PHILIPS 74HC/HCT5555 Programmable delay timer with oscillator handbook

The document describes the features and characteristics of the 74HC/HCT5555 programmable delay timer with oscillator. It features positive and negative edge triggering, retriggerable or non-retriggerable modes, programmable delay with a minimum of 100ns, and a divide-by range of 2 to 224. The device has a direct reset function to terminate output pulses, Schmitt trigger action on trigger inputs, direct drive for a power transistor, low power consumption, and high precision digital timing. It is suitable for applications such as motor control, delay circuits, automotive applications, etc.

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