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AH_WA70
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Join Date: Mar 2008
Posts: 81

TTL versus LS

06/29/2010 4:27 AM

can I replace 7474 with 74ls74 ?
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JohnDG
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#1

Re: TTL versus LS

06/29/2010 5:02 AM

Yes, usually without any problem.

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indel
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Engineering Fields - Electrical Engineering - New Member

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#2
In reply to #1

Re: TTL versus LS

06/29/2010 9:23 AM

Agree, it is not very often that one have to count the fan-in as load for 74LS74. Its IOL is only 8mA as compared with 16mA for 7474.

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