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Texas Instruments LMC6772BIN
- Part No.:
- LMC6772BIN
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LMC6772BIN.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,565
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Product details
Overview
LMC6772BIN 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, features rail-to-rail input common-mode range exceeding both supply rails, and achieves 420 ns propagation delay at 5 V with 100 mV overdrive - enabling precision voltage monitoring in handheld electronics and metering.
For engineers reviewing the LMC6772BIN datasheet, LMC6772BIN pinout, LMC6772BIN application, or LMC6772BIN 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 level shifting, and PDIP-8 packaging suitable for prototyping and legacy through-hole designs.
Technical Context
The LMC6772BIN implements two independent high-impedance CMOS comparators with input stages optimized for rail-to-rail common-mode operation - supporting inputs as low as −0.3 V below V− and up to +0.3 V above V+ across all supply voltages (2.7 V, 5 V, 15 V). Its open-drain NMOS output stage enables flexible pull-up to any voltage ≤15 V, independent of the comparator's own supply.
Internal biasing ensures stable operation down to 2.7 V with guaranteed 420 ns tPLH propagation delay (100 mV overdrive, 5 V supply) and 40 mA short-circuit protection. Input offset voltage is specified at ≤8 mV (LMC6772BI grade), with 75 dB CMRR and 80 dB PSRR ensuring robust performance in noisy, single-supply environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | Max 10 μA per comparator - enables multi-year battery life in always-on sensor monitors and portable devices. |
| Supply Voltage Range | 2.7 V to 15 V - supports direct integration into 3 V microcontroller systems and 12 V industrial rails without regulation. |
| Input Common-Mode Range | Extends ≥0.3 V beyond both rails (e.g., −0.3 V to 5.3 V at 5 V supply) - allows direct sensing of ground-referenced or rail-referenced signals without level-shifting. |
| Propagation Delay | 420 ns (tPLH, 100 mV overdrive, 5 V) - sufficient for RC timers, window comparators, and slow-speed alarm circuits. |
| Output Type | Open-drain NMOS - permits wired-OR configuration and pull-up to external logic rails (e.g., 3.3 V MCU I/O) regardless of comparator supply. |
| Short-Circuit Protection | 40 mA continuous sink limit - protects against accidental output shorts while maintaining reliability in unregulated environments. |
| Input Offset Voltage | ≤8 mV (LMC6772BI grade, 25°C) - ensures accurate threshold detection in precision voltage monitoring applications. |
Pinout & Package
LMC6772BIN is supplied in an 8-pin plastic dual in-line package (PDIP), measuring 9.27 mm × 6.35 mm with 2.54 mm lead pitch. This through-hole package supports breadboard evaluation, legacy board upgrades, and manual assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Comparator 1 Output | Open-drain NMOS drain - requires external pull-up; sinks current when active low. |
| 2 | Comparator 1 Inverting Input (−) | Differential input node - accepts signals from −0.3 V to V+ + 0.3 V. |
| 3 | Comparator 1 Non-Inverting Input (+) | Differential input node - same rail-to-rail common-mode range as Pin 2. |
| 4 | V− (Ground / Negative Supply) | Reference return path - serves as common-mode baseline and power return for both comparators. |
| 5 | Comparator 2 Non-Inverting Input (+) | Independent input for second comparator - identical electrical characteristics to Pin 3. |
| 6 | Comparator 2 Inverting Input (−) | Independent input for second comparator - identical electrical characteristics to Pin 2. |
| 7 | Comparator 2 Output | Open-drain NMOS drain - electrically isolated from Pin 1; supports separate pull-up networks. |
| 8 | V+ (Positive Supply) | Power rail input - supplies both comparators; accepts 2.7–15 V DC. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Enables direct interface to sensors, battery terminals, and rail-sensed voltages without external biasing or amplification. |
| 10 μA max supply current | Reduces quiescent power by >90% vs. standard comparators - critical for coin-cell or energy-harvesting systems. |
| Open-drain output architecture | Permits logic-level translation between disparate voltage domains (e.g., 5 V comparator driving 3.3 V MCU interrupt line). |
| 420 ns propagation delay at 5 V | Supports timing-critical functions like RC-based one-shot multivibrators and fast-response alarm latching. |
| 2.7 V minimum operating voltage | Ensures reliable operation across full discharge curve of single Li-ion or two alkaline cells. |
Applications
| Battery Voltage Monitor | Logic Level Shifter |
|---|---|
|
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 compares against upper threshold (4.2 V), the other against lower threshold (3.0 V). Use Value: Rail-to-rail inputs allow direct connection to battery; 10 μA supply current minimizes self-discharge impact on battery runtime. |
Use Scenario: Interfacing a 5 V microcontroller GPIO to a 3.3 V peripheral I²C bus. IC Role / Device Role / Timing Role: Comparator used as unidirectional level translator - input driven by 5 V signal, output pulled to 3.3 V via external resistor. Use Value: Open-drain output eliminates need for bidirectional translators; wide supply range simplifies shared V+ sourcing. |
| RC Timer Circuit | Alarm Threshold Detector |
|
Use Scenario: Generating precise time delays in portable medical devices using resistor-capacitor charging. IC Role / Device Role / Timing Role: One comparator acts as threshold detector in monostable multivibrator - triggers on capacitor voltage crossing reference. Use Value: 420 ns propagation delay ensures sub-microsecond timing accuracy; low supply current extends device operational life between charges. |
Use Scenario: Detecting smoke sensor output voltage rise above safe threshold in battery-powered fire alarms. IC Role / Device Role / Timing Role: Single comparator comparing sensor output to fixed reference - output drives buzzer or LED indicator. Use Value: Input common-mode range extending below ground allows reference generation at 0 V; 8 mV max VOS ensures consistent trip point across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC6772BIMX/NOPB | Same die, SOIC-8 package; 136 °C/W θJA vs. PDIP's higher thermal resistance; RoHS-compliant NiPdAu finish. | Better suited for automated SMT production and space-constrained PCBs; lacks through-hole mounting flexibility. | Select for volume manufacturing where reflow compatibility and board density are priorities over prototyping ease. |
| TLV3702CDR | Lower max supply current (1.8 μA), but narrower supply range (2.7–16 V); push-pull output (no external pull-up needed); 360 ns tPLH. | Eliminates pull-up resistors but cannot perform wired-OR; better for low-noise digital interfacing than level translation. | Choose when minimizing component count outweighs need for open-drain flexibility and rail-to-rail input margin. |
Compared with LMC6772BIN, the LMC6772BIMX/NOPB offers identical electrical performance in a surface-mount package ideal for production, while the TLV3702CDR trades open-drain versatility for lower power and push-pull simplicity - making each optimal for distinct layout and system architecture constraints.
Availability
LMC6772BIN is available at Aetrix Electronics and suitable for battery voltage monitoring, RC timer circuits, alarm threshold detection, and logic level shifting requiring stable component supply and long-term obsolescence support.
Supply support for LMC6772BIN 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.
The LMC6772BIN belongs to TI's micropower comparator product line, engineered specifically for ultra-low-quiescent-current sensing and decision-making in portable, battery-powered, and energy-sensitive systems.
FAQ
What is the maximum supply voltage rating for the LMC6772BIN?
The LMC6772BIN has an absolute maximum supply voltage (V+ − V−) rating of 16 V, with recommended operating range from 2.7 V to 15 V. Exceeding 16 V risks permanent damage. The device maintains rail-to-rail input operation and 420 ns propagation delay across this full 2.7–15 V range, making LMC6772BIN suitable for both low-voltage battery and higher-voltage industrial rails.
Does the LMC6772BIN support true rail-to-rail input operation?
Yes - the LMC6772BIN input common-mode voltage range extends at least 0.3 V beyond both supply rails (e.g., −0.3 V to 5.3 V at 5 V supply), verified across 2.7 V, 5 V, and 15 V operation. This allows direct sensing of signals referenced to ground or V+, eliminating level-shifting components. The LMC6772BIN achieves this via specialized CMOS input stage design with 75 dB CMRR.
Can the LMC6772BIN outputs drive a 15 V pull-up rail while powered from 3.3 V?
Yes - the open-drain NMOS output stage of the LMC6772BIN is fully isolated from its internal supply. When powered from 3.3 V, either output (Pin 1 or Pin 7) can be pulled up to any voltage ≤15 V using an external resistor. This enables robust logic-level translation, such as interfacing a 3.3 V microcontroller to a 12 V actuator control line - a core capability of the LMC6772BIN.
What is the guaranteed propagation delay for the LMC6772BIN at 2.7 V supply?
At 2.7 V supply, the LMC6772BIN guarantees tPLH ≤ 420 ns and tPHL ≤ 450 ns under 100 mV input overdrive conditions (TJ = 25°C). These values are confirmed in Section 5.5 AC Electrical Characteristics of the datasheet. The LMC6772BIN maintains usable speed even at minimum supply, supporting timing-critical functions like one-shot multivibrators in ultra-low-voltage systems.
Is the LMC6772BIN pin-compatible with other variants in the LMC6772 family?
Yes - all LMC6772 variants (including LMC6772AIMX/NOPB, LMC6772BIMX/NOPB, and LMC6772QMM/NOPB) share identical 8-pin PDIP, SOIC, and VSSOP footprints and pinouts. The LMC6772BIN uses the same pin configuration as the SOIC and VSSOP versions, enabling direct substitution in existing layouts when mechanical constraints permit. Functional behavior is consistent across grades; only temperature range and VOS limits differ.
LMC6772BIN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- :
- 8-PDIP
LMC6772BIN FAQ
1.How can I place an order for LMC6772BIN through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6772BIN 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 LMC6772BIN reliable?
The price and inventory of LMC6772BIN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6772BIN is usually 5 days.
3.What payment methods are accepted for LMC6772BIN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6772BIN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6772BIN?
LMC6772BIN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6772BIN 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 LMC6772BIN?
For technical support, including LMC6772BIN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6772BIN requirements.
6.How does Aetrix verify that LMC6772BIN is sourced from the original manufacturer or authorized distributors?
All LMC6772BIN 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 LMC6772BIN meets industry standards.
7.What is the process for return or replacement of LMC6772BIN?
All LMC6772BIN units undergo pre-shipment inspection (PSI). If there is an issue with LMC6772BIN, 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 LMC6772BIN part is unused and in its original packaging.
Return procedure for LMC6772BIN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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