CD74HC4538PWT

Multivibrators Overview

The CD74HC4538PWT is a dual retriggerable precision monostable multivibrator manufactured by Texas Instruments. It belongs to the HC logic series and operates within a supply voltage range of 2 V to 6 V. The device features two independent circuits in a 16-TSSOP package. Key electrical parameters include a maximum static power supply current of 8 uA, output currents of 5.2 mA (low) and -5.2 mA (high), and propagation delays ranging from 43 ns to 250 ns depending on conditions. It supports operation temperatures from -55°C to +125°C.

Multivibrators Feature Summary

• Dual retriggerable precision monostable multivibrator design
• Schmitt trigger inputs for noise immunity
• Wide operating temperature range capability

Multivibrators Applications

• Timing pulse generation
• Frequency division
• Pulse width modulation

Multivibrators Procurement Notes

Verify the specific suffix 'PWT' against official Texas Instruments documentation to confirm the exact tape and reel packaging configuration. Ensure the component matches the standard CD74HC4538 specifications regarding pinout and electrical characteristics before integration into production designs.

Multivibrators Selection Notes

Select this component when a dual-channel retriggerable monostable circuit is required with Schmitt trigger inputs. It is suitable for applications needing precise timing control over wide temperature ranges. Compare against non-retriggerable alternatives like the CD74HC123 if reset behavior differs from project requirements.

Multivibrators Part Context

This part is part of the CD74HC4538 family, which includes variants such as CD74HC4538PWR and CD74HC4538MG4. These devices are high-speed CMOS logic components designed to replace older low-power Schottky TTL circuits while maintaining CMOS low power consumption and high noise immunity characteristics.

Multivibrators Replacement Considerations

CD74HC4538PWR and CD74HC4538MG4 are functionally equivalent parts within the same family. Verify that the package type (TSSOP vs SOIC) and specific ordering suffixes align with board layout constraints.