![74VHC221ASJX Allicdata Electronics](https://files.allicdata.com/upload/common/default.jpg)
Allicdata Part #: | 74VHC221ASJX-ND |
Manufacturer Part#: |
74VHC221ASJX |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | ON Semiconductor |
Short Description: | MULTIVIBRATOR DUAL MONO 16SOP |
More Detail: | Monostable Multivibrator 8.1ns 16-SOP |
DataSheet: | ![]() |
Quantity: | 1000 |
1 +: | 0.00000 |
Series: | 74VHC |
Packaging: | Tape & Reel (TR) |
Part Status: | Obsolete |
Logic Type: | Monostable |
Independent Circuits: | 2 |
Schmitt Trigger Input: | Yes |
Propagation Delay: | 8.1ns |
Current - Output High, Low: | 8mA, 8mA |
Voltage - Supply: | 2V ~ 5.5V |
Operating Temperature: | -40°C ~ 85°C |
Mounting Type: | Surface Mount |
Package / Case: | 16-SOIC (0.209", 5.30mm Width) |
Supplier Device Package: | 16-SOP |
Base Part Number: | 74VHC221 |
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74VHC221ASJX -Logic - Multivibrators Application Field and Working Principle
A 74VHC221ASJX is a device used to generate switching or clock signals. It is a type of multivibrator, and is part of the 74VHC series from NXP Semiconductors. A multivibrator is a two-terminal circuit whose output signals are of two distinct states, for example, 0 and 1, and which performs a repetitive sequence of operations in response to a given set of external inputs and internal timers.
The 74VHC221ASJX is a dual monostable multivibrator with retriggerable outputs, meaning that the output state can be retriggered any number of times by the input control signal, causing the output to remain in that state for the chosen timing duration. This feature can be used in applications where frequent retriggering may be required. It has 10 V minimum/3.3 to 5.5 V maximum operating voltage and can be used in high-speed circuits in both consumer and automotive electronics.
The 74VHC221ASJX has two independent one-shot (monostable) multivibrator circuits with retriggerable outputs, meaning that the output pulse in one can be retriggered by the other. This means that both outputs can be set to remain in their current state if the input control signal is active for longer than a given set of timing parameters.
The working principle of a monostable multivibrator is simple. It is a combination of two amplifiers with an RC (resistor-capacitor) network between the output of the first and the input of the second amplifier. It has two stable states; one is the quiescent state (Q), where its output is high (1), and the other is the triggered state (T), where its output is low (0). The output of the first amplifier determines the type of the output signal; when it is 0, the output is high (1), and when it is 1, the output is low (0). When the input control signal is applied, the output of the first amplifier is switched to 1, thus trigger the state change.
The 74VHC221ASJX has two independent one-shot (monostable) multivibrator circuits with retriggerable outputs, meaning that the output pulse in one can be retriggered by the other. This means that both outputs can be set to remain in their current state if the input control signal is active for longer than a given set of timing parameters. It has a 10 V minimum/3.3 to 5.5 V maximum operating voltage and can be used in high-speed circuits in both consumer and automotive electronics.
The 74VHC221ASJX is an effective device for applications requiring a retriggerable one-shot multivibrator, such as interface and communications, power-supply sequencing, automotive control and monitoring systems, game controllers, and computer peripherals. The device can also be used for clock generation, pattern-generation, filtering and shaping of signals, pulsed-amplitude modulation, encryption, and automatic frequency-control circuits.
In summary, the 74VHC221ASJX is a retriggerable monostable multivibrator with a wide range of applications in consumer and automotive electronics. It is a useful device for generating switching or clock signals, and can also be used for power-supply sequencing, gaming controllers, and other control, communications and interface applications.
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