LMC555CN/NOPB

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The LMC555CN/NOPB (National Semiconductor Corporation) is a programmable timer and oscillator that can be used in a variety of clock/timing applications. The programmable device is a member of the Texas Instruments (TI) company family of Low-Power CMOS Programmable Timers and Oscillators. The 555CN/NOPB is a CMOS device that features low-power performance, is self-contained, and can generate both square waveform output and programmable frequency and duty cycle. The device is typically used in applications such as clock/calendar circuits, audio circuit controls and alarms, motor control, security systems, and piezoelectric control.

The LMC555CN/NOPB works by employing a single current source and a comparator with hysteresis connected to an external RC timing network. The current source provides the reference voltage, and the voltage at the comparing output of the comparator, vs the reference voltage, is used to generate the external timing signals. The external circuit can be configured as either an astable multivibrator for generating pulses at a given duty cycle, or as a monostable oscillator for one-time output pulse generation.

The LMC555CN/NOPB is designed to provide low power performance, with the devices\' minimum power requirements coming from the external timing circuits. The device features a total power consumption of only 1 mA typically and has an operation temperature range of 0°C to 70°C. The device is also designed to withstand transients up to 10V on power supply lines and input/output lines.

The device\'s adjustable range includes both an adjustable frequency/duty cycle and an adjustable pulse width, and ranges from a minimum frequency of 0.5 Hz to a maximum of 1 MHz. The device also features an output delay option that can be used to control the output pulse\'s time delay relative to the input trigger pulse.

The CMOS technology used in the LMC555CN/NOPB provides improved noise immunity and robust operation in electrostatic sensitive environments. Additionally, the device also features an extremely low power consumption and a wide operating temperature range. The device can be used with a wide variety of operating voltages, from 1.2V to 18V, and is designed to support multiple timing applications.

The LMC555CN/NOPB is an ideal solution for applications that require precise timing, such as in the timing of automotive engine fuel injection and equipment, as well as for synchronized digital systems. The device is also used in applications that require an adjustable waveform, such as in switch-mode power supplies and in audio or video equipment. The LMC555CN/NOPB also offers a cost-effective solution for remote control and automotive applications, providing a compact and reliable solution.

In summary, the LMC555CN/NOPB is a programmable timer and oscillator that is suitable for a wide range of clock/timing applications. The device offers a low power consumption and wide operating temperature range, and allows for an adjustable frequency/duty cycle, adjustable pulse width, and an output delay option. The device is ideal for applications requiring an adjustable waveform, as well as for automotive and remote control applications.

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