BU4538B

Multivibrators Overview

The BU4538B is a dual precision monostable multivibrator manufactured by ROHM Semiconductor. It operates within a power supply voltage range of 3 V to 16 V and features propagation delays of 300 ns and 150 ns at 5 V and 10 V respectively. The device provides low-level output currents up to 3 mA and high-level output currents of -1.2 mA. It is housed in a DIP-16 package, supports through-hole mounting, and functions across an operating temperature range of -40 °C to +85 °C.

Multivibrators Feature Summary

• Features linear CMOS technology for precise control of output pulse width based on external timing constants Rx and Cx.
• Capable of being reset and retriggered from either edge of an input pulse.
• Provides high fan-out capability with direct drive support for multiple TTL inputs.

Multivibrators Applications

• Timing generation circuits
• Pulse width modulation applications
• Frequency division circuits

Multivibrators Procurement Notes

Verify component authenticity against the official ROHM Semiconductor datasheet specifications. Confirm that the physical package matches the DIP-16 form factor and check for any discontinuance notifications or end-of-life status updates prior to procurement planning.

Multivibrators Selection Notes

Select this component when a dual monostable multivibrator with wide supply voltage tolerance is required. Ensure the design accommodates the specified propagation delays and output current limits. Verify that the external timing components Rx and Cx fall within the recommended operating conditions for the desired pulse width accuracy.

Multivibrators Part Context

This part belongs to the BU4538B series of standard ICs designed for general-purpose logic applications. It utilizes silicon-based construction and is intended for use in ordinary electronic equipment such as audio visual devices, office automation equipment, and communications devices without requiring extreme reliability standards.

Multivibrators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

Multivibrators FAQ

How is the output pulse width determined?

The output pulse width is determined by the external timing constants Rx and Cx using the equation tWOUT = Rx · Cx throughout the entire power supply voltage range.

Can the device be retriggered?

Yes, the BU4538B can be reset and retriggered from either edge of an input pulse.