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Analog Devices Inc./Maxim Integrated MAX9094ASD+
- Part No.:
- MAX9094ASD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX9094ASD+.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:249
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Product details
Overview
The MAX9094ASD+ from Maxim Integrated is a quad, low-voltage, open-drain comparator IC with guaranteed operation from +1.8V to +5.5V, -40°C to +125°C automotive temperature range, 100ns propagation delay (at 100mV overdrive), 220–360µA supply current (all four comparators), and input common-mode range extending to ground. It serves as a pin-for-pin replacement for the LM339H in compact SO-14 packaged systems requiring noise-immune signal conditioning.
For engineers reviewing the MAX9094ASD+ datasheet, MAX9094ASD+ pinout, MAX9094ASD+ application, or MAX9094ASD+ equivalent, key selection criteria include its quad-channel open-drain architecture, internal hysteresis-free design (vs. MAX9095), SO-14 package compatibility, and performance across battery-powered, portable, and automotive-grade low-voltage sensing circuits.
Technical Context
The MAX9094ASD+ implements four independent voltage comparators in a single SO-14 package, each with rail-to-rail input capability down to VSS (ground) and output saturation voltage of 120mV at 4mA sink. It lacks internal hysteresis-unlike the MAX9095-making external hysteresis design necessary for noisy environments.
Its BiCMOS process enables low input bias current (±0.0003nA typ at +25°C), low input offset voltage (0.4–7mV), and high PSRR (60–90dB), supporting stable operation in mixed-signal systems with varying supply quality and EMI exposure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V - supports direct interfacing with Li-ion, 3.3V, and 5V logic domains without level shifting. |
| Propagation Delay | 70–120ns (tPHL/tPLH at 100mV overdrive) - enables reliable detection of fast transitions in sensor wake-up or power-monitoring circuits. |
| Input Offset Voltage | 0.4–7mV (typ/max) - ensures accurate threshold detection in precision voltage monitoring applications like battery cell balancing. |
| Supply Current | 250–400µA (all four channels, +25°C) - enables multi-comparator functionality in ultra-low-power portable devices with tight budget constraints. |
| Output Sink Current | 10–35mA - drives standard pull-up resistors (1–10kΩ) and small logic inputs directly without external buffers. |
| Input Common-Mode Range | -0.1V to VDD – 0.8V - allows ground-referenced inputs and compatibility with single-supply op-amp front-ends. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive, industrial control, and extended-life portable equipment use. |
Pinout & Package
MAX9094ASD+ is housed in a 14-pin SO (Small Outline) package with 1.27mm pitch, JEDEC MS-012AC compliant, and RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTC | Comparator C open-drain output - requires external pull-up; compatible with I²C bus voltage levels when pulled to VDD or other logic rail. |
| 2 | OUTD | Comparator D open-drain output - independently configurable for multi-threshold alert generation or OR-wired status signaling. |
| 3 | VSS | Negative supply terminal (GND) - must be connected directly to system ground plane for stable reference and noise immunity. |
| 4 | IND+ | Comparator D noninverting input - accepts signals up to VDD – 0.8V; no phase reversal on overdrive. |
| 5 | INA- | Comparator A inverting input - differential pair node; matched to INA+ for low offset and drift. |
| 6 | INA+ | Comparator A noninverting input - primary sensing node for threshold comparison; supports rail-to-rail common-mode range. |
| 7 | OUTA | Comparator A open-drain output - used for primary system alert or enable signal; shares layout rules with OUTB/OUTC/OUTD. |
| 8 | VDD | Positive supply input (+1.8V to +5.5V) - requires local 0.1µF ceramic bypass capacitor to VSS for transient stability. |
| 9 | INC+ | Comparator C noninverting input - identical electrical behavior to INA+/INB+/IND+; enables consistent multi-channel design. |
| 10 | INC- | Comparator C inverting input - matched pair with INC+; maintains <7mV offset across full temperature range. |
| 11 | IND- | Comparator D inverting input - supports differential sensing configurations with external resistor networks. |
| 12 | INB+ | Comparator B noninverting input - designated for secondary monitoring path (e.g., backup voltage rail or thermal sensor). |
| 13 | OUTB | Comparator B open-drain output - provides second independent status flag; electrically isolated from other outputs. |
| 14 | INB- | Comparator B inverting input - referenced to same VSS as all other inputs; enables shared reference architectures. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal on overdriven inputs | Prevents erroneous output toggling during input transients beyond common-mode limits - critical for robust power-on reset and fault detection. |
| Open-drain outputs with 35mA sink capability | Enables wired-OR logic, level translation, and direct interface to microcontroller interrupt pins without external FETs. |
| Rail-to-rail input common-mode range including ground | Supports direct connection to ground-referenced sensors (e.g., thermistors, current-shunt amplifiers) without input biasing networks. |
| Low 250–400µA supply current (full quad) | Permits continuous monitoring in always-on subsystems (e.g., battery fuel gauging, HVAC standby) without compromising runtime. |
| Guaranteed operation from -40°C to +125°C | Validates reliability in automotive engine control units, industrial motor drives, and outdoor IoT edge nodes without derating. |
Applications
| Battery Cell Voltage Monitoring | Automotive Door Lock Control |
|---|---|
Use Scenario: Monitoring individual Li-ion cell voltages in a 4-cell pack to trigger overvoltage/undervoltage protection before BMS shutdown. IC Role / Device Role / Timing Role: Quad comparator providing simultaneous threshold comparisons against fixed references for each cell. Use Value: Enables precise, independent cell-level decisions using only one IC - reduces component count vs. discrete dual comparators and avoids timing skew between channels. | Use Scenario: Detecting actuator position feedback (e.g., Hall sensor output) and validating solenoid driver readiness before enabling door lock/unlock sequence. IC Role / Device Role / Timing Role: Four-channel voltage window comparator verifying multiple safety conditions (voltage, current sense, temperature, enable signal) prior to command execution. Use Value: Consolidates four independent analog decision points into one SO-14 footprint - simplifies PCB routing and improves functional safety compliance via hardware redundancy. |
| Portable Medical Pulse Oximeter | Industrial PLC Analog Input Module |
Use Scenario: Comparing amplified photodiode signals against dynamically adjusted thresholds to detect pulse peaks and troughs in low-SNR optical sensing. IC Role / Device Role / Timing Role: High-speed quad comparator capturing rapid LED modulation edges while rejecting ambient light noise through precise timing windows. Use Value: 100ns propagation delay ensures sub-microsecond response to physiological events - critical for real-time SpO₂ calculation accuracy. | Use Scenario: Converting 4–20mA current loop inputs into digital alarm states (e.g., high/low limit, rate-of-change, open-circuit detection) within modular I/O chassis. IC Role / Device Role / Timing Role: Four independent comparators per channel performing simultaneous fault detection on analog input stages before ADC sampling. Use Value: Eliminates need for separate comparator ICs per channel - cuts BOM cost by 60% and reduces board area in space-constrained DIN-rail modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Wider supply range (2–36V), higher supply current (500µA), no guaranteed 1.8V operation, no automotive temp grade. | Used in industrial AC-powered systems where 5V+ supplies dominate and extended temperature is not required. | Select LM339DR only if operating above +5V or outside -40°C to +125°C; not suitable for modern low-voltage portable designs. |
| MAX9095ASD+ | Identical pinout and package, but includes 2mV internal hysteresis on all four comparators. | Preferred for noisy environments (e.g., motor drive feedback, switch-mode PSU monitoring) where external hysteresis is impractical. | Choose MAX9095ASD+ when input signals exhibit slow slew rates or EMI susceptibility; MAX9094ASD+ offers lower cost where hysteresis is added externally. |
Compared with LM339DR and MAX9095ASD+, the MAX9094ASD+ delivers optimal trade-offs for battery-powered and automotive applications: lowest minimum supply voltage (1.8V), guaranteed wide-temp operation, and zero-cost hysteresis flexibility - enabling either minimal external components (with MAX9095ASD+) or full design control (with MAX9094ASD+).
Availability
MAX9094ASD+ is available at Aetrix Electronics and suitable for battery-powered electronics, automotive body control modules, and industrial portable instrumentation requiring stable component supply across extended temperature and long production lifecycles.
Supply support for MAX9094ASD+ 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 company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, communications, and computing markets.
The MAX909x family was designed specifically for low-voltage, space-constrained, and thermally demanding applications - delivering quad/dual comparators in tiny SOT23/μMAX and SO/TSSOP packages with guaranteed automotive-grade reliability.
FAQ
What is the maximum supply voltage rating for the MAX9094ASD+?
The MAX9094ASD+ has an absolute maximum supply voltage (VDD to VSS) of +6V. However, its guaranteed operational range is +1.8V to +5.5V. Operating continuously at +6V exceeds specification limits and may compromise long-term reliability or parametric performance - always maintain VDD ≤ +5.5V in production designs using MAX9094ASD+.
Does the MAX9094ASD+ include internal hysteresis?
No, the MAX9094ASD+ does not include internal hysteresis. That feature is exclusive to the MAX9095ASD+ variant within the same family. The MAX9094ASD+ requires external hysteresis circuitry (e.g., positive feedback resistors) when used in noisy environments or with slow-moving input signals to prevent output oscillation - a key distinction confirmed in the MAX9094ASD+ datasheet's Features and Detailed Description sections.
What package type is used for the MAX9094ASD+?
The MAX9094ASD+ uses a 14-pin Small Outline (SO) package, also referred to as SOIC-14 or SO-14, with 1.27mm lead pitch and JEDEC MS-012AC outline. This package is RoHS-compliant ("+" suffix), thermally rated for 952mW continuous power dissipation at +70°C ambient, and compatible with standard reflow soldering profiles up to +260°C.
Can the MAX9094ASD+ operate from a 1.8V supply?
Yes, the MAX9094ASD+ is fully specified and guaranteed to operate from +1.8V to +5.5V. At 1.8V, it delivers 6.4mA output sink current, 56mV output saturation voltage (ISINK = 1mA), and maintains 120ns propagation delay - making it suitable for ultra-low-voltage applications such as coin-cell-powered sensors and wearables where the MAX9094ASD+ replaces higher-voltage comparators without performance loss.
Is the MAX9094ASD+ pin-compatible with the LM339H?
Yes, the MAX9094ASD+ is explicitly documented as a pin-for-pin compatible replacement for the LM339H in the 14-pin SO package. Both share identical pin functions (e.g., OUTA, OUTB, OUTC, OUTD, VDD, VSS, and all eight input terminals), enabling drop-in substitution without PCB modification - provided the system operates within the MAX9094ASD+'s +1.8V to +5.5V supply and -40°C to +125°C temperature envelope.
MAX9094ASD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 1.8V ~ 5.5V
- :
- 7mV @ 5V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 35mA @ 5V
- Current - Output (Typ):
- 400µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 100ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
MAX9094ASD+ FAQ
1.How can I place an order for MAX9094ASD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9094ASD+ 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 MAX9094ASD+ reliable?
The price and inventory of MAX9094ASD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9094ASD+ is usually 5 days.
3.What payment methods are accepted for MAX9094ASD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9094ASD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9094ASD+?
MAX9094ASD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9094ASD+ 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 MAX9094ASD+?
For technical support, including MAX9094ASD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9094ASD+ requirements.
6.How does Aetrix verify that MAX9094ASD+ is sourced from the original manufacturer or authorized distributors?
All MAX9094ASD+ 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 MAX9094ASD+ meets industry standards.
7.What is the process for return or replacement of MAX9094ASD+?
All MAX9094ASD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX9094ASD+, 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 MAX9094ASD+ part is unused and in its original packaging.
Return procedure for MAX9094ASD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9094ASD+ Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP USA Inc.
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