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Analog Devices Inc./Maxim Integrated MAX9077ESA
- Part No.:
- MAX9077ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX9077ESA.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,069
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Product details
Overview
MAX9077ESA from Maxim Integrated is a dual, rail-to-rail input/output, ultra-low-power comparator optimized for 2.1V–5.5V single-supply operation. It delivers 580ns propagation delay with only 3µA per comparator supply current, ground-sensing inputs (–0.2V to VCC – 1.2V), and push-pull outputs capable of ±2mA drive into TTL/CMOS logic - ideal for battery-powered threshold detection in portable IR receivers and keyless entry systems.
For engineers reviewing the MAX9077ESA datasheet, MAX9077ESA pinout, MAX9077ESA application, or MAX9077ESA equivalent, this page provides verified technical context, SO-8 package mapping, real-world interface behavior, and validated alternative options for low-power, space-constrained comparator designs.
Technical Context
The MAX9077ESA implements a BiCMOS architecture with no internal differential input clamp, enabling rail-to-rail differential input voltage tolerance and eliminating phase inversion under overdrive. Its output stage uses controlled push-pull drivers to suppress shoot-through current surges during switching, maintaining stable 3µA quiescent current across dynamic transitions.
Input bias current is typically –5nA at 25°C, common-mode rejection ratio (CMRR) reaches 82dB, and power-supply rejection ratio (PSRR) is 77dB - all specified over –40°C to +85°C. The device supports continuous short-circuit fault tolerance on all pins to either rail without damage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.1V to 5.5V - enables direct integration into Li-ion, coin-cell, and 3.3V/5V logic domains without level-shifting. |
| Supply Current per Comparator | 3µA typical - allows >1-year operation on a CR2032 battery in always-on wake-up circuits. |
| Propagation Delay | 580ns at 100mV overdrive - supports reliable edge detection in 1MHz digital line receiver applications. |
| Input Common-Mode Range | –0.2V to VCC – 1.2V - permits ground-referenced sensing (e.g., battery voltage monitoring below 0V reference). |
| Output Drive Capability | Rail-to-rail swing with ±2mA load - directly interfaces with 74LVC, 74AHC, and ARM GPIO without external pull-ups. |
| Input Offset Voltage | ±8mV max - ensures sub-10mV threshold accuracy in precision window comparators. |
| Input Capacitance | 3pF - minimizes high-frequency signal coupling between IN+ and IN– in noise-sensitive sensor front-ends. |
Pinout & Package
MAX9077ESA is housed in an 8-pin SO (Small Outline) package with standard 1.27mm pitch, JEDEC MS-012AC compliant footprint, and RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Push-pull output of comparator A - sinks or sources up to 2mA; no external pull-up required for CMOS interfacing. |
| 2 | INA– | Inverting input of comparator A - accepts voltages down to –0.2V, enabling true ground-sensing capability. |
| 3 | INA+ | Noninverting input of comparator A - differential input range extends rail-to-rail without clamping diodes. |
| 4 | GND | Analog/digital ground reference - shared return path for both comparators and output drivers. |
| 5 | VCC | Positive supply pin - powers both comparators and output stages; decoupling with 10nF capacitor recommended. |
| 6 | INB+ | Noninverting input of comparator B - electrically isolated from INA+; supports independent dual-threshold detection. |
| 7 | INB– | Inverting input of comparator B - same rail-to-rail differential tolerance as INA–; no cross-channel coupling. |
| 8 | OUTB | Push-pull output of comparator B - independently driven; supports asynchronous dual-event detection (e.g., rising/falling edge triggers). |
Key Features
| Feature | Design Value |
|---|---|
| No output phase inversion under overdrive | Guarantees monotonic response when input differential exceeds 100mV - critical for reliable zero-crossing detection in analog sensors. |
| Rail-to-rail output swing | Delivers full VCC–GND logic swing into 2mA loads - eliminates need for external level translators in mixed-voltage systems. |
| Ultra-low 3µA supply current | Reduces total system standby power to <10µA in dual-comparator configurations - extends battery life in IoT endpoint nodes. |
| Ground-sensing input range | Accepts common-mode voltages down to –0.2V - enables direct connection to shunt-based current monitors or thermistor dividers referenced to system ground. |
| No differential input clamp | Permits safe differential input voltages beyond VCC or below GND - simplifies protection design in noisy automotive or industrial environments. |
Applications
| Battery Voltage Monitor | IR Signal Threshold Detector |
|---|---|
|
Use Scenario: Monitoring Li-ion cell voltage during charging/discharging to trigger low-battery alerts or cutoff. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - INA+/INA– monitor upper threshold, INB+/INB– monitor lower threshold. Use Value: 3µA quiescent current ensures <0.1% daily battery drain; rail-to-rail inputs accurately sense 2.5V–4.2V range without external resistive scaling. |
Use Scenario: Converting modulated IR carrier bursts (e.g., 38kHz) into clean digital pulses for microcontroller decoding. IC Role / Device Role / Timing Role: Single comparator (OUTA) acting as high-speed envelope detector - INB+/INB– unused or tied off. Use Value: 580ns propagation delay preserves pulse timing integrity; push-pull output drives MCU GPIO directly at 3.3V logic levels. |
| Keyless Entry RF Wake-Up | Digital Line Receiver |
|
Use Scenario: Detecting valid 125kHz LF activation field to wake a vehicle key fob from deep sleep mode. IC Role / Device Role / Timing Role: Comparator A (OUTA) triggers wake-up interrupt; comparator B (OUTB) validates signal duration via RC timing. Use Value: Ground-sensing inputs accept antenna-coupled AC signals centered at 0V; 2.1V minimum supply enables operation directly from supercapacitor backup. |
Use Scenario: Receiving RS-232 or proprietary serial data lines where signal amplitude varies between 0.5V and 4.5V. IC Role / Device Role / Timing Role: Dual comparator used for hysteresis-enhanced line reception - one channel for data, one for clock recovery. Use Value: No phase inversion ensures glitch-free sampling; 82dB CMRR rejects common-mode noise on long PCB traces or cables. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-power comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV7235M5X | Higher supply current (35µA), slower propagation (1.2µs), SC70-5 package only - no SO-8 option. | Not suitable for ultra-low-power battery systems requiring <5µA per comparator; lacks ground-sensing input range. | Select MAX9077ESA when sub-5µA operation, SO-8 layout compatibility, or –0.2V input capability are required. |
| TLV3702IDR | Lower supply current (1.8µA), but limited input range (0.2V to VCC – 0.2V); SO-8 package available. | Cannot sense signals below 0.2V - unsuitable for shunt-current or thermistor applications referencing ground. | Choose MAX9077ESA for ground-referenced threshold detection; TLV3702IDR only where absolute lowest current dominates and input range is constrained. |
Compared with LMV7235M5X and TLV3702IDR, the MAX9077ESA uniquely combines 3µA supply current, –0.2V input capability, and SO-8 packaging - making it the only option for space-constrained, ground-sensing, multi-year battery applications requiring dual comparators.
Availability
MAX9077ESA is available at Aetrix Electronics and suitable for battery-powered systems, IR receivers, keyless entry modules, and digital line receivers requiring stable component supply across extended production lifecycles.
Supply support for MAX9077ESA 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 high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer markets.
The MAX9075/MAX9077 family was designed specifically for ultra-low-power, space-constrained portable electronics - delivering precision comparison with minimal current draw and smallest possible footprint.
FAQ
What is the operating temperature range for MAX9077ESA?
The MAX9077ESA is rated for operation from –40°C to +85°C, with full electrical performance guaranteed across this industrial temperature range. Absolute maximum ratings extend to –55°C to +125°C for military-grade variants (e.g., MAX9077MSA/PR2), but the MAX9077ESA itself is qualified only to +85°C ambient.
Does MAX9077ESA require external pull-up resistors on its outputs?
No, MAX9077ESA does not require external pull-up resistors. Its outputs are push-pull, capable of actively driving high (up to VCC – 0.4V) and low (down to 0.4V) with ±2mA current. This eliminates external components for TTL/CMOS interfacing and reduces board area in compact designs.
Can MAX9077ESA inputs be driven below ground?
Yes, the MAX9077ESA supports a common-mode input voltage range extending to –0.2V, allowing safe operation with inputs referenced slightly below ground - such as in current-sense amplifier outputs or thermistor networks tied to system ground. This ground-sensing capability is explicitly guaranteed in the datasheet.
What is the maximum load capacitance supported by MAX9077ESA before propagation delay degrades significantly?
According to the MAX9077ESA datasheet, propagation delay increases from 580ns (typical, CL = 10pF) to ~1.6µs at 2000pF load capacitance. For stable timing in high-speed applications, keep load capacitance ≤100pF - achievable with short PCB traces and proper layout practices outlined in the "Board Layout and Bypassing" section.
Is MAX9077ESA pin-compatible with other dual comparators in SO-8 packages?
No, MAX9077ESA has a unique pinout: OUTA, INA–, INA+, GND, VCC, INB+, INB–, OUTB. It is not pin-compatible with industry-standard dual comparators like LM393 or TLV3702, which use different pin assignments (e.g., IN–/IN+/OUT for first comparator, VCC/GND/IN–/IN+/OUT for second). Layout redesign is required for substitution.
MAX9077ESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2.1V ~ 5.5V
- :
- 1mV @ 5V
- Voltage - Input Offset (Max):
- 0.005µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 6.6µA
- Current - Quiescent (Max):
- 82dB CMRR, 77dB PSRR
- CMRR, PSRR (Typ):
- 580ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
MAX9077ESA FAQ
1.How can I place an order for MAX9077ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9077ESA 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 MAX9077ESA reliable?
The price and inventory of MAX9077ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9077ESA is usually 5 days.
3.What payment methods are accepted for MAX9077ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9077ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9077ESA?
MAX9077ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9077ESA 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 MAX9077ESA?
For technical support, including MAX9077ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9077ESA requirements.
6.How does Aetrix verify that MAX9077ESA is sourced from the original manufacturer or authorized distributors?
All MAX9077ESA 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 MAX9077ESA meets industry standards.
7.What is the process for return or replacement of MAX9077ESA?
All MAX9077ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX9077ESA, 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 MAX9077ESA part is unused and in its original packaging.
Return procedure for MAX9077ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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