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Analog Devices Inc./Maxim Integrated MAX988EUK
- Part No.:
- MAX988EUK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX988EUK.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:866
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Product details
Overview
MAX988EUK from Maxim Integrated is a single-channel, micropower, rail-to-rail input/output comparator with open-drain output stage, operating from +2.5V to +5.5V single supply or ±1.25V to ±2.75V dual supply. It delivers 120ns propagation delay, 48µA quiescent supply current per comparator, and supports output pull-up beyond VCC to 6V above VEE - ideal for level translation in portable battery-powered systems and IR receivers.
For engineers reviewing the MAX988EUK datasheet, MAX988EUK pinout, MAX988EUK application, or MAX988EUK equivalent, key selection considerations include its open-drain architecture enabling bipolar-to-single-ended conversion, rail-to-rail input range extending 250mV beyond rails, low input bias current (1.0pA typ), and guaranteed operation across –40°C to +85°C.
Technical Context
The MAX988EUK implements a precision input stage with common-mode voltage range from –0.25V to (VCC + 0.25V) and internal hysteresis of ±2.5mV, ensuring clean switching with slow-moving signals. Its open-drain output stage allows external pull-up to voltages up to 6V above VEE, decoupling logic-level domains without level-shifter ICs.
This comparator uses a unique output switching design that minimizes supply-current surges - ICC increases only to 100µA at 1MHz output transition frequency - eliminating need for large supply bypassing and reducing power-supply noise coupling in sensitive analog subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +5.5V single supply; ±1.25V to ±2.75V dual supply - supports direct integration into 3V/5V mixed-signal systems and legacy ±2.5V designs. |
| Propagation Delay | 120ns (typ) at 100mV overdrive - enables high-speed zero-crossing detection and fast threshold monitoring in real-time control loops. |
| Quiescent Supply Current | 48µA per comparator (typ) - extends battery life in always-on sensor nodes and portable instrumentation. |
| Input Offset Voltage | ±7mV (max) - ensures accurate threshold detection down to sub-10mV signal levels without trimming. |
| Input Bias Current | 1.0pA (typ) - preserves signal integrity in high-impedance sensor interfaces (e.g., photodiode, thermopile). |
| Output Stage | Open-drain with 6V absolute max pull-up above VEE - enables bidirectional logic-level translation between 3V/5V/1.8V domains without external FETs. |
| Common-Mode Input Range | Extends 250mV beyond rails (–0.25V to VCC+0.25V) - accommodates inputs exceeding supply rails, simplifying anti-aliasing filter design. |
Pinout & Package
MAX988EUK is housed in a 5-pin SOT23-5 package (package code U5-1, top mark ABZC), with exposed pad not electrically connected. The compact 2.9mm × 1.6mm footprint supports high-density PCB layouts in space-constrained applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Positive supply input - accepts +2.5V to +5.5V; must be decoupled with 0.1µF ceramic capacitor placed adjacent to pin. |
| 2 | IN− | Inverting input - high-impedance node (1.0pA bias current); supports common-mode voltages down to –0.25V. |
| 3 | IN+ | Noninverting input - identical electrical characteristics to IN−; differential input voltage range unrestricted within common-mode limits. |
| 4 | OUT | Open-drain output - requires external pull-up resistor; capable of sinking ≥8mA while maintaining VOL ≤400mV at VCC = 2.7V. |
| 5 | VEE | Negative supply / ground reference - tied to 0V in single-supply operation; supports negative rail down to –2.75V in dual-supply mode. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O with extended common-mode range | Inputs operate –0.25V to VCC+0.25V; outputs swing fully to rails under 8mA load - eliminates need for external level-shifting circuitry in sensor front-ends. |
| Ultra-low quiescent current | 48µA per comparator (typ) - enables >1-year battery life in coin-cell–powered IoT endpoints with 1Hz wake-up rate. |
| Open-drain output with 6V over-VCC tolerance | OUT pin withstands up to 6V above VEE - permits direct interfacing to 3.3V/5V logic families while powered from lower-voltage rails. |
| Internal hysteresis | ±2.5mV fixed hysteresis - prevents chatter on noisy or slowly varying inputs (e.g., thermistor outputs, audio envelope detection). |
| Minimal supply-current surge during switching | ICC increases only ~52µA from quiescent to 1MHz switching - avoids destabilizing shared LDOs in multi-rail embedded systems. |
Applications
| Portable Power Management | IR Remote Signal Detection |
|---|---|
Use Scenario: Monitoring battery voltage against low-battery cutoff threshold in handheld medical devices. IC Role / Device Role / Timing Role: Comparator configured as threshold detector with hysteresis; triggers MCU interrupt on crossing 3.0V nominal Li-ion discharge point. Use Value: 48µA quiescent current minimizes standby drain; rail-to-rail inputs accept direct connection to battery without resistive divider. | Use Scenario: Demodulating 38kHz carrier pulses from IR photodiode in consumer remote receivers. IC Role / Device Role / Timing Role: High-speed comparator acting as zero-crossing detector; converts AC-coupled IR signal into clean digital pulse train. Use Value: 120ns propagation delay preserves timing fidelity of short-duration IR bursts; low input bias current prevents photodiode signal attenuation. |
| Logic-Level Translation | Ground/Supply Sensing |
Use Scenario: Converting 5V microcontroller GPIO outputs to 3.3V-compatible inputs for FPGA configuration interface. IC Role / Device Role / Timing Role: Open-drain buffer with external 3.3V pull-up; provides unidirectional level shift without direction-control pins. Use Value: OUT tolerates 6V above VEE - allows VCC = 3.3V while pulling up to 5V, eliminating need for dedicated translator ICs. | Use Scenario: Detecting loss of 12V auxiliary supply in automotive infotainment head units. IC Role / Device Role / Timing Role: High-side supply monitor using resistive divider feeding IN+; VEE tied to chassis ground, VCC powered from regulated 5V rail. Use Value: Common-mode range extends 250mV beyond rails - enables direct sensing of 12V with 2.4:1 divider (4.8V at IN+) without clamping diodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3701IDBVR | Single open-drain comparator with 1.8V–5.5V supply, 350ns propagation delay, 800nA IQ - higher speed not required; 17× higher quiescent current than MAX988EUK. | Less suitable for battery-critical applications; lacks rail-to-rail input beyond rails - requires input clamping for overvoltage tolerance. | Select when ultra-low IQ is secondary to cost and availability; verify input common-mode compliance for target signal range. |
| LMV7215M5X | Single open-drain comparator with 2.7V–5.5V supply, 160ns propagation delay, 80µA IQ - 67% higher quiescent current, no specified over-VCC output tolerance. | Cannot safely interface to pull-up voltages >VCC; limited common-mode range (to VCC–0.1V) restricts high-side sensing capability. | Prefer for non-battery applications where supply filtering is already robust; avoid in level-translation or overvoltage-tolerant designs. |
Compared with TLV3701IDBVR and LMV7215M5X, the MAX988EUK offers the lowest quiescent current (48µA), widest input common-mode range (–0.25V to VCC+0.25V), and highest output overvoltage tolerance (6V above VEE), making it uniquely suited for energy-constrained, multi-rail, and high-reliability sensing roles.
Availability
MAX988EUK is available at Aetrix Electronics and suitable for portable/battery-powered systems, IR receivers, level translators, and ground/supply sensing requiring stable component supply and long-term industrial temperature support (–40°C to +85°C).
Supply support for MAX988EUK 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 high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX987/MAX988 family was designed specifically for micropower, high-speed, rail-to-rail comparator applications in space- and energy-constrained systems - emphasizing low IQ, fast response, and robust input/output interface flexibility.
FAQ
What is the maximum allowable voltage on the MAX988EUK OUT pin relative to VEE?
The MAX988EUK OUT pin is rated for voltages up to +6V above VEE under steady-state conditions, as specified in the Absolute Maximum Ratings table. This allows safe use with external pull-up resistors connected to higher-voltage logic rails (e.g., 5V pull-up while VCC = 3.3V). Exceeding this limit risks permanent damage to the output transistor.
Does the MAX988EUK require external hysteresis for reliable operation with noisy inputs?
The MAX988EUK includes internal hysteresis of ±2.5mV, which is sufficient for most applications with moderate noise (e.g., IR receiver outputs, filtered sensor signals). For highly noisy environments or precise threshold control, external positive-feedback hysteresis can be added using three resistors per the application circuit in Figure 2 of the datasheet - but this increases trip-point uncertainty and slows response.
Can the MAX988EUK operate from a single 2.5V supply?
Yes, the MAX988EUK is fully specified for single-supply operation from +2.5V to +5.5V. At VCC = 2.5V, it maintains rail-to-rail input common-mode range (–0.25V to +2.75V), 120ns propagation delay (typ), and 48µA supply current - making it suitable for ultra-low-voltage systems such as energy-harvesting sensors and coin-cell–powered wearables.
What is the output sink current capability of the MAX988EUK at VCC = 2.7V?
At VCC = 2.7V and TA = +25°C, the MAX988EUK guarantees an output low voltage (VOL) ≤400mV while sinking 3.5mA (per Electrical Characteristics table). This corresponds to a typical output resistance of ~114Ω, supporting direct drive of LED indicators, small MOSFET gates, or standard logic inputs with appropriate pull-up sizing.
Is the MAX988EUK pin-compatible with other comparators in the MAX987/MAX988 family?
Yes, the MAX988EUK shares identical 5-pin SOT23-5 pinout and footprint with the MAX987EUK (push-pull version), enabling drop-in replacement in layouts where output stage topology allows. However, substituting MAX988EUK for MAX987EUK requires adding an external pull-up resistor, and vice versa requires removing it - both changes affect system-level timing and power behavior.
MAX988EUK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-74A, SOT-753
- Series:
- MAX988
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Open-Drain, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 5.5V, ±1.25V ~ 2.75V
- :
- 5mV @ 5.5V
- Voltage - Input Offset (Max):
- 10pA @ 5.5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 80µA
- Current - Quiescent (Max):
- 80dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 210ns (Typ)
- Propagation Delay (Max):
- ±2.5mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-5
MAX988EUK FAQ
1.How can I place an order for MAX988EUK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX988EUK 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 MAX988EUK reliable?
The price and inventory of MAX988EUK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX988EUK is usually 5 days.
3.What payment methods are accepted for MAX988EUK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX988EUK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX988EUK?
MAX988EUK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX988EUK 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 MAX988EUK?
For technical support, including MAX988EUK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX988EUK requirements.
6.How does Aetrix verify that MAX988EUK is sourced from the original manufacturer or authorized distributors?
All MAX988EUK 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 MAX988EUK meets industry standards.
7.What is the process for return or replacement of MAX988EUK?
All MAX988EUK units undergo pre-shipment inspection (PSI). If there is an issue with MAX988EUK, 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 MAX988EUK part is unused and in its original packaging.
Return procedure for MAX988EUK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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