The TC74VHC221AFT is a high-speed CMOS Dual Monostable Multivibrator with Schmitt-Trigger Inputs manufactured by Toshiba Semiconductor and Storage. This device provides two independent monostable multivibrators, each triggered by either the positive or negative edge of an input pulse. The use of Schmitt-trigger inputs allows for operation with slow or noisy input signals. Fabricated with silicon gate CMOS technology, it combines high-speed performance with low power consumption.

Applications:

• Pulse generation
• Timing circuits
• Delay lines
• Pulse stretching
• Debouncing

Features:

• High-speed operation: tpd = 7.5 ns (typ.) at VCC = 5 V
• Schmitt-trigger inputs for noise immunity
• Retriggerable and non-retriggerable operation
• Pulse width control via external resistor and capacitor
• Wide operating voltage range: VCC = 2 V to 5.5 V
• Low power dissipation: ICC = 4 μA (max) at VCC = 5 V

Benefits:

• Accurate pulse generation for timing and control applications.
• Reliable operation in noisy environments due to Schmitt-trigger inputs.
• Versatile pulse width adjustment using external components.
• Flexibility in operation with retriggerable and non-retriggerable modes.
• Low power consumption for energy-efficient designs.
• Wide operating voltage range for compatibility with various systems.

Additional Details:

The TC74VHC221AFT is supplied in a TSSOP package. The output pulse width is determined by the external resistor (Rext) and capacitor (Cext) connected to the RX/CX inputs. The device can be triggered by either the A or B input, with the A input being positive-edge triggered and the B input being negative-edge triggered. A Clear (CLR) input is provided to terminate the output pulse. The device operates over a wide temperature range, making it suitable for various industrial and commercial applications. The inputs are equipped with protection circuits against static discharge.