TLC556CN

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The TLC556CN is a versatile, low-cost integrated circuit used in many applications where accurate timing and pulse generation is necessary. It provides both the basic timing functions of a free running oscillator, with time-delay and pulse generation capabilities. It operates over a wide range of voltages, from 3 to 18V, and accepts a wide range of temperatures, from -55°C to +125°C. The TLC556CN is also characterized by low-power consumption, good noise immunity, and exceptional stability.

The application field of the TLC556CN is broad and varied, as its features make it suitable for a wide range of applications. Its range of timing functions is ideal for use in data acquisition or motion control systems. It can be used for tasks such as waveform shaping for data transmission, or for the sequential control of in-circuit motors. It can be used to both trigger and provide timing for strobe bulbs or other electromechanical components. Its low-power consumption also makes it suitable for use in battery-powered systems.

The TLC556CN is a dual timer, which means it contains two independent circuits, each with its own inputs and outputs. This allows it to be used for time-delay, pulse-width modulation (PWM), pulse-position and frequency-modulation (FM) applications, together with single-shot and retriggerable capability. The basic operating principle is based on charging and discharging an internal capacitor through a resistance network, to create a predetermined time interval.

In time-delay and single-shot applications, the capacitor is charged through an external resistor, and the time interval and output level is predetermined by the values of the resistance and capacitor. When the voltage of the capacitor reaches two-thirds of the supply voltage, it causes the output to go high. When the voltage across the capacitor falls to one-third of the supply voltage, the output is cleared. The output is then retriggered when the voltage across the capacitor again reaches two-thirds of the supply voltage.

The TLC556CN can also be used for pulse-width modulation applications. In this mode of operation, an external capacitor is again charged from an external resistor, and when it reaches two-thirds of the supply voltage, the output goes high. However, the voltage across the capacitor is then monitored, and when it reaches one-third of the supply voltage, the output is cleared. When the voltage of the capacitor reaches two-thirds of the supply voltage again, the output is retriggered.

The TLC556CN is also capable of pulse-position and frequency-modulation applications. In this mode of operation, an internal current source is connected to the external capacitor. When the voltage across the capacitor reaches one-third of the supply voltage, the output is cleared and the internal current is synchronized with the external resistor, by which the output frequency is adjusted. When the voltage across the capacitor reaches two-thirds of the supply voltage, the output is retriggered, and the output frequency is adjusted again.

The TLC556CN is an excellent choice for a variety of applications that require accurate timing and pulse generation. Its wide range of voltage, temperature, low-power consumption, and exceptional stability make it suitable for many challenging real-world tasks. Its dual timer circuitry makes it suitable for a wide range of sophisticated time-delay, single-shot, pulse-width modulation, pulse-position and frequency-modulation applications. With its versatility and excellent performance, the TLC556CN is sure to be an invaluable component in any design.

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