TLC555IP datasheet by Texas Instruments

TLC555IP Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the TLC555IP?
  The TLC555IP can operate up to 2.1 MHz, but the maximum frequency is dependent on the values of the external resistors and capacitors used in the circuit.
• How do I ensure the TLC555IP oscillator starts reliably?
  To ensure reliable start-up, a capacitor (typically 10nF to 100nF) should be connected between the control voltage pin (pin 5) and ground. This capacitor helps to filter out noise and ensures a stable start-up.
• What is the purpose of the control voltage pin (pin 5)?
  The control voltage pin (pin 5) is used to adjust the oscillator frequency. By applying a voltage to this pin, the frequency of the oscillator can be modified. This pin can also be used to synchronize the oscillator with an external clock signal.
• How do I calculate the timing capacitor value for a specific frequency?
  The timing capacitor value can be calculated using the formula: C = (1.44 * R1 * R2) / (f * (R1 + R2)), where C is the capacitance, R1 and R2 are the resistors, and f is the desired frequency.
• What is the maximum output current of the TLC555IP?
  The TLC555IP can source or sink up to 200mA of current, making it suitable for driving small loads such as LEDs or relays.