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Texas Instruments LMC6772BIM/NOPB
- Part No.:
- LMC6772BIM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6772BIM/NOPB.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LMC6772BIM/NOPB from Texas Instruments is a dual micropower rail-to-rail input CMOS comparator with open-drain output, designed for ultra-low-power sensing and threshold detection in battery-powered systems. It delivers 10 μA max supply current, operates from 2.7 V to 15 V, supports rail-to-rail input common-mode voltage range exceeding both supply rails, and features 420 ns propagation delay at 5 V with 100 mV overdrive - enabling precise, low-energy signal conditioning in portable metering and handheld electronics.
For engineers reviewing the LMC6772BIM/NOPB datasheet, LMC6772BIM/NOPB pinout, LMC6772BIM/NOPB application, or LMC6772BIM/NOPB equivalent, key selection considerations include its micropower operation (≤10 μA), wide supply range (2.7–15 V), rail-to-rail input capability, open-drain output for wired-OR logic and flexible pull-up voltage selection up to 15 V, and guaranteed −40°C to +85°C operation.
Technical Context
The LMC6772BIM/NOPB integrates two independent comparators sharing no internal biasing or timing resources, each with rail-to-rail input stages capable of accepting signals beyond V− and V+ by up to 200 mV. Its CMOS input stage draws only 0.02 pA typical input current and achieves 75 dB common-mode rejection, enabling direct sensor interfacing without external amplification or level-shifting.
Each comparator employs an open-drain NMOS output stage rated for 40 mA short-circuit protection and compatible with pull-up voltages up to 15 V - decoupling output logic levels from the device's own supply. Propagation delay is characterized across temperature and supply (e.g., 420 ns at 5 V, 100 mV overdrive, 25°C) and remains stable under low-voltage operation down to 2.7 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 10 μA max per comparator - enables multi-year battery life in always-on monitoring circuits. |
| Supply Voltage Range | 2.7 V to 15 V - supports single-cell Li-ion, 3.3 V/5 V logic, and industrial 12 V rails without external regulation. |
| Input Common-Mode Range | Exceeds V− by 0.2 V and V+ by 0.3 V - allows direct sensing of ground-referenced or rail-referenced signals without clamping diodes. |
| Propagation Delay | 420 ns at 5 V, 100 mV overdrive - provides fast response for RC timers and pulse-width detection in portable devices. |
| Output Type | Open-drain NMOS - enables wired-OR logic, level translation to any ≤15 V rail, and compatibility with I²C-style bus topologies. |
| Input Offset Voltage | 8 mV max (LMC6772BI grade) - ensures reliable threshold detection in precision window comparators and zero-crossing detectors. |
| ESD Tolerance | 1.5 kV HBM on outputs, 2 kV on inputs - meets standard handling requirements for assembly in non-ESD-controlled environments. |
Pinout & Package
LMC6772BIM/NOPB is housed in an 8-pin SOIC (D) package measuring 3.91 mm × 4.90 mm, with standard JEDEC MS-012AC outline and RoHS-compliant NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Comparator 1 Output | Open-drain NMOS drain - requires external pull-up; sinks up to 40 mA; logic high defined by pull-up rail. |
| 2 | Comparator 1 Inverting Input | Differential input node - accepts voltages from −0.2 V to V+ + 0.3 V; 0.02 pA input bias enables high-impedance sensor interfaces. |
| 3 | Comparator 1 Non-Inverting Input | Differential input node - identical common-mode range and bias as Pin 2; used for reference or signal routing in window configurations. |
| 4 | Ground (V−) | Negative supply terminal - serves as return path for both comparators and output sink current; must be low-impedance. |
| 5 | Comparator 2 Non-Inverting Input | Independent input for second comparator - supports dual-threshold detection or hysteresis feedback without shared nodes. |
| 6 | Comparator 2 Inverting Input | Independent input for second comparator - enables separate signal/reference paths for multivibrator or alarm-pair designs. |
| 7 | Comparator 2 Output | Open-drain NMOS drain - electrically isolated from Pin 1; supports independent pull-up or wired-OR with Pin 1. |
| 8 | Positive Supply (V+) | Power rail for both comparators - supplies internal bias and defines upper common-mode limit; tolerant to 16 V absolute max. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Accepts signals 200 mV below V− and 300 mV above V+ - eliminates need for input clamping or level-shifting in single-supply systems. |
| Open-drain output architecture | Enables logic-level translation to any rail ≤15 V and wired-OR summation of multiple comparators - simplifies bus arbitration and alarm aggregation. |
| 2.7 V minimum operating voltage | Guarantees full functionality with single Li-ion or alkaline cells - extends usable battery range and avoids brown-out resets in portable gear. |
| 40 mA short-circuit protection | Limits output fault current without latch-up - permits safe use in unbuffered sensor interface or relay driver applications with transient loads. |
| 75 dB CMRR at 25°C | Restricts input offset shift to <1 mV over full common-mode range - ensures stable trip points in noisy power supply monitoring circuits. |
Applications
| Portable Power Monitoring | Handheld Instrument Threshold Detection |
|---|---|
|
Use Scenario: Real-time battery voltage supervision in medical glucose meters and portable oscilloscopes, triggering low-battery alerts before critical shutdown. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel monitors upper threshold (e.g., 4.2 V), the other lower (e.g., 3.0 V). Use Value: 10 μA total quiescent current extends battery life by months; rail-to-rail inputs directly sense cell voltage without resistive dividers or op-amp buffers. |
Use Scenario: Signal amplitude validation in handheld multimeters and thermal imagers, where analog front-end outputs must exceed minimum detectable levels. IC Role / Device Role / Timing Role: Single comparator comparing sensor output against precision reference - triggers ADC sampling or display update on valid signal presence. Use Value: 0.02 pA input bias prevents loading of high-impedance transducer outputs; 420 ns delay ensures timely response to fast-rising test signals. |
| RC-Based Timing Circuits | Alarm & Monitoring Systems |
|
Use Scenario: Programmable one-shot and astable multivibrators in battery-powered smoke detectors and timer switches, generating precise delays from passive R-C networks. IC Role / Device Role / Timing Role: Comparator with hysteresis feedback - converts exponential RC ramp into clean digital pulses with controllable duty cycle. Use Value: Open-drain output allows direct connection to RC network without level-shifting; propagation delay stability over 2.7–15 V ensures consistent timing across battery discharge. |
Use Scenario: Multi-zone intrusion detection in smart home hubs, where door/window sensors, PIR motion outputs, and temperature thresholds feed independent alarm conditions. IC Role / Device Role / Timing Role: Dual comparator implementing wired-OR alarm bus - each channel monitors a distinct sensor; outputs tied to common pull-up generate unified interrupt. Use Value: Independent open-drain outputs enable hardware OR-ing without additional logic; −40°C to +85°C rating ensures reliability in uncontrolled indoor environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC6772AIMX/NOPB | Same SOIC-8 package and pinout; tighter input offset voltage (5 mV max vs. 8 mV) and lower input bias current (0.01 pA typ). | Better suited for precision window comparators requiring sub-10 mV trip accuracy, such as high-resolution data acquisition front-ends. | Select LMC6772AIMX/NOPB when offset drift and bias current are critical; LMC6772BIM/NOPB remains optimal for cost-sensitive, general-purpose threshold detection. |
| TLV3702IDR | Lower supply current (1.8 μA max), but narrower supply range (2.7–16 V), no rail-to-rail input (VCM = V− to V+ − 0.1 V), and push-pull output. | Preferred for ultra-low-power wake-up circuits where output drive strength matters more than input range flexibility. | Choose TLV3702IDR only if micropower priority outweighs rail-to-rail input and open-drain versatility; LMC6772BIM/NOPB offers broader analog interface capability. |
Compared with LMC6772AIMX/NOPB, LMC6772BIM/NOPB trades minor offset tolerance for broader availability and cost efficiency; versus TLV3702IDR, it sacrifices some quiescent current reduction to retain rail-to-rail input operation and open-drain configurability essential for bus-based monitoring.
Availability
LMC6772BIM/NOPB is available at Aetrix Electronics and suitable for portable medical devices, handheld test equipment, and battery-powered alarm systems requiring stable component supply across extended production lifecycles.
Supply support for LMC6772BIM/NOPB 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
Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions, with over 90 years of innovation in precision analog ICs and power management technologies.
The LMC6772BIM/NOPB belongs to TI's micropower comparator product line, engineered specifically for energy-constrained applications where rail-to-rail input range, open-drain flexibility, and sub-10 μA quiescent current are mandatory design requirements.
FAQ
What is the maximum supply voltage for LMC6772BIM/NOPB?
The absolute maximum supply voltage (V+ − V−) for LMC6772BIM/NOPB is 16 V. Operation is specified from 2.7 V to 15 V; exceeding 15 V may compromise long-term reliability or parametric performance. The device's open-drain outputs tolerate pull-up voltages up to 15 V regardless of its own supply, making LMC6772BIM/NOPB suitable for mixed-rail systems.
Does LMC6772BIM/NOPB support rail-to-rail input operation?
Yes, LMC6772BIM/NOPB supports true rail-to-rail input operation: its common-mode voltage range extends 0.2 V below V− and 0.3 V above V+ at 25°C. This allows direct interfacing with ground-referenced sensors or signals near the supply rails without external level-shifting circuitry - a key enabler for single-supply battery-powered designs using LMC6772BIM/NOPB.
What is the propagation delay of LMC6772BIM/NOPB at 2.7 V supply?
At V+ = 2.7 V, 100 mV input overdrive, and 25°C, the LMC6772BIM/NOPB exhibits tPLH = 420 ns and tPHL = 450 ns. These values are fully characterized and guaranteed across the −40°C to +85°C operating temperature range, ensuring predictable timing behavior in low-voltage RC timers and pulse-detection circuits built with LMC6772BIM/NOPB.
Can LMC6772BIM/NOPB outputs be wired together?
Yes, the open-drain outputs of LMC6772BIM/NOPB (Pins 1 and 7) can be safely wired together to implement hardware OR logic - for example, in multi-sensor alarm buses. A single external pull-up resistor to any voltage ≤15 V completes the configuration. This feature is intrinsic to LMC6772BIM/NOPB's NMOS output stage and requires no additional components.
Is LMC6772BIM/NOPB qualified for automotive applications?
No, LMC6772BIM/NOPB is rated for −40°C to +85°C and is not AEC-Q200 qualified. For automotive use, TI offers the LMC6772QMM/NOPB variant, which is AEC-Q200 qualified and specified from −40°C to +125°C. LMC6772BIM/NOPB remains appropriate for industrial, portable, and consumer applications where extended temperature range is not required.
LMC6772BIM/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 15V, ±1.35V ~ 7.5V
- :
- 15mV @ 5V
- Voltage - Input Offset (Max):
- 0.04pA @ 5V
- Current - Input Bias (Max):
- 30mA
- Current - Output (Typ):
- 20µA
- Current - Quiescent (Max):
- 75dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 10µs
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
LMC6772BIM/NOPB FAQ
1.How can I place an order for LMC6772BIM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6772BIM/NOPB 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 LMC6772BIM/NOPB reliable?
The price and inventory of LMC6772BIM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6772BIM/NOPB is usually 5 days.
3.What payment methods are accepted for LMC6772BIM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6772BIM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6772BIM/NOPB?
LMC6772BIM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6772BIM/NOPB 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 LMC6772BIM/NOPB?
For technical support, including LMC6772BIM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6772BIM/NOPB requirements.
6.How does Aetrix verify that LMC6772BIM/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC6772BIM/NOPB 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 LMC6772BIM/NOPB meets industry standards.
7.What is the process for return or replacement of LMC6772BIM/NOPB?
All LMC6772BIM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC6772BIM/NOPB, 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 LMC6772BIM/NOPB part is unused and in its original packaging.
Return procedure for LMC6772BIM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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