Texas Instruments TLC372ID

Overview

TLC372ID from Texas Instruments is a dual CMOS voltage comparator with open-drain outputs, designed for single- or dual-supply operation across 3V–16V. It delivers 200ns typical response time for TTL-level input steps, 5pA typical input bias current, and 150µA typical supply current at 5V - enabling precision threshold detection in low-power industrial sensor interfaces and power-monitoring circuits.

For engineers reviewing the TLC372ID datasheet, TLC372ID pinout, TLC372ID application, or TLC372ID equivalent, key selection considerations include its −40°C to 85°C operating range, open-drain output compatibility with TTL/MOS/CMOS logic, ultra-low input bias current, wide common-mode input range including ground, and pin-compatibility with LM393 for drop-in replacement in legacy designs.

Technical Context

The TLC372ID implements two independent high-impedance (10¹²Ω typical) CMOS differential input stages, each driving an n-channel open-drain output capable of sinking up to 16mA. Its input stage operates with no phase inversion across the full common-mode range (0 V to VDD−1.5 V), supporting direct interfacing with high-impedance sources like resistive dividers or sensor bridges.

Internal ESD protection (1000V HBM) and rail-to-rail input capability enable robust operation in noisy industrial environments. The open-drain architecture allows wired-AND logic, level translation up to 16V, and flexible pull-up configuration - critical for window comparators, overvoltage/undervoltage detection, and digital signal conditioning where output logic levels must be independent of VDD.

Key Specifications

Pinout & Package

Package: SOIC-8 (D package), 8-pin small-outline integrated circuit with standard 1.27mm pitch and gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM393DR and TLC372CP, the TLC372ID uniquely combines industrial temperature range (−40°C to 85°C), ultra-low input bias (5pA), and micro-power operation (150µA) in a pin-compatible SOIC-8 package - making it optimal for next-generation industrial sensors and power monitors where reliability and precision coexist.

Availability

TLC372ID is available at Aetrix Electronics and suitable for industrial power monitoring, sensor interface design, and motor control feedback systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLC372ID 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 chain components and industrial-grade ICs.

The TLC372ID belongs to TI's precision comparator product line, engineered specifically for low-power, high-accuracy voltage comparison in harsh industrial environments - emphasizing rail-to-rail input, open-drain flexibility, and extended temperature qualification.

FAQ

What is the maximum supply voltage rating for the TLC372ID?

The absolute maximum supply voltage (VDD) for the TLC372ID is 18V, as specified in Section 5.1 of the official datasheet. However, the recommended operating range is 3V to 16V. Operating continuously at 18V may impact long-term reliability and is not supported under normal conditions - always maintain VDD ≤16V for guaranteed parametric performance and thermal safety in industrial applications involving the TLC372ID.

Does the TLC372ID support rail-to-rail input operation?

The TLC372ID supports a common-mode input voltage range from 0V (ground) to VDD−1.5V across its full operating temperature range (−40°C to +85°C). While not fully rail-to-rail (it does not reach VDD), this range explicitly includes ground and accommodates most single-supply sensor and reference configurations without level-shifting circuitry - a key design advantage confirmed in Section 5.2 and 5.3 of the TLC372ID datasheet.

Can the TLC372ID outputs drive a 5V logic load directly?

Yes - the TLC372ID features open-drain outputs compatible with TTL, MOS, and CMOS logic families. To drive a 5V logic load, connect an external pull-up resistor (typically 1kΩ–10kΩ) from OUTx to a 5V rail. The device can sink ≥6mA while maintaining VOL ≤400mV, ensuring valid logic-low levels for standard 5V CMOS/TTL inputs - verified in the Electrical Characteristics table (Section 5.3) for the TLC372ID.

Is the TLC372ID pin-compatible with the LM393?

Yes - the TLC372ID is explicitly designed as a pin-compatible upgrade to the LM393 in SOIC-8 (D) package. Both share identical pin assignments (OUT1, IN−1, IN+1, GND, IN+2, IN−2, OUT2, VDD), enabling drop-in replacement in existing designs. This compatibility is stated in the "Features" section and confirmed in the "Device Comparison Table" of the TLC372ID datasheet, though electrical improvements (e.g., lower bias current, faster response) require validation in the target application.

What is the typical input offset voltage for the TLC372ID at room temperature?

The typical input offset voltage (VIO) for the TLC372ID at 25°C is 1mV, with a maximum of 5mV across the full operating temperature range (−40°C to +85°C). This value is specified in Section 5.3 "Electrical Characteristics" of the official datasheet and directly impacts threshold accuracy in precision level-detection circuits using the TLC372ID - especially critical in narrow-window applications like battery cell voltage monitoring.