SN74F543: SN74F543 alternative

Chris Schneider

Prodigy 130 points

Part Number: SN74F543

I'm looking to see if TI has an alternative to the SN74F543 that is available in through-hole packaging (PDIP).

over 1 year ago

0 Chris Schneider over 1 year ago

Prodigy 130 points

I know there usted to be a through-hole alternative: SN74F543NT

However, it is no longer available.

0 Albert Xu1 over 1 year ago in reply to Chris Schneider

TI__Mastermind 37565 points

Hi Chris,

This device is fairly old so there may not be a suitable replacement. What is your use-case here? I see that this has separate LE and OE pins. Is there a need for these LE pins or does a generic 8-ch bus transceiver work such as https://www.ti.com/product/SN74HCS245 (this does not have a PDIP package but I want to figure out your need first so we can look into devices with a PDIP)

0 Chris Schneider over 1 year ago in reply to Albert Xu1

Prodigy 130 points

The generic will not work. I need the separate LE and OE pins because I am enabling or disabling a 16bit bus with the 74F543 with a slide switch, depending on which system the card is going to be installed in. I may just have to have this IC as SMD.

0 Albert Xu1 over 1 year ago in reply to Chris Schneider

TI__Mastermind 37565 points

Hi Chris,

Unfortunately there is no replacement with LE pins. The best that I can recommend is https://www.ti.com/product/SN74HCT623 with two OE pins for A/B sides.

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SN74F543: SN74F543 alternative