The HEF4528BT is a dual retriggerable monostable multivibrator with Schmitt-trigger input logic from Nexperia. Each multivibrator features an active HIGH trigger input (A), an active LOW trigger input (B), a direct clear input (CD), an output (Q) and its complement (Q\). The output pulse width is determined by the external timing components Rx and Cx.

Applications

• Timers
• Pulse Delay Circuits
• Pulse Stretching
• Missing Pulse Detection
• Frequency Discriminators

Features

• Dual retriggerable monostable multivibrators
• Schmitt-trigger input logic on trigger inputs
• Pulse width adjustment range
• Fully static operation
• Standardized symmetrical output characteristics
• 100% tested for quiescent current at 20 V
• Specified from -40 °C to +85 °C

Benefits

• Provides stable and accurate timing signals.
• Retriggerable function allows for extended pulse widths.
• Schmitt-trigger inputs improve noise immunity.
• Wide operating temperature range enables use in harsh environments.
• Easy integration into digital circuits.

Additional Details

The HEF4528BT operates within a supply voltage range of 3 V to 15 V. The output pulse width is determined by the external resistor (Rx) and capacitor (Cx) values. The device is packaged in a SO16 package. The Schmitt-trigger action makes the circuit highly tolerant to slower rise and fall times on the trigger inputs.