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Analog Devices Inc./Maxim Integrated MAX998EUT-T
- Part No.:
- MAX998EUT-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SOT-23-6
- Datasheet:
-
MAX998EUT-T.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT6
- Quantity:
- Payment:
- Shipping:
Inventory:2,817
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Product details
Overview
MAX998EUT-T 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 push-pull output and ground-sensing inputs - enabling direct CMOS/TTL interfacing in battery-powered threshold detection circuits.
For engineers reviewing the MAX998EUT-T datasheet, MAX998EUT-T pinout, MAX998EUT-T application, or MAX998EUT-T equivalent, key selection criteria include its SOT23-6 package footprint, SHDN-controlled high-impedance output state, -0.2V to (VCC–1.2V) common-mode input range, and internal hysteresis for noise-immune switching in IR receivers and digital line receivers.
Technical Context
The MAX998EUT-T employs a CMOS input stage with a common-mode voltage range extending 200mV below ground and up to 1.2V below VCC, supporting true ground-referenced sensing. Its push-pull output drives rail-to-rail without external pull-ups and tolerates continuous short-circuit faults to either rail.
Shutdown is controlled via the SHDN pin, which must be driven low (≤0.2×VCC) to activate 1nA quiescent mode and place OUT in high-impedance state; logic thresholds scale with VCC, allowing 5V logic control of a 3V-powered device. Internal hysteresis (0.5–4.0mV input-referred) prevents oscillation during slow input transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation delay | 20ns typical at 50mV overdrive - enables fast response in timing-critical edge detection. |
| Supply current (active) | 225µA per comparator - supports multi-year battery life in always-on sensor nodes. |
| Supply current (shutdown) | 1nA typical - reduces system standby power to negligible levels. |
| Common-mode input range | -0.2V to (VCC – 1.2V) - allows direct interface with 0V-referenced sensors and ADCs. |
| Rail-to-rail output | Push-pull structure sinks/sours 2mA - eliminates need for external pull-up resistors when driving CMOS/TTL. |
| Input offset voltage | ±2mV max (T = +25°C), ±3mV max (–40°C to +85°C) - ensures accurate trip-point stability across temperature. |
| Input-referred hysteresis | 0.5–4.0mV - suppresses chatter on noisy or slowly varying signals without external components. |
| Power supply rejection | 63dB min - maintains stable switching thresholds despite supply ripple in noisy environments. |
Pinout & Package
The MAX998EUT-T is housed in a 6-pin SOT23 package (outline 21-0058, land pattern 90-0175), RoHS-compliant, with top mark "AAAO".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for all internal circuitry and output stage. |
| 2 | IN− | Inverting input - accepts signals down to –0.2V for ground-sensing applications. |
| 3 | IN+ | Noninverting input - same common-mode range as IN−; differential pair input node. |
| 4 | OUT | Push-pull output - actively drives high/low; enters high-Z state during shutdown. |
| 5 | VCC | Positive supply input - operates from 2.7V to 5.5V; powers internal bias and output stage. |
| 6 | SHDN | Active-low shutdown control - logic low (≤0.2×VCC) disables comparator and reduces ICC to 1nA. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | 2.7V minimum supply enables direct use with Li-ion, Li-Po, and 3.3V logic rails. |
| 20ns propagation delay | Supports >20MHz signal edge detection in digital receivers and pulse-width discriminators. |
| 1nA shutdown current | Reduces system-level standby power by >99.9% versus active mode - critical for IoT endpoint sleep cycles. |
| Rail-to-rail output drive | Eliminates external pull-up resistors and associated board area, BOM cost, and rise-time degradation. |
| Internal hysteresis | Provides built-in noise immunity without external feedback resistors - simplifies PCB layout and validation. |
| Ground-sensing inputs | Accepts input voltages 200mV below GND - enables direct connection to current-sense shunts and photodiode transimpedance amps. |
Applications
| IR Receivers | Digital Line Receivers |
|---|---|
Use Scenario: Detecting modulated infrared pulses from remote controls or proximity sensors using a photodiode and load resistor. IC Role / Device Role / Timing Role: Threshold comparator converting analog photodiode current into clean digital logic edges. Use Value: 20ns delay ensures accurate decoding of 38kHz carrier bursts; rail-to-rail output directly interfaces with microcontroller GPIOs. | Use Scenario: Recovering digital data from noisy, unterminated transmission lines in industrial fieldbus or legacy serial links. IC Role / Device Role / Timing Role: High-speed line receiver rejecting common-mode noise while preserving signal integrity. Use Value: –0.2V to (VCC–1.2V) input range accommodates negative signal excursions; internal hysteresis rejects EMI-induced glitches. |
| Battery-Powered Threshold Detectors | 3V System Voltage Monitors |
Use Scenario: Monitoring battery voltage or sensor output against fixed or adjustable thresholds in portable medical or wearables devices. IC Role / Device Role / Timing Role: Low-power comparator generating wake-up interrupts or status flags upon crossing defined thresholds. Use Value: 225µA active current and 1nA shutdown enable multi-year operation on coin cells; SHDN pin allows microcontroller-controlled power gating. | Use Scenario: Validating stable 3.3V or 3.0V supply rails before enabling processor reset or peripheral initialization. IC Role / Device Role / Timing Role: Precision undervoltage lockout (UVLO) detector with tight trip-point tolerance. Use Value: ±2mV input offset and 63dB PSRR ensure reliable trip-point accuracy despite supply ripple and temperature drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-power comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV7215M5X | 25ns propagation delay, 550µA supply current, no shutdown pin, SC70-5 package | Lacks SHDN control and ground-sensing capability; requires external pull-up for open-drain output | Choose when shutdown functionality is unnecessary and higher supply current is acceptable. |
| TLV3501DBVR | 4.5ns propagation delay, 5.3mA supply current, no shutdown, SOT23-6 package | Higher speed but 23× higher active current; no ground-sensing input range (0V to VCC–1.5V) | Choose only when sub-5ns response is mandatory and power budget permits. |
Compared with LMV7215M5X and TLV3501DBVR, the MAX998EUT-T uniquely balances nanosecond-speed response (20ns), ultra-low shutdown current (1nA), ground-sensing inputs, and rail-to-rail output in a 6-pin SOT23 - making it optimal for battery-constrained, noise-prone, and space-limited threshold detection.
Availability
MAX998EUT-T is available at Aetrix Electronics and suitable for battery-powered systems, IR receivers, digital line receivers, and 3V system voltage monitors requiring stable component supply across industrial, medical, and consumer electronics programs.
Supply support for MAX998EUT-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, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX976/MAX978/MAX998 family was engineered specifically for high-speed, low-power, single-supply comparator applications in portable and space-constrained systems - emphasizing ground-sensing capability, rail-to-rail output, and integrated hysteresis.
FAQ
What is the maximum operating supply voltage for the MAX998EUT-T?
The MAX998EUT-T supports a supply voltage range of +2.7V to +5.5V, with an absolute maximum rating of +6V on the VCC pin. Operation above +5.5V is not guaranteed and may cause permanent damage. The device is fully specified across this range, including propagation delay, offset voltage, and hysteresis performance, making MAX998EUT-T suitable for both 3V and 5V system rails.
Does the MAX998EUT-T require external pull-up resistors on its output?
No, the MAX998EUT-T features a push-pull (active-drive) output stage capable of rail-to-rail operation, eliminating the need for external pull-up resistors. This design directly drives CMOS and TTL logic inputs without added components, reducing board area, BOM cost, and potential rise-time limitations - a key advantage of MAX998EUT-T over open-drain comparators.
How does the SHDN pin function on the MAX998EUT-T?
The SHDN pin on MAX998EUT-T is an active-low control that places the comparator in ultra-low-power shutdown mode when driven ≤0.2×VCC. In shutdown, the output enters high-impedance state and supply current drops to 1nA typical. SHDN logic thresholds scale with VCC, enabling 5V logic to control a 3V-powered MAX998EUT-T - a feature explicitly confirmed in the Electrical Characteristics table.
Can the MAX998EUT-T accept input voltages below ground?
Yes, the MAX998EUT-T inputs support a common-mode voltage range extending to –0.2V, enabling true ground-sensing operation. This allows direct interface with current-sense amplifiers, photodiode transimpedance stages, or other circuits where the signal reference falls slightly below GND - a verified specification listed under VCMR in the Electrical Characteristics table for MAX998EUT-T.
What is the typical propagation delay of the MAX998EUT-T and under what conditions is it measured?
The MAX998EUT-T has a typical propagation delay of 20ns, measured at VCC = +5V, with 50mV input overdrive and CLOAD = 10pF (per Electrical Characteristics table). This value is guaranteed by design across the full temperature range (–40°C to +85°C), and typical performance remains stable across supply voltages from 2.7V to 5.5V - confirming MAX998EUT-T's suitability for high-speed timing-critical applications.
MAX998EUT-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SOT-23-6
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 5.5V
- :
- 2mV @ 5V
- Voltage - Input Offset (Max):
- 0.075µA @ 5.5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 650µA
- Current - Quiescent (Max):
- 95dB CMRR, 100dB PSRR
- CMRR, PSRR (Typ):
- 28ns
- Propagation Delay (Max):
- 5mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-6
MAX998EUT-T FAQ
1.How can I place an order for MAX998EUT-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX998EUT-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 MAX998EUT-T reliable?
The price and inventory of MAX998EUT-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX998EUT-T is usually 5 days.
3.What payment methods are accepted for MAX998EUT-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX998EUT-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX998EUT-T?
MAX998EUT-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX998EUT-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 MAX998EUT-T?
For technical support, including MAX998EUT-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX998EUT-T requirements.
6.How does Aetrix verify that MAX998EUT-T is sourced from the original manufacturer or authorized distributors?
All MAX998EUT-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 MAX998EUT-T meets industry standards.
7.What is the process for return or replacement of MAX998EUT-T?
All MAX998EUT-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX998EUT-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 MAX998EUT-T part is unused and in its original packaging.
Return procedure for MAX998EUT-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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