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SN74HC540NS is listed in the Buffers, Drivers, Receivers, Transceivers range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC BUFFER INVERT 6V 20SO. Review the specifications below when checking this part for your BOM.
The SN74HC540NS is an octal buffer and line driver featuring 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V, with a recommended nominal voltage of 5 V. The device provides inverted data at the outputs and utilizes a data flow-through pinout configuration where inputs are positioned on the opposite side from outputs. It includes dual output-enable inputs (OE1 and OE2) controlled by a 2-input NOR gate; if either input is high, all eight outputs enter a high-impedance state. The package is a 20-pin Small Outline (SO).
Verify the specific ordering suffix 'NS' corresponds to the 20-pin SO package when sourcing. Confirm RoHS compliance status and lead finish details against the latest TI Package Option Addendum. Ensure the component meets the required operating temperature range of -40°C to 85°C for catalog versions. Cross-reference the manufacturer part number with official datasheets to validate authenticity and revision history.
Select this component for applications requiring octal buffering with inverted outputs and 3-state capability. The HC series offers low power consumption and wide voltage operation suitable for general-purpose digital systems. Consider the specific package dimensions and thermal resistance values provided in the datasheet for PCB layout planning. Verify that the input transition rise/fall times align with the system clock speeds to ensure proper switching characteristics.
This device belongs to the SNx4HC540 family of octal buffers and line drivers. It shares performance characteristics with the popular 'HC240 series but distinguishes itself through its unique pinout arrangement. The family includes various package options such as CDIP, SOIC, PDIP, and TSSOP, catering to different manufacturing and assembly requirements while maintaining consistent electrical specifications across variants.
SN74HC540N
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