74FCT2541TK

Buffers, Drivers, Receivers, Transceivers Overview

The CY74FCT2541T is an octal buffer and line driver manufactured by Texas Instruments, designed for memory-address driving, clock driving, and bus-oriented transmission. It features 3-state outputs with on-chip termination resistors to reduce system noise caused by reflections. The device includes Ioff circuitry to support partial-power-down mode operation, preventing damaging current backflow when powered down. It offers ESD protection exceeding JESD 22 standards and provides matched rise and fall times. The component operates within a supply voltage range of 4.75 V to 5.25 V and supports an operating temperature range from -40°C to 85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• On-chip termination resistors integrated at the outputs to minimize system noise resulting from signal reflections.
• Ioff circuitry enables partial-power-down mode functionality by disabling outputs to prevent damaging current backflow.
• Edge-rate control circuitry incorporated to significantly improve overall noise characteristics.
• Fully compatible with TTL input and output logic levels without requiring external components.

Buffers, Drivers, Receivers, Transceivers Applications

• Memory-address drivers
• Clock drivers
• Bus-oriented transmitters and receivers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific speed grade suffix (T, A, or C) against design requirements, as propagation delays vary between grades. Confirm package availability in SOIC or QSOP formats. Ensure compliance with RoHS and Green material specifications if required. Check for lead-free finish options such as NIPDAU. Validate that the ordering part number matches the desired tape-and-reel or tube packaging configuration.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when low power dissipation is critical compared to bipolar logic counterparts. Choose the T, A, or C speed grade based on maximum allowable propagation delay constraints. Utilize the built-in 25-ohm series resistors for applications requiring reduced transmission-line reflection noise. Consider the Ioff feature for systems requiring safe partial-power-down states. Ensure interface compatibility with existing TTL and CMOS devices.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the FCT (Fast CMOS) family, offering performance comparable to bipolar logic while reducing power consumption. It is functionally and pinout compatible with standard FCT and F Logic devices. The CY74FCT2541T serves as a direct replacement for the CY74FCT541T in existing designs to achieve improved noise reduction through integrated termination resistors.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The CY74FCT2541T can replace the CY74FCT541T to reduce noise in existing designs due to its functional and pinout compatibility. Verify that the target application benefits from the integrated 25-ohm series resistors and on-chip termination features present in this variant.

Buffers, Drivers, Receivers, Transceivers FAQ

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

The device includes Ioff circuitry that disables the outputs when the device is powered down, preventing damaging current backflow through the component.

What mechanism reduces system noise caused by reflections?

On-chip termination resistors are integrated at the outputs to reduce system noise caused by reflections.

Is external componentry needed for TTL interfacing?

No, the input and output voltage levels allow direct interface with TTL and CMOS devices without external components.