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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:2,973
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Product details
Overview
MAX9077ESA+ from Maxim Integrated is a dual ultra-low-power comparator optimized for single-supply portable systems. It delivers 580ns propagation delay at just 3µA per comparator, operates from 2.1V to 5.5V, features rail-to-rail outputs driving up to 2mA, and supports ground-sensing inputs with -0.2V to VCC–1.2V common-mode range - ideal for battery-powered threshold detection in IR receivers and keyless entry systems.
For engineers reviewing the MAX9077ESA+ datasheet, MAX9077ESA+ pinout, MAX9077ESA+ application, or MAX9077ESA+ equivalent, this page provides verified package mapping (8-pin SO), confirmed dual-comparator identity, validated rail-to-rail output behavior, exact input offset voltage (±8mV max), and real-world design context for low-voltage portable signal conditioning.
Technical Context
The MAX9077ESA+ integrates two independent comparators sharing a single 2.1V–5.5V supply, each with push-pull output stage enabling true rail-to-rail swing under 2mA load. Its input stage lacks differential clamping, permitting rail-to-rail differential input voltage while maintaining -0.2V to VCC–1.2V common-mode range - critical for ground-referenced sensing.
Propagation delay is tightly specified at 580ns (typ) with <250ns rise/fall times (CL = 10pF, 100mV overdrive), and supply current remains stable across temperature (-40°C to +85°C) and output state (high/low), with no shoot-through surge due to internal current-limiting design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.1V to 5.5V - enables direct operation from single Li-ion cell (3.0–3.7V) or 3.3V/5V rails without regulation. |
| Supply Current per Comparator | 3µA (typ) - allows continuous monitoring in multi-year battery applications (e.g., remote sensors). |
| Propagation Delay | 580ns (typ) - supports fast edge detection in digital line receivers and pulse-width discriminators. |
| Input Offset Voltage | ±8mV (max) - ensures reliable threshold discrimination down to ~10mV hysteresis without trimming. |
| Common-Mode Input Range | -0.2V to VCC–1.2V - permits direct connection to 0V-referenced signals (e.g., battery voltage monitors). |
| Rail-to-Rail Output Swing | VOH ≥ VCC–0.4V, VOL ≤ 0.4V @ 2mA - guarantees TTL/CMOS logic compatibility across full supply range. |
| Input Bias Current | -20nA to +10nA - minimizes loading error on high-impedance sensor sources (e.g., thermistors, photodiodes). |
Pinout & Package
MAX9077ESA+ is housed in an 8-pin SO (Small Outline) package with standard 150mil width and 1.27mm pitch, compatible with IPC-7351B SOIC-8 land pattern (Maxim land pattern no. 90-0096).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Push-pull output of Comparator A - drives logic loads directly; no external pull-up required. |
| 2 | INA− | Inverting input of Comparator A - accepts signals down to -0.2V; no clamping diode to VCC. |
| 3 | INA+ | Noninverting input of Comparator A - supports ground-sensing; common-mode range includes 0V. |
| 4 | GND | Analog/digital ground reference - shared return for both comparators and output stages. |
| 5 | VCC | Positive supply pin - powers both comparators and output drivers; bypass with 10nF capacitor. |
| 6 | INB+ | Noninverting input of Comparator B - electrically identical to INA+; supports independent thresholds. |
| 7 | INB− | Inverting input of Comparator B - unclamped, rail-to-rail differential capability same as INA−. |
| 8 | OUTB | Push-pull output of Comparator B - fully independent of OUTA; sinks/sources 2mA rail-to-rail. |
Key Features
| Feature | Design Value |
|---|---|
| No output phase inversion | Remains stable even when inputs are overdriven beyond common-mode limits - eliminates false triggering in noisy environments. |
| No differential input clamp | Allows ±VCC differential voltage without damage or latch-up - simplifies interfacing to AC-coupled or floating sources. |
| Rail-to-rail output swing | Drives 2mA loads to within 400mV of rails at 2.1V supply - ensures noise margin >600mV for 1.8V logic interfaces. |
| Ultra-low dynamic supply current | Stable 3µA per comparator during switching - avoids current spikes that disrupt sensitive analog supplies. |
| Ground-sensing input capability | Common-mode range extends to -0.2V - enables direct monitoring of battery voltage or current-sense shunts referenced to system ground. |
Applications
| Battery Voltage Monitor | IR Signal Threshold Detector |
|---|---|
|
Use Scenario: Monitoring Li-ion cell voltage during discharge to trigger low-battery warning before cutoff. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel for upper threshold (3.6V), one for lower (3.0V). Use Value: 3µA quiescent current extends battery life by >2 years in always-on monitoring; ground-sensing inputs eliminate level-shifting circuitry. |
Use Scenario: Converting modulated IR carrier bursts into clean digital pulses for microcontroller decoding. IC Role / Device Role / Timing Role: High-speed comparator with hysteresis rejecting ambient light noise while preserving 38kHz carrier edges. Use Value: 580ns propagation delay preserves pulse timing integrity; rail-to-rail output directly clocks MCU GPIO with no external logic. |
| Keyless Entry RF Receiver Front-End | Digital Line Receiver (RS-232/485) |
|
Use Scenario: Detecting valid OOK-modulated RF packets from car fob transmitters in automotive body control modules. IC Role / Device Role / Timing Role: Comparator converting envelope-detected RF signal to digital baseband; second channel used for automatic gain control threshold. Use Value: -0.2V to VCC–1.2V input range accommodates envelope detector DC offset; 2.1V operation enables direct 3.3V MCU interface. |
Use Scenario: Receiving TTL-level serial data from industrial sensors over long cables with EMI coupling. IC Role / Device Role / Timing Role: Dual comparator implementing differential receiver with hysteresis - one for data, one for clock recovery. Use Value: 8-pin SO package fits compact PCB layouts; 2mA output drive sustains signal integrity over 100Ω trace impedance without buffer. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV7235M5X | Higher supply current (35µA vs. 3µA); faster propagation (50ns) but incompatible low-power requirement. | Unsuitable for multi-year battery operation; better for high-speed, AC-coupled signal paths. | Select only if speed >500ns is critical and power budget allows 10× higher current. |
| TLV3702IDR | Lower input offset (±3.5mV), wider supply range (1.8V–16V), but 800ns propagation delay and 850nA bias current. | Preferred for precision thresholding where offset dominates error, not for timing-critical edge detection. | Choose when accuracy outweighs speed; avoid when 580ns delay or sub-µA standby is mandatory. |
Compared with LMV7235M5X and TLV3702IDR, MAX9077ESA+ uniquely balances ultra-low 3µA supply current, 580ns speed, and ground-sensing capability - making it irreplaceable in space-constrained, long-life portable systems requiring both precision and responsiveness.
Availability
MAX9077ESA+ is available at Aetrix Electronics and suitable for battery-powered systems, IR receivers, keyless entry systems, and digital line receivers requiring stable component supply, RoHS-compliant packaging, and guaranteed -40°C to +85°C operation.
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) designs precision analog, mixed-signal, and power-management ICs for industrial, medical, and consumer applications.
The MAX9075/MAX9077 family targets ultra-low-power portable electronics, delivering high-speed comparison with minimal supply current - specifically engineered for battery longevity in always-on sensing and wireless communication front-ends.
FAQ
What is the maximum operating supply voltage for MAX9077ESA+?
The absolute maximum supply voltage for MAX9077ESA+ is 6V, but its specified operating range is 2.1V to 5.5V. Operation above 5.5V risks permanent damage, while operation below 2.1V may cause unreliable output switching. The MAX9077ESA+ is characterized and guaranteed across the full -40°C to +85°C temperature range within this 2.1V–5.5V window.
Does MAX9077ESA+ support rail-to-rail input common-mode voltage?
No - MAX9077ESA+ supports a common-mode input range of -0.2V to VCC–1.2V, not full rail-to-rail. However, this range explicitly includes ground (0V), enabling true ground-sensing operation. The absence of input clamping diodes allows differential voltages beyond the rails, but individual inputs must stay within the specified common-mode bounds to ensure correct functionality.
Can MAX9077ESA+ drive a 10kΩ load directly?
Yes - MAX9077ESA+ can drive a 10kΩ load with full rail-to-rail swing. Its output stage is rated for 2mA sink/source, meaning it easily handles 0.5mA at 5V (5V/10kΩ). Even at minimum 2.1V supply, 2.1V/10kΩ = 210µA remains well within the 2mA capability, ensuring robust logic-level output without external buffering.
Is MAX9077ESA+ pin-compatible with other dual comparators in SO-8 packages?
No - MAX9077ESA+ uses a proprietary pinout: OUTA, INA−, INA+, GND, VCC, INB+, INB−, OUTB. This differs from industry-standard SO-8 dual comparators like LM393 (which places GND at Pin 4 and VCC at Pin 8). Direct replacement requires PCB layout revision; the MAX9077ESA+ pin configuration is fixed per Maxim's datasheet Figure "Pin Configurations (continued)".
What is the typical input bias current of MAX9077ESA+ at room temperature?
The typical input bias current of MAX9077ESA+ at +25°C is -5nA, with a guaranteed range of -20nA to +10nA across -40°C to +85°C. This low, predictable bias current minimizes voltage error across high-impedance sources (e.g., 1MΩ thermistor networks), contributing to stable threshold accuracy without calibration.
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:
- Active
- 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.
MAX9077ESA+ Tags
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LM393DT
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