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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:1,307
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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. 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 (–0.2V to VCC–1.2V). It is used in IR receivers, battery-powered threshold detection, and 3V digital line reception.
For engineers reviewing the MAX998ESA-T datasheet, MAX998ESA-T pinout, MAX998ESA-T application, or MAX998ESA-T equivalent, key selection criteria include shutdown functionality (SHDN pin), SOT23-6 package constraints, input common-mode range extending below ground, rail-to-rail output drive without pull-ups, and guaranteed 20ns propagation delay at 50mV overdrive.
Technical Context
The MAX998ESA-T employs a CMOS input stage with –0.2V to (VCC–1.2V) common-mode range, enabling true ground-sensing operation. Its internal hysteresis (0.5–4.0mV input-referred) prevents oscillation on slow or noisy inputs, and its push-pull output drives CMOS/TTL loads directly without external pull-up resistors.
Shutdown is controlled via the SHDN pin, which places the output in high-impedance state and reduces ICC to 1nA (typ). SHDN logic thresholds scale with VCC (VIL = 0.2×VCC, VIH = 0.65×VCC), supporting mixed-voltage interfacing - e.g., 5V logic driving SHDN while VCC = 3V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 20ns typical at 50mV overdrive - enables fast edge detection in timing-critical signal conditioning. |
| Supply Current | 225µA per comparator - supports ultra-low-power operation in battery-powered systems. |
| Shutdown Current | 1nA typical - allows near-zero power consumption during system sleep modes. |
| Input Common-Mode Range | –0.2V to (VCC–1.2V) - permits direct sensing of signals referenced to ground or negative offsets. |
| Output Type | Rail-to-rail push-pull - eliminates need for external pull-up resistors when interfacing with CMOS/TTL logic. |
| Input Offset Voltage | ±2mV max (TA = –40°C to +85°C) - ensures accurate threshold detection across industrial temperature range. |
| Power-Supply Rejection | 63dB min - maintains stable trip points despite supply ripple in noisy environments. |
Pinout & Package
MAX998ESA-T is housed in a RoHS-compliant 6-pin SOT23 package (outline 21-0058), with 1.3mm × 2.2mm footprint and 0.95mm height - suitable for space-constrained portable designs.
| 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; accepts voltages down to –0.2V, enabling ground-referenced thresholding. |
| 3 - IN+ | Noninverting input | Differential input node; same common-mode range as IN–; used for reference or signal input. |
| 4 - OUT | Comparator output | Push-pull, rail-to-rail output; high-impedance in shutdown mode; drives 2mA sink/source. |
| 5 - VCC | Positive supply | Single supply input: +2.7V to +5.5V; bypass with 0.1µF ceramic capacitor placed adjacent to pin. |
| 6 - SHDN | Shutdown control | Active-low enable; drives low to enter 1nA shutdown; must not be left floating or three-stated. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | Operates from +2.7V to +5.5V - eliminates need for dual supplies in portable and 3V systems. |
| Ground-sensing inputs | Common-mode range extends 200mV below GND - enables direct interface with sensors and transducers referenced to ground. |
| Internal hysteresis | 0.5–4.0mV input-referred - suppresses chatter on slow-moving or noisy inputs without external components. |
| Rail-to-rail output | Drives from GND to VCC without pull-ups - simplifies interface with 1.8V/3.3V/5V logic families. |
| Low-power shutdown | Reduces ICC to 1nA and places OUT in high-Z - preserves system-level power budget during idle periods. |
Applications
| IR Receiver Front-End | Battery Voltage Monitor |
|---|---|
Use Scenario: Detects modulated infrared pulses from remote controls using a photodiode and load resistor. IC Role / Device Role / Timing Role: Comparator compares photodiode voltage against a DC reference to regenerate clean digital pulses. Use Value: 20ns propagation delay ensures accurate pulse timing recovery; rail-to-rail output directly drives microcontroller GPIOs. |
Use Scenario: Monitors lithium-ion cell voltage to trigger low-battery warning or system shutdown. IC Role / Device Role / Timing Role: Threshold detector comparing battery voltage against precision reference (e.g., MAX6120). Use Value: Ground-sensing inputs allow direct connection to battery cathode; 225µA quiescent current minimizes drain during monitoring. |
| Digital Line Receiver | 3V Logic-Level Translator |
Use Scenario: Receives degraded or attenuated digital signals in industrial communication lines. IC Role / Device Role / Timing Role: Signal regenerator restoring logic levels and edge integrity before MCU input. Use Value: Input hysteresis rejects noise on long traces; 20ns delay preserves data rate up to ~25Mbps. |
Use Scenario: Interfaces 5V legacy peripherals with 3.3V or 1.8V microcontrollers in mixed-voltage systems. IC Role / Device Role / Timing Role: Level-shifting comparator converting TTL/CMOS thresholds to lower-voltage logic levels. Use Value: Rail-to-rail output ensures full swing at target VCC; shutdown mode isolates unused channels to prevent leakage. |
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, 1.25mA 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 higher speed tolerance exists and shutdown is unnecessary; verify input common-mode compatibility. |
| TLV3501DBVR | 4.5ns propagation delay, 5.3mA supply current, no shutdown, SOT23-6 package, 2.7–5.5V supply. | Higher speed but 23× higher supply current; no internal hysteresis; output not rail-to-rail (requires pull-up). | Choose for nanosecond-level timing where power is secondary; add external hysteresis and pull-up if needed. |
Compared with MAX998ESA-T, LMV7215M5X trades shutdown and ground-sensing for lower cost and wider availability, while TLV3501DBVR offers superior speed at significantly higher power and reduced integration - neither provides the same combination of 20ns delay, 225µA operation, 1nA shutdown, and rail-to-rail output in SOT23-6.
Availability
MAX998ESA-T is available at Aetrix Electronics and suitable for battery-powered systems, IR receivers, and 3V digital line receivers requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
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) is a semiconductor company specializing in precision analog, mixed-signal, and high-performance power management ICs for industrial, communications, and consumer applications.
The MAX998ESA-T belongs to Maxim's high-speed comparator family designed for low-voltage, low-power signal conditioning - targeting portable instrumentation, sensor interfaces, and energy-efficient embedded control systems.
FAQ
What is the maximum operating supply voltage for MAX998ESA-T?
The MAX998ESA-T has an absolute maximum supply voltage (VCC) of +6V. However, its specified operational range is +2.7V to +5.5V. Operating beyond +5.5V may cause permanent damage or violate parametric guarantees. The MAX998ESA-T is rated for continuous operation only within this 2.7–5.5V window, with all electrical characteristics validated across that range.
Does MAX998ESA-T require external pull-up resistors on its output?
No, the MAX998ESA-T features a push-pull, rail-to-rail output stage capable of sourcing and sinking current - it does not require external pull-up resistors. This design allows direct interface with CMOS and TTL logic families. The output drives from GND to VCC under normal operation, and enters high-impedance state only when SHDN is asserted low.
Can MAX998ESA-T inputs safely operate below ground potential?
Yes, the MAX998ESA-T inputs support a common-mode voltage range extending to –0.2V relative to GND. This ground-sensing capability allows direct connection to signals referenced to ground or slightly negative offsets - such as photodiode outputs or sensor bridges - without level-shifting circuitry. Operation below –0.2V violates Absolute Maximum Ratings and may damage the device.
How fast does MAX998ESA-T wake up from shutdown mode?
The MAX998ESA-T requires a typical wake-up time (tEN) of 15µs after SHDN is driven high, with VCC = 5V and supply current reaching 90% of typical value. During this interval, the output remains invalid. This parameter is guaranteed by design and applies across the full –40°C to +85°C temperature range, making the MAX998ESA-T suitable for rapid duty-cycled sensing applications.
Is the shutdown function of MAX998ESA-T compatible with 5V logic while VCC = 3V?
Yes, the SHDN pin of MAX998ESA-T accepts input voltages up to +6V independent of VCC. Its logic thresholds scale with VCC (VIL ≤ 0.2×VCC, VIH ≥ 0.65×VCC), so a 5V logic HIGH cleanly activates the pin even when VCC = 3V. This enables robust mixed-voltage system control without level shifters - a key feature confirmed in the MAX998ESA-T Electrical Characteristics table.
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:
- 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):
- 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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