TI
3
DIP
S
153
SOP
SIGNETICS
120
DIP24
TI
48
DIP
NS
50
DIP
S
986
SOP14 3.9
NS/National Semiconductor Corp
50
DIP
TI/Texas Instruments Incorpora
48
DIP
SIGNETICS/SIGNETICS/SIGNETICS/
120
DIP24
S
153
SOP
TI/德州仪器
6000
SOP24
74ALS646D
726
726
74ALS646D
7035
7035