CD14538BE

CD14538BE is a CMOS dual precision monostable multivibrator. It provides stable retriggerable/resettable one-shot operation for any fixed-voltage timing application. An external resistor and an external capacitor control the timing and accuracy for the circuit. Adjustment of RX and CX provides a wide range of output pulse widths from the Q and Q\ terminals. The time delay from trigger input to output transition (trigger propagation delay) and the time delay from reset input to output transition (reset propagation delay) are independent of RX and CX. Precision control of output pulse widths is achieved through linear CMOS techniques. Leading-edge-triggering (+TR) and trailing-edge-triggering (-TR) inputs are provided for triggering from either edge of an input pulse. Applications include pulse delay and timing and pulse shaping.

• An unused RESET input should be tied to VDD
• Trigger and reset propagation delays independent of RX, CX
• Triggering from leading or trailing edge
• Separate resets, replaces CD4538B Type
• Wide range of output-pulse widths
• Schmitt-trigger input allows unlimited rise and fall times on +TR and -TR inputs
• 100% tested for maximum quiescent current at 20 V
• Standardized, symmetrical output characteristics
• Supply voltage range from 3 to 18V (at full operating temperature)
• 16 pin PDIP package, operating temperature range from -55 to 125°C

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Retriggerable one-shot multi-vibrator has an output pulse width which is extended one full time period (T) after application of the last trigger pulse.