NLV14538BDWG

Overview

The NLV14538BDWG is a dual precision retriggerable and resettable monostable multivibrator manufactured by onsemi. It operates within a supply voltage range of 3.0 Vdc to 18 Vdc and supports an operating temperature range from -55°C to +125°C. The device generates accurate output pulses with durations determined by external timing components RX and CX, following the formula T = RX * CX. It features latched trigger inputs and separate latched reset inputs, allowing triggering from either the positive edge (A input) or negative-going edge (B input).

Feature Summary

• Dual precision monostable multivibrator architecture with retriggerable and resettable functionality.
• Capable of triggering from positive edges via A input or negative-going edges via B input.
• Includes latched trigger inputs and separate latched reset inputs for precise control.
• NLV prefix indicates qualification for automotive applications requiring unique site and control change requirements.

Applications

• Automotive electronic systems requiring AEC-Q100 qualified logic components.
• Timing circuits where pulse width extension via retriggering is required.
• Applications necessitating precise pulse generation over wide duration ranges using external RC networks.
• Systems requiring independent reset control for individual monostable channels.

Procurement Notes

Verify that the specific order number matches the NLV14538BDWG designation to ensure the SOIC-16 Wide package and automotive-grade NLV prefix are present. Confirm compliance with PPAP requirements if mandated by the end application. Check for RoHS compliance and lead-free status as indicated in the ordering information section of the datasheet.

Selection Notes

Select this component when dual monostable operation with retrigger capability is needed within a 3V to 18V supply range. It serves as a pin-for-pin compatible alternative to MC14528B and CD4528B devices. Consider this part for designs requiring operation across the full industrial temperature range of -55°C to +125°C.

Part Context

This device belongs to the MC14538B series of dual precision monostable multivibrators. The NLV prefix specifically denotes parts manufactured under strict quality controls suitable for automotive and other demanding applications. It is distinct from non-retriggerable variants like the MC14528B and offers wider operational voltage and temperature limits compared to standard CMOS counterparts.

Replacement Considerations

Pin-for-pin compatible replacements include MC14528B and CD4528B, though these lack retriggerable functionality. For pulse widths less than 10 nanoseconds with supplies up to 6 V, the MC54/74HC4538A is recommended instead.

FAQ

How is the output pulse width determined?

The output pulse width is determined by the values of the external timing resistor (RX) and capacitor (CX), calculated using the formula T = RX * CX.

What are the trigger input options?

The device can be triggered from the positive edge of an input pulse at the A input or from the negative-going edge at the B input.

Does the device support retriggering?

Yes, the NLV14538BDWG is a retriggerable monostable multivibrator, meaning additional valid triggers during the output pulse will extend the pulse duration.