Texas Instruments TL393IP

Overview

TL393IP from Texas Instruments is a dual differential comparator in PDIP-8 package, designed for low-voltage and single-supply operation (2 V to 7 V), with ground-inclusive common-mode input range, 0.65 µs typical response time at 5 V, and 0.7 mA typical supply current - used in voltage monitoring and threshold-detection circuits in industrial power supplies and battery management systems.

For engineers reviewing the TL393IP datasheet, TL393IP pinout, TL393IP application, or TL393IP equivalent, key selection considerations include its rail-to-rail input capability down to GND, open-collector outputs compatible with TTL/CMOS logic levels, low quiescent current for portable designs, and guaranteed operation across –40°C to 105°C ambient temperature.

Technical Context

The TL393IP implements two independent bipolar comparators on a single die using TI's proprietary bipolar process, enabling lower supply current than LM393 while maintaining faster switching. Each comparator features an open-collector output stage capable of sinking up to 20 mA per channel, with input bias currents as low as –40 nA at 25°C.

It operates over a wide supply range (2–7 V) and supports common-mode input voltages from GND to VCC – 1.2 V (at 25°C), making it suitable for direct interfacing with sensors and microcontroller ADC references without level-shifting circuitry.

Key Specifications

Pinout & Package

TL393IP is housed in an 8-pin plastic dual in-line package (PDIP), with 0.3-inch body width and through-hole mounting compatibility. The package supports manual soldering and wave-solder processes, and is RoHS-compliant per TI's eco-plan documentation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM393N and TL331CP, TL393IP delivers superior speed-to-power ratio in a standard through-hole package, making it optimal for industrial monitoring where reliability, ease of prototyping, and consistent performance across temperature are prioritized over ultra-low power or miniaturization.

Availability

TL393IP is available at Aetrix Electronics and suitable for industrial power supplies, battery management systems, and motor control circuits requiring stable component supply and long-term obsolescence support.

Supply support for TL393IP 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 company headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with over 50 years of innovation in precision analog ICs.

The TL393 product line was developed as a performance-enhanced replacement for LM393 in industrial and portable applications demanding lower supply current and faster response without sacrificing robustness or temperature range.

FAQ

What is the maximum supply voltage rating for TL393IP?

The absolute maximum supply voltage for TL393IP is 7 V, as specified in the Absolute Maximum Ratings table. Operation above this voltage risks permanent damage. For reliable long-term performance, TI recommends staying within the recommended operating range of 2 V to 7 V, with 5 V being the most commonly used nominal supply in design examples and test conditions.

Does TL393IP support rail-to-rail input operation?

TL393IP does not support full rail-to-rail input - its common-mode input voltage range extends from 0 V (GND) to VCC – 1.2 V at 25°C, and to VCC – 2 V across the full –40°C to 105°C range. This means the inputs can accept signals down to ground but cannot reliably sense voltages within ~1.2 V of VCC without degradation in accuracy or response.

Can TL393IP drive a 5 V logic input directly?

No - TL393IP has open-collector outputs and cannot source current. To interface with a 5 V logic input, an external pull-up resistor to 5 V must be connected to each output pin (pins 1 and 7). The output will then sink current when active low, pulling the logic node to near 0 V; the pull-up defines the high-level voltage.

Is TL393IP pin-compatible with LM393N?

Yes - TL393IP and LM393N share identical PDIP-8 packaging, pinout, and terminal assignments (1OUT, 1IN–, 1IN+, GND, 2IN+, 2IN–, 2OUT, VCC). This allows direct substitution in existing LM393N layouts without PCB changes, though designers should verify timing and supply current margins meet updated system requirements.

What is the typical input offset voltage of TL393IP at room temperature?

The typical input offset voltage of TL393IP at 25°C is 5 mV, with a minimum of 1.5 mV and a maximum of 9 mV across the full temperature range (–40°C to 105°C). This parameter is measured with VO = 1.4 V and VIC = VICRmin, and directly impacts threshold accuracy in precision voltage-monitoring applications.