74ACQ244PC

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74ACQ244PC is an octal buffer and line driver featuring 3-STATE outputs, housed in a 20-Lead Plastic Dual-In-Line (PDIP) package. It operates within a supply voltage range of 2.0V to 6.0V and supports an operating temperature from -40°C to +85°C. The device provides high drive capability with output source/sink currents of 24 mA. Propagation delays are specified at 9 ns maximum at 3.3V and 6 ns maximum at 5.0V under a 50 pF load.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Utilizes Quiet Series technology for guaranteed quiet output switching and improved dynamic threshold performance.
• Features GTO output control and undershoot corrector for superior noise immunity.
• Includes split ground bus design to enhance PC board density and signal integrity.
• Provides pin-to-pin skew AC performance guarantees.

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address drivers
• Clock drivers
• Bus oriented transmitters or receivers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering code against current manufacturer documentation to confirm availability and exact specifications. Check for RoHS compliance details and ensure the PDIP-20 package matches the target PCB footprint requirements before finalizing procurement decisions.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring octal buffering with reduced simultaneous switching noise. The Quiet Series technology offers faster propagation delays compared to standard AC/ACT244 devices while maintaining lower quiescent current levels suitable for dense circuit layouts.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the ACQ logic series, which integrates Fairchild's Quiet Series technology into the standard 74AC244 octal buffer architecture. It is designed to replace standard AC buffers where noise reduction and higher density are critical design constraints.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The 74AC244PC serves as a functional equivalent but lacks the specific Quiet Series noise reduction features. Verify that the replacement meets the required dynamic threshold performance and simultaneous switching noise limits if noise sensitivity is a primary concern.

Buffers, Drivers, Receivers, Transceivers FAQ

What technology ensures the quiet output switching performance?

The device utilizes Fairchild Quiet Series technology, which includes GTO output control and an undershoot corrector to guarantee quiet output switching.

How does the split ground bus benefit the circuit?

The split ground bus design contributes to superior performance by improving PC board density and reducing noise coupling between inputs and outputs.