CD74HC4538PWG4

Multivibrators Overview

The CD74HC4538PWG4 is a high-speed CMOS dual retriggerable precision monostable multivibrator manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and features a maximum quiescent current of 8 uA. The device provides two independent circuits in a 16-pin TSSOP package, with propagation delays specified at 250 ns, 50 ns, and 43 ns under varying conditions. It supports low-level output currents of 5.2 mA and high-level output currents of -5.2 mA, functioning reliably across an operating temperature range from -55°C to +125°C.

Multivibrators Feature Summary

• Dual retriggerable precision monostable multivibrator architecture
• High-speed CMOS logic implementation for fast switching
• Schmitt trigger inputs for noise immunity

Multivibrators Applications

• Pulse generation and timing circuits
• Debouncing switches
• Frequency division

Multivibrators Procurement Notes

Verify the specific suffix 'G4' indicates RoHS compliance and green manufacturing status as per Texas Instruments standards. Confirm the TSSOP-16 package dimensions match the target PCB footprint requirements. Ensure the ordering part number matches the exact manufacturer designation to avoid pinout or electrical specification mismatches during integration.

Multivibrators Selection Notes

Select this component when a dual-channel monostable solution is required with high noise immunity due to Schmitt triggers. The wide supply voltage range allows flexibility in system design. Consider the thermal performance and package size constraints associated with the TSSOP-16 form factor for surface-mount assembly processes.

Multivibrators Part Context

This part belongs to the CD74HC4538 series of monostable multivibrators. It is the lead-free, RoHS-compliant version (indicated by G4) of the standard CD74HC4538PW. It shares functional compatibility with other HC-series monostable devices but offers specific packaging and environmental compliance attributes defined by the manufacturer.

Multivibrators Replacement Considerations

CD74HC4538PW

Multivibrators FAQ

What is the function of the retriggerable feature?

The device can be triggered repeatedly while its output is generating a pulse, extending the output pulse width.

How are the inputs configured?

Each multivibrator features both negative (A) and positive (B) transition triggered inputs, which can also serve as inhibit inputs.