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Analog Devices Inc./Maxim Integrated MAX993ESD+T
- Part No.:
- MAX993ESD+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX993ESD+T.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,505
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Product details
Overview
MAX993ESD+T from Maxim Integrated is a quad micropower rail-to-rail input/output comparator with push-pull output stage, operating from 2.5V to 5.5V single supply (or ±1.25V to ±2.75V dual supply), consuming only 11µA per comparator, achieving 300ns propagation delay at 100mV overdrive, and supporting 8mA output drive capability. It is used in battery-powered threshold detection and zero-crossing circuits where low quiescent current and rail-to-rail swing are critical.
For engineers reviewing the MAX993ESD+T datasheet, MAX993ESD+T pinout, MAX993ESD+T application, or MAX993ESD+T equivalent, key selection criteria include guaranteed 300ns propagation delay at 2.7V–5.5V supply, ±0.5mV typical input offset voltage, 0.25V beyond-rail common-mode range, and SO-14 package compatibility for industrial signal conditioning designs.
Technical Context
The MAX993ESD+T implements four independent comparators sharing a common VCC and VEE supply pair, each featuring internal 3mV hysteresis to prevent chatter on slow-moving inputs. Its input stage accepts voltages from –0.25V to VCC + 0.25V, enabling direct sensing of signals near or slightly beyond supply rails without phase reversal.
The push-pull output stage delivers rail-to-rail swing under 8mA load, with VOH = 4.45V (min) at VCC = 5V/ISOURCE = 8mA and VOL = 0.4V (max) at VCC = 5V/ISINK = 8mA. Supply-current surges during switching are minimized-ICC increases only to 80µA at 1MHz output transition frequency-reducing need for local bypass capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5V to 5.5V single supply; enables operation in both 3V and 5V systems without level-shifting. |
| Quiescent Current | 11µA per comparator; supports multi-year battery life in portable sensor nodes and wearables. |
| Propagation Delay | 300ns (typ) at 100mV overdrive; sufficient for fast edge detection in motor control feedback and digital line receivers. |
| Input Offset Voltage | ±0.5mV (typ); ensures accurate threshold discrimination in precision window comparators and supply monitors. |
| Common-Mode Range | Extends 0.25V beyond rails; allows direct connection to transducer outputs that swing below ground or above VCC. |
| Output Drive | Sinks and sources up to 8mA; drives LEDs, logic inputs, or small MOSFET gates directly without external buffers. |
| Input Bias Current | 1.0pA (typ); minimizes loading error in high-impedance sensor interfaces like photodiode amplifiers. |
Pinout & Package
The MAX993ESD+T is housed in a 14-pin SO (Small Outline) package with standard 150-mil width and 0.050" lead pitch. Pin assignments are fully defined in Maxim's datasheet Rev 6 (8/2012).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTD | Comparator D output - push-pull, rail-to-rail, capable of sourcing/sinking 8mA. |
| 2 | IND− | Comparator D inverting input - accepts common-mode voltages down to −0.25V. |
| 3 | IND+ | Comparator D noninverting input - supports input signals up to VCC + 0.25V. |
| 4 | VEE | Negative supply terminal - tied to ground in single-supply configurations. |
| 5 | VCC | Positive supply terminal - powers all four comparators and output stages. |
| 6 | INA+ | Comparator A noninverting input - electrically identical to pins 3, 10, and 12. |
| 7 | INA− | Comparator A inverting input - matched to other inputs for consistent hysteresis behavior. |
| 8 | OUTA | Comparator A output - functionally identical to pins 1, 9, and 14. |
| 9 | INC+ | Comparator C noninverting input - shares same input structure and bias current as all others. |
| 10 | INC− | Comparator C inverting input - supports same common-mode range and offset specs. |
| 11 | OUTC | Comparator C output - push-pull stage with identical VOL/VOH specs as OUTA. |
| 12 | INB+ | Comparator B noninverting input - no internal connection to other channels; fully independent. |
| 13 | INB− | Comparator B inverting input - isolated input node with 1.0pA bias current and ±0.5mV offset. |
| 14 | OUTB | Comparator B output - rail-to-rail swing with 300ns delay and 11µA quiescent draw. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O operation | Enables full dynamic range utilization in low-voltage systems (2.5V–5.5V), eliminating need for external level shifters. |
| 11µA per comparator supply current | Reduces total system power by >70% versus legacy comparators, critical for coin-cell–powered IoT endpoints. |
| 300ns propagation delay at 100mV overdrive | Supports reliable timing capture in 3MHz digital signal edges without added latency compensation. |
| Internal 3mV hysteresis | Prevents multiple toggling on noisy or slowly varying inputs-no external resistor network required. |
| No phase reversal on overdriven inputs | Guarantees predictable output polarity even when inputs exceed rails by 0.25V, simplifying fault-tolerant design. |
| Push-pull output with 8mA drive | Directly interfaces with CMOS/TTL logic, LEDs, or gate drivers-no pull-up resistors or external transistors needed. |
Applications
| Threshold Detection | Zero-Crossing Detection |
|---|---|
Use Scenario: Monitoring battery voltage against 3.3V cutoff threshold in handheld medical devices. IC Role / Device Role / Timing Role: Quad comparator configured as independent voltage windows, with one channel comparing VBAT to reference. Use Value: 11µA quiescent current extends operational life between charges; rail-to-rail inputs accept degraded battery down to 2.5V. | Use Scenario: Detecting AC line zero crossings in smart energy meters for synchronized sampling. IC Role / Device Role / Timing Role: One comparator channel biased at 0V (VEE), comparing AC waveform to ground reference. Use Value: 300ns propagation delay ensures sub-microsecond timing accuracy; no phase reversal prevents false triggers during overvoltage transients. |
| Ground-Sensing Circuits | Portable Sensor Interfaces |
Use Scenario: Detecting open-circuit conditions in 4–20mA loop transmitters by monitoring return path voltage. IC Role / Device Role / Timing Role: Comparator compares sensed return voltage to 0V reference with hysteresis to reject noise. Use Value: Input common-mode range extends 0.25V below ground, allowing reliable detection of <100mV sink voltages. | Use Scenario: Converting analog outputs from MEMS accelerometers into digital event flags for wake-on-motion. IC Role / Device Role / Timing Role: Two comparator channels monitor X/Y axis outputs against programmable thresholds. Use Value: 1.0pA input bias current avoids loading high-impedance sensor outputs; 3mV hysteresis suppresses false triggers from mechanical vibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Higher 2mA supply current per comparator; open-drain outputs require external pull-ups; no rail-to-rail inputs. | Used in legacy 5V industrial controls where speed and power are secondary to cost and availability. | Select LM339DR only if board already uses open-drain logic interface and 5V-only operation is acceptable. |
| TLV3704IPW | Lower 800nA supply current but slower 5.5µs propagation delay; rail-to-rail inputs/outputs; same SO-14 package. | Preferred for ultra-low-power sensor hubs where microsecond response is sufficient and 3.3V operation dominates. | Choose TLV3704IPW when battery life outweighs timing performance, and existing layout supports SO-14 footprint. |
Compared with LM339DR and TLV3704IPW, the MAX993ESD+T uniquely balances nanosecond-speed response (300ns), micropower consumption (11µA), and true rail-to-rail I/O in a production-proven SO-14 package-making it optimal for next-generation portable instrumentation requiring both precision and longevity.
Availability
MAX993ESD+T is available at Aetrix Electronics and suitable for portable medical devices, battery-powered sensor nodes, industrial ground-sensing modules, and energy metering systems requiring stable component supply across multi-year production cycles.
Supply support for MAX993ESD+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 is a U.S.-based semiconductor company specializing in analog and mixed-signal ICs for power, sensing, and interface applications.
The MAX993ESD+T belongs to Maxim's micropower comparator family designed specifically for space-constrained, battery-operated systems demanding high accuracy, low supply current, and robust input tolerance.
FAQ
What is the maximum capacitive load the MAX993ESD+T can drive while maintaining 300ns propagation delay?
The MAX993ESD+T maintains ≤300ns propagation delay (tPD+) with CL ≤ 15pF at VCC = 5V and 100mV overdrive. At CL = 50pF, tPD+ increases to 430ns; at CL = 200pF, it reaches 510ns. For designs requiring strict 300ns timing, keep total node capacitance-including PCB trace and input capacitance of driven devices-below 15pF, or add a buffer stage.
Does the MAX993ESD+T support dual-supply operation, and what are the limits?
Yes, the MAX993ESD+T supports dual-supply operation from ±1.25V to ±2.75V (i.e., VCC − VEE ≤ 5.5V, |VCC| ≤ 2.75V, |VEE| ≤ 2.75V). Absolute maximum supply voltage is 6V. When using dual supplies, the common-mode input range remains −0.25V to VCC + 0.25V, and output swings rail-to-rail between VEE and VCC.
Can the MAX993ESD+T be used in a single-supply configuration with VEE grounded?
Yes, the MAX993ESD+T is fully specified for single-supply operation with VEE = 0V and VCC = 2.5V to 5.5V. In this mode, inputs accept voltages from −0.25V to VCC + 0.25V, and outputs swing from near 0V to near VCC. No modifications or external components are required-this is the default configuration used in most portable applications.
How does the internal hysteresis of the MAX993ESD+T affect threshold accuracy?
The MAX993ESD+T features ±3mV internal hysteresis centered on the input offset voltage (±0.5mV typ). This creates a 6mV total hysteresis band, preventing oscillation on slow or noisy inputs. For applications requiring tighter threshold control, external hysteresis can be added via positive feedback resistors-but doing so increases trip-point uncertainty due to resistor tolerances and temperature drift.
Is the MAX993ESD+T RoHS-compliant and lead-free?
Yes, the MAX993ESD+T carries the "+" suffix, indicating it is lead(Pb)-free and RoHS-compliant per EU Directive 2011/65/EU. The device uses matte tin lead finish and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) requirements for unlimited floor life at ≤30°C/60% RH.
MAX993ESD+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- CMOS, Push-Pull, Rail-to-Rail, TTL
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 5.5V, ±1.25V ~ 2.75V
- :
- 5mV @ 5.5V
- Voltage - Input Offset (Max):
- 1pA @ 5.5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 24µA
- Current - Quiescent (Max):
- 80dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 450ns
- Propagation Delay (Max):
- ±3mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
MAX993ESD+T FAQ
1.How can I place an order for MAX993ESD+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX993ESD+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 MAX993ESD+T reliable?
The price and inventory of MAX993ESD+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX993ESD+T is usually 5 days.
3.What payment methods are accepted for MAX993ESD+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX993ESD+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX993ESD+T?
MAX993ESD+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX993ESD+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 MAX993ESD+T?
For technical support, including MAX993ESD+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX993ESD+T requirements.
6.How does Aetrix verify that MAX993ESD+T is sourced from the original manufacturer or authorized distributors?
All MAX993ESD+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 MAX993ESD+T meets industry standards.
7.What is the process for return or replacement of MAX993ESD+T?
All MAX993ESD+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX993ESD+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 MAX993ESD+T part is unused and in its original packaging.
Return procedure for MAX993ESD+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX993ESD+T Tags
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LM339DR
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LM339PWR
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LM2903DT
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LM393DR
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LM239DR
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LM2903P
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NCX2200GMAZ
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