| 型号 | 厂商 | 描述 |
| mc74hc240ang | ON Semiconductor | IC INVERTER DUAL 4-INPUT 20DIP |
| mc74hc244adt | ON Semiconductor | IC BUFF/DVR TRI-ST DUAL 20TSSOP |
| mc74hc244adtg | ON Semiconductor | IC BUFF/DVR TRI-ST DUAL 20TSSOP |
| mc74hc244adtr2g | ON Semiconductor | IC BUFF/DVR TRI-ST DUAL 20TSSOP |
| mc74hc244adtr2g | ON Semiconductor | IC BUFF/DVR TRI-ST DUAL 20TSSOP |
| mc74hc244adtr2g | ON Semiconductor | IC BUFF/DVR TRI-ST DUAL 20TSSOP |
| mc74hc244adwg | ON Semiconductor | IC BUFF/DVR TRI-ST DUAL 20SOIC |
| mc74hc244adwr2 | ON Semiconductor | IC BUFF/DVR TRI-ST DUAL 20SOIC |
| mc74hc244adwr2g | ON Semiconductor | IC BUFF/DVR TRI-ST DUAL 20SOIC |
| mc74hc244adwr2g | ON Semiconductor | IC BUFF/DVR TRI-ST DUAL 20SOIC |
| mc74hc244adwr2g | ON Semiconductor | IC BUFF/DVR TRI-ST DUAL 20SOIC |
| mc74hc244af | ON Semiconductor | IC BUFF/DVR TRI-ST DUAL 20SOEIAJ |
| mc74hc244afel | ON Semiconductor | IC BUFF/DVR TRI-ST DUAL 20SOEIAJ |
| mc74hc244afelg | ON Semiconductor | IC BUFF/DVR TRI-ST DUAL 20SOEIAJ |
| mc74hc244afg | ON Semiconductor | IC BUFF/DVR TRI-ST DUAL 20SOEIAJ |
| mc74hc244ang | ON Semiconductor | IC BUFF/DVR/RCVR 3ST DUAL 20DIP |
| mc74hc245adt | ON Semiconductor | IC BUS TRANSCVR 8BIT 20TSSOP |
| mc74hc245adtg | ON Semiconductor | IC BUS TRANSCVR 8BIT 20TSSOP |
| mc74hc245adtr2 | ON Semiconductor | IC BUS TRANSCVR 8BIT 20TSSOP |
| mc74hc245adtr2g | ON Semiconductor | IC BUS TRANSCVR 8BIT 20TSSOP |
| mc74hc245adwg | ON Semiconductor | IC BUS TRANSCVR 3-ST 8B 20SOIC |
| mc74hc245adwr2 | ON Semiconductor | IC BUS TRANSCVR 3-ST 8B 20SOIC |
| mc74hc245adwr2g | ON Semiconductor | IC BUS TRANSCVR 3-ST 8B 20SOIC |
| mc74hc245adwr2g | ON Semiconductor | IC BUS TRANSCVR 3-ST 8B 20SOIC |
| mc74hc245adwr2g | ON Semiconductor | IC BUS TRANSCVR 3-ST 8B 20SOIC |
| mc74hc245afelg | ON Semiconductor | IC BUS TRANSCVR 8BIT 20SOEIAJ |
| mc74hc245afg | ON Semiconductor | IC BUS TRANSCVR 8BIT 20SOEIAJ |
| mc74hc245ang | ON Semiconductor | IC BUS TRANSCVR 3ST 8BIT 20DIP |
| mc74hc251adg | ON Semiconductor | IC DATA SEL/MUX 3ST 8X1 16SOIC |
| mc74hc251adr2g | ON Semiconductor | IC DATA SEL/MUX 3ST 8X1 16SOIC |
| mc74hc251adtg | ON Semiconductor | IC DATA SEL/MUX 3ST 8X1 16TSSOP |
| mc74hc251adtr2g | ON Semiconductor | IC DATA SEL/MUX 3ST 8X1 16TSSOP |
| mc74hc259adg | ON Semiconductor | IC MULTIPLEXER 3ST 8INP 16-SOIC |
| mc74hc259adr2g | ON Semiconductor | IC MULTIPLEXER 3ST 8INP 16-SOIC |
| mc74hc259adtg | ON Semiconductor | IC MULTIPLEXER 3ST 8INP 16TSSOP |
| mc74hc259adtr2g | ON Semiconductor | IC MULTIPLEXER 3ST 8INP 16TSSOP |
| mc74hc273adt | ON Semiconductor | IC FLIP FLOP OCTAL D 20-TSSOP |
| mc74hc273adtg | ON Semiconductor | IC FLIP FLOP OCTAL D 20-TSSOP |
| mc74hc273adtr2 | ON Semiconductor | IC FLIP FLOP OCTAL D 20-TSSOP |
| mc74hc273adtr2g | ON Semiconductor | IC FLIP FLOP OCTAL D 20-TSSOP |
| mc74hc273adtr2g | ON Semiconductor | IC FLIP FLOP OCTAL D 20-TSSOP |
| mc74hc273adtr2g | ON Semiconductor | IC FLIP FLOP OCTAL D 20-TSSOP |
| mc74hc273adwg | ON Semiconductor | IC FLIP FLOP OCT D CLOCK 20-SOIC |
| mc74hc273adwr2 | ON Semiconductor | IC FLIP-FLOP D OCTAL CLCK 20SOIC |
| mc74hc273adwr2g | ON Semiconductor | IC FLIP FLOP OCTAL CLK D 20SOIC |
| mc74hc273adwr2g | ON Semiconductor | IC FLIP FLOP OCTAL CLK D 20SOIC |
| mc74hc273adwr2g | ON Semiconductor | IC FLIP FLOP OCTAL CLK D 20SOIC |
| mc74hc273af | ON Semiconductor | IC FLIP FLOP OCTAL D 20-SOEIAJ |
| mc74hc273afel | ON Semiconductor | IC FLIP FLOP OCTAL D 20-SOEIAJ |
| mc74hc273afelg | ON Semiconductor | IC FLIP FLOP OCTAL D 20-SOEIAJ |