Logic - Multivibrators

Category Introduction

Multivibrators are simple two-state devices commonly considered digital logic components, though their typical manners of use are largely analog in character. Monostable types, also called "one-shots", have one stable state; though application of a trigger signal can cause them to leave this state for a period of time usually determined by the value of a connected capacitor. These are useful for applications such as de-bouncing switch contacts. Astable types have no stable state, and transition between two states continuously at a frequency which again is usually determined by the value of a connected capacitor.

Product List

207 Items

Mfr Part #	Quantity Available	UnitPrice	Series	Packaging	Product Status	Logic Type	Independent Circuits	Schmitt Trigger Input	Propagation Delay	Current - Output High, Low	Voltage - Supply	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package
74HC123D,653 IC MULTIVIBRATOR 65NS 16SO Nexperia USA Inc.	408	$0.47	74HC	Tape & Reel (TR)	Active	Monostable	2	No	65 ns	5.2mA, 5.2mA	2 V ~ 6 V	-40°C ~ 125°C	Surface Mount	16-SOIC (0.154", 3.90mm Width)	16-SO
74HC123D,652 IC MULTIVIBRATOR 65NS 16SO Nexperia USA Inc.	341	$0.00	74HC	Bulk	Obsolete	Monostable	2	No	65 ns	5.2mA, 5.2mA	2 V ~ 6 V	-40°C ~ 125°C	Surface Mount	16-SOIC (0.154", 3.90mm Width)	16-SO
CD4098BM96 IC MULTIVIBRATOR 100NS 16SOIC Texas Instruments	1,294	$0.56	4000B	Tape & Reel (TR)	Active	Monostable	2	No	100 ns	6.8mA, 6.8mA	3 V ~ 18 V	-55°C ~ 125°C	Surface Mount	16-SOIC (0.154", 3.90mm Width)	16-SOIC
CD14538BM96 IC MULTIVIBRATOR 100NS 16SOIC Texas Instruments	489	$0.54	4000B	Tape & Reel (TR)	Active	Monostable	2	Yes	100 ns	6.8mA, 6.8mA	3 V ~ 18 V	-55°C ~ 125°C	Surface Mount	16-SOIC (0.154", 3.90mm Width)	16-SOIC
74HC123D IC MULTIVIBRATOR 40NS 16SOIC Toshiba Semiconductor and Storage	424	$0.61	74HC	Tape & Reel (TR)	Active	Monostable	2	Yes	40 ns	5.2mA, 5.2mA	2 V ~ 6 V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.154", 3.90mm Width)	16-SOIC
SN74LV123ADR IC MULTIVIBRATOR 13NS 16SOIC Texas Instruments	794	$0.65	74LV	Tape & Reel (TR)	Active	Monostable	2	Yes	13 ns	12mA, 12mA	2 V ~ 5.5 V	-40°C ~ 125°C	Surface Mount	16-SOIC (0.154", 3.90mm Width)	16-SOIC
SN74AHCT123ADR IC MULTIVIBRATOR 5.3NS 16SOIC Texas Instruments	943	$0.64	74AHCT	Tape & Reel (TR)	Active	Monostable	2	Yes	5.3 ns	8mA, 8mA	4.5 V ~ 5.5 V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.154", 3.90mm Width)	16-SOIC
CD74HC123MT IC MULTIVIBRATOR 25NS 16SOIC Texas Instruments	530	$1.15	74HC	Tape & Reel (TR)	Active	Monostable	2	No	25 ns	5.2mA, 5.2mA	2 V ~ 6 V	-55°C ~ 125°C	Surface Mount	16-SOIC (0.154", 3.90mm Width)	16-SOIC
CD74HC221E IC MULTIVIBRATOR 18NS 16DIP Texas Instruments	1,031	$0.79	74HC	Tube	Active	Monostable	2	Yes	18 ns	5.2mA, 5.2mA	2 V ~ 6 V	-55°C ~ 125°C	Through Hole	16-DIP (0.300", 7.62mm)	16-PDIP
SN74LV123APWT IC MULTIVIBRATOR 13NS 16TSSOP Texas Instruments	222	$1.24	74LV	Tape & Reel (TR)	Active	Monostable	2	Yes	13 ns	12mA, 12mA	2 V ~ 5.5 V	-40°C ~ 125°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
CD4047BE IC MULTIVIBRATOR 80NS 14DIP Texas Instruments	966	$0.86	4000B	Tube	Active	Astable, Monostable	1	No	80 ns	6.8mA, 6.8mA	3 V ~ 18 V	-55°C ~ 125°C	Through Hole	14-DIP (0.300", 7.62mm)	14-PDIP
SN74LS123NS IC MULTIVIBRATOR 34NS 16SO Texas Instruments	630	$0.95	74LS	Tube	Active	Monostable	2	No	34 ns	400µA, 8mA	4.75 V ~ 5.25 V	0°C ~ 70°C	Surface Mount	16-SOIC (0.209", 5.30mm Width)	16-SO
CD14538BM IC MULTIVIBRATOR 100NS 16SOIC Texas Instruments	377	$1.05	4000B	Tube	Active	Monostable	2	Yes	100 ns	6.8mA, 6.8mA	3 V ~ 18 V	-55°C ~ 125°C	Surface Mount	16-SOIC (0.154", 3.90mm Width)	16-SOIC
CD4047BM IC MULTIVIBRATOR 80NS 14SOIC Texas Instruments	64	$1.34	4000B	Tube	Active	Astable, Monostable	1	No	80 ns	6.8mA, 6.8mA	3 V ~ 18 V	-55°C ~ 125°C	Surface Mount	14-SOIC (0.154", 3.90mm Width)	14-SOIC
SN74121D IC MULTIVIBRATOR 45NS 14SOIC Texas Instruments	182	$4.52	7400	Tube	Active	Monostable	2	No	45 ns	400µA, 16mA	4.75 V ~ 5.25 V	0°C ~ 70°C	Surface Mount	14-SOIC (0.154", 3.90mm Width)	14-SOIC
SN74121N IC MULTIVIBRATOR 45NS 14DIP Texas Instruments	182	$5.13	7400	Tube	Active	Monostable	2	No	45 ns	400µA, 16mA	4.75 V ~ 5.25 V	0°C ~ 70°C	Through Hole	14-DIP (0.300", 7.62mm)	14-PDIP
SN74123N IC MULTIVIBRATOR 22NS 16DIP Texas Instruments	106	$5.80	7400	Tube	Active	Monostable	2	No	22 ns	800µA, 16mA	4.75 V ~ 5.25 V	0°C ~ 70°C	Through Hole	16-DIP (0.300", 7.62mm)	16-PDIP
MC14538BDTR2G IC MULTIVIBRATOR 95NS 16TSSOP onsemi	367	$0.90	4000B	Tape & Reel (TR)	Active	Monostable	2	Yes	95 ns	8.8mA, 8.8mA	3 V ~ 18 V	-55°C ~ 125°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
74HCT123D/AU118 IC MULTIVIBRATOR NXP USA Inc.	5,432	$0.14	74HCT	Bulk	Active	Monostable	2	Yes	26 ns	4mA, 4mA	4.5 V ~ 5.5 V	-40°C ~ 125°C	Surface Mount	16-SOIC (0.154", 3.90mm Width)	16-SO
74HC4538D/S206118 IC MULTIVIBRATOR NXP USA Inc.	3,222	$0.15	74HC	Bulk	Active	Monostable	2	No	25 ns	5.2mA, 5.2mA	2 V ~ 6 V	-40°C ~ 125°C	Surface Mount	16-SOIC (0.154", 3.90mm Width)	16-SO

About Multivibrator

What are Multivibrator?

Multivibrator

Multivibrators are fundamental electronic circuits used to implement a variety of timing and waveform generation functions in digital logic systems. These circuits are designed to produce square waveforms and can switch between two states, making them essential for generating clock signals, pulse generation, and timing applications. The basic operating principle of a multivibrator involves the use of feedback to create oscillations, where the circuit alternates between its two states, either continuously or in response to an external trigger. This oscillation is achieved through the charging and discharging of capacitors, which control the timing intervals of the output waveform.

Types of Multivibrator

Astable Multivibrator

An astable multivibrator is a free-running oscillator that continuously switches between its two states without any external triggering. It is commonly used for generating square waves and clock pulses. The frequency of oscillation is determined by the values of the resistors and capacitors in the circuit, making it highly customizable for different applications.

Monostable Multivibrator

A monostable multivibrator, also known as a one-shot multivibrator, has one stable state and one unstable state. It requires an external trigger to switch to its unstable state, where it remains for a predetermined period before returning to its stable state. This type is ideal for applications requiring a single pulse of a specific duration, such as timers and pulse-width modulation.

Bistable Multivibrator

A bistable multivibrator, or flip-flop, has two stable states and can be switched between them using external inputs. It is used for storing binary information, making it a critical component in memory devices and digital counters. The bistable multivibrator is the foundation for more complex digital circuits such as latches and registers.

How to choose Multivibrator?

When selecting a multivibrator, several key parameters must be considered:

Frequency Range: Determine the required frequency range for your application and ensure the multivibrator can operate within those limits.
Power Supply Voltage: Check compatibility with your system's power supply voltage to ensure proper operation.
Output Drive Capability: Consider the load that the multivibrator will drive and ensure it can provide sufficient output current.
Temperature Range: Evaluate the operating environment and select a multivibrator that can withstand the temperature conditions.
Package Type: Choose a package that fits your design requirements, whether it be through-hole or surface-mount.

To evaluate product quality and reliability, review supplier datasheets for specifications, check for compliance with industry standards, and consider customer reviews and ratings. Environmental factors such as humidity and electromagnetic interference should also be considered, and proper installation guidelines should be followed to ensure optimal performance.

Applications of Multivibrator

Consumer Electronics

In consumer electronics, multivibrators are used in devices such as televisions and radios for generating clock signals and timing sequences. They help synchronize operations and ensure the smooth functioning of digital circuits within these devices.

Automotive Industry

Multivibrators play a crucial role in automotive electronics, where they are used in applications like engine control units (ECUs) and anti-lock braking systems (ABS). They provide precise timing and control signals necessary for the operation of these systems.

Telecommunications

In telecommunications, multivibrators are employed in signal processing and modulation tasks. They help generate the necessary timing signals for data transmission and reception, ensuring reliable communication over networks.

Medical Devices

Medical devices such as pacemakers and diagnostic equipment utilize multivibrators for timing and pulse generation. They ensure accurate timing and control of critical functions, contributing to the reliability and effectiveness of medical treatments.

Industrial Automation

In industrial automation, multivibrators are used in control systems and robotics for generating timing signals and controlling processes. They enable precise control and synchronization of automated tasks, enhancing efficiency and productivity in industrial settings.