Motorola - MCM66710C IC.
8K Read only memory, row select character generator, 7 x 9 matrix.
Character Generator 128 x (9 x 7) ASCII, Shifted
Access Time: 350 nS Max.
Power Supply: 5V
Package: 24 Ceramic DIP.
Authentic Motorola - New Old Stock
Alternate: Nitron NC6571