TLC555CD

Programmable Timers And Oscillators Overview

The TLC555CD is a single CMOS timer integrated circuit manufactured by Texas Instruments, part of the LinCMOS™ family. It operates within a supply voltage range of 2V to 15V and supports frequencies up to 2.1MHz. The device features low power consumption with a typical supply current of 360µA and provides an output sink current of 100mA. Housed in an 8-SOIC surface-mount package, it functions as a direct pin-compatible replacement for standard bipolar 555 timers while offering improved timing precision due to high input impedance.

Programmable Timers And Oscillators Feature Summary

• LinCMOS™ technology enabling low power operation (360µA) and rail-to-rail output swing
• Direct pin-compatible replacement for NE555 with identical functional layout
• High-frequency capability with oscillation rates up to 2.1MHz
• Strong output drive capability with 100mA sink current

Programmable Timers And Oscillators Applications

• Precision timing and pulse generation circuits
• Time delay and sequential timing applications
• Pulse width modulation (PWM) controllers
• Linear ramp generator designs

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix 'CD' against the manufacturer's datasheet to confirm the commercial temperature grade (0°C to 70°C) and SOIC package variant. Ensure ordering documentation matches the exact part number to distinguish from industrial grade or through-hole alternatives like the TLC555CP.

Programmable Timers And Oscillators Selection Notes

Select the TLC555CD when a surface-mount solution is required for 555-based designs. It is suitable for battery-powered applications due to its low quiescent current compared to bipolar counterparts. Verify that the load requirements do not exceed the 100mA sink limit and that the operating environment remains within the commercial temperature range.

Programmable Timers And Oscillators Part Context

This component belongs to the TLC555 series of low-power CMOS timers. It shares the foundational architecture of the classic 555 timer but utilizes Texas Instruments' LinCMOS process to reduce power dissipation and allow operation at lower voltages. The series includes variants such as the dual-timer TLC556 and different package options like PDIP and SOIC.

Programmable Timers And Oscillators Replacement Considerations

The TLC555CD is functionally interchangeable with the NE555, LM555, and ICM7555. When substituting, note that the CMOS version draws significantly less current but may have different noise immunity characteristics compared to bipolar versions.