NEO-BUF

Dual 74HC245 octal transceivers in one chip. This chip is extensively used in CD systems to multiplex subsystem and accesses to DRAMs.

Also found on late MVS boards.

Pinout


OpenOffice Draw file:

Replacement
On some MVS boards, some NEO-BUF chips are just used as buffers for the 68k data bus. There are reports of succesful repairs done by replacing them with a small bypass board which simply connects the A side with the B side (see picture).

Note that this should NOT be done to replace damaged NEO-BUF chips which are used for other purposes. This can only work for:
 * GA1 on the SLOT1B board of the
 * GA11 on the