Nexperia 74HC5555
The 74HC5555 is a precision programmable delay timer which consist of: • 24-stage binary counter • integrated oscillator (using external timing components) • retriggerable/non-retriggerable monostable • automatic power-ON reset • output control logic • oscillator control logic • overriding asynchronous master reset (MR). The 74HC5555 inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.FEATURES AND BENEFITS
● Supply voltage range from 2.0 V to 6.0 V● CMOS input levels
● Positive and negative edge triggered
● Retriggerable or non-retriggerable
● Programmable delay: – minimum: 100 ns – maximum: depends on input frequency and division ratio
● Divide-by range of 2 to 224
● Direct reset terminates output pulse
● Very low power consumption in triggered start mode
● 3 oscillator operating modes: – RC oscillator – Crystal oscillator – External oscillator
● Device is unaffected by variations in temperature and VCC when using an external oscillator
● Automatic power-ON reset
● Schmitt trigger action on both trigger inputs
● Direct drive for a power transistor
● High precision due to digital timing
● Complies with JEDEC standard no. 7 A
● ESD protection: – HBM EIA/JESD22-A114A exceeds 2000 V – MM EIA/JESD22-A115-A exceeds 200 V
● Specified from -40 °C to +85 °C and -40 °C to +125 °C Nexperia 74HC5555 Programmable delay timer with oscillator 3
APPLICATIONS
● Motor control● Delay circuits
● Precision timing
● Domestic appliances 4 Ordering information Table 1.