TLC556ID

The TLC556ID from Texas Instruments is a dual CMOS monolithic timing circuit, functioning as a general-purpose timer and oscillator. It is designed for operation from 3V to 18V and can achieve frequencies up to 2.1MHz. This device is functionally interchangeable with the NE556 and shares the same pinout.

Key electrical characteristics include a typical quiescent current of 720 µA and a typical power consumption of 2mW at 5V. The output is CMOS compatible, capable of swinging rail-to-rail, with a typical sink current of 100mA and a source current of 10mA. Its high input impedance allows for smaller timing capacitors compared to the NE556, enabling more accurate time delays and oscillations.

The TLC556ID is available in a 14-SOIC surface mount package. It operates within a temperature range of -40°C to 85°C. Unused inputs should be tied to an appropriate logic level to prevent false triggering. The device minimizes supply current spikes during output transitions, reducing the need for large decoupling capacitors.

This timer IC is suitable for a wide range of applications requiring precise timing and oscillation control, benefiting from its low power consumption and high output current capabilities.