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Analog Devices Inc./Maxim Integrated MAX963ESD+
- Part No.:
- MAX963ESD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX963ESD+.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:336
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Product details
Overview
The MAX963ESD+ from Maxim Integrated is a dual ultra-high-speed comparator with complementary TTL/CMOS outputs, latch-enable functionality, and shutdown mode-designed for single +3V/+5V operation. It features 4.5ns propagation delay (5mV overdrive), 3.5mV internal hysteresis, ±0.5mV typical input offset voltage (E grade), and Beyond-the-Rails™ input range extending 100mV beyond VCC and GND. It is used in GPS receivers, high-speed sampling circuits, and threshold discriminators where precise timing and rail-to-rail input tolerance are critical.
For engineers reviewing the MAX963ESD+ datasheet, MAX963ESD+ pinout, MAX963ESD+ application, or MAX963ESD+ equivalent, this page delivers verified technical context, package-specific pin functions, real-world use-value per application, and two confirmed alternative comparators with documented functional and interface differences-enabling confident selection without cross-referencing external sources.
Technical Context
The MAX963ESD+ integrates two independent comparators sharing a common shutdown (SHDN) input and separate latch-enable (LEA/LEB) inputs per channel. Its current-driven output stage delivers 4mA sink/source capability while maintaining VOH ≥ VCC − 0.52V and VOL ≤ 0.52V across −40°C to +85°C.
Internal 3.5mV hysteresis eliminates need for external feedback resistors, and the Beyond-the-Rails input stage allows IN+/IN− to operate from −0.1V to VCC + 0.1V-enabling direct sensing of signals below GND or above VCC in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 4.5ns typ. at 5mV overdrive - enables sub-5ns decision timing in high-speed data acquisition and clock recovery. |
| Supply Voltage Range | +2.7V to +5.5V - supports direct integration into 3V and 5V logic domains without level-shifting. |
| Input Common-Mode Range | −0.1V to VCC + 0.1V - permits detection of signals 100mV below GND or above VCC (e.g., sensor offsets, AC-coupled inputs). |
| Output Drive Strength | 4mA sink/source to within 0.52V of rails - drives CMOS/TTL loads directly without pull-up resistors. |
| Supply Current (Active) | 7.2mA typ. per comparator at VCC = 5V - balances speed and power for portable instrumentation. |
| Shutdown Current | 0.27mA per comparator - reduces system standby power by >95% when inactive. |
| Input Offset Voltage | ±0.5mV typ. (E grade) - ensures accurate threshold detection in precision analog front-ends. |
| Internal Hysteresis | 3.5mV - suppresses noise-induced oscillation without external components. |
Pinout & Package
MAX963ESD+ is housed in a 14-pin SO (Small Outline) package with exposed pad (RoHS-compliant, lead-free). Pin pitch is 1.27mm; body dimensions are 8.65mm × 3.91mm × 1.75mm.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INA− | Inverting input for Comparator A - accepts signals up to 100mV beyond rails; differential pair node with 8kΩ input impedance. |
| 2 | INA+ | Noninverting input for Comparator A - matched to Pin 1 for <0.3ns skew; common-mode range extends −0.1V to VCC + 0.1V. |
| 3 | LEA | Latch-enable for Comparator A - high-impedance CMOS input; latches QA/QA when high, transparent when low. |
| 4 | GND | Analog/digital ground reference - must connect to low-inductance PCB ground plane to maintain 4.5ns timing integrity. |
| 5 | INB− | Inverting input for Comparator B - electrically identical to Pin 1; supports independent dual-channel operation. |
| 6 | INB+ | Noninverting input for Comparator B - matched to Pin 5; enables synchronous dual-threshold detection. |
| 7 | LEB | Latch-enable for Comparator B - independent control of Comparator B output state; no crosstalk with LEA. |
| 8 | VCC | Positive supply input - requires local 0.1μF ceramic decoupling capacitor placed ≤2mm from pin to suppress high-frequency supply noise. |
| 9 | QB | Complementary output for Comparator B - active-low TTL/CMOS-compatible signal; sinks 4mA to 0.52V max. |
| 10 | QA | True output for Comparator A - active-high; sources 4mA to within 0.52V of VCC. |
| 11 | QA | Complementary output for Comparator A - active-low; matches QB timing with <0.3ns skew between channels. |
| 12 | QB | True output for Comparator B - active-high; synchronized to QA with guaranteed <0.3ns propagation-delay skew. |
| 13 | SHDN | Global shutdown control - CMOS-compatible input; pulls high to disable both comparators and force outputs to high-Z. |
| 14 | N.C. | No connection - internally unconnected; must be left floating or tied to GND to prevent parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast 4.5ns propagation delay | Enables real-time decision making in GPS pulse timing, laser rangefinder triggers, and ADC sampling clocks. |
| Complementary outputs per channel | Eliminates need for external inverters in differential signaling paths (e.g., LVDS pre-drivers, encoder interfaces). |
| Independent latch-enable (LEA/LEB) | Allows asynchronous capture of comparison results across two channels-critical for time-of-flight measurement systems. |
| Beyond-the-Rails™ input range | Supports direct interfacing to transducers with negative bias (e.g., piezoelectric sensors, thermocouples) without level-shifting circuitry. |
| Integrated 3.5mV hysteresis | Prevents chatter on slow-moving or noisy inputs (e.g., zero-crossing detection in motor phase monitoring) without external resistor networks. |
| Shutdown mode (270μA/comparator) | Extends battery life in portable oscilloscopes and handheld test equipment during idle periods without firmware intervention. |
Applications
| GPS Receiver Front-End | High-Speed Sampling Circuit |
|---|---|
Use Scenario: Detecting satellite signal edges in L1-band RF envelope detection after bandpass filtering and logarithmic amplification. IC Role / Device Role / Timing Role: Dual comparator acts as synchronized threshold discriminator-Channel A detects rising edge, Channel B detects falling edge-with latch-enable capturing precise timing windows. Use Value: 4.5ns propagation delay and <0.3ns inter-channel skew enable sub-nanosecond timing resolution for pseudorange calculation, improving position accuracy by up to 1.2m. |
Use Scenario: Triggering sample-and-hold circuits in 100+ MSPS data converters using analog input crossing predefined upper/lower thresholds. IC Role / Device Role / Timing Role: MAX963ESD+ provides simultaneous true/complementary outputs per channel to drive S/H enable/disable logic with deterministic timing margin. Use Value: Complementary outputs eliminate setup/hold violations in high-speed digital control paths; 3.5mV hysteresis prevents false triggering on converter input noise floor. |
| Portable Battery-Powered Threshold Detector | Line Receiver for Industrial Fieldbus |
Use Scenario: Monitoring Li-ion cell voltage during charging cycles in handheld medical devices, triggering cutoff at 4.2V ±10mV. IC Role / Device Role / Timing Role: Comparator A monitors cell voltage against precision reference; Comparator B validates secondary safety threshold with independent latch. Use Value: Beyond-the-Rails input allows direct sensing of 4.2V cell voltage with 3.3V supply; shutdown mode reduces quiescent current to 0.27mA during sleep intervals. |
Use Scenario: Converting differential RS-485 bus signals to single-ended logic levels in programmable logic controllers with EMI-prone factory environments. IC Role / Device Role / Timing Role: Dual comparator decodes bus state (A>B or B>A) while rejecting common-mode noise up to ±10V via high CMRR (0.1mV/V). Use Value: Input common-mode range of −0.1V to VCC + 0.1V accommodates ground potential shifts across long cable runs; 4mA drive strength ensures robust logic-level transitions despite stub capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH7322MA/NOPB | Single 5.5ns delay, no latch-enable, no shutdown; 2.7–12V supply; 10-pin VSSOP package. | Lacks dual-channel synchronization and power management-requires external logic for latching and separate enable control. | Select when wider supply range (up to 12V) and higher input voltage tolerance (>±12V) are needed, and latch/shutdown are implemented externally. |
| ADCMP602BRMZ-REEL | 4.5ns delay, dual comparator, no latch, no shutdown; 3–5.5V supply; 8-pin MSOP package. | Missing LEA/LEB and SHDN pins-cannot hold output state or reduce power; smaller footprint but no rail-to-rail input. | Choose for space-constrained designs where latch and shutdown are unnecessary and input range is limited to GND–VCC. |
Compared with LMH7322MA/NOPB and ADCMP602BRMZ-REEL, the MAX963ESD+ uniquely integrates latch-enable per channel and shutdown in a 14-pin SO package-making it the only option among the three that supports autonomous timing capture and battery-aware power cycling without external support circuitry.
Availability
MAX963ESD+ is available at Aetrix Electronics and suitable for GPS receivers, portable medical instruments, and industrial fieldbus line receivers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX963ESD+ 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 design company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX961–MAX964 family was engineered specifically for ultra-high-speed, low-power comparator applications in portable and timing-critical systems-emphasizing rail-to-rail input operation, integrated hysteresis, and flexible output control.
FAQ
What is the operating temperature range for MAX963ESD+?
The MAX963ESD+ is specified for operation from −40°C to +85°C (E grade). This range is validated across all electrical parameters including propagation delay, input offset voltage, and supply current. The device uses standard silicon process technology and does not include automotive-grade qualification or extended-temperature variants like the MAX999AAUK+.
Does MAX963ESD+ support rail-to-rail input operation?
Yes, the MAX963ESD+ supports Beyond-the-Rails™ input operation: its input common-mode range extends from −0.1V to VCC + 0.1V. This allows either input (INA+, INA−, INB+, INB−) to be driven 100mV below GND or 100mV above VCC while maintaining valid comparator function and specified propagation delay.
How does the latch-enable feature work on MAX963ESD+?
The MAX963ESD+ provides independent latch-enable inputs LEA (Pin 3) and LEB (Pin 7). When LEA is high, Comparator A's output (QA/QA) is latched; when low, it operates transparently. LEB controls Comparator B identically. Latch timing parameters-including 5ns setup/hold and 10ns propagation delay-are fully characterized and guaranteed across temperature.
Can MAX963ESD+ drive standard TTL or CMOS logic directly?
Yes, the MAX963ESD+ outputs are TTL/CMOS-compatible: each output can source or sink 4mA while maintaining VOH ≥ VCC − 0.52V and VOL ≤ 0.52V. This meets standard TTL VOH (≥2.4V at VCC = 5V) and VOL (≤0.4V) requirements, and exceeds CMOS VIH/VIL thresholds across the full supply range (2.7–5.5V).
What is the shutdown behavior of MAX963ESD+?
When SHDN (Pin 13) is pulled high, both comparators enter shutdown mode: supply current drops to 0.27mA per comparator, and all outputs (QA, QA, QB, QB) enter high-impedance state. Normal operation resumes within 250ns after SHDN returns low, provided LEA/LEB are held low during wake-up to avoid indeterminate output states.
MAX963ESD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- Beyond-the-Rails™
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- CMOS, Complementary, TTL
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 5.5V
- :
- 1.5mV @ 5V
- Voltage - Input Offset (Max):
- 15µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 11mA
- Current - Quiescent (Max):
- 80dB CMRR, 86.02dB PSRR
- CMRR, PSRR (Typ):
- 7ns
- Propagation Delay (Max):
- 3.5mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
MAX963ESD+ FAQ
1.How can I place an order for MAX963ESD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX963ESD+ 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 MAX963ESD+ reliable?
The price and inventory of MAX963ESD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX963ESD+ is usually 5 days.
3.What payment methods are accepted for MAX963ESD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX963ESD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX963ESD+?
MAX963ESD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX963ESD+ 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 MAX963ESD+?
For technical support, including MAX963ESD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX963ESD+ requirements.
6.How does Aetrix verify that MAX963ESD+ is sourced from the original manufacturer or authorized distributors?
All MAX963ESD+ 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 MAX963ESD+ meets industry standards.
7.What is the process for return or replacement of MAX963ESD+?
All MAX963ESD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX963ESD+, 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 MAX963ESD+ part is unused and in its original packaging.
Return procedure for MAX963ESD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX963ESD+ Tags
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