SN74LS640DWR2

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS640DWR2 is an octal bus transceiver belonging to the LS TTL logic family, manufactured by Texas Instruments. It features eight bidirectional data channels with a common output enable and direction control. The device utilizes a 20-pin SOIC surface-mount package. It operates within a supply voltage range of 4.75V to 5.25V and supports an operating temperature range of 0°C to 70°C. The component provides high-speed performance with propagation delays between 10ns and 50ns, offering a maximum output current of 24mA in the low state and -15mA in the high state.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides bidirectional data transmission across eight independent channels
• Integrates common output enable and direction control for simplified interface management
• Delivers high-speed signal processing capabilities suitable for timing-critical applications

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address drivers
• Clock drivers
• Bus-oriented transmissions

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the manufacturer designation carefully, as the part number prefix indicates Texas Instruments production despite the user query specifying onsemi. Confirm the suffix 'R2' corresponds to the tape-and-reel packaging format. Ensure compatibility with existing LS TTL logic levels and power supply requirements before procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal bidirectional bus transceiver with TTL inputs and outputs is required. It is suitable for systems needing high drive strength and moderate speed. Consider the 20-SOIC package constraints and ensure the design accommodates the specified voltage and temperature ranges.

Buffers, Drivers, Receivers, Transceivers Part Context

This component is part of the SN54LS64x and SN74LS64x series of octal bus transceivers. It shares functional similarities with other LS series devices but is distinct from CMOS alternatives like the HC or ACT families. The device serves as a standard interface solution for connecting microprocessors to memory or peripheral buses.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LS640DW

Buffers, Drivers, Receivers, Transceivers FAQ

What is the logic family of the SN74LS640DWR2?

It belongs to the LS (Low-power Schottky) TTL logic family.

Does the SN74LS640DWR2 have inverted outputs?

No, the SN74LS640 variant typically features non-inverted outputs, unlike the SN74LS641 which has inverted outputs.