ICM7555IPAZ: CMOS RC Timer, 1MHz, 2V to 18V, Low Power

Renesas

The ICM7555IPAZ is a general-purpose CMOS RC timer that offers significant improvements over traditional SE/NE 555/556 timers. This component is designed for precision timing, pulse generation, and sequential timing applications, among others. It operates with a supply voltage range from 2V to 18V and consumes a low supply current of 60µA, making it suitable for battery-operated devices.

Unlike its bipolar counterparts, the ICM7555IPAZ does not require decoupling of the Control Voltage for stable operation, and it does not crowbar the supply current during output transitions. This timer is capable of operating in both astable and monostable modes, with an adjustable duty cycle. Its high output source/sink driver can drive TTL/CMOS loads, making it versatile for a wide range of applications.

• Supply Voltage: 2V to 18V
• Supply Current: 60µA
• Operating Frequency: Up to 1MHz
• Low Threshold, Trigger, and Reset Currents
• Temperature Stability: 0.005%/°C at +25°C
• Adjustable Duty Cycle
• Operates in Astable and Monostable Modes
• High Output Source/Sink Driver Capability

• Precision Timing
• Pulse Generation
• Sequential Timing
• Time Delay Generation
• Pulse Width Modulation
• Pulse Position Modulation
• Missing Pulse Detection

CMOS RC timers, such as the ICM7555IPAZ, are versatile integrated circuits used for timing and oscillator functions in electronic devices. These components can generate accurate time delays or frequencies, which are essential in a wide range of applications from simple LED blinkers to complex communication systems.

When selecting a CMOS RC timer, engineers should consider parameters such as operating voltage range, current consumption, frequency capabilities, and the specific timing modes supported by the device. The choice of a timer also depends on the application's power requirements and the need for precision in timing.

The ICM7555IPAZ offers low power consumption and a wide operating voltage range, making it suitable for battery-powered applications. Its ability to operate without the need for decoupling capacitors for the Control Voltage and to avoid crowbarring of the supply current during output transitions provides a stable and reliable timing solution.

In addition to technical specifications, the application's environmental conditions, such as temperature, may influence the choice of a timer. The ICM7555IPAZ's temperature stability ensures consistent performance across a wide range of operating conditions.