74AC646SPC

Buffers, Drivers, Receivers, Transceivers Overview

The Fairchild Semiconductor 74AC646SPC is a single-element, non-inverting bus transceiver belonging to the 74AC logic series. It provides eight-bit data transfer capability with tri-state outputs and operates within a supply voltage range of 2V to 6V. The device supports bidirectional communication controlled by direction pins and features low input capacitance for high-speed performance. It is housed in a 24-pin plastic dual in-line package (PDIP) designed for through-hole mounting on printed circuit boards.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Non-inverting bus transceiver architecture supporting bidirectional data flow
• Tri-state output configuration enabling efficient bus line management
• Direction control functionality for managing signal transmission paths

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional data bus interfaces in digital systems
• Memory module data routing applications
• General-purpose I/O expansion circuits

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify component authenticity as this part may be obsolete or discontinued. Confirm that the 24-PDIP package matches your board layout requirements. Ensure compatibility with existing 74AC family logic levels. Check for moisture sensitivity handling instructions if stored long-term. Validate that the manufacturer designation aligns with current supply chain records.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a non-inverting, single-function bus transceiver is required for 8-bit data paths. The 74AC series offers faster switching speeds compared to standard 74LS equivalents while maintaining compatible pinouts. Consider the 24-PDIP package constraints for manual assembly or legacy socket usage. Verify that the 2V to 6V operating range suits the system power supply.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the 74AC (Advanced CMOS) logic family, known for high-speed operation and wide voltage tolerance. The 74AC646 specifically addresses bidirectional data transfer needs without inversion. Similar variants exist in the 74ACT series for 5V-only applications or different packaging options like SOIC. The SP suffix typically denotes the specific plastic DIP package variant.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check for direct cross-reference part numbers from other manufacturers offering identical 74AC646 specifications. Verify pinout compatibility before substituting with similar bus transceivers. Ensure replacement components maintain the same tri-state and direction control functionalities.