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Analog Devices Inc./Maxim Integrated MAX915ESA
- Part No.:
- MAX915ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX915ESA.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,427
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Product details
Overview
The MAX915ESA from Maxim Integrated is a single, ultra-high-speed TTL voltage comparator with master/slave flip-flop architecture, 6ns typical propagation delay, 2mV input resolution, and operation from ±5V dual or +5V single supply. It resolves small-signal thresholds in high-speed line receivers and synchronous data discriminators.
For engineers reviewing the MAX915ESA datasheet, MAX915ESA pinout, MAX915ESA application, or MAX915ESA equivalent, this page delivers verified electrical specs, clocked comparator timing behavior, ground-sensing capability with single-supply biasing, and validated alternative options for high-resolution, oscillation-free threshold detection.
Technical Context
The MAX915ESA implements a negative edge-triggered master/slave D flip-flop between its fully differential input amplifier and complementary TTL output stage, eliminating oscillation and decoupling propagation delay from input overdrive. Its input common-mode range extends to V− − 0.1V, enabling true ground-referenced sensing under +5V single-supply operation.
Propagation delay (tPD+ = 6ns typ, tPD− = 6ns typ) and setup time (tSU = 1.0ns typ at 10mV overdrive) are guaranteed across −40°C to +85°C, with skew <1.5ns between Q and Q outputs. Input offset voltage remains ≤1.5mV max over temperature, and no minimum input slew rate is required due to clocked sampling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 6ns typical - enables >50MHz clocked operation with deterministic timing |
| Input Resolution | 2mV - resolves sub-millivolt differential signals across full common-mode range |
| Supply Range | +5V single or ±5V dual - supports ground-sensing via V− tied to GND |
| Input Common-Mode Range | V− − 0.1V to V+ − 2.2V - allows inputs below ground in single-supply mode |
| Output Type | Complementary TTL - drives standard Schottky TTL loads with fan-out of four |
| Power Dissipation | 170mW max per comparator - low static power for high-speed performance |
| Clock Setup Time | 1.0ns typical at 10mV overdrive - minimal timing margin required before falling clock edge |
Pinout & Package
MAX915ESA is housed in an 8-pin SO (Small Outline) package, rated for −40°C to +85°C operation, with gull-wing leads and 1.27mm pitch.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V+ | Positive supply rail (+5V or +5.25V); powers analog input and digital output stages |
| 2 | IN+ | Noninverting input; accepts signals down to V− − 0.1V, including ground in single-supply mode |
| 3 | IN− | Inverting input; matched to IN+ for differential signal rejection and offset minimization |
| 4 | CLK | Negative-edge-triggered clock input; controls sampling instant; VIH = 2V, VIL = 0.8V |
| 5 | GND | Digital ground reference; all TTL outputs (Q/Q) and clock referenced to this node |
| 6 | Q | True TTL output; active-high logic level (VOH ≥ 2.8V, VOL ≤ 0.4V) |
| 7 | Q | Complementary TTL output; inverted relative to Q; enables differential signaling |
| 8 | V− | Negative supply rail (−5V or GND); powers only analog input stage; must be bypassed independently |
Key Features
| Feature | Design Value |
|---|---|
| Oscillation-free architecture | Master/slave D flip-flop breaks input-to-output path, eliminating need for external hysteresis or slew-rate limiting |
| Overdrive-insensitive delay | 6ns propagation delay stable across 5mV–100mV input overdrive - simplifies timing budgeting |
| Ground-sensing capability | Input common-mode extends to V− − 0.1V; permits direct interface to 0V-referenced sensors with +5V supply |
| Low-power TTL drive | 14mA supply current per comparator (70mW @ +5V); compatible with legacy TTL logic families |
| No minimum slew rate | Valid output guaranteed as long as tSU is met - supports slow-rising thresholds without ringing or chatter |
Applications
| High-Speed Line Receiver | Threshold Detector |
|---|---|
|
Use Scenario: Digitizing analog communication signals on twisted-pair lines with jitter-sensitive timing. IC Role / Device Role / Timing Role: Clock-sampled comparator converting differential line voltage into synchronized TTL-level data bits. Use Value: 6ns delay and <1.5ns skew ensure precise bit alignment across multi-channel receivers without added timing compensation. |
Use Scenario: Detecting crossing of precise voltage thresholds in sensor signal conditioning paths. IC Role / Device Role / Timing Role: High-resolution comparator generating clean, chatter-free logic transitions at sub-millivolt thresholds. Use Value: 2mV resolution and no minimum slew requirement allow reliable triggering on slow-moving thermistor or strain-gauge outputs. |
| Peak Detector Interface | Synchronous Data Discriminator |
|
Use Scenario: Converting analog peak-hold outputs into timed digital flags for ADC sampling control. IC Role / Device Role / Timing Role: Clock-gated comparator validating peak amplitude against reference prior to sample-and-hold release. Use Value: Negative-edge triggering aligns decision point precisely with system clock edges, minimizing aperture uncertainty. |
Use Scenario: Extracting valid data windows from high-frequency serial streams using clock-aligned slicing. IC Role / Device Role / Timing Role: Synchronized comparator acting as data slicer, rejecting noise outside the clock-defined decision window. Use Value: Clocked architecture rejects intersymbol interference and ensures deterministic output even with marginal eye openings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed TTL comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX905ESA | 2ns propagation delay, complementary ECL outputs, requires −5.2V supply | Used where ECL logic interfacing and sub-3ns timing are mandatory; not TTL-compatible | Select MAX905ESA only when ECL load driving and faster response outweigh TTL compatibility needs |
| LM360M | 25ns propagation delay, no internal clock, open-collector outputs, ±15V supply capable | Preferred for wide-supply industrial comparators without strict timing constraints or clock synchronization | Choose LM360M for robustness in noisy environments where speed is secondary to supply flexibility and latch-up immunity |
Compared with MAX915ESA, MAX905ESA trades TTL compatibility and single-supply simplicity for ECL speed and lower delay, while LM360M sacrifices nanosecond timing for broader voltage range and open-collector versatility-neither is pin-compatible, and both require PCB layout and logic-level adaptation.
Availability
MAX915ESA is available at Aetrix Electronics and suitable for high-speed line receivers, synchronous data discriminators, threshold detectors, and peak detector interfaces requiring stable component supply across extended temperature ranges.
Supply support for MAX915ESA 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 demanding performance applications, with expertise in high-speed signal conditioning and power management.
The MAX915ESA belongs to Maxim's ultra-high-speed comparator product line, engineered specifically for clock-synchronized, oscillation-free threshold detection in data acquisition, communications, and test equipment.
FAQ
What is the operating temperature range for the MAX915ESA?
The MAX915ESA is specified for operation from −40°C to +85°C, matching the "E" grade industrial temperature rating. This range is validated across all key parameters including propagation delay, input offset voltage, and output drive strength, making MAX915ESA suitable for deployment in automotive under-hood modules, industrial PLC I/O, and outdoor communications hardware where ambient extremes are expected.
Does the MAX915ESA require external hysteresis for stable operation?
No, the MAX915ESA does not require external hysteresis. Its internal negative edge-triggered master/slave D flip-flop architecture inherently prevents oscillation by breaking the DC feedback path, even when input signals dwell near the threshold. Adding external hysteresis resistors is ineffective and discouraged, as the flip-flop makes hysteresis unnecessary and externally imposed feedback cannot override the clocked sampling behavior of MAX915ESA.
Can the MAX915ESA operate from a single +5V supply?
Yes, the MAX915ESA supports single +5V supply operation: connect V− to GND, use IN+ and IN− within the common-mode range of −0.1V to +2.8V, and reference CLK, Q, and Q to GND. The input stage retains full functionality-including ground-sensing-because the common-mode range extends 0.1V below V−, allowing true 0V-referenced inputs. This configuration is explicitly validated in the MAX915ESA datasheet and typical operating characteristics.
What is the maximum clock frequency supported by the MAX915ESA?
The MAX915ESA supports clock frequencies exceeding 50MHz, limited primarily by its 6ns typical propagation delay and 1.0ns setup time. Since it triggers only on the falling edge, the maximum output toggle rate is half the clock frequency. For reliable operation, the clock period must exceed tPD+ + tSU (≈7ns), supporting sustained operation up to ~140MHz in optimized layouts-though 50–80MHz is recommended for robust margin across voltage and temperature.
How does the MAX915ESA handle input signals with very low slew rates?
The MAX915ESA eliminates minimum input slew rate requirements through its clocked master/slave architecture. As long as the input signal exceeds the total DC error (≤1.5mV offset + noise + CMRR/PSRR contributions) and meets the 1.0ns setup time before the clock's falling edge, the output will be valid and chatter-free-even for millisecond-scale ramps. This behavior is intrinsic to MAX915ESA's design and confirmed across its full −40°C to +85°C range.
MAX915ESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Complementary, TTL
- Voltage - Supply, Single/Dual (±):
- 6V
- :
- 1.5mV @ ±5V
- Voltage - Input Offset (Max):
- 10µA @ ±5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 4mA, 18mA
- Current - Quiescent (Max):
- 39.08dB CMRR, 36dB PSRR
- CMRR, PSRR (Typ):
- 12ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
MAX915ESA FAQ
1.How can I place an order for MAX915ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX915ESA 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 MAX915ESA reliable?
The price and inventory of MAX915ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX915ESA is usually 5 days.
3.What payment methods are accepted for MAX915ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX915ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX915ESA?
MAX915ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX915ESA 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 MAX915ESA?
For technical support, including MAX915ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX915ESA requirements.
6.How does Aetrix verify that MAX915ESA is sourced from the original manufacturer or authorized distributors?
All MAX915ESA 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 MAX915ESA meets industry standards.
7.What is the process for return or replacement of MAX915ESA?
All MAX915ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX915ESA, 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 MAX915ESA part is unused and in its original packaging.
Return procedure for MAX915ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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