TLC352IPW

Comparators Overview

The TLC352IPW is a dual differential voltage comparator manufactured by Texas Instruments, housed in an 8-pin TSSOP surface-mount package. It operates from a single or dual supply ranging from 2.7V to 18V, with an industrial temperature range of -40°C to 85°C. Key electrical characteristics include a typical input bias current of 5pA, an input offset voltage of 5mV at 25°C, and a response time of 200ns under standard test conditions. The device features open-drain outputs compatible with TTL, MOS, and CMOS logic families.

Comparators Feature Summary

• Extremely low input bias current for high-impedance source interfacing
• Open-drain output stage allows flexible logic level translation
• Built-in electrostatic discharge protection circuits
• Pin-compatible replacement for LM393

Comparators Applications

• Low-voltage battery-powered monitoring systems
• Threshold detection circuits requiring minimal power consumption
• Interface modules connecting high-impedance sensors to digital logic
• Voltage level shifting between different logic families

Comparators Procurement Notes

Verify the specific suffix 'IPW' corresponds to the TSSOP package and industrial temperature grade (-40°C to 85°C) required for your design. Confirm that the open-drain output configuration aligns with your pull-up resistor requirements and logic interface needs. Ensure ESD handling precautions are observed during assembly due to the CMOS input structure.

Comparators Selection Notes

Select this component when ultra-low quiescent current and high input impedance are critical. The open-drain output necessitates an external pull-up resistor; ensure the selected resistor value supports the desired rise time without exceeding the output sink current limits. Verify that the supply voltage range matches the application's power constraints and that the operating temperature falls within the specified industrial range.

Comparators Part Context

This device belongs to the TLC35x family of micro-power comparators from Texas Instruments. It shares architectural similarities with other members like the TLC372 but offers specific performance trade-offs regarding speed and power. The TSSOP packaging provides a compact footprint suitable for space-constrained printed circuit board designs while maintaining thermal performance adequate for general-purpose applications.

Comparators Replacement Considerations

The datasheet explicitly states pin compatibility with the LM393. When substituting, verify that the alternative device supports the same open-drain output topology and supply voltage range. Ensure the replacement meets the required input bias current and offset voltage specifications for precision applications.

Comparators FAQ

How should unused inputs be handled on the TLC352?

Do not tie unused inputs together as this may cause high-frequency chatter due to internal noise. Instead, connect them to a valid voltage within the specified input range that provides at least 50mV of differential voltage.

What is the maximum allowable voltage difference between the input pins and the supply rails?

The inputs or output must not exceed the supply rails by more than 300mV. Applying signals to the inputs without supply voltage present is not recommended.

Can the open-drain output be shorted directly to the pull-up voltage?

Directly shorting the output to VDD can cause thermal runaway and device destruction, especially at high pull-up voltages above 12V. A series current-limiting resistor is recommended if shorts are possible.