TS555CD

Overview

The TS555CD is a single-channel CMOS timer manufactured by STMicroelectronics, housed in an 8-pin SOIC package. It operates within a supply voltage range of +2 V to +16 V and supports surface-mount installation. The device features a maximum propagation delay of 100 ns at 5 V and can achieve a maximum astable frequency of 2.7 MHz. Typical supply current is 110 μA at 5 V and 90 μA at 3 V. It provides high input impedance (10^12 Ω) and output drive capabilities of 50 mA (high) and -10 mA (low). The component functions as a standard timer compatible with bipolar NE555 pinouts.

Feature Summary

• CMOS technology enabling low power consumption (110 μA typ at 5 V)
• High-frequency operation up to 2.7 MHz
• Pin-to-pin functionally-compatible with bipolar NE555
• Wide operating voltage range from +2 V to +16 V

Applications

• Timing delays in monostable mode
• Programmable oscillations in astable mode
• Frequency generation circuits

Procurement Notes

Verify the specific suffix for the TS555CD variant regarding temperature grade and packaging format before procurement. Confirm availability status as some listings indicate end-of-life or limited stock conditions. Ensure the selected package matches the required PCB footprint for SOIC-8 mounting.

Selection Notes

Select the TS555CD when low power consumption and high-frequency stability are required compared to standard bipolar timers. The wide voltage range allows compatibility with 3.3 V, 5 V, and 12 V systems. Consider the 100 ns propagation delay and 2.7 MHz limit for timing precision requirements.

Part Context

The TS555CD belongs to the TS555 family of low-power single CMOS timers. This series offers improved performance over traditional bipolar timers, including reduced supply current spikes during output transitions and higher input impedance, allowing for smaller timing capacitors.

Replacement Considerations

The TS555CD is functionally compatible with the NE555. Other variants in the same family include TS555IDT and TS555CN.