74121 IC Description TTL Monostable Multivibrator IC


Posted on Feb 5, 2014

The 74L121 and 74L122 ICs pin out diagram works any any style 74xx121 or 74xx122 DIP chip, but the timing graphs are only valid for the TTL families indicated. The 74121 shown above provides a single Monostable Multivibrator function. While the 74122 shown below provides a retriggerable Monostable Multivibrator function with clear. A Monostable M


74121 IC Description TTL Monostable Multivibrator IC
Click here to download the full size of the above Circuit.

ultivibrator is also called a One Shot. An external timing capacitor may be connected between Cext and Rext/Cext. For accurate repeatable pulse widths connect an external resistor between Rext/Cext and Vcc leaving Rint open [unconnected]. To obtain variable pulse widths connect a variable resistance between Rint or Rext/Cext and Vcc. The first chart works for either the 74L121 or 74L122; however, the second chart only applies to the 74L121. Use this link 74121 / 74122 Pulse Width Charts to find enlarged versions of the two charts above and an external timing capacitor chart for the 74122.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    High-speed-sample-and-hold
    Tremolo
    Mosfet Amplifier OTL 100W by K1058J162
    Bit Bender
    Switching (transformerless) DC/AC 12V/230V 150W modified sine wave inverter
    emergency light circuit diagram
    Subsumption Architecture
    Digital Voltmeter and Ammeter Using CA3161E and CA3162E
    Hi-fi AM detector
    Long-range high-frequency transistor FM transmitter circuit diagram
    Table circuit voltage electric lines



    Top