Texas Instruments TMS2600

I took a look in a 1977 IC Master and they show the TMS2600 as discontinued. However they show alternate sources as an AMI S8773 and National MM4230 and MM5230. BUT, the First Edition of "The Integrated Circuits Catalog for Design Engineers" from TI has the TI datasheet and specs starting at page 14-139. Pinout: 1 - A3 13 - A9 2 - A2 14 - CS 3 - A1 15 - MC 4 - B1 16 - Vgg 5 - B2 17 - A8 6 - B3 18 - A7 7 - B4 19 - A6 8 - B5 20 - A5 9 - B6 21 - A4 10 - B7 22 - NC 11 - B8 23 - NC 12 - Vss 24 - Vdd A - input B - output MC - Mode Control CS - Chip Select Vdd - drain power supply Vgg - Ground power supply Vss - Substrate Supply voltage Vdd - -12V nominal Supply voltage Vgg - -24V nominal Input chip select logic 1 - -12V nominal Input chip select logic 0 - 0V nominal input pulse width - 650 ns minimum "A logical 0 on the chip select input will cause the outputs to become open circuits on the "single-ended" (open drain) type output buffer and will cause the outputs to go to Vdd on the double-ended (push-pull) type output buffer.