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Analog Devices Inc./Maxim Integrated MAX9094AUD+
- Part No.:
- MAX9094AUD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX9094AUD+.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:747
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Product details
Overview
The MAX9094AUD+ from Maxim Integrated is a quad, low-voltage, open-drain comparator IC in 14-pin TSSOP package, operating from +1.8V to +5.5V with guaranteed performance over -40°C to +125°C. It delivers 100ns propagation delay (at 100mV overdrive), 220–360µA supply current for all four channels, and input common-mode range extending to ground-enabling direct sensing of near-ground signals in battery-powered portable systems.
For engineers reviewing the MAX9094AUD+ datasheet, MAX9094AUD+ pinout, MAX9094AUD+ application, or MAX9094AUD+ equivalent, key selection criteria include its quad-channel open-drain output architecture, internal hysteresis-free design (unlike MAX9095), rail-to-rail input capability down to VSS, and automotive-grade temperature support without requiring external hysteresis components.
Technical Context
The MAX9094AUD+ implements four independent voltage comparators with open-drain outputs, no internal hysteresis (distinguishing it from MAX9095), and input stages that accept common-mode voltages from -0.1V below VSS to within 0.8V of VDD. Its BiCMOS process enables low input bias current (±0.0003nA typ at +25°C) and high PSRR (60–90dB).
It supports single-supply operation only, with no phase reversal under overdriven inputs and guaranteed functionality across 1.8V–5.5V supply rails. Output saturation voltage is 120mV max at 4mA sink, and input offset voltage is 0.4–7mV (typ/max) over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Quad comparator - supports four independent voltage decision functions in one IC |
| Supply Voltage Range | +1.8V to +5.5V - compatible with Li-ion, 3.3V, and 5V logic domains without level shifting |
| Propagation Delay | 70–120ns (tPHL/tPLH at 100mV overdrive) - enables reliable timing in sub-10MHz signal monitoring |
| Input Offset Voltage | 0.4mV (typ), 9mV (max over -40°C to +125°C) - ensures accurate threshold detection in precision sensing |
| Supply Current | 250–500µA (all four channels, full temp range) - ultra-low power for always-on battery monitoring |
| Output Type | Open-drain - allows wired-OR logic, flexible pull-up voltage selection, and interface with mixed-voltage systems |
| Input Common-Mode Range | -0.1V to VDD - 0.8V - enables direct ground-referenced input sensing without resistor dividers |
Pinout & Package
MAX9094AUD+ uses a 14-pin TSSOP package (package code U14+1, outline 21-0066), thermally optimized with θJA = 100.4°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTC | Comparator C open-drain output - requires external pull-up for logic-high assertion |
| 2 | OUTD | Comparator D open-drain output - independently controllable, supports multi-threshold alarm chaining |
| 3 | VSS | Negative supply terminal - must be connected to system ground; input common-mode extends to -0.1V below this pin |
| 4 | IND+ | Comparator D noninverting input - accepts signals up to VDD - 0.8V |
| 5 | INA- | Comparator A inverting input - differential pair node; matched to INA+ for offset-critical applications |
| 6 | INA+ | Comparator A noninverting input - primary reference input; used with INA- to set trip point |
| 7 | OUTA | Comparator A open-drain output - standard active-low alert output; sinks up to 35mA |
| 8 | VDD | Positive supply input - powers all four comparators; bypassing with 0.1µF capacitor required |
| 9 | INC+ | Comparator C noninverting input - enables third independent threshold comparison |
| 10 | INC- | Comparator C inverting input - paired with INC+ for differential or single-ended configuration |
| 11 | IND- | Comparator D inverting input - matches IND+ for balanced noise rejection |
| 12 | INB+ | Comparator B noninverting input - second independent threshold channel |
| 13 | OUTB | Comparator B open-drain output - fully isolated from other outputs; supports independent load driving |
| 14 | INB- | Comparator B inverting input - completes B-channel differential pair |
Key Features
| Feature | Design Value |
|---|---|
| No internal hysteresis | Enables precise, user-defined threshold control via external feedback - avoids fixed 2mV hysteresis of MAX9095 |
| Rail-to-rail input common-mode | Supports direct connection of sensors referenced to ground (e.g., battery cell monitors, thermistor dividers) |
| Automotive temperature range | Guaranteed operation from -40°C to +125°C - suitable for under-hood and industrial control environments |
| Low quiescent current | 250µA typical at +25°C (all four channels) - extends runtime in coin-cell or energy-harvesting systems |
| No phase reversal | Prevents erroneous output toggling when inputs exceed common-mode limits - critical for fault-detection circuits |
Applications
| Battery Cell Voltage Monitoring | Portable Device Power Sequencing |
|---|---|
Use Scenario: Monitoring individual Li-ion cell voltages in 2–4S battery packs to detect overvoltage/undervoltage faults before protection IC activation. IC Role / Device Role / Timing Role: Quad comparator provides simultaneous threshold evaluation for four cells using shared reference and independent inputs. Use Value: Eliminates need for four discrete comparators or microcontroller ADC polling - reduces BOM count and firmware overhead while enabling <100ns fault response. | Use Scenario: Enforcing strict power-up order across multiple rails (e.g., VCCIO before VCore) in handheld devices with tight space constraints. IC Role / Device Role / Timing Role: Each comparator channel validates one rail's presence and stability before enabling next-stage regulator via open-drain enable line. Use Value: Achieves deterministic, hardware-based sequencing without software intervention - improves boot reliability and meets JEDEC JESD22-A108 stress-test requirements. |
| Industrial Sensor Threshold Detection | USB-C Port Power Negotiation Assist |
Use Scenario: Detecting out-of-range analog sensor outputs (e.g., pressure, temperature) in factory automation nodes operating at extended temperature. IC Role / Device Role / Timing Role: Compares conditioned sensor voltage against programmable reference; open-drain outputs drive PLC input modules or local LED alerts. Use Value: Delivers -40°C to +125°C guaranteed performance with <7mV offset drift - avoids calibration drift errors seen in generic comparators. | Use Scenario: Supporting USB-C power delivery state machines by detecting CC line voltage thresholds during plug insertion and mode negotiation. IC Role / Device Role / Timing Role: Two comparator channels monitor CC1/CC2 lines for Rp/Rd presence and orientation; remaining two validate VBUS ramp rate and PDO match. Use Value: Enables hardware-accelerated PD handshake validation - reduces MCU interrupt load and ensures <1ms response to cable attach/detach events. |
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/channel), no guaranteed 1.8V operation or automotive temp support | Suitable for industrial 24V systems but not battery-powered portable designs requiring sub-2V start-up | Select LM339DR only when legacy 36V tolerance or through-hole SOIC-14 packaging is mandatory |
| TLV339IPWR | Lower supply current (38µA/channel), rail-to-rail inputs, but only dual-channel and no -40°C to +125°C guarantee | Fits compact dual-threshold needs but cannot replace MAX9094AUD+ in quad-channel automotive applications | Choose TLV339IPWR for space-constrained dual-comparator use cases where extended temperature is not required |
Compared with LM339DR and TLV339IPWR, the MAX9094AUD+ uniquely combines quad-channel density, 1.8V minimum supply, and automotive temperature grade in a 14-pin TSSOP - making it the only option for compact, battery-powered systems demanding guaranteed operation across extreme ambient conditions.
Availability
MAX9094AUD+ is available at Aetrix Electronics and suitable for battery management systems, portable device power sequencing, industrial sensor interfaces, and USB-C power negotiation assist circuits requiring stable component supply across automotive and industrial temperature ranges.
Supply support for MAX9094AUD+ 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 communications markets.
The MAX909x family was designed specifically for low-voltage, space-constrained portable and automotive applications requiring fast, precise, and robust voltage comparison without external hysteresis components.
FAQ
What is the maximum sink current capability of each output in MAX9094AUD+?
Each open-drain output of the MAX9094AUD+ can sink up to 35mA when VOUT ≤ 1.5V, as specified in the DC Electrical Characteristics table for 5.0V operation. This allows direct driving of LEDs, small relays, or logic inputs with appropriate pull-up resistors - ensuring reliable interfacing without external buffer transistors in most portable applications.
Does MAX9094AUD+ include internal hysteresis like MAX9095AUD+?
No, MAX9094AUD+ does not include internal hysteresis. Unlike MAX9095AUD+, which integrates 2mV of hysteresis for noise immunity, the MAX9094AUD+ is hysteresis-free to allow precise, externally controlled threshold setting. This makes MAX9094AUD+ ideal for applications requiring exact trip points, such as calibrated sensor monitoring or multi-level voltage detection with custom feedback networks.
Can MAX9094AUD+ operate from a 1.8V supply across the full -40°C to +125°C range?
Yes, MAX9094AUD+ is fully specified and guaranteed to operate from +1.8V to +5.5V across the entire -40°C to +125°C temperature range. The datasheet confirms functional performance including propagation delay, input offset, and supply current at 1.8V under extreme temperature conditions - making it suitable for ultra-low-voltage battery-powered systems deployed in harsh environments.
What is the input common-mode voltage range for MAX9094AUD+?
The input common-mode voltage range for MAX9094AUD+ extends from -0.1V below VSS to VDD - 0.8V. This rail-to-rail input capability - especially the ability to sense signals at or slightly below ground - enables direct interfacing with current-sense amplifiers, battery cell monitors, and ground-referenced sensors without level-shifting circuitry, simplifying design and reducing component count.
Is MAX9094AUD+ pin-compatible with any industry-standard comparators?
Yes, MAX9094AUD+ is pin-for-pin compatible with the LMX339 and LMX339H quad comparators in the 14-pin TSSOP and SO packages. This allows drop-in replacement in existing designs using those parts, delivering improved specifications including lower supply current, faster propagation delay, wider supply voltage range, and guaranteed automotive temperature operation - without requiring PCB layout changes.
MAX9094AUD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 14-TSSOP (0.173", 4.40mm 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-TSSOP
MAX9094AUD+ FAQ
1.How can I place an order for MAX9094AUD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9094AUD+ 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 MAX9094AUD+ reliable?
The price and inventory of MAX9094AUD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9094AUD+ is usually 5 days.
3.What payment methods are accepted for MAX9094AUD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9094AUD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9094AUD+?
MAX9094AUD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9094AUD+ 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 MAX9094AUD+?
For technical support, including MAX9094AUD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9094AUD+ requirements.
6.How does Aetrix verify that MAX9094AUD+ is sourced from the original manufacturer or authorized distributors?
All MAX9094AUD+ 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 MAX9094AUD+ meets industry standards.
7.What is the process for return or replacement of MAX9094AUD+?
All MAX9094AUD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX9094AUD+, 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 MAX9094AUD+ part is unused and in its original packaging.
Return procedure for MAX9094AUD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9094AUD+ 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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