SN74LS245NSR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS245NSR is an octal bus transceiver from the SNx4LS245 series, manufactured by Texas Instruments. It utilizes Schottky transistor logic to facilitate asynchronous two-way communication between data buses. The device features eight channels with three-state outputs and operates within a supply voltage range of 4.75 V to 5.25 V. It employs PNP inputs to reduce DC loading on bus lines and incorporates hysteresis at the bus inputs to improve noise margins. The component is housed in a 20-pin Small Outline (SO) package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Three-state outputs capable of driving bus lines directly
• PNP inputs designed to minimize DC loading on bus lines
• Built-in hysteresis at bus inputs to enhance noise margins

Buffers, Drivers, Receivers, Transceivers Applications

• Building automation systems
• Electronic point of sale terminals
• Factory automation and control networks
• Test and measurement equipment

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify that the specific ordering suffix matches the required package type and reel specifications for surface-mount assembly. Confirm RoHS compliance status and moisture sensitivity level ratings prior to procurement. Ensure the selected variant aligns with the intended operating temperature range and thermal management requirements for the final application design.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring high-drive strength for ribbon cables or backplane buses. Consider its ability to isolate buses effectively via the output-enable pin. Evaluate the propagation delay characteristics against system timing constraints. Ensure input signal levels meet the specified VIH and VIL thresholds for reliable operation.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the standard '245 logic function family using Schottky transistor technology. It shares common pinouts and control functions with other variants in the series. The device allows data transmission between A and B buses based on direction control inputs. It serves as a buffer to increase drive strength and maintain signal integrity across long interconnects.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LS245N provides the same functionality in a PDIP package. SN74LS245DWR offers identical electrical performance in a SOIC package. Verify pin compatibility and package dimensions before substituting these alternatives in existing designs.