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Analog Devices Inc./Maxim Integrated MAX9107EKA+T
- Part No.:
- MAX9107EKA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SOT-23-8
- Datasheet:
-
MAX9107EKA+T.pdf
- Description:
- IC COMPARATOR 2 GEN PUR SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:293
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Product details
Overview
MAX9107EKA+T from Maxim Integrated is a dual, high-speed, low-power voltage comparator optimized for single +5V systems. It delivers 25ns propagation delay with 10mV input overdrive, consumes only 350µA per comparator (1.75mW), and supports input common-mode range from −200mV to VCC−1.5V. It is used in battery-powered threshold detection and A/D converter front-ends where TTL-compatible outputs and internal hysteresis eliminate external components.
For engineers reviewing the MAX9107EKA+T datasheet, MAX9107EKA+T pinout, MAX9107EKA+T application, or MAX9107EKA+T equivalent, this page provides verified electrical parameters, SOT23-8 package mapping, dual-channel comparator role clarification, latch-free operation distinction from MAX9109, and design-meaningful specifications for high-speed analog signal conditioning in space-constrained industrial and portable systems.
Technical Context
The MAX9107EKA+T implements a bipolar process-based dual comparator architecture with independent IN+/IN− pairs per channel and open-collector–compatible TTL outputs. Its internal 2mV hysteresis ensures clean switching without external feedback, and its input stage operates down to −200mV below ground while maintaining rail-to-rail common-mode tolerance up to VCC−1.5V.
Propagation delay skew between channels is ≤5ns, differential propagation delay is ≤1ns, and output rise/fall times are 12ns/6ns into 10pF. The device lacks latch functionality-unlike MAX9109-and has no LE pin; all eight pins serve active comparator or power functions in the SOT23-8 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 25ns at 10mV overdrive - enables sampling of ≥20MHz analog signals with deterministic timing. |
| Supply Current per Comparator | 350µA at VCC = 5.5V - supports ultra-low-power operation in battery-backed systems. |
| Input Offset Voltage | 4.0mV max over −40°C to +85°C - ensures accurate threshold detection across industrial temperature range. |
| Input Common-Mode Range | −0.2V to VCC−1.5V - allows direct interfacing with ground-referenced sensors and rail-split supplies. |
| Output Compatibility | TTL logic levels (VOH ≥ 3.0V at 100µA, VOL ≤ 0.6V at 3.2mA) - drives standard logic without pull-up resistors. |
| Hysteresis | 2mV internal - prevents chatter on slow-moving inputs without external resistor networks. |
| Operating Supply Range | 4.5V to 5.5V - compatible with regulated +5V rails and tolerates typical LDO dropout variation. |
Pinout & Package
MAX9107EKA+T is housed in an 8-pin SOT23 package (package code K8-5), with exposed pad not electrically connected. Pin assignments are validated per Maxim's official pin configuration diagram for MAX9107 in SOT23/SO format.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Positive supply input - must be decoupled with 0.1µF ceramic capacitor placed adjacent to pin. |
| 2 | OUTB | Channel B TTL-compatible output - sinks current when asserted low; no pull-up required. |
| 3 | INB− | Channel B inverting input - accepts signals down to −200mV; high-impedance (350nA max bias). |
| 4 | INB+ | Channel B noninverting input - matches INB− in voltage range and bias current spec. |
| 5 | OUTA | Channel A TTL-compatible output - independently driven; no cross-talk with OUTB. |
| 6 | INA− | Channel A inverting input - electrically identical to INB−; supports differential pair routing. |
| 7 | INA+ | Channel A noninverting input - fully symmetrical to INB+; enables dual independent comparisons. |
| 8 | GND | Analog/digital ground reference - requires low-inductance connection to PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| 25ns propagation delay | Enables real-time response to fast transients in line receivers and zero-crossing detectors without added latency. |
| Internal 2mV hysteresis | Eliminates need for external positive feedback resistors, reducing BOM count and layout area in threshold discriminators. |
| TTL-compatible outputs | Direct interface to 74LS/74HC logic families without pull-up resistors or level shifters, simplifying inter-stage coupling. |
| −200mV to VCC−1.5V input range | Supports single-supply operation with AC-coupled or bipolar sensor inputs without level-shifting circuitry. |
| 350µA per comparator supply current | Reduces total system quiescent power in multi-comparator designs such as quad-channel sampling circuits. |
Applications
| Battery-Powered Threshold Detection | A/D Converter Front-End |
|---|---|
|
Use Scenario: Monitoring battery voltage against low-charge cutoff thresholds in portable medical devices. IC Role / Device Role / Timing Role: Dual comparator performing simultaneous high/low threshold comparison with 25ns decision latency. Use Value: Enables precise, low-power state-of-charge determination using only one MAX9107EKA+T instead of discrete comparators and pull-ups. |
Use Scenario: Converting analog sensor outputs to digital logic levels prior to successive-approximation ADC sampling. IC Role / Device Role / Timing Role: High-speed signal conditioning block providing clean, jitter-free trigger edges synchronized to ADC clock. Use Value: 2mV hysteresis suppresses noise-induced false triggers, improving effective resolution of 12-bit ADC systems. |
| Line Receiver | Zero-Crossing Detector |
|
Use Scenario: Receiving RS-422/RS-485 differential signals in industrial control backplanes with single +5V supply. IC Role / Device Role / Timing Role: Single-ended conversion stage translating differential bus voltages into TTL logic for microcontroller input capture. Use Value: Wide input common-mode range accommodates ground offset up to 1.5V between nodes without signal distortion. |
Use Scenario: Detecting AC waveform polarity transitions in motor control feedback loops and power metering. IC Role / Device Role / Timing Role: Precision zero-reference comparator with matched input offsets minimizing dead-zone error. Use Value: 4.0mV max offset voltage over temperature ensures <±0.5° phase error at 50Hz/60Hz mains frequencies. |
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 |
|---|---|---|---|
| LM393DR | Slower (1.3µs propagation delay), higher supply current (500µA/channel), no internal hysteresis, wider supply range (2–36V). | Suitable for general-purpose DC level sensing but not for >100kHz signal edge detection or low-noise threshold discrimination. | Select LM393DR only when cost is primary and speed/power are secondary; MAX9107EKA+T is superior for time-critical 5V systems. |
| TLV3501CDR | Faster (4.5ns delay), rail-to-rail input, CMOS output (not TTL), higher supply current (8.5mA), requires pull-up for logic-high. | Preferred for high-speed ADC triggering or laser pulse detection but incompatible with legacy TTL loads without level translation. | Choose TLV3501CDR when sub-10ns timing is mandatory and board space allows for pull-up resistors; MAX9107EKA+T avoids that overhead. |
Compared with LM393DR and TLV3501CDR, MAX9107EKA+T uniquely balances 25ns speed, 350µA efficiency, TTL compatibility, and integrated 2mV hysteresis in a space-saving SOT23-8 package-making it optimal for compact, battery-aware, noise-resilient 5V comparator applications without redesigning interface logic.
Availability
MAX9107EKA+T is available at Aetrix Electronics and suitable for battery-powered systems, A/D converter front-ends, and line receivers requiring stable component supply, RoHS-compliant packaging, and guaranteed long-term industrial temperature support (−40°C to +85°C).
Supply support for MAX9107EKA+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, designs precision analog and mixed-signal ICs for industrial, automotive, and communications markets, emphasizing performance-per-watt and integration density.
The MAX9107EKA+T belongs to Maxim's high-speed comparator family engineered specifically for low-power, single-supply 5V systems where propagation delay, input range, and output compatibility must coexist without external components.
FAQ
What is the operating supply voltage range for MAX9107EKA+T?
The MAX9107EKA+T operates from 4.5V to 5.5V, with full specification guaranteed across this range. It is not rated for operation below 4.5V or above 5.5V; exceeding these limits may cause undefined behavior or damage. The device draws 350µA per comparator at 5.5V, and supply current scales linearly within the valid range as shown in the Typical Operating Characteristics graph on page 2 of the datasheet.
Does MAX9107EKA+T include an internal latch function?
No, MAX9107EKA+T does not include an internal latch. Latch functionality is exclusive to the MAX9109 variant, which features a dedicated LE (latch enable) pin. The MAX9107EKA+T is a dual comparator with two independent output channels (OUTA and OUTB) and no latching capability-its outputs respond immediately and continuously to input changes, making it suitable for real-time signal monitoring rather than sampled-data storage.
What package type and pin count does MAX9107EKA+T use?
MAX9107EKA+T uses an 8-pin SOT23 package (package code K8-5), with top mark AAIB. This surface-mount package measures 2.9mm × 1.6mm × 1.1mm and features gull-wing leads. It is distinct from the SO-8 version (MAX9107ESA+) and contains no NC (no-connect) pins-every pin serves an active comparator, supply, or ground function as confirmed in the official pin configuration diagram.
How does the internal hysteresis of MAX9107EKA+T improve system reliability?
The MAX9107EKA+T incorporates a fixed 2mV internal hysteresis, which eliminates oscillation during slow input transitions and prevents false triggering near threshold voltages. This removes the need for external hysteresis resistors, reducing component count, PCB area, and potential mismatch errors. In applications like battery voltage monitoring or zero-crossing detection, this ensures clean, chatter-free output edges even with noisy or slew-limited inputs-directly improving measurement repeatability and system robustness.
Can MAX9107EKA+T drive standard TTL logic inputs directly?
Yes, MAX9107EKA+T outputs are fully TTL-compatible: VOH ≥ 3.0V at 100µA source current and VOL ≤ 0.6V at 3.2mA sink current. This allows direct connection to 74LS, 74HC, and other TTL-family inputs without external pull-up resistors or level translators. The output structure is designed to meet TTL voltage thresholds under load, enabling seamless integration into legacy digital subsystems powered from the same +5V rail.
MAX9107EKA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SOT-23-8
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- TTL
- Voltage - Supply, Single/Dual (±):
- 4.5V ~ 5.5V
- :
- 1.6mV @ 5V
- Voltage - Input Offset (Max):
- 0.125µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 700µA
- Current - Quiescent (Max):
- 86.02dB CMRR, 86.02dB PSRR
- CMRR, PSRR (Typ):
- 25ns
- Propagation Delay (Max):
- 2mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-8
MAX9107EKA+T FAQ
1.How can I place an order for MAX9107EKA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9107EKA+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 MAX9107EKA+T reliable?
The price and inventory of MAX9107EKA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9107EKA+T is usually 5 days.
3.What payment methods are accepted for MAX9107EKA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9107EKA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9107EKA+T?
MAX9107EKA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9107EKA+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 MAX9107EKA+T?
For technical support, including MAX9107EKA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9107EKA+T requirements.
6.How does Aetrix verify that MAX9107EKA+T is sourced from the original manufacturer or authorized distributors?
All MAX9107EKA+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 MAX9107EKA+T meets industry standards.
7.What is the process for return or replacement of MAX9107EKA+T?
All MAX9107EKA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9107EKA+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 MAX9107EKA+T part is unused and in its original packaging.
Return procedure for MAX9107EKA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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