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Analog Devices Inc./Maxim Integrated MAX998EUT
- Part No.:
- MAX998EUT
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SOT-23-6
- Datasheet:
-
MAX998EUT.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:197
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Product details
Overview
MAX998EUT from Maxim Integrated is a single high-speed, low-power comparator optimized for +2.7V to +5.5V single-supply operation in space-constrained systems. It delivers 20ns propagation delay, 225µA supply current per comparator, and 1nA shutdown current, with rail-to-rail output and ground-sensing inputs - enabling direct interface with CMOS/TTL logic in battery-powered threshold detection circuits.
For engineers reviewing the MAX998EUT datasheet, MAX998EUT pinout, MAX998EUT application, or MAX998EUT equivalent, this page provides verified technical context, SOT23-6 package mapping, shutdown timing (tSD = 5µs), wake-up delay (tEN = 15µs), and real-world IR receiver and line receiver implementation details.
Technical Context
The MAX998EUT implements a push-pull output stage capable of rail-to-rail sourcing/sinking without external pull-ups, supporting direct CMOS/TTL interfacing. Its input common-mode range extends from –0.2V to (VCC – 1.2V), allowing ground-sensing operation and tolerance of input faults to either rail.
Internal hysteresis (0.5mV typ, 4.0mV max) ensures clean switching with slow-moving signals, while shutdown control (SHDN pin) disables the comparator and places OUT in high-impedance state. Propagation delay matching (ΔtPD = 1ns) and skew (tSKEW = 2ns) are specified only for dual/quad variants; MAX998EUT has no channel-matching requirement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 20ns typical at VCC = 5V, 50mV overdrive - enables high-speed signal discrimination in digital receivers. |
| Supply Current | 225µA per comparator at TA = +25°C - supports multi-year battery life in always-on sensing nodes. |
| Shutdown Current | 1nA typical when SHDN = GND - reduces quiescent power by >200,000× versus active mode. |
| Input Common-Mode Range | –0.2V to (VCC – 1.2V) - allows direct connection to grounded sensors or negative-biased transducers. |
| Rail-to-Rail Output | VOH ≥ VCC – 0.4V (ISOURCE = 2mA), VOL ≤ 0.4V (ISINK = 2mA) - eliminates need for level-shifting circuitry. |
| Hysteresis | 0.5mV (typ), 4.0mV (max) input-referred - suppresses noise-induced chatter on slow analog inputs. |
| PSRR / CMRR | 63dB PSRR, 66dB CMRR at VCC = 5V - maintains trip-point stability under supply ripple or common-mode noise. |
Pinout & Package
SOT23-6 package: 2.9mm × 1.6mm × 1.1mm body, gull-wing leads, thermal pad not present. RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for all internal circuitry; must connect to low-impedance system ground plane. |
| 2 | IN− | Inverting input; accepts voltages down to –0.2V, supports differential or single-ended configurations. |
| 3 | IN+ | Noninverting input; same voltage range as IN−; used with external hysteresis resistors if needed. |
| 4 | SHDN | Active-low shutdown control; VIH = 0.65×VCC, VIL = 0.2×VCC; must not be left floating. |
| 5 | OUT | Push-pull output; high-impedance during shutdown; drives CMOS/TTL loads directly. |
| 6 | VCC | Positive supply input; operates from +2.7V to +5.5V; requires local 0.1µF ceramic decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | Functional from 2.7V to 5.5V - eliminates need for dual supplies in portable 3V/5V systems. |
| Ground-sensing inputs | Common-mode range includes –0.2V - enables direct interface with current-output photodiodes or shunt monitors. |
| Rail-to-rail output drive | No external pull-up required - reduces BOM count and PCB area in high-density layouts. |
| Internal hysteresis | Guaranteed 0.5–4.0mV input-referred - prevents oscillation without external feedback components. |
| Low-power shutdown | 1nA ICC in shutdown - preserves battery charge during idle periods in wake-on-event architectures. |
Applications
| IR Receiver Front-End | Digital Line Receiver |
|---|---|
|
Use Scenario: Detecting modulated infrared pulses from remote controls or proximity sensors using a photodiode and load resistor. IC Role / Device Role / Timing Role: Comparator acting as fast threshold detector; converts analog photodiode current into clean digital pulses. Use Value: 20ns propagation delay ensures accurate pulse edge capture at >1MHz carrier frequencies; rail-to-rail output directly drives microcontroller GPIO. |
Use Scenario: Recovering digital data from noisy, unterminated transmission lines in industrial RS-485 stubs or legacy bus interfaces. IC Role / Device Role / Timing Role: High-speed line receiver with hysteresis; rejects EMI-induced glitches on long traces. Use Value: –0.2V to (VCC–1.2V) input range accommodates ground offsets and common-mode noise; 1nA shutdown enables dynamic power gating. |
| Battery Voltage Monitor | Threshold Discriminator |
|
Use Scenario: Monitoring Li-ion cell voltage to trigger low-battery alerts or safe-shutdown sequences in wearables. IC Role / Device Role / Timing Role: Precision comparator comparing battery voltage against stable reference (e.g., MAX6120). Use Value: 0.2mV typical input offset voltage minimizes trip-point error; 66dB CMRR rejects supply-coupled noise during charging cycles. |
Use Scenario: Converting analog sensor outputs (e.g., temperature, light, pressure) into binary presence/absence signals. IC Role / Device Role / Timing Role: Fast-response discriminator with user-adjustable hysteresis via external resistors. Use Value: Internal 4mV max hysteresis prevents chatter on slow ramps; SOT23-6 footprint saves >60% board area vs. SO-8 alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV7215M5X | 25ns propagation delay, 550µA supply current, no shutdown pin, SC70-5 package. | Lacks shutdown mode and ground-sensing capability; requires external pull-up for open-drain output. | Select when ultra-low cost outweighs shutdown functionality and input range requirements. |
| TLV3501DBVR | 4.5ns propagation delay, 5.3mA supply current, rail-to-rail input/output, SOT23-6 package. | Higher speed and power; input common-mode range limited to (V–) + 0.2V to (V+) – 0.2V - cannot sense below ground. | Select for sub-5ns timing-critical paths where ground-sensing is unnecessary and supply current is not constrained. |
Compared with MAX998EUT, LMV7215M5X trades shutdown and ground-sensing for lower unit cost, while TLV3501DBVR offers 4.5× faster response at 23× higher supply current and no sub-ground input support - making MAX998EUT optimal for battery-powered, ground-referenced, intermittently active detection systems.
Availability
MAX998EUT is available at Aetrix Electronics and suitable for battery-powered systems, IR receivers, and digital line receivers requiring stable component supply across automotive, industrial, and medical OEM programs.
Supply support for MAX998EUT 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, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX998EUT belongs to Maxim's high-speed comparator family targeting low-voltage, low-power sensing - engineered specifically for reliable operation in 3V systems with ground-referenced inputs and minimal board area.
FAQ
What is the guaranteed operating temperature range for MAX998EUT?
The MAX998EUT is specified over the –40°C to +85°C industrial temperature range. All electrical parameters in the datasheet are guaranteed across this range by design, though production testing occurs at +25°C per Note 1. Thermal derating applies above +70°C: 7.1mW/°C for the SOT23-6 package. This makes MAX998EUT suitable for deployment in automotive cabin modules and outdoor industrial sensors.
Does MAX998EUT require external pull-up resistors on its output?
No, MAX998EUT does not require external pull-up resistors. Its push-pull output stage provides rail-to-rail sourcing and sinking capability - VOH ≥ VCC – 0.4V at 2mA source current and VOL ≤ 0.4V at 2mA sink current. This allows direct interfacing with CMOS and TTL logic families without additional components, reducing bill-of-materials cost and PCB footprint.
How does the shutdown feature of MAX998EUT behave electrically?
When SHDN is driven low, MAX998EUT enters shutdown mode: supply current drops to 1nA (typical), the internal comparator is disabled, and the OUT pin transitions to a high-impedance state. Wake-up time (tEN) is 15µs typical at VCC = 5V. SHDN must never be left floating - its high-impedance input could cause indeterminate operation. The pin accepts logic levels up to 6V independent of VCC.
Can MAX998EUT accept input voltages below ground?
Yes, MAX998EUT supports input voltages down to –0.2V relative to GND. Its common-mode voltage range is specified as –0.2V to (VCC – 1.2V), enabling true ground-sensing operation. This allows direct connection to current-output transducers (e.g., photodiodes, shunt amplifiers) without level-shifting circuitry - a key differentiator versus comparators with rail-to-rail input but no sub-ground capability.
What is the input offset voltage specification for MAX998EUT?
The MAX998EUT has a maximum input offset voltage (VOS) of ±3mV over the full –40°C to +85°C temperature range, with ±2mV typical at +25°C. VOS is defined as the mean of rising and falling trip points (VTRIP+ and VTRIP–). This tight offset ensures accurate threshold detection in precision monitoring applications such as battery end-of-charge signaling or sensor zero-crossing detection.
MAX998EUT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SOT-23-6
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 5.5V
- :
- 2mV @ 5.5V
- Voltage - Input Offset (Max):
- 0.3µA @ 5.5V
- Current - Input Bias (Max):
- 90mA
- Current - Output (Typ):
- 650µA
- Current - Quiescent (Max):
- 95dB CMRR, 100dB PSRR
- CMRR, PSRR (Typ):
- 40ns
- Propagation Delay (Max):
- 5mV
- Hysteresis:
- -40°C ~ 85°C (TA)
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-6
MAX998EUT FAQ
1.How can I place an order for MAX998EUT through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX998EUT 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 MAX998EUT reliable?
The price and inventory of MAX998EUT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX998EUT is usually 5 days.
3.What payment methods are accepted for MAX998EUT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX998EUT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX998EUT?
MAX998EUT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX998EUT 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 MAX998EUT?
For technical support, including MAX998EUT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX998EUT requirements.
6.How does Aetrix verify that MAX998EUT is sourced from the original manufacturer or authorized distributors?
All MAX998EUT 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 MAX998EUT meets industry standards.
7.What is the process for return or replacement of MAX998EUT?
All MAX998EUT units undergo pre-shipment inspection (PSI). If there is an issue with MAX998EUT, 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 MAX998EUT part is unused and in its original packaging.
Return procedure for MAX998EUT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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