SN74AS245NSR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AS245NSR is an octal bus transceiver from the Texas Instruments AS logic family, housed in a 20-pin SOIC package. It features non-inverting data flow with three-state outputs controlled by direction and output enable signals. The device operates on a single 4.5 V to 5.5 V supply, supporting CMOS input levels and TTL-compatible output drive characteristics. Key electrical parameters include a propagation delay of 6 ns, low-level output current of 24 mA, and high-level output current of -12 mA. It functions within a temperature range of 0°C to +75°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides bidirectional octal data transfer between two buses using a single direction control pin.
• Features three-state outputs that isolate the bus when disabled to prevent signal contention.
• Delivers high-speed performance with a 6 ns propagation delay typical for the AS logic series.

Buffers, Drivers, Receivers, Transceivers Applications

• High-speed memory buffer applications requiring fast data throughput.
• Clock drivers where precise timing and low skew are critical.
• Control signal routing in complex digital systems.

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'NSR' corresponds to the standard tape-and-reel packaging configuration. Confirm the AS logic family designation matches system speed requirements. Ensure the SOIC-20 package dimensions align with PCB footprint constraints. Check RoHS compliance status for environmental regulations.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when high-speed switching is required compared to standard or ALS families. The AS series offers faster propagation delays but may consume more power. Verify that the 24 mA drive capability meets load requirements without exceeding thermal limits. Consider the 5V-only operation if multiple voltage domains are not present.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74AS245 family of octal bus transceivers. It serves as a high-performance alternative to slower logic families like LS or ALS. The device is designed for applications demanding rapid data transfer rates across wide buses.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ALS245NSR offers similar functionality with slower speeds. SN74F245NSR provides comparable performance with different drive strengths. SN74ACT245NSR is a CMOS-based alternative with lower power consumption.