Texas Instruments

CD74HCT4538M  

Multivibrators

CD74HCT4538M Description

The CD74HCT4538M is a high-performance monostable multivibrator IC designed for a wide range of timing applications. Manufactured by Texas Instruments, this device is part of the 74HCT series, known for its robustness and reliability in digital circuits. The CD74HCT4538M features two independent monostable circuits, making it highly versatile for various timing and pulse generation tasks.

CD74HCT4538M Features

• Propagation Delay: The CD74HCT4538M boasts a propagation delay of 23 ns, ensuring fast and precise timing control. This low delay is critical for applications requiring high-speed pulse generation and timing accuracy.
• Logic Type: As a monostable multivibrator, the CD74HCT4538M generates a single output pulse of a specified duration in response to a trigger input. This feature is particularly useful for debouncing switches, generating timing pulses, and creating delays.
• Schmitt Trigger Input: The inclusion of Schmitt trigger input ensures noise immunity and stable operation, even with noisy or slowly changing input signals. This feature enhances the reliability of the device in real-world applications.
• Supply Voltage: The device operates within a supply voltage range of 4.5 V to 5.5 V, making it compatible with standard TTL and CMOS logic levels. This wide voltage range provides flexibility in system design.
• Output Current: The CD74HCT4538M can source and sink up to 4 mA, providing sufficient drive capability for various digital loads.
• Moisture Sensitivity Level (MSL): With an MSL of 1 (Unlimited), the CD74HCT4538M is suitable for surface mount applications without the need for special handling or storage conditions.
• Compliance: The device is REACH unaffected and ROHS3 compliant, ensuring it meets the latest environmental and safety standards.

CD74HCT4538M Applications

The CD74HCT4538M is ideal for a variety of applications where precise timing and pulse generation are required. Some specific use cases include:

• Debouncing Switches: The monostable operation of the CD74HCT4538M can effectively eliminate switch bounce, providing clean and reliable switch signals.
• Timing Circuits: The device can be used to generate precise timing intervals, making it suitable for applications such as timing delays in communication systems, pulse width modulation (PWM), and other timing-sensitive circuits.
• Pulse Generation: The CD74HCT4538M can generate single pulses of a specified duration, which is useful in applications such as strobe generation, trigger circuits, and data synchronization.
• Noise Filtering: The Schmitt trigger input helps in filtering out noise from input signals, ensuring stable and reliable operation in noisy environments.

Conclusion of CD74HCT4538M

The CD74HCT4538M from Texas Instruments is a versatile and reliable monostable multivibrator IC, offering fast propagation delay, noise immunity, and wide supply voltage range. Its dual independent circuits provide flexibility in design, making it suitable for a wide range of timing and pulse generation applications. The device's compliance with environmental and safety standards further enhances its appeal for modern electronics design. Whether used for debouncing switches, generating timing pulses, or filtering noisy signals, the CD74HCT4538M is an excellent choice for engineers seeking a high-performance monostable multivibrator.

CD74HCT4538M Documents

Download datasheets and manufacturer documentation for CD74HCT4538M

Datasheets :

CD54,74HC(T)4538      

PCN Obsolescence/ EOL :

Mult Dev EOL 30/Aug/2023      

HTML Datasheet :

CD54,74HC(T)4538      

PCN Design/Specification :

Mult Devices Font 21/Apr/2018