SN74LS245DWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS245DWR is an octal bus transceiver utilizing Schottky transistor logic, designed for asynchronous bidirectional communication between data buses. It operates within a supply voltage range of 4.75 V to 5.25 V and supports a low-level output current of 24 mA with a high-level output current of -15 mA. The device features three-state outputs and is housed in a 20-pin SOIC package. It functions across an operating temperature range of 0 °C to 70 °C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Three-state outputs capable of driving bus lines directly
• PNP inputs reduce DC loading on bus lines
• Hysteresis at bus inputs improves noise margins

Buffers, Drivers, Receivers, Transceivers Applications

• Building automation
• Electronic point of sale
• Factory automation and control
• Test and measurement

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'DWR' corresponds to the large tape-and-reel packaging format. Confirm that the RoHS compliance status and lead finish (NIPDAU) align with project requirements. Ensure the active production status remains valid before finalizing procurement plans.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring eight-bit asynchronous data transfer between buses. It is suitable for applications needing high drive strength to overcome signal losses in ribbon cables or backplanes. Verify that the LS logic family speed and power consumption meet the system's performance constraints.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4LS245 family of octal bus transceivers with three-state outputs. It shares common pinouts and direction select pins with other variants in the series. The device provides isolation capabilities through its output-enable input, allowing effective separation of connected buses when disabled.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LS245DW

Buffers, Drivers, Receivers, Transceivers FAQ

How does the DIR input control data flow?

The DIR input determines the transmission direction. A low level directs data from the B bus to the A bus, while a high level directs data from the A bus to the B bus.

What is the function of the OE input?

The OE input is an active-low output enable. When set to a high logic level, it disables all outputs, placing them in a high-impedance state to effectively isolate the buses.