MAX985EUK+T
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | SC-74A, SOT-753 |
| Mfr | Analog Devices Inc./Maxim Integrated |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C |
| Type | General Purpose |
| Output Type | CMOS, Push-Pull, Rail-to-Rail, TTL |
| Number of Elements | 1 |
| Supplier Device Package | SOT-23-5 |
| Hysteresis | ±3mV |
| Voltage - Supply, Single/Dual (±) | 2.5V ~ 5.5V, ±1.25V ~ 2.75V |
| Voltage - Input Offset (Max) | 5mV @ 5.5V |
| Current - Input Bias (Max) | 1pA @ 5.5V |
| Current - Output (Typ) | - |
| Current - Quiescent (Max) | 24µA |
| CMRR, PSRR (Typ) | 80dB CMRR, 80dB PSRR |
| Propagation Delay (Max) | 450ns |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | MAX985 |
| REACH Status | REACH Unaffected |
| Standard Package | 2,500 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
MAX985EUK+T Comparator General Purpose CMOS Rail-to-Rail
The MAX985EUK+T is a single-channel, micropower, low-voltage comparator with rail-to-rail inputs and outputs, fabricated in a CMOS process and housed in a 5-pin SOT-23-5 package, optimized for portable and battery-powered systems that demand minimal supply current and clean switching behavior. It operates from a single 2.5V to 5.5V supply or dual ±1.25V to ±2.75V rails, typically draws only about 11µA of quiescent supply current, and delivers a propagation delay of around 300ns, making it well-suited for threshold detection, zero-crossing, and digital line receiver applications where both power and response time are critical.
This chip features rail-to-rail input and output capability with a common-mode input range that extends 250mV beyond the supply rails, an internal hysteresis of typically a few millivolts to ensure noise-immune switching, and a push-pull output stage that can both source and sink up to 8mA while maintaining rail-to-rail output swing, which simplifies interfacing to CMOS/TTL logic and eliminates the need for an external pull-up resistor in many designs. Its unique output stage design limits supply-current glitches during output transitions, significantly reducing supply noise and overall dynamic power consumption, even when toggling at frequencies up to 1MHz, where the average supply current remains in the tens of microamps, further extending battery life in handheld instrumentation and mobile communications equipment.
Alternative micropower low-voltage comparators
● LMV331IDBVR: A low-voltage, general-purpose single comparator from TI in SOT-23-5 with 1.8V–5.5V operation, open-drain output, and low quiescent current, ideal for battery monitoring and logic-level translation in cost-sensitive portable designs.
● MCP6561T-E/OT: A Microchip 1.8V–5.5V, push-pull output comparator in SOT-23-5 with sub-100ns propagation delay, integrated hysteresis, and AEC-Q100 options, suitable for high-speed, low-power sensing and automotive-grade threshold detection.
● TLV3012: A TI nanopower comparator with an integrated 1.242V reference, push-pull output, 1.8V–5.5V supply, and 6µs propagation delay in SOT-23-6, enabling precision threshold detection and system monitoring with minimal external components.
