Texas Instruments TLC374IDR

Overview

TLC374IDR from Texas Instruments is a LinCMOS™ quadruple differential comparator IC operating from single or dual supplies (2 V to 18 V), featuring 5 mV max input offset voltage at 25°C, 200 ns typical response time for TTL-level inputs, and 5 pA typical input bias current. It delivers n-channel open-drain outputs compatible with TTL/MOS/CMOS logic and is rated for –40°C to 85°C industrial operation.

For engineers reviewing the TLC374IDR datasheet, TLC374IDR pinout, TLC374IDR application, or TLC374IDR equivalent, this page provides verified package mapping (SOIC-14), confirmed comparator-level circuit behavior, temperature-grade-specific electrical limits, and validated drop-in alternatives to LM339 in industrial sensing and level-detection designs.

Technical Context

The TLC374IDR integrates four independent high-impedance (10¹² Ω typ) comparators on a single die using LinCMOS™ process technology, enabling direct interfacing with high-Z sources like precision voltage dividers or sensor bridges. Each channel features rail-to-rail common-mode input range down to ground and supports wired-AND output configurations via open-drain topology.

It implements patented ESD protection rated to 1000 V (HBM), with internal shunt transistors that suppress leakage after discharge-critical for maintaining sub-picoamp input bias integrity. The device operates across 2 V–18 V supply range, with supply current limited to 800 µA max over full temperature range (–40°C to 85°C).

Key Specifications

Pinout & Package

Package: SOIC-14 (D package), 14-pin narrow-body surface-mount, RoHS-compliant, NIPDAU lead finish, MSL Level-1 (260°C peak reflow).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM339DR and TLC374CDR, the TLC374IDR uniquely combines industrial temperature rating, LinCMOS™ low-input-bias advantage, and certified 1000-V HBM ESD protection-making it optimal for robust, high-precision sensing in demanding environments.

Availability

TLC374IDR is available at Aetrix Electronics and suitable for motor control fault detection, multi-sensor monitoring, and power supply supervision requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLC374IDR 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 linear ICs and industrial-grade components.

The TLC374IDR belongs to TI's LinCMOS™ comparator family, designed specifically for high-impedance, low-power, wide-supply industrial sensing applications where input bias current, offset stability, and ESD robustness are critical.

FAQ

What is the maximum operating temperature for the TLC374IDR?

The TLC374IDR is characterized for continuous operation from –40°C to +85°C ambient temperature. This industrial-grade rating is validated per TI's production test flow and applies across all electrical parameters in the datasheet, including input offset voltage drift and response time consistency. The TLC374IDR maintains full functionality within this range without derating when mounted per JEDEC standards.

Does the TLC374IDR require external pull-up resistors on its outputs?

Yes, the TLC374IDR features n-channel open-drain outputs (Pins 1, 10, 13, 14) and requires external pull-up resistors to define the high logic level. Typical values range from 2.2 kΩ (for 5 V logic) to 10 kΩ (for 3.3 V), selected based on rise time and sink current requirements. No internal pull-ups are present - omitting external resistors results in undefined output states.

Is the TLC374IDR pin-compatible with the LM339 series?

Yes, the TLC374IDR is fully pin-compatible with the LM339, LM239, and LM2901 in SOIC-14 (D) package. Pin assignments for inputs, outputs, VDD, and GND match exactly - enabling drop-in replacement without PCB changes. However, note that TLC374IDR uses LinCMOS™ technology, delivering lower input bias current and higher ESD immunity than BJT-based LM339 variants.

What is the input common-mode voltage range for the TLC374IDR at 5 V supply?

At VDD = 5 V, the TLC374IDR supports a common-mode input voltage range of 0 V to 3.5 V (VICRmin to VDD–1.5 V). This includes ground-referenced signals, enabling direct interface with sensors or DAC outputs tied to system GND. Operation outside this range may activate internal protection diodes and must be current-limited to ±5 mA per input.

Can the TLC374IDR operate from a single 3.3 V supply?

Yes, the TLC374IDR supports single-supply operation down to 2 V, making it fully functional at 3.3 V. At this voltage, it delivers 5 mV max input offset, 200 ns typical response time, and 5 pA typical input bias current - all within datasheet specifications. Output high-level voltage is defined by the external pull-up, not VDD, preserving compatibility with mixed-voltage logic systems.