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Analog Devices Inc./Maxim Integrated MAX998ESA+
- Part No.:
- MAX998ESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX998ESA+.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,084
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Product details
Overview
MAX998ESA+ 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. It is used in IR receivers and battery-powered threshold detection circuits.
For engineers reviewing the MAX998ESA+ datasheet, MAX998ESA+ pinout, MAX998ESA+ application, or MAX998ESA+ equivalent, key selection criteria include shutdown functionality, input common-mode range extending 200mV below ground, rail-to-rail output drive without pull-ups, and SOT23-6 compatibility for space-constrained designs.
Technical Context
The MAX998ESA+ employs a CMOS input stage with a guaranteed common-mode voltage range of –0.2V to (VCC – 1.2V), enabling true ground-sensing operation. Its internal hysteresis (0.5–4.0mV input-referred) prevents oscillation on slow-moving signals, and its push-pull output drives CMOS/TTL logic directly without external components.
Shutdown is controlled via the SHDN pin, which places the output in high-impedance state and reduces ICC to 1nA (typ). The SHDN logic thresholds scale with VCC (VIH = 0.65×VCC, VIL = 0.2×VCC), allowing 5V logic control while VCC operates at 3V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 20ns typical - enables fast response in timing-critical detection circuits like IR receivers. |
| 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. |
| Hysteresis | 0.5–4.0mV input-referred - ensures noise-immune switching without external feedback components. |
| Supply Voltage Range | +2.7V to +5.5V - compatible with both 3V and 5V systems, including Li-ion and USB-powered designs. |
Pinout & Package
MAX998ESA+ is housed in an 8-pin SO package (not SOT23-6); the "EUT+T" variant is the 6-pin SOT23 version. The ESA+ suffix denotes lead-free, RoHS-compliant 8-pin SO (package code S8+2, outline 21-0041).
| Pin | 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, enabling ground-referenced threshold detection. |
| 3 | IN+ | Noninverting input - same common-mode range as IN−; differential input voltage determines output state. |
| 4 | N.C. | No internal connection - must be left unconnected or tied to GND per layout guidelines. |
| 5 | SHDN | Active-low shutdown control - drive low to enter 1nA standby; VIH/VIL scale with VCC. |
| 6 | OUT | Push-pull output - sinks/sours 2mA, swings rail-to-rail, no external pull-up required. |
| 7 | VCC | Positive supply input - accepts +2.7V to +5.5V; decoupling capacitor required adjacent to pin. |
| 8 | N.C. | No internal connection - must be left unconnected or tied to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | Operates from +2.7V to +5.5V - eliminates need for dual supplies in portable and industrial sensors. |
| Ground-sensing inputs | Common-mode range extends 200mV below GND - enables direct interface with transducers and photodiodes referenced to ground. |
| Rail-to-rail output | Push-pull structure drives full VCC–GND swing - simplifies level translation and reduces BOM count. |
| Internal hysteresis | 0.5–4.0mV input-referred - suppresses chatter on noisy or slowly varying inputs without external components. |
| Low-power shutdown | 1nA ICC in shutdown with high-Z output - preserves system-level power budget during idle periods. |
Applications
| IR Receivers | Battery-Powered Threshold Detectors |
|---|---|
|
Use Scenario: Infrared signal demodulation using a photodiode and load resistor, where ambient light and signal noise require clean, fast edge detection. IC Role / Device Role / Timing Role: Comparator acting as high-speed analog front-end, converting photodiode current into digital logic-level pulses. Use Value: 20ns propagation delay ensures accurate pulse timing for 38kHz IR protocols; rail-to-rail output directly drives microcontroller GPIOs. |
Use Scenario: Monitoring battery voltage against low-charge or over-voltage thresholds in handheld instruments or wearables. IC Role / Device Role / Timing Role: Precision threshold detector with programmable hysteresis, operating from the same battery supply it monitors. Use Value: Ground-sensing inputs allow direct measurement of battery cathode voltage; 225µA quiescent current minimizes drain during monitoring intervals. |
| Digital Line Receivers | 3V Logic Interface Circuits |
|
Use Scenario: Receiving degraded or unterminated digital signals (e.g., RS-232, LVDS stubs) where signal integrity is compromised by reflections or noise. IC Role / Device Role / Timing Role: High-speed line receiver providing clean, jitter-minimized logic transitions for clock/data recovery. Use Value: Internal hysteresis rejects sub-mV noise; 20ns delay enables reliable sampling of >25MHz data rates in compact PCB layouts. |
Use Scenario: Level-shifting between mixed-voltage subsystems (e.g., 3.3V MCU interfacing with 5V peripherals or sensors). IC Role / Device Role / Timing Role: Single-supply comparator configured as a precision voltage translator with defined trip points. Use Value: Rail-to-rail output guarantees full logic swing at target VCC; input common-mode range accommodates 0V–3.3V inputs even when VCC = 5V. |
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/NOPB | No shutdown function; 45ns propagation delay; 120µA supply current; open-drain output requiring pull-up. | Lacks high-Z shutdown and rail-to-rail drive - unsuitable for low-power sleep modes or direct TTL/CMOS interfacing. | Choose only if shutdown and push-pull output are unnecessary and higher propagation delay is acceptable. |
| TLV3501CDR | 2.5ns propagation delay; 4.5mA supply current; no shutdown; rail-to-rail input but not output (open-drain); wider supply range (2.7–5.5V). | Higher speed trades off 20× higher supply current - impractical for battery operation; requires external pull-up. | Select only for ultra-high-speed applications where power budget permits >4mA per channel and external biasing is acceptable. |
Compared with LMV7215M5X/NOPB and TLV3501CDR, the MAX998ESA+ uniquely combines 20ns speed, 225µA active current, 1nA shutdown, rail-to-rail push-pull output, and ground-sensing inputs - making it optimal for space- and power-constrained 3V/5V detection systems requiring robust, self-contained operation.
Availability
MAX998ESA+ is available at Aetrix Electronics and suitable for IR receivers, battery-powered threshold detectors, and 3V logic interface circuits requiring stable component supply across production lifecycles.
Supply support for MAX998ESA+ 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 power management ICs for industrial, automotive, and communications applications.
The MAX998ESA+ belongs to Maxim's high-speed comparator product line, designed specifically for low-power, single-supply detection in portable and space-constrained systems where speed, accuracy, and shutdown capability are critical.
FAQ
What is the maximum common-mode input voltage range for MAX998ESA+?
The MAX998ESA+ supports a common-mode input voltage range from –0.2V to (VCC – 1.2V). This means it can accurately sense signals 200mV below ground and up to 1.2V below the positive supply - a key enabler for ground-referenced sensor interfaces and battery monitoring circuits. This specification is guaranteed over the full –40°C to +85°C temperature range.
Does MAX998ESA+ require external pull-up resistors on its output?
No, MAX998ESA+ does not require external pull-up resistors. Its output is a rail-to-rail push-pull stage capable of sourcing and sinking 2mA, delivering full logic-level swings from GND to VCC. This eliminates external components and simplifies design in CMOS/TTL interface applications - a confirmed feature verified in the Electrical Characteristics table and Typical Operating Circuit diagrams.
What is the typical wake-up time from shutdown for MAX998ESA+?
The typical wake-up time (tEN) from shutdown for MAX998ESA+ is 15µs when VCC = 5V and ICC reaches 90% of its typical active value. This parameter is explicitly specified in the Electrical Characteristics table under "Wake-Up from Shutdown." It ensures rapid reactivation for duty-cycled detection systems without compromising low-power savings.
Can MAX998ESA+ operate from a 3.3V supply?
Yes, MAX998ESA+ is fully specified for operation from +2.7V to +5.5V, including 3.3V nominal supplies. All key parameters - propagation delay (20ns), supply current (225µA), and input offset voltage (±2mV typ) - are guaranteed across this range. Its rail-to-rail output and ground-sensing inputs make it especially well-suited for 3.3V embedded systems.
Is the shutdown pin (SHDN) of MAX998ESA+ compatible with 5V logic while VCC is at 3V?
Yes, the SHDN pin of MAX998ESA+ accepts input voltages up to 6V independent of VCC, and its logic thresholds scale with VCC (VIH = 0.65×VCC, VIL = 0.2×VCC). So with VCC = 3V, VIH ≈ 1.95V - easily met by standard 5V TTL outputs. This allows mixed-voltage control without level shifters, as confirmed in the Absolute Maximum Ratings and Electrical Characteristics sections.
MAX998ESA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- 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+ FAQ
1.How can I place an order for MAX998ESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX998ESA+ 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+ reliable?
The price and inventory of MAX998ESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX998ESA+ is usually 5 days.
3.What payment methods are accepted for MAX998ESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX998ESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX998ESA+?
MAX998ESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX998ESA+ 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+?
For technical support, including MAX998ESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX998ESA+ requirements.
6.How does Aetrix verify that MAX998ESA+ is sourced from the original manufacturer or authorized distributors?
All MAX998ESA+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX998ESA+?
All MAX998ESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX998ESA+, 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+ part is unused and in its original packaging.
Return procedure for MAX998ESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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