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Texas Instruments LMC6772BIMX/NOPB
- Part No.:
- LMC6772BIMX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6772BIMX/NOPB.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LMC6772BIMX/NOPB from Texas Instruments is a dual micropower rail-to-rail input CMOS comparator with open-drain output, designed for ultra-low-power battery-operated systems. It delivers 10 μA max supply current per comparator, operates from 2.7 V to 15 V, and supports rail-to-rail input common-mode voltage range exceeding both supply rails - enabling direct sensing near ground or V+ in single-supply applications such as portable metering and handheld electronics.
For engineers reviewing the LMC6772BIMX/NOPB datasheet, LMC6772BIMX/NOPB pinout, LMC6772BIMX/NOPB application, or LMC6772BIMX/NOPB equivalent, key selection considerations include its 420 ns propagation delay at 5 V/100 mV overdrive, ±30 mA output short-circuit rating, −40°C to +85°C operating temperature, SOIC-8 package, and compatibility with wired-OR logic level shifting across mixed-voltage domains.
Technical Context
The LMC6772BIMX/NOPB integrates two independent high-impedance CMOS comparators with rail-to-rail input stages and uncommitted NMOS open-drain outputs. Its input stage achieves 0.02 pA typical input bias current and 75 dB common-mode rejection, enabling precision threshold detection without external biasing in sensor interfaces.
Each comparator features internal power-on reset and ESD protection (1.5 kV HBM on outputs), with propagation delay tightly specified across 2.7 V–15 V supply range and temperature extremes. The open-drain architecture allows flexible pull-up to any voltage ≤15 V - decoupling output logic level from comparator supply - and supports multi-comparator wired-OR configurations without external diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | Max 20 μA per comparator at 25°C - enables multi-year operation on coin-cell batteries in always-on monitoring circuits. |
| Supply Voltage Range | 2.7 V to 15 V - supports direct integration into 3.3 V microcontroller systems and 12 V industrial sensors without regulators. |
| Input Common-Mode Range | Extends 0.3 V beyond V− and V+ rails - permits accurate zero-crossing detection and battery voltage monitoring down to 0 V reference. |
| Propagation Delay | 420 ns (low-to-high) at 5 V/100 mV overdrive - sufficient for RC timers, window comparators, and multivibrator clock generation up to ~1 MHz. |
| Output Short-Circuit Current | ±30 mA continuous - provides robust transient immunity during output contention or accidental shorts in compact PCB layouts. |
| Input Offset Voltage | Max 8 mV (BI grade) - ensures reliable threshold discrimination in low-amplitude signal paths like thermistor or photodiode interfaces. |
| ESD Tolerance | 1.5 kV HBM on output pins - reduces need for external TVS diodes in handheld device I/O protection schemes. |
Pinout & Package
LMC6772BIMX/NOPB is housed in an 8-pin SOIC (D) package measuring 3.91 mm × 4.90 mm, RoHS-compliant with NiPdAu lead finish and MSL Level-1 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Open-drain NMOS output of Comparator A - requires external pull-up; compatible with 1.8 V to 15 V logic families. |
| 2 | IN− A | Inverting input of Comparator A - high-impedance CMOS node (0.02 pA bias) for direct sensor connection. |
| 3 | IN+ A | Non-inverting input of Comparator A - rail-to-rail capable; accepts signals from −0.3 V to V+ + 0.3 V. |
| 4 | V− | Negative supply pin - serves as analog ground reference for both comparators and input common-mode range baseline. |
| 5 | IN+ B | Non-inverting input of Comparator B - electrically identical to Pin 3; enables dual-threshold or hysteresis configurations. |
| 6 | IN− B | Inverting input of Comparator B - matched performance to Pin 2; supports independent or cascaded comparator operation. |
| 7 | OUT B | Open-drain NMOS output of Comparator B - independently controllable; supports wired-OR with OUT A or other devices. |
| 8 | V+ | Positive supply pin - powers both comparators; regulates internal bias and output stage drive capability. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Enables direct interface to 0 V-referenced sensors (e.g., thermocouples, bridge transducers) without level-shifting circuitry. |
| Open-drain output architecture | Permits flexible logic-level translation: pull-up to 1.8 V, 3.3 V, or 5 V while powered from 2.7 V - ideal for mixed-voltage system interconnects. |
| 20 fA typical input bias current | Eliminates loading error in high-impedance source applications (e.g., pH electrodes, piezoelectric sensors) without external buffers. |
| 420 ns propagation delay @ 100 mV overdrive | Supports precise timing in RC-based one-shot multivibrators and window comparators with sub-microsecond response. |
| −40°C to +85°C operating range | Validated performance across industrial ambient conditions - suitable for automotive cabin modules and outdoor metering enclosures. |
Applications
| Battery Voltage Monitor | Logic-Level Translator |
|---|---|
|
Use Scenario: Monitoring Li-ion cell voltage during charge/discharge cycles in portable medical devices. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel triggers low-voltage cutoff, the other initiates overvoltage shutdown. Use Value: Rail-to-rail inputs sense 0–4.2 V directly; 10 μA quiescent current extends battery life by >20% versus bipolar comparators. |
Use Scenario: Interfacing a 3.3 V microcontroller GPIO to a 5 V peripheral bus in IoT edge nodes. IC Role / Device Role / Timing Role: Open-drain output pulled to 5 V rail - converts 3.3 V logic HIGH to 5 V HIGH while sinking 5 V LOW signals. Use Value: Eliminates discrete MOSFET translators; 420 ns delay preserves signal integrity for UART/SPI clock rates up to 1 MHz. |
| RC Timer Circuit | Alarm Threshold Detector |
|
Use Scenario: Generating precise 100 ms–5 s timing pulses in handheld test equipment using resistor-capacitor networks. IC Role / Device Role / Timing Role: Comparator B configured as hysteresis oscillator - charges/discharges capacitor via feedback resistors to set period. Use Value: Low input bias current prevents capacitor leakage errors; 2.7 V minimum supply enables operation from depleted alkaline cells. |
Use Scenario: Detecting smoke sensor output drift in residential fire alarms requiring stable trip points over temperature. IC Role / Device Role / Timing Role: Comparator A compares sensor voltage against precision reference; output drives latching alarm circuit. Use Value: 8 mV max input offset ensures <±1% threshold error across −40°C to +85°C; rail-to-rail input accommodates 0–3 V sensor swing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC6762BIMX/NOPB | Push-pull output (vs. open-drain); otherwise identical specs and pinout. | Requires no external pull-up; unsuitable for wired-OR or level-shifting. | Select when driving CMOS loads directly and board space prohibits pull-up resistors. |
| TLV3702IDR | Lower supply current (1.8 μA), but narrower supply range (2.7–16 V), no rail-to-rail input beyond rails. | Higher precision (1.5 mV VOS) but limited common-mode range restricts low-voltage sensor use. | Select for ultra-low-power applications where input voltage stays within rails and offset voltage is critical. |
Compared with LMC6772BIMX/NOPB, LMC6762BIMX/NOPB eliminates external components for simple digital interfacing, while TLV3702IDR trades input flexibility for lower quiescent current - making LMC6772BIMX/NOPB optimal when rail-exceeding sensing and wired-OR logic are required.
Availability
LMC6772BIMX/NOPB is available at Aetrix Electronics and suitable for battery-powered handheld electronics, portable metering systems, and low-voltage alarm circuits requiring stable component supply and long-term production continuity.
Supply support for LMC6772BIMX/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 specializing in analog and embedded processing technologies, with decades of expertise in precision signal conditioning and low-power design.
The LMC6772BIMX/NOPB belongs to TI's micropower comparator product line, engineered specifically for energy-constrained applications where extended battery life, wide supply range, and rail-to-rail input capability are essential - including portable instrumentation and safety-critical monitoring systems.
FAQ
What is the maximum supply voltage for LMC6772BIMX/NOPB?
The absolute maximum supply voltage (V+ – V−) for LMC6772BIMX/NOPB is 16 V, with recommended operating range from 2.7 V to 15 V. Exceeding 16 V risks permanent damage per the Absolute Maximum Ratings table. At 15 V operation, the device maintains full rail-to-rail input range and 420 ns propagation delay performance as specified in the datasheet.
Does LMC6772BIMX/NOPB support true rail-to-rail input beyond the supply rails?
Yes - LMC6772BIMX/NOPB guarantees input common-mode voltage range extending 0.3 V beyond both V+ and V− rails across all supply voltages (2.7 V, 5 V, 15 V). This is confirmed in Sections 5.3 and 5.4 of the datasheet, where VCM min/max values exceed supply limits (e.g., −0.3 V to 5.3 V at V+ = 5 V), enabling direct zero-crossing detection and sensor interfacing without clamping diodes.
Can LMC6772BIMX/NOPB outputs be tied together for wired-OR logic?
Yes - the open-drain NMOS outputs of LMC6772BIMX/NOPB (Pins 1 and 7) are explicitly designed for wired-OR configurations. When multiple outputs share a single pull-up resistor, the combined node goes LOW if any comparator asserts, enabling priority encoding or alarm aggregation. This functionality is documented in Section 3 (Description) and Figure 6-4 (Universal Logic Level Shifter).
What is the operating temperature range for LMC6772BIMX/NOPB?
LMC6772BIMX/NOPB is rated for −40°C to +85°C junction temperature, corresponding to the LMC6772BI grade per Section 5.2 Operating Ratings. This range is validated across electrical parameters including input offset voltage, propagation delay, and supply current - ensuring reliable performance in industrial handhelds and automotive cabin environments.
Is LMC6772BIMX/NOPB pin-compatible with LMC6772AIMX/NOPB?
Yes - LMC6772BIMX/NOPB and LMC6772AIMX/NOPB share identical SOIC-8 (D) package, pinout, and footprint. The only differences are electrical grade (BI vs AI): BI has tighter input offset voltage (8 mV max vs 5 mV max) and higher supply current limit (25 μA vs 20 μA), but both operate identically in circuit and require no PCB changes for substitution.
LMC6772BIMX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
LMC6772BIMX/NOPB FAQ
1.How can I place an order for LMC6772BIMX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6772BIMX/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 LMC6772BIMX/NOPB reliable?
The price and inventory of LMC6772BIMX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6772BIMX/NOPB is usually 5 days.
3.What payment methods are accepted for LMC6772BIMX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6772BIMX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6772BIMX/NOPB?
LMC6772BIMX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6772BIMX/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 LMC6772BIMX/NOPB?
For technical support, including LMC6772BIMX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6772BIMX/NOPB requirements.
6.How does Aetrix verify that LMC6772BIMX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC6772BIMX/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 LMC6772BIMX/NOPB meets industry standards.
7.What is the process for return or replacement of LMC6772BIMX/NOPB?
All LMC6772BIMX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC6772BIMX/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 LMC6772BIMX/NOPB part is unused and in its original packaging.
Return procedure for LMC6772BIMX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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