SN74HCT540DWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HCT540DWR is an octal buffer and line driver with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and features low power consumption with a maximum ICC of 80 µA. The device provides ±6 mA output drive at 5 V and typical propagation delay (tpd) of 12 ns. Inputs are TTL-voltage compatible, and the high-current 3-state outputs can interface directly with system buses or drive up to 15 LSTTL loads. It utilizes a data flow-through pinout arrangement in a 20-pin SOIC package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal buffers and line drivers designed for inverted data output
• Dual output-enable inputs function as a 2-input NOR gate for 3-state control
• Data flow-through pinout places all inputs on the opposite side from outputs
• TTL-voltage compatible inputs ensure compatibility with standard logic families

Buffers, Drivers, Receivers, Transceivers Applications

• High-performance register files
• Clock distribution circuits
• Buffering memory-address registers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'DWR' corresponds to the tape-and-reel packaging format rather than tube packaging. Confirm that the RoHS compliance status aligns with current environmental regulations for your region. Ensure the operating temperature range of -40°C to 85°C meets your application requirements. Check for any recent product change notices regarding material composition or manufacturing location changes.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal buffer with inverted outputs and 3-state capability is required. The HCT series ensures compatibility with TTL logic levels while maintaining CMOS low-power characteristics. Consider the 20-pin SOIC package dimensions for PCB layout constraints. Verify that the input transition times do not exceed 500 ns to maintain proper device operation.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74HCT540 family of octal buffers and line drivers. It shares functional similarities with the SN54HCT540 but differs in operating temperature range and availability. The device is distinct from non-inverting counterparts like the SN74HCT240 due to its inverted output configuration. It is commonly used in digital systems requiring bus isolation and signal buffering.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74HCT540DW is available in tube packaging instead of tape-and-reel. SN74HCT540N offers a PDIP-20 through-hole package option. CD74HCT540M96 is a similar octal buffer with 3-state outputs from Texas Instruments.