This excludes computer versions.
Blackjack was a staple of game consoles in those days, it seemed. With the curious exception of the Atari 5200 (and the Odyssey 2?), just about every console I can think of had one. Even the primitive RCA Studio 2.
All of them essentially had the gameplay nailed down.
Among the notables:
Casino on the Atari 2600 (1978, I think). A number of options, plus 5-Card Stud, and Poker Solitaire, which was every bit as good as a computer version (a "new" game) which appeared in 1990!
Ken Uston's Blackjack/Poker. One of the few 4-player CV games, this had a good version of Blackjack, with 5-Card Stud thrown in. Graphics could've used some improvement, though. It's main attraction was the fact that it was programmed with Ken Uston's advice for Blackjack.
Blackjack for the Intellivision. Still has the most popular dealer of all time.