TLC555CPS

Overview

The TLC555CPS is a single-channel CMOS timer manufactured by Texas Instruments, utilizing LinCMOS technology. It operates within a supply voltage range of 2V to 15V and supports frequencies up to 2.1 MHz. The device features low power consumption with a typical supply current of 250 µA at 5V. It provides high output drive capability, sourcing 10 mA and sinking 100 mA. Packaged in an 8-pin Small Outline Package (SOIC) with a width of 3.90 mm, it functions as a drop-in replacement for the NE555 while offering superior performance in battery-powered applications due to its low quiescent current.

Feature Summary

• LinCMOS Technology: Low power consumption (250 µA typical) suitable for battery-operated devices.
• High Output Drive: Capable of sinking 100 mA and sourcing 10 mA directly.
• Wide Voltage Range: Operates from 2V to 15V single supply.
• Frequency Performance: Oscillator frequency reaches up to 2.1 MHz.

Applications

• Precision timing circuits
• Pulse generation and modulation
• Time delay generation
• Sequential timing control

Procurement Notes

Verify the package suffix 'PS' corresponds to the 8-pin SOIC variant when ordering. Confirm the operating temperature grade matches the application requirements, as standard variants typically cover 0°C to +70°C. Ensure ESD handling protocols are followed during assembly, as the device meets MIL-STD-883C Method 3015.2 standards.

Selection Notes

Select the TLC555CPS over bipolar counterparts like the NE555 when minimizing static power consumption is critical. The CMOS architecture allows for smaller external timing capacitors due to high input impedance. Verify that the required output current does not exceed the 100 mA sink limit for direct load driving without additional buffering.

Part Context

The TLC555 series represents Texas Instruments' implementation of the classic 555 timer using CMOS processes. This family includes various packages such as DIP, SOIC, and TSSOP. The TLC555CPS specifically denotes the surface-mount SOIC version, designed for automated assembly and compact PCB layouts compared to through-hole alternatives.

Replacement Considerations

Functionally interchangeable with NE555, LM555, and LMC555 timers regarding pinout and basic operation. When replacing bipolar versions, account for differences in output drive strength and input threshold characteristics. Ensure the replacement component supports the specific voltage and temperature constraints of the existing design.