Monostable multivibrators, also known as one-shot multivibrators, are a type of electronic circuit that can be used as a timer. They have one stable and one unstable state. The unstable state is caused by a trigger pulse. This state is transient, so the circuit always returns to stability after a fixed time has elapsed.
Generally, monostable multivibrator circuits are composed of two transistors, coupled with one resistor-capacitor network and one resistor network. These networks are what determines the length of time before the circuit returns to its stable state, after being triggered.
What are monostable multivibrators used for?
Monostable multivibrators are used to produce a specific timed delay within a circuit. Therefore, they can broadly be used as timers or as pulse detectors in electronic equipment.
Types of monostable multivibrators
There are two types of monostable multivibrators:
Retriggerable monostable multivibrators will remain in the unstable state with repeated application of the trigger pulse.
Non-retriggerable monostable multivibrators are unaffected by further trigger pulses, and will remain in the unstable state only for the predetermined period of time.
Description:
Texas Instruments range of Encoders, Decoders, Multiplexers, Demultiplexers
and Analogue Switches from the 4000 Series CMOS Logic Family. CMOS Family devicesWide operating voltage range: 3 to 18V.
Description:
Texas Instruments Complex Function ICs from the 4000
Series CMOS Logic Family includes 7-segment LCD Latch/Decoder/Drivers, Magnitude Comparators and Phase Locked Loop (PLL) ICs. CMOS Family devicesWide operating voltage range: 3 to 18V.
Description:
Texas Instruments Monostable Multivibrators and Voltage Controlled Oscillators
from the 74LS Family of Low Power Schottky Logic ICs. The 74LS Family use bipolar junction technology coupled with Schottky diode clamps to achieve operating speeds equal to the original 74TTL family ...
Description:
Dual retriggerable precision monostable multivibrator, The 74HC4538 is
a dual retriggerable-resettable monostable multivibrator. Each multivibrator has two trigger/retrigger inputs (nA and nB), a direct reset input (nCD), two complementary outputs (nQ and nQ), and two pins (nREXT/CEXT and nCEXT) for ...
