74FCT2240CTSOCTE4

Buffers, Drivers, Receivers, Transceivers Overview

The CY74FCT2240CTSOCTE4 is an octal buffer and line driver with 3-state outputs, manufactured by Texas Instruments. It operates within a supply voltage range of 4.75 V to 5.25 V and supports a temperature range of -40°C to +85°C. The device features TTL-compatible input and output levels, providing 15-mA source current and 12-mA sink current. Propagation delay is specified at a maximum of 4.1 ns. Each output includes integrated 25-Ω series resistors to reduce transmission-line reflection noise. The component utilizes edge-rate control circuitry for improved noise characteristics and supports partial-power-down mode via Ioff.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Integrates on-chip 25-ohm series resistors at each output to minimize noise from reflections or standing waves in high-performance applications.
• Features edge-rate control circuitry designed to significantly improve noise characteristics compared to standard logic counterparts.
• Includes Ioff circuitry that disables outputs to prevent damaging current backflow when the device is powered down.
• Provides fully compatible TTL input and output logic levels, allowing direct interface with TTL, NMOS, and CMOS devices without external components.

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address drivers
• System clock drivers
• Bus-oriented transmitter/receiver circuits

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest documentation to confirm package type, tape-and-reel specifications, and environmental compliance status. Ensure the selected variant matches the required operating temperature range and electrical characteristics for the target application design.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring high-speed buffering with reduced board space due to integrated termination resistors. Consider the 3-state output capability for bus sharing applications. Verify compatibility with existing TTL logic levels and ensure power supply constraints align with the 4.75 V to 5.25 V operating range.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the FCT logic family, offering speed and drive capabilities commensurate with bipolar logic while reducing power dissipation. It is functionally and pinout compatible with FCT and F Logic standards. The octal configuration provides eight independent buffers within a single 20-pin package, suitable for dense digital systems.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

CY74FCT2240TSOCTE4

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle partial-power-down scenarios?

The device supports partial-power-down mode operation through its Ioff circuitry, which automatically disables the outputs to prevent damaging current backflow when the chip is powered down.

What is the purpose of the internal resistors in this buffer?

The on-chip 25-ohm terminating resistors are included to minimize noise resulting from reflections or standing waves, thereby reducing overall board space and component count in high-performance applications.