiver ICs upon valid event detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV7215M5X | Single 45ns comparator, no auto-standby, 65µA supply current in active mode | Lacks dynamic power scaling; suited for fixed-speed, non-battery-critical designs | Select when simplicity and cost outweigh adaptive power needs |
| TLV3604DBVR | Single 4.5ns comparator with 1.2mA supply current; no low-power or standby modes | Optimized for ultra-high-speed (>100MHz) overdrive conditions, not low-duty-cycle sensing | Select when nanosecond response dominates power budget concerns |
Compared with LMV7215M5X and TLV3604DBVR, the MAX975EUA+T uniquely balances sub-30ns speed with microamp-level quiescent current and hardware-programmable auto-standby-making it the only option supporting both precision timing and multi-year battery operation in intermittent-signal applications.
Availability
MAX975EUA+T is available at Aetrix Electronics and suitable for battery-powered systems, IR receivers, and threshold detectors requiring stable component supply across industrial temperature ranges (–40°C to +85°C).
Supply support for MAX975EUA+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 demanding environments.
The MAX975EUA+T belongs to Maxim's high-performance comparator family engineered specifically for adaptive power management in portable and energy-constrained systems.
FAQ
What are the three operating modes of the MAX975EUA+T and how are they controlled?
The MAX975EUA+T operates in high-speed mode (28ns tPD, 250µA), low-power mode (480ns tPD, 3µA), and auto-standby mode (dynamic switching between high-speed and low-power). Mode selection is controlled via the LP pin (high = low-power, low = high-speed/auto-standby) and STO pin (capacitor sets timeout before entering standby). The MAX975EUA+T automatically enters auto-standby when OUT remains static for the programmed timeout period.
How is the auto-standby timeout period set for the MAX975EUA+T?
The MAX975EUA+T auto-standby timeout is set by connecting an external capacitor between the STO pin and GND. The relationship is tASB = 10 × CSTO µs, where CSTO is in pF. For example, a 100pF capacitor yields a 1µs timeout, while a 0.1µF capacitor yields a 1s timeout. Ceramic capacitors are recommended due to low leakage (<1nA).
Does the MAX975EUA+T require external pull-up resistors on its output?
No, the MAX975EUA+T does not require external pull-up resistors. Its rail-to-rail output stage delivers VOH ≥ 0.7×VCC and VOL ≤ 0.4V across the full supply range (+2.7V to +5.25V), enabling direct interfacing with CMOS and TTL logic families without additional components.
What is the function of the STAT pin on the MAX975EUA+T?
The STAT pin on the MAX975EUA+T indicates operating mode: high during auto-standby, low-power, or transition to high-speed mode; low only in steady-state high-speed mode. It also sources up to 3mA, allowing it to power auxiliary circuitry (e.g., RF transceivers) only when the comparator is active or transitioning-reducing system-level quiescent current.
Can the MAX975EUA+T interface directly with ground-referenced sensors?
Yes, the MAX975EUA+T supports ground-sensing operation: its input common-mode voltage range extends to –0.2V, allowing direct connection to 0V-referenced sensors such as photodiodes or thermistors without level-shifting circuitry. This capability is confirmed in the Electrical Characteristics table under VCMR (–0.2V to VCC–1.2V).
MAX975EUA+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:
- 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+T FAQ
1.How can I place an order for MAX975EUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX975EUA+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 MAX975EUA+T reliable?
The price and inventory of MAX975EUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX975EUA+T is usually 5 days.
3.What payment methods are accepted for MAX975EUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX975EUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX975EUA+T?
MAX975EUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX975EUA+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 MAX975EUA+T?
For technical support, including MAX975EUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX975EUA+T requirements.
6.How does Aetrix verify that MAX975EUA+T is sourced from the original manufacturer or authorized distributors?
All MAX975EUA+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 MAX975EUA+T meets industry standards.
7.What is the process for return or replacement of MAX975EUA+T?
All MAX975EUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX975EUA+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 MAX975EUA+T part is unused and in its original packaging.
Return procedure for MAX975EUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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