CD54HC4538F3A

Multivibrators Overview

The CD54HC4538F3A is a dual retriggerable precision monostable multivibrator manufactured by Texas Instruments. It operates within a supply voltage range of 2V to 6V and supports an operating temperature range from -55°C to 125°C. The device features Schmitt trigger inputs on A and B terminals, separate resets, and buffered Q and Q outputs. Timing is controlled by external resistor (RX) and capacitor (CX), allowing for wide output pulse width adjustment. Propagation delays are independent of RX and CX values.

Multivibrators Feature Summary

• Retriggerable and resettable capability with propagation delays independent of timing components
• Schmitt trigger inputs on A and B terminals for noise immunity
• Wide operating temperature range suitable for harsh environments
• Direct LSTTL input logic compatibility in HCT versions

Multivibrators Applications

• Fixed voltage timing applications
• Pulse generation circuits
• Timing delay circuits
• Waveform shaping

Multivibrators Procurement Notes

Verify the complete part number including suffixes when ordering. Confirm package type matches design requirements. Check RoHS compliance status. Ensure proper handling procedures due to electrostatic discharge sensitivity. Verify military grade qualification if required for defense applications.

Multivibrators Selection Notes

Select HC version for 2V to 6V operation or HCT version for direct LSTTL compatibility at 4.5V to 5.5V. Consider external component requirements for timing accuracy. Evaluate thermal management needs for high-temperature operation. Verify package availability for manufacturing constraints.

Multivibrators Part Context

This component belongs to the CD54HC4538 family of high-speed CMOS logic devices. It is designed for precision monostable multivibrator applications requiring reliable timing performance across extended temperature ranges. The device offers dual channels with independent control capabilities.

Multivibrators Replacement Considerations

CD54HC4538F3A serves as a direct replacement for CD54HC4538F in ceramic DIP packages. Both parts share identical electrical specifications and pin configurations. Verify package dimensions and mounting requirements before substitution.