SN74S240NE4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74S240NE4 is an octal buffer and line driver manufactured by Texas Instruments, utilizing Schottky transistor logic technology. It features two independent 4-bit drivers with inverted outputs and active-low output-enable inputs (G). The device provides three-state outputs capable of driving bus lines or buffering memory address registers. It operates within a supply voltage range of 4.75 V to 5.25 V and supports an operating temperature range of 0 °C to 70 °C. The component is housed in a 20-pin PDIP package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Features PNP inputs that reduce DC loading on bus lines.
• Incorporates built-in hysteresis at the inputs to improve noise margins.
• Provides three-state outputs that can drive bus lines directly or buffer memory address registers.

Buffers, Drivers, Receivers, Transceivers Applications

• Servers
• LED Displays
• Network Switches
• Telecom Infrastructure

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and environmental compliance. Ensure the procurement channel sources from authorized distributors to guarantee authenticity. Confirm that the component meets the required RoHS standards for your manufacturing process. Check for any updates to the datasheet revision history regarding parameter changes.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when high-speed data transmission is required due to its fast propagation delay characteristics. It is suitable for mixed 3.3-V and 5-V system environments as inputs are tolerant down to 2 V. Consider the high fan-out and improved fan-in capabilities for complex bus-oriented receiver and transmitter designs.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4S24x family of octal buffers and line drivers. It shares functional similarities with the SN74LS240 but utilizes Schottky technology for faster switching speeds. The 'NE4' suffix typically denotes a lead-free, environmentally compliant version of the standard SN74S240 in a PDIP-20 package.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74S240N

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle power-up or power-down states?

To ensure the high-impedance state during power up or power down, the G pin must be tied to VCC through a pullup resistor.

What is the function of the G input pins?

The G pins are active-low output-enable inputs. When G is low, the device passes data from the A inputs to the Y outputs; when G is high, the outputs enter a high impedance state.