SN74HC240DGSR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC240DGSR is an octal buffer and line driver featuring 3-state outputs, manufactured by Texas Instruments. It operates within a supply voltage range of 2V to 6V and supports a maximum operating temperature of 125°C. The device utilizes a VSSOP-20 package with 20 pins. Key electrical characteristics include a typical propagation delay of 9ns at 5V, high-current outputs capable of driving up to 15 LSTTL loads, and low power consumption with a maximum ICC of 80µA. Output drive capability is specified as ±6mA at 5V, with a maximum input current of 1µA.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal buffers and line drivers designed for 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters.
• Organized as two 4-bit buffers/drivers with separate output-enable (OE) inputs for independent control.
• Outputs enter a high-impedance state when OE is high, allowing connection to bus lines or memory address registers.

Buffers, Drivers, Receivers, Transceivers Applications

• 3-state memory address drivers
• Clock drivers
• Bus-oriented receivers and transmitters

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific orderable part number SN74HC240DGSR against the manufacturer's latest Package Option Addendum to confirm active production status and lead-free material specifications. Ensure the VSSOP (DGS) package variant matches the design requirements. Confirm that the 125°C operating temperature rating aligns with the thermal constraints of the target application environment.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring octal buffering with 3-state control in a compact surface-mount form factor. The VSSOP package offers a smaller footprint compared to standard SOIC options. Consider the 2V to 6V operating voltage range and the 125°C maximum junction temperature when evaluating compatibility with system power supplies and thermal management strategies.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SNx4HC240 family of octal buffers and line drivers with 3-state outputs. The family includes various package options such as SOIC, SSOP, PDIP, TSSOP, and LCCC. The DGSR suffix specifically denotes the VSSOP package type with tape-and-reel packaging, distinguishing it from tube-packaged variants like the SN74HC240N or other surface-mount packages.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes within the same HC logic family include SN74HC240DWR (SOIC), SN74HC240PWR (TSSOP), and SN74HC240NSR (SOP). Verify pinout compatibility and package dimensions before substitution. Other series such as AHC or HCT offer different electrical characteristics and should be evaluated based on specific performance needs.