TC74HC4538AF-ELF

Overview

The TC74HC4538AF-ELF is a dual retriggerable precision monostable multivibrator from Toshiba's HC logic series. It operates within a supply voltage range of 2.0 to 6.0 V and features a propagation delay of 25 ns with a drive current capability of 4 mA. The component is housed in a 16-pin SOP package designed for surface mount technology. It supports an operating temperature range from -40 °C to +85 °C and includes complementary outputs.

Feature Summary

• Dual independent monostable multivibrator circuits integrated into a single chip
• Retriggerable functionality allowing pulse extension during active output states
• Complementary output configuration providing both true and inverted signals

Applications

• Timing pulse generation and shaping
• Frequency division circuits
• Pulse width modulation applications

Procurement Notes

Verify the specific suffix EL-F against the manufacturer datasheet to confirm packaging details such as cut tape or reel specifications. Ensure the order quantity aligns with the factory packaging quantity of 2000 units if ordering bulk, or verify minimum order requirements for cut tape availability through authorized distributors.

Selection Notes

Select this component when a dual-channel timing solution is required within standard CMOS voltage limits. The HC series offers speed comparable to low power Schottky TTL while maintaining low power dissipation. Consider the SOP-16 package constraints and the 25 ns delay specification relative to system timing requirements.

Part Context

This device belongs to the TC74HC4538 family of monostable multivibrators manufactured by Toshiba Semiconductor and Storage. It is part of the broader HC/UH logic series, designed for general-purpose digital applications requiring precise timing control with high noise immunity and wide supply voltage flexibility.

Replacement Considerations

The MM74HC4538 is documented as a pin-compatible alternative. Verify electrical characteristics and package dimensions before substitution.