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| General Electronics Chat This forum is for general chat about electronics, eg: Dont know what a part does? Dont know how to read a circuit? Want to get an opinion? |
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Thread Tools | Display Modes |
2nd June 2008, 09:01 PM
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Quad version of the 74LCX245
Hi All,
I am about to embark on an SD Card project which will involve mixing 3.3 and 5v signals. A 74LCX245 has been recommended which looks perfect (Logic Converter Mini Board) except I would rather have a quad version. Not being an expert on datasheets I am having trouble matching the features of this chip with a possible 4 port "cousin". Can anyone help? Best Wishes Mark |
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2nd June 2008, 10:04 PM
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Generally, standard logic parts are not built in multiple versions since the large number of I/Os would require a big and expensive package. Standard logic is seldom found in packages larger than about 28 pins.
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2nd June 2008, 10:46 PM
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The 74LCX16245 is the 16 bit version. 48 pin device.
http://www.fairchildsemi.com/ds/74/74LCX16245.pdf |
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2nd June 2008, 10:57 PM
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The 245 only converts one direction at a time.
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3rd June 2008, 11:33 AM
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Bill,
Quote:
Mark |
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