SN74LS245DW

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS245DW is an octal bus transceiver utilizing Schottky transistor logic, designed for asynchronous bidirectional communication between data buses. It features three-state outputs and operates within a supply voltage range of 4.75 V to 5.25 V. The device provides a low-level output current of 24 mA and a high-level output current of -15 mA. Typical propagation delay times are 8 ns from port to port, with maximum delays reaching 12 ns under specified load conditions.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Three-state outputs allow direct driving of bus lines while enabling effective isolation when disabled.
• PNP inputs reduce DC loading on connected bus lines.
• Built-in hysteresis at bus inputs improves 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 the specific package variant against the orderable addendum, as the DW suffix indicates SOIC packaging which may have different availability status compared to other variants like DWR or N. Confirm RoHS compliance and lead finish specifications directly with Texas Instruments documentation prior to finalizing procurement orders.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring standard LS logic compatibility with higher drive strength than basic TTL. Ensure the design accommodates the 0°C to 70°C operating temperature range. Verify that input signal levels meet the specified VIH and VIL thresholds for reliable operation within the recommended supply voltage parameters.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SNx4LS245 family of octal bus transceivers. It shares common pinouts and functional definitions with related parts such as the SN54LS245 and SN74LS245N, differing primarily in manufacturing grade, package type, and specific electrical characteristics defined by the logic series.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LS245DWR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the DIR input control data flow?

When the DIR input is Low, data transfers from the B bus to the A bus. When DIR is High, data transfers from the A bus to the B bus.

What is the function of the OE input?

The Output Enable (OE) input is active-low. When OE is Low, all channels are active. When OE is High, the outputs enter a high-impedance state, effectively isolating the buses.