| Lucent T 7102A Protocol Controller | |
| Written by AnubisTTP on 2017-01-07 |
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Little is known about the Lucent 7102A, other than that it is an X.25/X.75 protocol controller that was in use in telephone switching equipment in the early 1990s. The most distinctive feature of this IC is it's unusual pin configuration; the underside of the chip contains four rows of pins arranged into four 18 pin DIP arrays, eliminating the need for a custom socket.
Lucent 7102A protocol controller at rest
The 7102A has a most unusual pin layout, which allows it to make use of 18 pin DIP sockets
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