TS556ID

Overview

The TS556ID is a dual-channel CMOS timer manufactured by STMicroelectronics, housed in a 14-pin SO package. It operates within a supply voltage range of 2V to 16V and supports an operating temperature range from -40°C to 125°C. The device features two independent timers with a maximum propagation delay of 100ns at 10pF load. It delivers low power consumption, typically 220μA at 5V, and supports high-frequency astable operation up to 2.7MHz. The output stage is compatible with TTL, CMOS, and logic MOS standards.

Feature Summary

• Dual-channel CMOS timer architecture with 14-pin SO surface-mount packaging
• Wide supply voltage range of 2V to 16V and extended industrial temperature range (-40°C to 125°C)
• Low quiescent current consumption (typ. 220μA at 5V) with reduced supply current spikes during transitions
• High input impedance (10^12 Ω) and maximum astable frequency of 2.7 MHz

Applications

• Precision timing circuits requiring low power consumption
• Frequency generation and pulse width modulation applications
• Timing delays in industrial control systems operating at extreme temperatures

Procurement Notes

Verify the specific suffix 'ID' against the manufacturer's official datasheet to confirm the exact temperature grade and package variant. Ensure compatibility with existing PCB footprints for the 14-SOIC package. Check for end-of-life status or alternative recommendations if the component is discontinued.

Selection Notes

Select this component when dual independent timers are required in a single surface-mount package. It serves as a pin-compatible replacement for bipolar NE556 devices while offering significantly lower power consumption and higher maximum frequencies. Verify that the 2V minimum supply voltage meets the system requirements.

Part Context

The TS556ID belongs to the TS556 series of low-power dual CMOS timers. This series is designed to replace standard bipolar timers like the NE556, providing improved performance in terms of power efficiency and speed. The 'I' suffix typically denotes the industrial temperature range extension compared to commercial variants.

Replacement Considerations

The TS556ID is functionally compatible with the bipolar NE556. Other variants in the TS556 family, such as TS556CD or TS556CN, may serve as alternatives depending on package preference (SO vs DIP) and temperature rating requirements.