[sdiy] SCSI hard drive?

[mark verbos]

Ok this is a longshot....

I moved a SCSI harddrive inside my computer with the power on and I must 
have touched some metal with the PCB side. Smoke came off the board and 
there is a fried chip on it. I think if I replace that chip, the drive 
will still work (I hope I should say). It is SMT but not super small pitch.

The problem is I can't really read the chip label. The burn obscures the 
label. It is a Texas Instuments 24 pin. what I can read is "74AXYVT" and 
"TPIC15..." then the burn starts

Any guesses? Are these kind of parts available? The drive is a Seagate 
Barracuda, BTW

Mark