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Analog Devices Inc./Maxim Integrated MAX9094ASD+T
- Part No.:
- MAX9094ASD+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX9094ASD+T.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX9094ASD+T from Maxim Integrated is a quad, open-drain, low-voltage comparator IC with 14-pin SO package, guaranteed operation from +1.8V to +5.5V supply, -40°C to +125°C temperature range, and 100ns propagation delay at 100mV overdrive - used in battery-powered portable electronics for voltage monitoring and signal threshold detection.
For engineers reviewing the MAX9094ASD+T datasheet, MAX9094ASD+T pinout, MAX9094ASD+T application, or MAX9094ASD+T equivalent, key selection criteria include supply current (250–400µA at +25°C), input offset voltage (0.4–5mV), output saturation voltage (120–400mV at ISINK ≤ 4mA), hysteresis absence (vs. MAX9095), and SO-14 pin compatibility with legacy LMX339H-based designs.
Technical Context
The MAX9094ASD+T implements four independent high-speed comparators with rail-to-rail input common-mode range extending 0.1V below VSS and up to VDD – 0.8V, enabling direct sensing of ground-referenced signals without level-shifting. It features no phase reversal under overdriven inputs and open-drain outputs compatible with mixed-voltage logic interfaces via external pull-up resistors.
Unlike the hysteresis-equipped MAX9095ASD+T, the MAX9094ASD+T lacks internal hysteresis - requiring external positive feedback if noise immunity is needed in slow-signal applications. Its BiCMOS process delivers low input bias current (±0.0016nA typ) and high PSRR (60–90dB) across 1.8V–5.5V supply variation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V - supports single-cell Li-ion, 3.3V, and 5V systems without level translation |
| Propagation Delay | 70–120ns (tPHL/tPLH at 100mV overdrive) - enables reliable 10MHz signal edge detection |
| Input Offset Voltage | 0.4–5mV (typ/max at +25°C) - ensures accurate thresholding down to ~10mV differential |
| Supply Current | 250–400µA (all four channels, +25°C) - enables multi-comparator functions in ultra-low-power wake-up circuits |
| Output Saturation Voltage | 120–400mV at ISINK ≤ 4mA - guarantees clean LOW-level signaling into standard CMOS/TTL loads |
| Input Common-Mode Range | -0.1V to VDD – 0.8V - allows direct ground-referenced input sensing without external biasing |
| PSRR | 60–90dB - maintains stable trip points despite supply ripple in noisy DC/DC environments |
Pinout & Package
MAX9094ASD+T is housed in a 14-pin Small Outline (SO) package with standard 1.27mm pitch, JEDEC MS-012AC compliant footprint, and RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTC | Open-drain output of Comparator C - requires external pull-up for HIGH state; sinks up to 35mA |
| 2 | OUTD | Open-drain output of Comparator D - shares same drive capability and interface constraints as OUTC |
| 3 | VSS | Negative supply terminal (GND) - reference for all inputs and outputs; must be low-impedance |
| 4 | IND+ | Noninverting input of Comparator D - accepts signals within -0.1V to VDD – 0.8V range |
| 5 | INA- | Inverting input of Comparator A - differential pair node; matched to INA+ for offset minimization |
| 6 | INA+ | Noninverting input of Comparator A - primary threshold reference input for first comparator channel |
| 7 | VDD | Positive supply (1.8–5.5V) - powers all four comparators; bypass with 0.1µF ceramic capacitor |
| 8 | OUTA | Open-drain output of Comparator A - default active-low assertion; compatible with I²C bus pull-up schemes |
| 9 | INC+ | Noninverting input of Comparator C - independently configurable threshold input |
| 10 | INC- | Inverting input of Comparator C - paired with INC+; supports differential or single-ended configurations |
| 11 | IND- | Inverting input of Comparator D - matched pair with IND+; enables precise window or zero-crossing detection |
| 12 | INB+ | Noninverting input of Comparator B - second independent threshold input |
| 13 | OUTB | Open-drain output of Comparator B - electrically identical to OUTA/OUTC/OUTD |
| 14 | INB- | Inverting input of Comparator B - completes B-channel differential pair; low input bias current preserves accuracy |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends 0.1V below VSS and to VDD – 0.8V - eliminates need for input bias networks in ground-sensed applications |
| No phase reversal on overdrive | Prevents erroneous output latching when inputs exceed common-mode limits - critical for fault-detection circuits |
| Low quiescent current per comparator | 62.5–100µA/channel at +25°C - enables always-on monitoring in energy-harvesting and coin-cell devices |
| High PSRR (60–90dB) | Maintains consistent switching thresholds despite ±100mV supply ripple - reduces need for ultra-clean LDOs |
| Open-drain outputs with 35mA sink capability | Supports wired-OR logic, level translation, and direct interfacing to 1.8V/3.3V/5V digital inputs without series resistors |
Applications
| Mobile Power Management | Notebook Battery Monitoring |
|---|---|
Use Scenario: Detecting battery cell undervoltage and overvoltage conditions during charging/discharging cycles in smartphones and wearables. IC Role / Device Role / Timing Role: Quad comparator providing independent high/low threshold detection per cell, with outputs driving MCU GPIOs or dedicated fuel-gauge IC interrupts. Use Value: Enables precise 25mV-level voltage windowing using internal reference or resistor dividers - reducing BOM count vs. dedicated ADC solutions. | Use Scenario: Monitoring multiple voltage rails (VCC_CORE, VCC_IO, VBAT) in ultrabooks to trigger graceful shutdown before brownout. IC Role / Device Role / Timing Role: Four-channel threshold detector asserting separate fault flags for each rail; outputs pulled up to respective domain voltages. Use Value: Simultaneous monitoring of four rails with <100ns response ensures system stability during transient load steps and thermal throttling events. |
| Portable Medical Sensors | Industrial IoT Edge Nodes |
Use Scenario: Converting analog sensor outputs (ECG, pulse oximetry) into digital event triggers for low-power microcontrollers in handheld diagnostics. IC Role / Device Role / Timing Role: Low-voltage comparator detecting signal amplitude crossings or zero-crossings - operating directly from coin-cell supply. Use Value: 65µA/channel supply current extends battery life beyond 1 year in intermittent-sampling modes while maintaining sub-millisecond latency. | Use Scenario: Supervising 4–20mA loop integrity, thermocouple cold-junction compensation, and relay driver enable thresholds in remote sensor nodes. IC Role / Device Role / Timing Role: Quad comparator performing simultaneous analog condition checks - outputs feed FPGA logic or isolated digital inputs. Use Value: SO-14 package provides mechanical robustness and thermal stability across -40°C to +125°C industrial ambient - eliminating need for derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad open-drain comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMX339HSD/NOPB | Pin-compatible but higher supply current (350–600µA), wider offset (1–7mV), no guaranteed 1.8V operation | Legacy industrial designs requiring drop-in replacement where 1.8V support is not required | Select when backward compatibility with existing LMX339H layouts is mandatory and supply headroom >2.7V exists |
| MAX9095ASD+T | Same pinout and specs, but adds 2mV internal hysteresis - increases propagation delay by ≤10ns | Noise-prone environments with slow-moving inputs (e.g., thermistor monitoring, mechanical switch debouncing) | Choose MAX9095ASD+T only if hysteresis is required; otherwise MAX9094ASD+T offers lower delay and identical footprint |
Compared with LMX339HSD/NOPB, MAX9094ASD+T enables true 1.8V operation and cuts supply current by ~30% at 2.7V; versus MAX9095ASD+T, it trades hysteresis for 5–10ns faster response - making it optimal for timing-critical, low-noise signal conditioning.
Availability
MAX9094ASD+T is available at Aetrix Electronics and suitable for mobile communications, notebook power management, and battery-powered medical devices requiring stable component supply across automotive-grade temperature ranges.
Supply support for MAX9094ASD+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 semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, and computing markets.
The MAX909x family was designed specifically for space-constrained, low-voltage portable systems requiring fast, accurate, and power-efficient voltage comparison - targeting applications where traditional comparators fail at sub-2V operation.
FAQ
What is the minimum operating supply voltage for MAX9094ASD+T?
The MAX9094ASD+T is fully specified and guaranteed to operate down to +1.8V supply voltage across the full -40°C to +125°C temperature range. At 1.8V, typical supply current is 210–340µA for all four comparators, and propagation delay remains within 70–120ns at 100mV overdrive - enabling direct integration into single-cell lithium-polymer and coin-cell systems without voltage boosting.
Does MAX9094ASD+T include internal hysteresis?
No, MAX9094ASD+T does not include internal hysteresis. Hysteresis is present only in the MAX9095ASD+T variant (2mV typical). For noise-sensitive applications, external hysteresis must be added using two resistors in positive feedback configuration - design equations and layout guidance are provided in the MAX9094ASD+T datasheet Figure 2 and associated text.
What is the maximum sink current capability of each output in MAX9094ASD+T?
Each open-drain output of MAX9094ASD+T can sink up to 35mA while maintaining output saturation voltage ≤400mV at -40°C to +125°C (ISINK ≤ 4mA condition). At room temperature and ISINK ≤ 1mA, VSAT is typically 56mV (1.8V supply) or 120mV (5V supply), allowing direct drive of LEDs, small relays, or logic inputs without external buffers.
Can MAX9094ASD+T accept input voltages below ground?
Yes, MAX9094ASD+T supports an input common-mode voltage range extending to -0.1V below VSS (ground), verified across all supply voltages (1.8V–5.5V) and temperatures (-40°C to +125°C). This allows direct connection of slightly negative transducer outputs or AC-coupled signals without clamping diodes or level-shifting circuitry - provided differential input voltage stays within ±3.6V absolute maximum rating.
Is MAX9094ASD+T pin-compatible with LM339-based designs?
MAX9094ASD+T is pin-for-pin compatible with the LMX339/LMX339H in the 14-pin SO package, matching pin functions exactly (e.g., OUTA=Pin 8, INB-=Pin 14, VDD=Pin 7). However, unlike LM339, MAX9094ASD+T operates down to 1.8V, draws less current, and offers improved PSRR and propagation delay - making it a functional upgrade without PCB changes.
MAX9094ASD+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX9094ASD+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9094ASD+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 MAX9094ASD+T reliable?
The price and inventory of MAX9094ASD+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9094ASD+T is usually 5 days.
3.What payment methods are accepted for MAX9094ASD+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9094ASD+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9094ASD+T?
MAX9094ASD+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9094ASD+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 MAX9094ASD+T?
For technical support, including MAX9094ASD+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9094ASD+T requirements.
6.How does Aetrix verify that MAX9094ASD+T is sourced from the original manufacturer or authorized distributors?
All MAX9094ASD+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 MAX9094ASD+T meets industry standards.
7.What is the process for return or replacement of MAX9094ASD+T?
All MAX9094ASD+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9094ASD+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 MAX9094ASD+T part is unused and in its original packaging.
Return procedure for MAX9094ASD+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9094ASD+T Tags
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