DTL had essentially the same specs as TTL. It was an evolutionary step.
RTL was a strange beast, and ran off of 3.6V. There is no inherent reason that there couldn't have been multiple families that used different supplies, but I only remember the 3.6V variety. -Chuck Harris Rob Kimberley wrote:
RTL and DTL used 5.0V. I used to service Systron-Donner kit back in the early 70's, and we had a bunch of RTL and DTL stuff. Rob K
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