74AC245TTR

Buffers, Drivers, Receivers, Transceivers Overview

The STMicroelectronics 74AC245TTR is an octal bus transceiver with three-state outputs, fabricated using advanced high-speed CMOS technology. It operates within a supply voltage range of 2V to 6V and features symmetrical output impedance with a minimum drive capability of 24mA. The device provides balanced propagation delays and supports transmission line driving for impedances as low as 50Ω. It includes protection circuits against static discharge, offering 2kV ESD immunity.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal bidirectional data transfer controlled by direction and enable inputs
• Three-state outputs for effective bus isolation when disabled
• High noise immunity with defined input voltage thresholds
• Symmetrical output impedance ensuring balanced signal transmission

Buffers, Drivers, Receivers, Transceivers Applications

• Two-way asynchronous communication between data buses
• Driving capacitive loads and transmission lines
• Bus-oriented architectures requiring isolated data paths

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the component status before procurement, as the datasheet identifies this part as obsolete. Confirm availability through authorized distributors or secondary markets if sourcing is required. Ensure that the TSSOP-20 package specifications match your board design requirements. Check for updated replacement components from the manufacturer if long-term supply stability is necessary.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring high-speed CMOS logic with wide operating voltage flexibility. It is suitable for systems needing robust noise immunity and strong drive capabilities. Consider the obsolescence status when designing new products. Evaluate alternative modern equivalents if future production runs are anticipated.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the 74AC series of high-speed CMOS logic functions. It is functionally compatible with the 74LS244 series but offers improved speed and lower power dissipation. The TTR suffix indicates it is supplied in a tape and reel format within a TSSOP-20 package.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check for direct pin-compatible replacements from STMicroelectronics or other manufacturers. Verify that any substitute maintains the same voltage range and drive current specifications.