Texas Instruments TLC372CPW

Overview

TLC372CPW from Texas Instruments is a dual CMOS voltage comparator with open-drain outputs, designed for low-power, high-impedance sensing in single- or dual-supply systems. It delivers 200 ns typical response time at 5V, 150 µA supply current per channel, 5 pA typical input bias current, and operates across 3V–16V supply range with common-mode input down to ground. It is used in precision threshold detection circuits such as power supply monitoring and battery voltage supervision.

For engineers reviewing the TLC372CPW datasheet, TLC372CPW pinout, TLC372CPW application, or TLC372CPW equivalent, key selection considerations include its open-drain output architecture, ultra-low input bias current, wide supply range, temperature-stable offset voltage (≤5 mV max), and compatibility with TTL/MOS/CMOS logic levels via external pull-up.

Technical Context

The TLC372CPW integrates two independent CMOS differential comparators sharing no internal coupling, each featuring high-gain input stages with >10¹² Ω input impedance and rail-to-rail common-mode range (0 V to VDD−1 V). Its open-drain outputs require external pull-up resistors and support wired-AND logic, level translation up to 16 V, and sink currents up to 16 mA.

It is characterized for 0°C to 70°C operation (TLC372C grade), supports single-supply (VDD/GND) or dual-supply (VDD/VSS) configurations with ≥3 V differential, and includes built-in ESD protection rated at 1000 V HBM - critical for handling in automated assembly environments.

Key Specifications

Pinout & Package

TLC372CPW is housed in a 8-pin TSSOP (Thin Shrink Small Outline Package) with 0.65 mm pitch, JEDEC MO-153 compliant, and moisture sensitivity level 1 (MSL-1). The package supports surface-mount reflow and offers improved thermal resistance (θJA = 149 °C/W) versus PDIP variants.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM393DR and TLC372CDR, the TLC372CPW uniquely combines ultra-low input bias current, 200 ns speed, and TSSOP packaging - making it optimal for space-constrained, high-precision, low-power dual-threshold detection where signal fidelity and layout density matter.

Availability

TLC372CPW is available at Aetrix Electronics and suitable for power supply monitoring, battery management systems, and industrial sensor interface applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for TLC372CPW 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, embedded processing, and connectivity technologies, with decades of expertise in precision analog ICs and industrial-grade reliability.

The TLC372 product line was engineered for low-power, high-impedance voltage comparison in industrial, automotive, and portable electronics - emphasizing rail-to-rail input operation, ESD-hardened design, and open-drain flexibility for system-level integration.

FAQ

What is the maximum supply voltage rating for the TLC372CPW?

The absolute maximum supply voltage (VDD) for the TLC372CPW is 18 V, though recommended operation is limited to 3 V–16 V per the datasheet. Exceeding 16 V risks violating recommended operating conditions and may accelerate parametric drift or reduce long-term reliability - always observe the 18 V absolute maximum as a hard limit, not an operating target. The TLC372CPW must never be operated above this value even momentarily.

Can the TLC372CPW operate from a single 3.3 V supply?

Yes, the TLC372CPW is fully specified to operate from a single 3.3 V supply, delivering 200 ns typical response time and 150 µA supply current per channel. Its common-mode input range extends from 0 V to VDD−1 V (i.e., 0 V to 2.3 V), supporting direct interface with 3.3 V reference sources and enabling use in modern low-voltage embedded systems without level-shifting circuitry.

Does the TLC372CPW have internal hysteresis?

No, the TLC372CPW does not include internal hysteresis. It is a basic comparator requiring external positive feedback (e.g., resistor network between output and non-inverting input) to implement hysteresis and prevent chatter near threshold. This design allows full user control over hysteresis magnitude and configuration - whether inverting or non-inverting topology - as documented in TI Application Notes SBOA219 and SNOA997.

What is the purpose of the open-drain output in the TLC372CPW?

The open-drain output in the TLC372CPW enables wired-AND logic, level translation up to 16 V independent of VDD, and flexible pull-up configuration (e.g., to 5 V, 12 V, or 24 V). It allows multiple comparators to share a single interrupt line, simplifies interface with diverse logic families (TTL, CMOS, MOS), and supports sinking up to 16 mA - essential for driving LEDs, optocouplers, or microcontroller GPIOs directly.

Is the TLC372CPW pin-compatible with the LM393?

Yes, the TLC372CPW is explicitly pin-compatible with the LM393 in the same package variant - confirmed by TI's device comparison table and functional block diagrams. Both share identical 8-pin TSSOP (PW) pinout: OUT A, IN− A, IN+ A, GND, IN+ B, IN− B, OUT B, VDD. However, electrical differences (e.g., input bias current, speed, supply range) require validation in the target application before drop-in replacement.