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smaller HP 82166A with 32-pin connector
09-09-2021, 04:56 AM
Post: #27
Dave Frederickson Offline
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RE: smaller HP 82166A with 32-pin connector
(09-08-2021 04:51 PM)Klaus Overhage Wrote:  While looking for a 74LS74, I came across a 7474 with no letters in between. Didn't know that these TTL-ICs are also available without letters, is probably an early version, but behaves exactly like a 74LS74.

No, a standard TTL 7474 does not behave exactly like a Low-Power Schottky device. The std TTL part outputs can sink 16mA while the LS device outputs can only sink 8mA. See the datasheet.
https://www.ti.com/lit/ds/symlink/sn54ls74a-sp.pdf

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RE: smaller HP 82166A with 32-pin connector - Dave Frederickson - 09-09-2021 04:56 AM



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