NLV74HC4538ADR2G

Overview

The NLV74HC4538ADR2G is a dual precision monostable multivibrator manufactured by onsemi, packaged in SOIC-16. It operates within a supply voltage range of 2.0 to 6.0 V and supports an ambient temperature range from -55 °C to +125 °C. The device features retriggerable and resettable functionality with conditioned trigger inputs allowing unlimited rise and fall times. Propagation delays range from 30 ns to 265 ns depending on voltage and temperature. Maximum quiescent supply current is 130 µA at 6.0 V. Outputs drive up to 10 LSTTL loads.

Feature Summary

• Dual precision monostable multivibrator with retriggerable and resettable capabilities
• Conditioned trigger inputs allow unlimited rise and fall time restrictions
• Automotive qualification with AEC-Q100 standards and PPAP capability
• Outputs directly interface to CMOS, NMOS, and TTL logic families

Applications

• Pulse width generation for timing circuits
• Debouncing switches or contacts
• Frequency division applications
• Timing delay circuits

Procurement Notes

Verify the specific ordering suffix 'NLV' indicates automotive qualification requirements including unique site and control change protocols. Confirm package type matches SOIC-16 specifications. Check datasheet revision history as this part number may be discontinued; verify availability through official onsemi channels before finalizing procurement plans.

Selection Notes

Select this component when precise pulse width stability over wide temperature and supply ranges is required. The NLV prefix ensures compliance with automotive quality standards. Ensure external timing components are selected carefully, avoiding electrolytic capacitors due to leakage currents that affect pulse accuracy. Verify input compatibility with driving logic levels.

Part Context

This device belongs to the MC74HC4538A family of dual precision monostable multivibrators. It shares pinout compatibility with the MC14538B. The NLV prefix distinguishes it as an automotive-grade variant meeting stricter manufacturing controls compared to standard commercial versions like the MC74HC4538ADR2G.

Replacement Considerations

MC74HC4538ADR2G

FAQ

What is the recommended type of capacitor for external timing?

Polystyrene capacitors are recommended for optimum pulse width control. Electrolytic capacitors are not recommended due to high leakage currents associated with them.

How does the device handle power-down conditions with large timing capacitors?

Large Cx values can cause issues during power-down. An external damping diode (Dx) should be used to prevent damage from rapid discharge through input protection diodes if the supply turns off too quickly.