SN74LS240NG4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS240NG4 is a dual octal bus driver from the Texas Instruments 74LS series, housed in a 20-pin PDIP package. It features two independent 4-bit drivers with inverted outputs and three-state control. The device operates on a supply voltage range of 4.75V to 5.25V. Key electrical characteristics include a low-level output current of 24mA and a high-level output current of 8mA. Propagation delay is typically 19ns at 5V with a 50pF load. It functions within an ambient temperature range of 0°C to +70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides bidirectional data transmission between buses using dual four-bit configurations.
• Features three-state outputs to isolate circuits when not actively driving the bus.
• Includes inverted logic functionality for signal inversion during transfer.

Buffers, Drivers, Receivers, Transceivers Applications

• Clock buffers and timing distribution
• Bus-oriented transmissions
• Memory address drivers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's latest documentation to confirm lead-free status and RoHS compliance details. Ensure the PDIP-20 package matches your PCB footprint requirements. Confirm availability through authorized distributors as this component may be subject to lifecycle changes or obsolescence notices.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring isolated bus interfaces with drive capability exceeding standard TTL loads. The three-state feature allows multiple drivers to share a common data line without contention. Consider the 74LS series power consumption relative to newer CMOS alternatives if battery life is a critical constraint.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the widely used 74LS (Low-power Schottky) family, known for balanced speed and power dissipation. The SN74LS240 specifically addresses bus architecture needs by providing buffered, tri-stated connections. It serves as a foundational logic IC for digital system interconnects and interface management.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct pin-compatible substitutes include the SN74LS240N and SN74LS240NSR. For equivalent performance in different packages, consider the SN74LS240D or SN74LS240PW. Verify that any replacement maintains the same three-state logic and voltage specifications.