Texas Instruments TLC393IP

Overview

TLC393IP from Texas Instruments is a dual micropower voltage comparator with open-drain CMOS outputs, designed for single-supply operation from 3 V to 16 V. It delivers 110 µW typical supply power at 5 V, 2.5 µs typical propagation delay (tPLH) with 5-mV overdrive, and ≤5 mV input offset voltage across −40°C to 85°C - enabling precision threshold detection in battery-powered industrial sensors and low-power supervisory circuits.

For engineers reviewing the TLC393IP datasheet, TLC393IP pinout, TLC393IP application, or TLC393IP equivalent, key selection considerations include its industrial-temperature-rated LinCMOS™ architecture, rail-to-rail common-mode input range (0 V to VDD − 1.5 V), ultra-low input bias current (≤2 nA at 85°C), and compatibility with pull-up loads up to 16 V - critical for robust level-shifting and window-comparator designs.

Technical Context

The TLC393IP implements two independent comparators using Texas Instruments' LinCMOS™ process, combining standard CMOS advantages (low power, high input impedance, pA-level bias currents) with analog-stable performance: input offset voltage remains ≤7 mV over −40°C to 85°C, and CMMR/SVR exceed 84 dB across temperature. Its open-drain output stage requires external pull-up but supports mixed-voltage interfacing - e.g., 5-V logic driving 12-V loads.

Unlike push-pull comparators, the TLC393IP's output cannot source current; it sinks up to 20 mA per channel with VOL ≤700 mV at IOL = 6 mA and 85°C. Propagation delay is overdrive-dependent (1.1–3.6 µs for tPHL, 1.1–4.5 µs for tPLH at CL = 15 pF), making timing predictable only when overdrive exceeds 5 mV - a design constraint for low-signal-edge applications.

Key Specifications

Pinout & Package

Packaged in an 8-pin plastic DIP (P package), the TLC393IP uses a standard dual-comparator pinout with no internal connections on pins 3, 4, 6, 7, 9, 10, 12, 13, 14, 15, 16, 17, 18, 19, and 20 - matching industry-standard LM393 layout for drop-in replacement where temperature and offset specs align.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM393DR and TLC3702CP, the TLC393IP uniquely balances industrial temperature operation, micropower consumption (65 µA max), and open-drain versatility - making it optimal for battery-backed supervision and multi-rail industrial sensing where reliability and flexibility are prioritized over raw speed or lowest cost.

Availability

TLC393IP is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial motor controls, and embedded power supervision requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for TLC393IP 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 over 50 years of innovation in precision analog ICs.

The TLC393IP belongs to TI's LinCMOS™ comparator family, engineered for ultra-low-power, high-accuracy voltage comparison in harsh environments - targeting industrial automation, automotive subsystems, and portable medical equipment.

FAQ

What is the maximum operating temperature range for the TLC393IP?

The TLC393IP is characterized for continuous operation from −40°C to +85°C - the extended industrial temperature range. This rating is verified per TI's datasheet SLCS115D, with electrical parameters guaranteed across this full span, including input offset voltage ≤7 mV and supply current ≤65 µA. Operation outside this range may result in parametric degradation or functional failure.

Does the TLC393IP require external pull-up resistors on its outputs?

Yes, the TLC393IP features open-drain CMOS outputs that cannot source current - each output (pins 1 and 8) must be connected to a pull-up resistor tied to a valid voltage rail (up to 16 V). Typical values range from 2.2 kΩ to 10 kΩ depending on rise time and load requirements. Without pull-up, outputs remain floating and cannot drive logic-high states.

Can the TLC393IP operate from a 3-V supply?

Yes, the TLC393IP supports supply voltages from 3 V to 16 V per its recommended operating conditions. At 3 V, the common-mode input range is 0 V to 1.5 V, and low-level output voltage (VOL) remains ≤700 mV at IOL = 6 mA and 85°C - enabling use in modern low-voltage IoT sensor nodes while maintaining specified timing and accuracy.

How does the TLC393IP differ from the LM393 in power consumption?

The TLC393IP consumes approximately 110 µW typical at 5 V (22 µA supply current), which is roughly 1/20th the power of the standard LM393 (≈2.2 mW at 5 V). This dramatic reduction stems from TI's LinCMOS™ process - delivering micropower operation without sacrificing propagation delay (2.5 µs vs. LM393's ~1.5 µs), making the TLC393IP ideal for energy-constrained applications.

Is the TLC393IP pin-compatible with the LM393?

The TLC393IP uses the same 8-pin DIP (P) package and identical pinout as the LM393 - pins 1 (1OUT), 2 (1IN−), 5 (GND), 6 (VDD), 7 (2IN−), 8 (2OUT), 9 (2IN+), and 11 (1IN+) match functionally. However, due to differences in input offset, temperature range, and output drive strength, system-level validation is required before drop-in replacement - especially in industrial-temperature or precision-threshold designs.