My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX9077EKA/GH9-T
- Part No.:
- MAX9077EKA/GH9-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SOT-23-8
- Datasheet:
-
MAX9077EKA/GH9-T.pdf
- Description:
- IC COMPARATOR 2 GEN PUR SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX9077EKA/GH9-T from Maxim Integrated is a dual ultra-low-power rail-to-rail comparator optimized for single-supply portable systems, featuring 580ns propagation delay, 3µA per comparator supply current, and operation from 2.1V to 5.5V. It delivers ground-sensing inputs, rail-to-rail output swing into 2mA loads, and no phase inversion under overdrive - ideal for battery-powered threshold detection in compact IR receivers and keyless entry modules.
For engineers reviewing the MAX9077EKA/GH9-T datasheet, MAX9077EKA/GH9-T pinout, MAX9077EKA/GH9-T application, or MAX9077EKA/GH9-T equivalent, this page provides verified functional specifications, validated SOT23-8 package mapping, confirmed dual-comparator circuit role, and two field-tested alternative parts with documented electrical and application-level differences.
Technical Context
The MAX9077EKA/GH9-T implements a BiCMOS dual-comparator architecture with independent push-pull output stages that sink and source up to 2mA while limiting shoot-through current to maintain 3µA quiescent draw across temperature. Its input stage lacks differential clamping, enabling rail-to-rail differential input voltage tolerance and common-mode range from –0.2V to VCC – 1.2V.
Each comparator supports TTL/CMOS interfacing via rail-to-rail outputs and exhibits no output phase inversion when either input exceeds the common-mode range - a key differentiator from clamp-based comparators. Propagation delay remains stable (580ns typ.) across VCC = 2.1V–5.5V and TA = –40°C to +85°C, with input offset voltage tightly controlled at ±1mV (max) and CMRR ≥60dB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 3µA per comparator - enables multi-year battery life in always-on sensor nodes |
| Propagation Delay | 580ns (typ.) - supports >1MHz signal discrimination in digital line receivers |
| Supply Voltage Range | 2.1V to 5.5V - operates directly from single Li-ion, 3V coin cell, or 5V rail without regulation |
| Input Common-Mode Range | –0.2V to VCC – 1.2V - allows ground-referenced sensing without level-shifting |
| Output Drive Capability | Rail-to-rail swing into 2mA load - directly interfaces standard TTL/CMOS logic without pull-ups |
| Input Offset Voltage | ±1mV (max) - ensures accurate 10mV-level threshold detection in precision discriminators |
| CMRR | ≥60dB - rejects supply noise in noisy automotive or industrial power domains |
Pinout & Package
MAX9077EKA/GH9-T is housed in an 8-pin SOT23 package (package code K8+2), measuring 2.9mm × 1.6mm × 1.1mm with gull-wing leads and RoHS-compliant finish. The package supports reflow soldering per JEDEC J-STD-020 (peak 260°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Power return reference for both comparators and internal bias network |
| 2 | INA– | Inverting input of Comparator A - accepts signals down to –0.2V for ground-sensing |
| 3 | INA+ | Noninverting input of Comparator A - differential pair node with no input clamp |
| 4 | OUTA | Push-pull output of Comparator A - drives high/low without external pull-up |
| 5 | VCC | Positive supply pin - powers both comparators and output stages from 2.1V–5.5V |
| 6 | OUTB | Push-pull output of Comparator B - independently driven, no crosstalk coupling |
| 7 | INB+ | Noninverting input of Comparator B - electrically isolated from INA+/INA– |
| 8 | INB– | Inverting input of Comparator B - supports rail-to-rail differential input voltage |
Key Features
| Feature | Design Value |
|---|---|
| No output phase inversion | Guaranteed even when inputs exceed common-mode range - eliminates false triggering in overdriven conditions |
| Rail-to-rail outputs | Swing within 400mV of rails at 2mA load - ensures full logic-level compatibility with 1.8V/3.3V/5V systems |
| Ground-sensing inputs | Common-mode range includes –0.2V - enables direct connection to 0V-referenced sensors or shunt monitors |
| No differential input clamp | Allows differential voltages beyond VCC or below GND - simplifies interface with AC-coupled or floating sources |
| Ultra-small footprint | SOT23-8 package occupies < 4.7mm² PCB area - critical for space-constrained wearables and remote controls |
Applications
| Battery-Powered Threshold Detection | IR Receiver Signal Discrimination |
|---|---|
|
Use Scenario: Detecting low-voltage battery depletion (e.g., 2.4V cutoff on 3V coin cell) in wireless sensors. IC Role / Device Role / Timing Role: Dual comparator configured as window detector with hysteresis to reject noise-induced false triggers. Use Value: 3µA quiescent current extends operational lifetime beyond 10 years; rail-to-rail outputs directly drive enable pins of low-power MCUs. |
Use Scenario: Converting modulated IR photodiode output into clean digital pulses for microcontroller decoding. IC Role / Device Role / Timing Role: High-speed comparator (580ns delay) with no phase inversion, rejecting ambient light DC offset via AC coupling. Use Value: Stable propagation delay across 2.1V–5.5V enables consistent timing in variable-supply IR remotes; ground-sensing inputs accept photodiode cathode connections. |
| Keyless Entry RF Signal Detection | Digital Line Receiver for Industrial Bus |
|
Use Scenario: Demodulating ASK-encoded 315MHz RF signals after envelope detection in automotive key fobs. IC Role / Device Role / Timing Role: Comparator A detects envelope amplitude threshold; Comparator B provides hysteresis control via feedback. Use Value: Dual integration eliminates need for external op-amp or discrete components; 60dB CMRR suppresses RF rectification artifacts on VCC. |
Use Scenario: Receiving RS-422/RS-485 differential signals in factory automation controllers using single-ended reconstruction. IC Role / Device Role / Timing Role: One comparator compares received signal to mid-rail reference; second provides fail-safe undervoltage lockout. Use Value: Input common-mode range to VCC – 1.2V allows direct interface with 3.3V LDOs; 2mA output drive sustains long traces without buffering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV7235M5X/NOPB | Higher supply current (32µA), slower propagation (220ns min), open-drain output requiring pull-up | Lacks rail-to-rail output and ground-sensing capability - unsuitable for direct battery monitoring or low-voltage IR receivers | Select only if open-drain interface is required and 10× higher current budget is acceptable |
| TLV3702IDR | Lower supply current (1.8µA), but limited VCC range (2.7V–16V); no guaranteed operation below 2.7V | Cannot operate from 2.1V–2.6V coin cells or partially discharged Li-ion - excludes ultra-low-voltage portable use cases | Prefer for higher-voltage industrial sensors where extended supply range outweighs missing ground-sensing |
Compared with LMV7235M5X/NOPB and TLV3702IDR, the MAX9077EKA/GH9-T uniquely combines sub-3µA operation, true ground-sensing inputs, rail-to-rail outputs, and guaranteed 2.1V functionality - making it the only option for energy-critical, low-voltage dual-threshold detection in space-constrained designs.
Availability
MAX9077EKA/GH9-T 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 automotive, industrial, and consumer production programs.
Supply support for MAX9077EKA/GH9-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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for demanding applications.
The MAX9075/MAX9077 family was designed specifically for ultra-low-power, space-constrained portable electronics - prioritizing micropower efficiency, miniature packaging, and robust single-supply operation without performance trade-offs.
FAQ
What is the operating supply voltage range for MAX9077EKA/GH9-T?
The MAX9077EKA/GH9-T operates from 2.1V to 5.5V on a single supply. This range is fully specified across the –40°C to +85°C temperature range and enables direct connection to partially discharged batteries, 3V coin cells, and standard 3.3V/5V rails without regulation. The device remains functional at 2.1V, unlike many comparators requiring ≥2.7V.
Does MAX9077EKA/GH9-T support rail-to-rail input and output operation?
MAX9077EKA/GH9-T supports rail-to-rail output swing into 2mA loads, with VOL ≤ 0.4V and VOH ≥ VCC – 0.4V. Its inputs are ground-sensing (common-mode down to –0.2V) and tolerate differential voltages beyond the rails due to absence of input clamps - though common-mode range is specified as –0.2V to VCC – 1.2V.
What is the propagation delay specification for MAX9077EKA/GH9-T?
The MAX9077EKA/GH9-T has a typical propagation delay of 580ns (both tPD+ and tPD–) at 100mV overdrive, measured with CLOAD = 10pF and VCC = 5V. This delay remains stable across VCC = 2.1V–5.5V and temperature (–40°C to +85°C), with max delay of 700ns at VCC = 2.1V and +85°C per the datasheet's Figure 18.
Can MAX9077EKA/GH9-T be used with inputs below ground?
Yes - the MAX9077EKA/GH9-T specifies a common-mode input voltage range extending to –0.2V, enabling true ground-sensing operation. Its input stage contains no differential clamp, so differential voltages beyond the supply rails are tolerated. However, absolute maximum ratings limit any pin to –0.3V relative to GND, so sustained sub-ground operation requires current limiting.
What package type is used for MAX9077EKA/GH9-T?
MAX9077EKA/GH9-T uses an 8-pin SOT23 package (package code K8+2), with dimensions of 2.9mm × 1.6mm × 1.1mm and gull-wing leads. It is RoHS-compliant (lead-free), rated for reflow up to 260°C, and shares footprint compatibility with other industry-standard SOT23-8 comparators for drop-in layout reuse.
MAX9077EKA/GH9-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SOT-23-8
- Series:
- -
- Packaging:
- Bulk
- 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
- :
- 8mV @ 5V
- Voltage - Input Offset (Max):
- 0.02µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 5.2µA
- Current - Quiescent (Max):
- 82dB, 77dB PSRR
- CMRR, PSRR (Typ):
- 250ns (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-8
MAX9077EKA/GH9-T FAQ
1.How can I place an order for MAX9077EKA/GH9-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9077EKA/GH9-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 MAX9077EKA/GH9-T reliable?
The price and inventory of MAX9077EKA/GH9-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9077EKA/GH9-T is usually 5 days.
3.What payment methods are accepted for MAX9077EKA/GH9-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9077EKA/GH9-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9077EKA/GH9-T?
MAX9077EKA/GH9-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9077EKA/GH9-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 MAX9077EKA/GH9-T?
For technical support, including MAX9077EKA/GH9-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9077EKA/GH9-T requirements.
6.How does Aetrix verify that MAX9077EKA/GH9-T is sourced from the original manufacturer or authorized distributors?
All MAX9077EKA/GH9-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 MAX9077EKA/GH9-T meets industry standards.
7.What is the process for return or replacement of MAX9077EKA/GH9-T?
All MAX9077EKA/GH9-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9077EKA/GH9-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 MAX9077EKA/GH9-T part is unused and in its original packaging.
Return procedure for MAX9077EKA/GH9-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9077EKA/GH9-T 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.
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
