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TTL = transistor transistor logic This is the technology in the common 74' series integrated circuits that became popular in the late 1960's and 1970's. You ca
by PhilWright 10y ago
TTL = transistor transistor logic
This is the technology in the common 74' series integrated circuits that became popular in the late 1960's and 1970's. You can get basic IC's that perform AND, NOT, XOR operations but also more complex IC's that perform as multiplexors, buffers, registers and so forth. You can find these in computers like the PDP or VAX series machines.
They are not used as much today and so less of them are still manufactured.
- dom0 10y agoAlthough when we say TTL/74 today, usually HCMOS is meant. Real TTL 7400 series parts are, I think, all EOL and have been for many years.
- dboreham 10y agoLooks like 'F' is still available: http://www.nxp.com/documents/data_sheet/74F74.pdf http://www.nxp.com/documents/data_sheet/74F74.pdf
- Gracana 10y agoTI still makes a lot of them, but you have to mix and match series if you want broad coverage of the device family. This document is a very helpful overview of their range and how they interoperate: http://www.ti.com/lit/sg/sdyu001aa/sdyu001aa.pdf http://www.ti.com/lit/sg/sdyu001aa/sdyu001aa.pdf (fwiw it sounds like you know what you're talking about; I just wanted to share this info for anyone else who might be interested)
- bogomipz 10y agoAh ok, you were referring to the catalog of actually being able to order these types of first generation ICs I see. Yeah I would imagine it would be nice market - basically the hobbyist if that. Cheers.