Texas Instruments LMC6772BIN/NOPB

Overview

LMC6772BIN/NOPB from Texas Instruments is a dual micropower rail-to-rail input CMOS comparator with open-drain outputs, 10 μA max supply current per channel, 2.7 V to 15 V supply range, and 420 ns propagation delay (5 V, 100 mV overdrive). It enables low-power voltage monitoring and threshold detection in battery-powered portable electronics.

For engineers reviewing the LMC6772BIN/NOPB datasheet, LMC6772BIN/NOPB pinout, LMC6772BIN/NOPB application, or LMC6772BIN/NOPB equivalent, key selection criteria include ultra-low quiescent current, rail-to-rail input operation beyond supply rails, open-drain output flexibility for wired-OR logic and level shifting, short-circuit protection (40 mA), and compatibility with single-supply systems down to 2.7 V.

Technical Context

The LMC6772BIN/NOPB integrates two independent comparators sharing no internal biasing-each operates with its own rail-to-rail input stage and open-drain NMOS output. Input common-mode voltage extends 200 mV beyond both V+ and V− rails at 2.7 V, enabling direct sensing of signals near ground or supply without external level-shifting circuitry.

Its open-drain architecture supports pull-up to any voltage ≤15 V independent of V+, allowing interoperability across mixed-voltage domains. Propagation delay is specified at 420 ns (low-to-high) under 100 mV overdrive at 5 V, with typical supply current of 12 μA per channel at 25°C and 2.7 V supply.

Key Specifications

Pinout & Package

LMC6772BIN/NOPB is housed in an 8-pin PDIP (Plastic Dual In-line Package) with 0.300″ body width and standard through-hole mounting. Pin spacing is 0.100″, compatible with legacy prototyping and industrial PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual micropower comparator applications.

Compared with LMC6772BIN/NOPB, LMC6772BIMX/NOPB offers improved offset accuracy and surface-mount compatibility but lacks through-hole mounting; TLV3702IDR reduces supply current dramatically but sacrifices open-drain functionality and rail-to-rail input margin, limiting use in mixed-voltage or sensor-direct interface designs.

Availability

LMC6772BIN/NOPB is available at Aetrix Electronics and suitable for portable medical devices, battery-powered instrumentation, handheld test equipment, and industrial alarm systems requiring stable component supply and long-term obsolescence management.

Supply support for LMC6772BIN/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 LMC6772BIN/NOPB belongs to TI's micropower comparator product line, engineered specifically for ultra-low-power sensing, battery monitoring, and threshold-detection applications in portable and energy-constrained systems.

FAQ

What is the maximum supply voltage rating for LMC6772BIN/NOPB?

The absolute maximum supply voltage (V+ to V−) for LMC6772BIN/NOPB is 16 V. Continuous operation is specified from 2.7 V to 15 V. Exceeding 16 V risks permanent damage to internal ESD structures and output transistors. The device's open-drain output can be pulled up to 15 V regardless of V+, but V+ itself must remain within the 2.7–15 V operating range for guaranteed comparator functionality.

Does LMC6772BIN/NOPB support rail-to-rail input operation beyond the supply rails?

Yes, LMC6772BIN/NOPB supports rail-to-rail input common-mode voltage range exceeding both V+ and V− by at least 200 mV at 2.7 V supply, and proportionally more at higher supplies (e.g., ±0.3 V at 5 V). This is confirmed in Section 5.3 and 5.4 of the datasheet under VCM min/max specifications. It enables direct connection of sensors or signals referenced to ground or V+ without external biasing resistors.

Can LMC6772BIN/NOPB outputs be wired together for OR logic?

Yes, LMC6772BIN/NOPB features open-drain NMOS outputs (pins 1 and 7), explicitly designed for wired-OR configurations. When multiple outputs share a single pull-up resistor, the combined node goes low if any comparator asserts. This is documented in the Description section and Figure 6-4 (Universal Logic Level Shifter). Ensure total sink current remains within 40 mA aggregate limit.

What is the guaranteed propagation delay for LMC6772BIN/NOPB at 2.7 V supply?

At 2.7 V supply, 100 mV input overdrive, and TJ = 25°C, the guaranteed maximum propagation delay (tPLH) for LMC6772BIN/NOPB is 420 ns, matching the 5 V specification. This is stated in Section 1 Features and verified in Section 5.5 AC Electrical Characteristics. Performance degrades only slightly at temperature extremes, remaining under 500 ns across −40°C to +85°C.

Is LMC6772BIN/NOPB suitable for automotive applications?

No, LMC6772BIN/NOPB is not qualified for automotive use. It is a catalog-grade part rated for −40°C to +85°C operation. For automotive applications, TI offers the LMC6772QMM/NOPB variant, which is AEC-Q100 qualified and specified over −40°C to +125°C. The BIN/NOPB variant lacks automotive qualification testing, traceability, and process controls required for safety-critical vehicle systems.