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Analog Devices Inc./Maxim Integrated MAX998ESA+T
- Part No.:
- MAX998ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX998ESA+T.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,851
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Product details
Overview
MAX998ESA+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 rail-to-rail output swing without external pull-ups - enabling direct interface with CMOS/TTL logic in battery-powered threshold detection circuits.
For engineers reviewing the MAX998ESA+T datasheet, MAX998ESA+T pinout, MAX998ESA+T application, or MAX998ESA+T equivalent, key selection criteria include shutdown current (1nA), ground-sensing input range (–0.2V to VCC–1.2V), input offset voltage (±2mV), internal hysteresis (0.5–4.0mV), and SOT23-6 package compatibility with layout-sensitive IR receiver and digital line receiver designs.
Technical Context
The MAX998ESA+T employs a CMOS input stage with –0.2V to (VCC–1.2V) common-mode range, supporting ground-referenced sensing while tolerating continuous short-circuit faults to either rail. Its push-pull output drives rail-to-rail under 2mA sink/source loads without external components.
Internal hysteresis (0.5–4.0mV input-referred) ensures clean switching with slow-moving inputs, and the SHDN pin enables deterministic low-power mode: driving SHDN low reduces ICC to 1nA and places OUT in high-impedance state, with 5µs shutdown delay and 15µs wake-up time at VCC = 5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 20ns typical at 50mV overdrive - enables fast edge detection in digital receivers and timing-critical discriminators. |
| Supply Current | 225µA per comparator at +25°C - supports multi-year battery life in always-on sensor monitoring. |
| Shutdown Current | 1nA typical - allows ultra-low quiescent power during system sleep without external power gating. |
| Input Offset Voltage | ±2mV max over temperature - ensures accurate trip-point stability in precision threshold detectors. |
| Common-Mode Range | –0.2V to (VCC–1.2V) - permits direct connection to ground-referenced sensors and transducers. |
| Rail-to-Rail Output | VOH ≥ VCC–0.1V, VOL ≤ 0.4V at 2mA - eliminates need for pull-up resistors when interfacing with 3.3V/5V logic families. |
| Input Hysteresis | 0.5–4.0mV input-referred - suppresses noise-induced oscillation without requiring external feedback networks. |
Pinout & Package
MAX998ESA+T is housed in a RoHS-compliant 6-pin SOT23 package (outline 21-0058), optimized for high-density PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND | Ground reference | Primary return path for supply and signal currents; must connect to low-impedance ground plane. |
| 2 - IN− | Inverting input | Differential input node accepting signals within –0.2V to (VCC–1.2V); tolerant of continuous rail shorts. |
| 3 - IN+ | Noninverting input | Differential input node with identical common-mode range and fault tolerance as IN−. |
| 4 - OUT | Comparator output | Push-pull rail-to-rail output; enters high-Z state during shutdown - supports wired-OR configurations. |
| 5 - VCC | Positive supply | +2.7V to +5.5V single supply; requires local 0.1µF ceramic decoupling placed adjacent to this pin. |
| 6 - SHDN | Shutdown control | Active-low enable; driven low to enter 1nA shutdown; logic thresholds scale with VCC (VIH = 0.65×VCC, VIL = 0.2×VCC). |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | Functional down to +2.7V - eliminates need for dual supplies in portable 3V systems. |
| Ground-sensing inputs | Common-mode range extends 200mV below GND - enables direct interface with current-output sensors and photodiodes. |
| Rail-to-rail output drive | No external pull-up required - reduces BOM count and board area in CMOS/TTL interfacing. |
| Internal hysteresis | Eliminates external positive-feedback resistors in noise-prone environments like IR receivers. |
| Low-power shutdown | 1nA ICC and high-Z output - preserves system-level power budget without compromising signal integrity during sleep. |
Applications
| IR Receiver | 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 high-speed analog front-end, converting photodiode current into clean digital logic levels. Use Value: 20ns propagation delay ensures accurate pulse timing capture; rail-to-rail output directly drives microcontroller GPIOs without level-shifting. |
Use Scenario: Recovering digital data from noisy, attenuated transmission lines in industrial communication interfaces. IC Role / Device Role / Timing Role: Threshold discriminator restoring logic states from degraded waveforms with minimal jitter. Use Value: Internal hysteresis prevents chatter on slow edges; ground-sensing inputs accommodate DC-biased line voltages. |
| Battery-Powered Threshold Detector | 3V System Voltage Monitor |
|
Use Scenario: Monitoring battery voltage to trigger low-battery alerts or system shutdown before critical depletion. IC Role / Device Role / Timing Role: Precision comparator comparing battery voltage against a stable reference (e.g., MAX6120). Use Value: ±2mV offset voltage ensures consistent trip points across temperature; 225µA ICC extends operational lifetime in always-on monitoring. |
Use Scenario: Validating regulated 3.3V or 3.0V supply rails in embedded controllers and IoT endpoints. IC Role / Device Role / Timing Role: Undervoltage/overvoltage detector implementing window-comparator functionality with discrete resistors. Use Value: –0.2V to VCC–1.2V input range accepts direct connection to supply nodes; shutdown mode disables monitoring during deep sleep. |
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, 120µA supply current, no shutdown pin, SC70-5 package | Lacks SHDN functionality and ground-sensing capability; common-mode range limited to 0.2V above GND | Choose when ultra-low ICC is secondary to cost and shutdown is managed externally. |
| TLV3501DBVR | 4.5ns propagation delay, 5.3mA supply current, no shutdown, SOT23-6 package | Higher speed but 23× higher ICC; no ground-sensing; requires external pull-up for open-drain output | Choose only when sub-5ns response is mandatory and power budget allows >5mA per channel. |
Compared with LMV7215M5X and TLV3501DBVR, the MAX998ESA+T uniquely balances nanosecond-speed response (20ns), ultra-low active/shutdown current (225µA/1nA), ground-sensing inputs, and integrated rail-to-rail output - making it optimal for battery-constrained, space-limited, and noise-sensitive threshold detection where both precision and power efficiency are non-negotiable.
Availability
MAX998ESA+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 and consumer production cycles.
Supply support for MAX998ESA+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 industrial, automotive, and communications systems.
The MAX998ESA+T belongs to the MAX976/MAX978/MAX998 family of high-speed comparators engineered specifically for single-supply, low-power, space-constrained applications such as portable instrumentation and energy-harvesting sensor nodes.
FAQ
What is the maximum operating supply voltage for MAX998ESA+T?
The MAX998ESA+T supports a supply voltage range of +2.7V to +5.5V, with an absolute maximum rating of +6V on the VCC pin. Operation beyond +5.5V is not guaranteed and may impact long-term reliability or parametric performance. The MAX998ESA+T maintains full specification compliance across this entire 2.7V–5.5V range, including propagation delay, offset voltage, and hysteresis behavior.
Does MAX998ESA+T require external pull-up resistors on its output?
No, the MAX998ESA+T features a push-pull output stage capable of rail-to-rail swing without external pull-up circuitry. At VCC = 5.5V, VOH is guaranteed ≥ VCC–0.1V and VOL ≤ 0.4V with 2mA load, enabling direct interfacing with standard CMOS and TTL logic families. This eliminates BOM items and layout complexity associated with open-drain comparators.
How does the shutdown function behave on MAX998ESA+T?
Driving the SHDN pin low places the MAX998ESA+T in shutdown mode, reducing supply current to 1nA typical and forcing the output into a high-impedance state. Wake-up time is 15µs (typical) at VCC = 5V. SHDN logic thresholds scale with VCC (VIH = 0.65×VCC, VIL = 0.2×VCC), allowing reliable control even when VCC operates at 2.7V while driven by 5V logic.
Can MAX998ESA+T accept input voltages below ground?
Yes, the MAX998ESA+T inputs support a common-mode voltage range extending 200mV below ground (–0.2V minimum), enabling direct connection to ground-referenced current sources like photodiodes or shunt-based current sensors. Both inputs tolerate continuous short-circuit faults to either rail, enhancing robustness in real-world signal conditioning applications.
What is the input offset voltage specification for MAX998ESA+T over temperature?
The MAX998ESA+T guarantees input offset voltage of ±2mV maximum over the full –40°C to +85°C operating temperature range. At +25°C, typical VOS is ±0.2mV. This tight offset ensures stable, repeatable trip-point accuracy in precision threshold detection circuits without requiring calibration or trimming.
MAX998ESA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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 @ 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):
- 4mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
MAX998ESA+T FAQ
1.How can I place an order for MAX998ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX998ESA+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 MAX998ESA+T reliable?
The price and inventory of MAX998ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX998ESA+T is usually 5 days.
3.What payment methods are accepted for MAX998ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX998ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX998ESA+T?
MAX998ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX998ESA+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 MAX998ESA+T?
For technical support, including MAX998ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX998ESA+T requirements.
6.How does Aetrix verify that MAX998ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX998ESA+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 MAX998ESA+T meets industry standards.
7.What is the process for return or replacement of MAX998ESA+T?
All MAX998ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX998ESA+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 MAX998ESA+T part is unused and in its original packaging.
Return procedure for MAX998ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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