Chip Compatibility

PWM/supervisor chip was pin compatible

TL494 = xx494 = KA7500B
TL431 = xx431
UC384x = TL384x = AS384x* = FA1384x*
*The AS384x (Astec) and FA1384x (Fuji Electric) are pin compatible with all other 384x chips but are spec'd a little differently, so caution is advised.
Chip Goal CG8010DX = Weltrend WT7520
DAP015D = L6599D
Richtek RT8206 = Intersil ISL6236

SOIC8 interchangeability chips

32 Mbits (these chips are equivalent and interchangeable)

A25L032M-F AMIC 
AMIC A25L032M-UF 
MX25L3205DM2 Macronix 
EN25F32-100H EON 
W25X32VS WINBOND 
WINBOND W25Q32VS 
SST25VF032B SST

16 Mbits (these chips are equivalent and interchangeable)

A25L016M-F AMIC 
AMIC A25L016M-UF 
MX25L1605DM2 Macronix 
EN25F16-75H EON 
EON EN25F16-100H 
-75H EN25D16 EON 
EON EN25D16-100H 
W25X16VS WINBOND 
WINBOND W25Q16VS 
SST25VF016B SST

8 Mbits (these chips are equivalent and interchangeable)
A25L080M-F AMIC 
AMIC A25L080M-UF 
MX25L8005M2 Macronix 
EN25F80-75H EON 
EON EN25F80-100H 
W25X80VS WINBOND 
F25L008A-50PA ESMT 
ESMT F25L008A-100Pa 
SST25VF080B SST

4 Mbits (these chips are equivalent and interchangeable)
A25L040M-F AMIC 
AMIC A25L040M-UF 
MX25L4005AM2 Macronix 
EN25F40-75H EON 
EON EN25F40-100H 
W25X40VS WINBOND 
F25L004A-50PA ESMT 
ESMT F25L004A-100Pa 
SST25VF040B SST