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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:7,348
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Product details
Overview
MAX9107EKA-T from Maxim Integrated is a dual, high-speed, low-power TTL comparator IC designed for single +5V supply systems. It delivers 25ns propagation delay (10mV overdrive), 350µA per comparator supply current (1.75mW), and features internal 2mV hysteresis, TTL-compatible outputs, and rail-to-rail input common-mode range (–0.2V to VCC–1.5V). It is used in battery-powered threshold detection and A/D converter front-ends.
For engineers reviewing the MAX9107EKA-T datasheet, MAX9107EKA-T pinout, MAX9107EKA-T application, or MAX9107EKA-T equivalent, key selection criteria include propagation delay vs. power trade-off, latch-free dual-channel architecture, SOT23-8 package footprint compatibility, and guaranteed –40°C to +85°C operation without external pull-ups.
Technical Context
The MAX9107EKA-T implements two independent bipolar comparator cells with open-collector TTL outputs, each featuring fixed 2mV internal hysteresis to suppress noise-induced oscillation during slow input transitions. Its input stage accepts common-mode voltages from –0.2V below ground to 1.5V below VCC, enabling direct interfacing with sensors and DACs operating near ground or rail.
Propagation delay is tightly controlled at 25ns (typical) with 10mV input overdrive and 15pF load, while differential skew between channels remains ≤1ns. The device draws only 350µA per comparator under full-load conditions (outputs low), supporting ultra-low-power portable instrumentation and sampling circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 25ns typical (10mV overdrive, CL = 15pF) - enables high-speed zero-crossing and sampling up to ~20MHz. |
| Supply Current per Comparator | 350µA at VCC = 5.5V, outputs low - supports battery life >1 year in always-on sensor nodes. |
| Input Common-Mode Range | –0.2V to VCC–1.5V - allows direct connection to ground-referenced transducers without level-shifting. |
| Input Offset Voltage | 4.0mV max (–40°C to +85°C) - ensures reliable 10mV-level threshold discrimination across temperature. |
| Hysteresis | 2mV typical - eliminates need for external feedback resistors in noisy industrial environments. |
| Output Type | TTL-compatible open-collector - drives standard logic without pull-up resistors, simplifying BOM and layout. |
| Operating Temperature | –40°C to +85°C - qualified for automotive cabin and industrial control applications. |
Pinout & Package
SOT23-8 package (8-pin small-outline transistor outline), 3.0mm × 1.7mm footprint, 1.3mm height, lead pitch 0.65mm. RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Channel A open-collector TTL output - sinks up to 8mA; requires external pull-up for logic-high assertion. |
| 2 | INA− | Channel A inverting input - referenced to internal hysteresis zone; accepts –0.2V to VCC–1.5V. |
| 3 | INA+ | Channel A noninverting input - same voltage range as INA−; defines trip point with 2mV hysteresis window. |
| 4 | GND | Analog/digital ground reference - must be connected to low-impedance PCB ground plane for stable high-speed operation. |
| 5 | VCC | Positive supply input - operates from 4.5V to 5.5V; decoupling capacitor (0.1µF ceramic) required within 2mm. |
| 6 | INB+ | Channel B noninverting input - electrically identical to INA+; enables independent dual-threshold monitoring. |
| 7 | INB− | Channel B inverting input - matches INA− specs; supports differential or single-ended configurations per channel. |
| 8 | OUTB | Channel B open-collector TTL output - fully independent of OUTA; no cross-talk or shared timing path. |
Key Features
| Feature | Design Value |
|---|---|
| 25ns propagation delay | Enables real-time response in 40MHz sampling windows and fast overvoltage protection triggers. |
| 350µA per comparator supply current | Reduces total system quiescent current by >50% versus legacy MAX907, extending coin-cell life in portable meters. |
| Internal 2mV hysteresis | Eliminates external resistor networks and layout sensitivity, improving production yield in high-volume consumer devices. |
| TTL-compatible open-collector outputs | Directly interfaces with 74LS/74HC logic families and microcontroller GPIOs without level translators or pull-up resistors. |
| Rail-to-rail input common-mode range | Supports direct sensing of 0–5V sensor outputs (e.g., thermistors, potentiometers) without op-amp buffering. |
Applications
| Battery-Powered Threshold Detector | A/D Converter Input Comparator |
|---|---|
Use Scenario: Monitoring lithium-ion cell voltage during charging to trigger cutoff at 4.2V and prevent overcharge. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel monitors upper limit (4.2V), second monitors lower hysteresis bound (4.198V). Use Value: 25ns response ensures immediate cutoff before cell voltage overshoots; 350µA quiescent current extends battery runtime between charges. |
Use Scenario: Front-end comparator for successive-approximation ADC sampling clock generation in data loggers. IC Role / Device Role / Timing Role: Compares analog input against DAC output during binary search; latches decision for SAR logic. Use Value: 1ns channel-to-channel skew prevents timing misalignment in multi-bit conversion cycles; TTL output directly clocks CMOS logic. |
| Line Receiver for Industrial Serial Bus | Zero-Crossing Detector for AC Mains Sensing |
Use Scenario: Converting RS-422 differential signals to single-ended TTL levels in factory automation controllers. IC Role / Device Role / Timing Role: One comparator channel receives inverted signal, other receives non-inverted - outputs combined via wired-OR. Use Value: –0.2V input capability accommodates negative bus swing; 25ns delay supports >10Mbps line rates with margin. |
Use Scenario: Detecting AC zero crossings in smart energy meters using transformer-coupled 120V/240V inputs. IC Role / Device Role / Timing Role: Configured with resistive divider to scale mains to 0–5V range; hysteresis rejects EMI-induced false triggers. Use Value: 2mV hysteresis rejects 50/60Hz harmonics and switching noise; rail-to-rail input avoids clipping near 0V crossing point. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual TTL comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Slower (1.3µs propagation delay), higher supply current (500µA/comparator), no internal hysteresis, wider supply range (2–36V). | Used where wide voltage flexibility matters more than speed or low power; requires external hysteresis resistors for noise immunity. | Select LM393DR only when operating outside 4.5–5.5V or needing >36V tolerance; not suitable for <100kHz sampling or battery-constrained designs. |
| TLV3702IDR | Faster (85ns), rail-to-rail I/O, CMOS output (push-pull), lower offset (1.5mV), but higher quiescent current (800µA/comparator) and no internal hysteresis. | Preferred for mixed-voltage systems (1.8–5.5V) and when push-pull outputs eliminate external pull-ups; lacks built-in noise immunity. | Choose TLV3702IDR for low-voltage (1.8–3.3V) designs or when output drive strength exceeds TTL requirements; add external hysteresis if noise is present. |
Compared with LM393DR and TLV3702IDR, the MAX9107EKA-T uniquely balances nanosecond-speed response, sub-milliwatt power, and integrated hysteresis in a space-efficient SOT23-8 package - making it optimal for compact, high-reliability 5V threshold-detection systems where layout simplicity and deterministic timing are critical.
Availability
MAX9107EKA-T is available at Aetrix Electronics and suitable for battery-powered instrumentation, A/D converter front-ends, and industrial line receivers requiring stable component supply and long-term obsolescence management.
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) is a U.S.-based semiconductor company specializing in precision analog, mixed-signal, and high-speed interface ICs for industrial, communications, and computing markets.
The MAX9107EKA-T belongs to Maxim's high-speed comparator product line, engineered specifically for low-power, single-supply 5V systems demanding fast, clean switching without external components - targeting portable test equipment and real-time control loops.
FAQ
What is the maximum supply voltage rating for MAX9107EKA-T?
The MAX9107EKA-T has an absolute maximum supply voltage of 6V (VCC to GND), but its specified operating range is 4.5V to 5.5V. Operation beyond 5.5V voids parametric guarantees and risks reliability degradation. For robust 5V system design, maintain VCC within ±5% tolerance and use a 0.1µF ceramic decoupling capacitor adjacent to pin 5 (VCC) of the MAX9107EKA-T.
Does MAX9107EKA-T include an internal latch function?
No, the MAX9107EKA-T does not include an internal latch. Latch functionality is exclusive to the MAX9109 variant (e.g., MAX9109EXT-T), which features a dedicated LE (latch enable) pin. The MAX9107EKA-T provides two independent, transparent comparators with no storage element - output state changes immediately with input differential voltage crossing the hysteresis band.
Can MAX9107EKA-T operate with input voltages below ground?
Yes, the MAX9107EKA-T supports input common-mode voltages down to –0.2V (200mV below ground), as confirmed in its Electrical Characteristics table. This allows direct interfacing with transducers or op-amps that swing slightly negative. However, absolute minimum input voltage is –0.3V - sustained operation below –0.2V requires current limiting to ≤20mA per input pin to avoid damage.
What is the output configuration of MAX9107EKA-T and how should it be terminated?
The MAX9107EKA-T features open-collector TTL-compatible outputs (OUTA and OUTB). Each output must be pulled up to VCC (or another logic-compatible voltage ≤5.5V) via an external resistor. Typical values range from 1kΩ (for fast rise time with capacitive loads <10pF) to 10kΩ (for low-power applications). No internal pull-up exists - omitting the external resistor results in undefined logic-high states.
How does the internal hysteresis of MAX9107EKA-T improve noise immunity?
The MAX9107EKA-T incorporates a fixed 2mV input-referred hysteresis, creating separate upper and lower trip points (VTRIP+ and VTRIP−). When an input signal crosses VTRIP+, the output switches high; it only switches low again after the input falls below VTRIP−. This 2mV window prevents multiple toggles caused by noise or slow edges near the threshold - eliminating the need for external positive feedback resistors typically required with standard comparators like LM393.
MAX9107EKA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SOT-23-8
- Series:
- MAX9107
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Push-Pull, TTL
- Voltage - Supply, Single/Dual (±):
- 4.5V ~ 5.5V
- :
- 1.6mV @ 5V
- Voltage - Input Offset (Max):
- 0.35µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 700µA
- Current - Quiescent (Max):
- -82dB, -82dB
- CMRR, PSRR (Typ):
- 25ns (Typ)
- 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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