SN74LS245DWRG4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS245DWRG4 is an octal bus transceiver with 3-state outputs manufactured by Texas Instruments. It operates on a single 4.75 V to 5.25 V supply voltage and utilizes Schottky transistor logic. The device features eight bidirectional channels controlled by a direction pin (DIR) and an active-low output enable pin (OE). It is housed in a 20-pin SOIC package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides three-state outputs capable of driving bus lines directly while allowing isolation via the OE input.
• Incorporates PNP inputs designed to reduce DC loading on connected bus lines.
• Features built-in hysteresis at bus inputs to improve noise margins during signal transmission.

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 component matches the SN74LS245DWRG4 designation, specifically confirming the G4 suffix indicates RoHS compliance and lead-free status. Ensure the package type corresponds to the standard 20-pin SOIC format. Confirm the operating temperature range aligns with commercial requirements of 0°C to 70°C before finalizing procurement specifications.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring asynchronous two-way communication between data buses where high drive strength is necessary. It is suitable for replacing legacy LS logic in designs needing improved noise immunity through input hysteresis. Consider the specific current drive capabilities and propagation delays when interfacing with ribbon cables or backplane buses.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4LS245 family of octal bus transceivers. It shares functional compatibility with other variants like the SN74LS245DW but includes specific environmental and packaging attributes defined by the DWRG4 suffix. The device is part of Texas Instruments' standard logic portfolio focused on bus interface solutions.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LS245DWR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the DIR pin control data flow?

The DIR pin determines the direction of data transmission. 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 pin?

The OE (Output Enable) pin is active-low. When driven high, it places all outputs in a high-impedance state, effectively isolating the A and B buses from each other.