| 序号 | 芯片名称 | 代换型号 |
|---|---|---|
| 1 | SN74LS20JD | 3102011 443-798 74LS20 74LS20CH 74LS20DC 74LS20J 74LS20N 74LS20PC 74LS20W AMX3555 C74LS20P DM74LS20N ECG74LS20 HD74LS20 HD74LS20P HE-443-798 HEPC74LS20P IC-74LS20 LS20 M74LS20P MB74LS20 MB74LS20M N74LS20F N74LS20N NTE74LS20 SK74LS20 SN74LS20 SN74LS20J SN74LS20JD SN74LS20JDS SN74LS20JS SN74LS20N SN74LS20ND SN74LS20NDS SN74LS20NS SN74LS20W T74LS20B1 T74LS20D1 TCG74LS20 X420300200 |
| 2 | SN74LS20JDS | 3102011 443-798 74LS20 74LS20CH 74LS20DC 74LS20J 74LS20N 74LS20PC 74LS20W AMX3555 C74LS20P DM74LS20N ECG74LS20 HD74LS20 HD74LS20P HE-443-798 HEPC74LS20P IC-74LS20 LS20 M74LS20P MB74LS20 MB74LS20M N74LS20F N74LS20N NTE74LS20 SK74LS20 SN74LS20 SN74LS20J SN74LS20JD SN74LS20JDS SN74LS20JS SN74LS20N SN74LS20ND SN74LS20NDS SN74LS20NS SN74LS20W T74LS20B1 T74LS20D1 TCG74LS20 X420300200 |
| 3 | SN74LS20JS | 3102011 443-798 74LS20 74LS20CH 74LS20DC 74LS20J 74LS20N 74LS20PC 74LS20W AMX3555 C74LS20P DM74LS20N ECG74LS20 HD74LS20 HD74LS20P HE-443-798 HEPC74LS20P IC-74LS20 LS20 M74LS20P MB74LS20 MB74LS20M N74LS20F N74LS20N NTE74LS20 SK74LS20 SN74LS20 SN74LS20J SN74LS20JD SN74LS20JDS SN74LS20JS SN74LS20N SN74LS20ND SN74LS20NDS SN74LS20NS SN74LS20W T74LS20B1 T74LS20D1 TCG74LS20 X420300200 |
| 4 | SN74LS20N | 3102011 443-798 74LS20 74LS20CH 74LS20DC 74LS20J 74LS20N 74LS20PC 74LS20W AMX3555 C74LS20P DM74LS20N ECG74LS20 HD74LS20 HD74LS20P HE-443-798 HEPC74LS20P IC-74LS20 LS20 M74LS20P MB74LS20 MB74LS20M N74LS20F N74LS20N NTE74LS20 SK74LS20 SN74LS20 SN74LS20J SN74LS20JD SN74LS20JDS SN74LS20JS SN74LS20N SN74LS20ND SN74LS20NDS SN74LS20NS SN74LS20W T74LS20B1 T74LS20D1 TCG74LS20 X420300200 |
| 5 | SN74LS20ND | 3102011 443-798 74LS20 74LS20CH 74LS20DC 74LS20J 74LS20N 74LS20PC 74LS20W AMX3555 C74LS20P DM74LS20N ECG74LS20 HD74LS20 HD74LS20P HE-443-798 HEPC74LS20P IC-74LS20 LS20 M74LS20P MB74LS20 MB74LS20M N74LS20F N74LS20N NTE74LS20 SK74LS20 SN74LS20 SN74LS20J SN74LS20JD SN74LS20JDS SN74LS20JS SN74LS20N SN74LS20ND SN74LS20NDS SN74LS20NS SN74LS20W T74LS20B1 T74LS20D1 TCG74LS20 X420300200 |
| 6 | SN74LS20NDS | 3102011 443-798 74LS20 74LS20CH 74LS20DC 74LS20J 74LS20N 74LS20PC 74LS20W AMX3555 C74LS20P DM74LS20N ECG74LS20 HD74LS20 HD74LS20P HE-443-798 HEPC74LS20P IC-74LS20 LS20 M74LS20P MB74LS20 MB74LS20M N74LS20F N74LS20N NTE74LS20 SK74LS20 SN74LS20 SN74LS20J SN74LS20JD SN74LS20JDS SN74LS20JS SN74LS20N SN74LS20ND SN74LS20NDS SN74LS20NS SN74LS20W T74LS20B1 T74LS20D1 TCG74LS20 X420300200 |
| 7 | SN74LS20NS | 3102011 443-798 74LS20 74LS20CH 74LS20DC 74LS20J 74LS20N 74LS20PC 74LS20W AMX3555 C74LS20P DM74LS20N ECG74LS20 HD74LS20 HD74LS20P HE-443-798 HEPC74LS20P IC-74LS20 LS20 M74LS20P MB74LS20 MB74LS20M N74LS20F N74LS20N NTE74LS20 SK74LS20 SN74LS20 SN74LS20J SN74LS20JD SN74LS20JDS SN74LS20JS SN74LS20N SN74LS20ND SN74LS20NDS SN74LS20NS SN74LS20W T74LS20B1 T74LS20D1 TCG74LS20 X420300200 |
| 8 | SN74LS20W | 3102011 443-798 74LS20 74LS20CH 74LS20DC 74LS20J 74LS20N 74LS20PC 74LS20W AMX3555 C74LS20P DM74LS20N ECG74LS20 HD74LS20 HD74LS20P HE-443-798 HEPC74LS20P IC-74LS20 LS20 M74LS20P MB74LS20 MB74LS20M N74LS20F N74LS20N NTE74LS20 SK74LS20 SN74LS20 SN74LS20J SN74LS20JD SN74LS20JDS SN74LS20JS SN74LS20N SN74LS20ND SN74LS20NDS SN74LS20NS SN74LS20W T74LS20B1 T74LS20D1 TCG74LS20 X420300200 |
| 9 | SN74LS21 | 443-961 74LS21 74LS21DC 74LS21PC ECG74LS21 GD74LS21 HD74LS21 HD74LS21P M74LS21P MB74LS21 MB74LS21M N74LS21F N74LS21N NTE74LS21 SK1920 SN74LS21 SN74LS21J SN74LS21JD SN74LS21JDS SN74LS21JS SN74LS21N SN74LS21ND SN74LS21NDS SN74LS21NS T74LS21B1 T74LS21D1 TCG74LS21 |
| 10 | SN74LS21J | 443-961 74LS21 74LS21DC 74LS21PC ECG74LS21 GD74LS21 HD74LS21 HD74LS21P M74LS21P MB74LS21 MB74LS21M N74LS21F N74LS21N NTE74LS21 SK1920 SN74LS21 SN74LS21J SN74LS21JD SN74LS21JDS SN74LS21JS SN74LS21N SN74LS21ND SN74LS21NDS SN74LS21NS T74LS21B1 T74LS21D1 TCG74LS21 |
| 11 | SN74LS21JD | 443-961 74LS21 74LS21DC 74LS21PC ECG74LS21 GD74LS21 HD74LS21 HD74LS21P M74LS21P MB74LS21 MB74LS21M N74LS21F N74LS21N NTE74LS21 SK1920 SN74LS21 SN74LS21J SN74LS21JD SN74LS21JDS SN74LS21JS SN74LS21N SN74LS21ND SN74LS21NDS SN74LS21NS T74LS21B1 T74LS21D1 TCG74LS21 |
| 12 | SN74LS21JDS | 443-961 74LS21 74LS21DC 74LS21PC ECG74LS21 GD74LS21 HD74LS21 HD74LS21P M74LS21P MB74LS21 MB74LS21M N74LS21F N74LS21N NTE74LS21 SK1920 SN74LS21 SN74LS21J SN74LS21JD SN74LS21JDS SN74LS21JS SN74LS21N SN74LS21ND SN74LS21NDS SN74LS21NS T74LS21B1 T74LS21D1 TCG74LS21 |
| 13 | SN74LS21JS | 443-961 74LS21 74LS21DC 74LS21PC ECG74LS21 GD74LS21 HD74LS21 HD74LS21P M74LS21P MB74LS21 MB74LS21M N74LS21F N74LS21N NTE74LS21 SK1920 SN74LS21 SN74LS21J SN74LS21JD SN74LS21JDS SN74LS21JS SN74LS21N SN74LS21ND SN74LS21NDS SN74LS21NS T74LS21B1 T74LS21D1 TCG74LS21 |
| 14 | SN74LS21N | 443-961 74LS21 74LS21DC 74LS21PC ECG74LS21 GD74LS21 HD74LS21 HD74LS21P M74LS21P MB74LS21 MB74LS21M N74LS21F N74LS21N NTE74LS21 SK1920 SN74LS21 SN74LS21J SN74LS21JD SN74LS21JDS SN74LS21JS SN74LS21N SN74LS21ND SN74LS21NDS SN74LS21NS T74LS21B1 T74LS21D1 TCG74LS21 |
| 15 | SN74LS21ND | 443-961 74LS21 74LS21DC 74LS21PC ECG74LS21 GD74LS21 HD74LS21 HD74LS21P M74LS21P MB74LS21 MB74LS21M N74LS21F N74LS21N NTE74LS21 SK1920 SN74LS21 SN74LS21J SN74LS21JD SN74LS21JDS SN74LS21JS SN74LS21N SN74LS21ND SN74LS21NDS SN74LS21NS T74LS21B1 T74LS21D1 TCG74LS21 |
| 16 | SN74LS21NDS | 443-961 74LS21 74LS21DC 74LS21PC ECG74LS21 GD74LS21 HD74LS21 HD74LS21P M74LS21P MB74LS21 MB74LS21M N74LS21F N74LS21N NTE74LS21 SK1920 SN74LS21 SN74LS21J SN74LS21JD SN74LS21JDS SN74LS21JS SN74LS21N SN74LS21ND SN74LS21NDS SN74LS21NS T74LS21B1 T74LS21D1 TCG74LS21 |
| 17 | SN74LS21NS | 443-961 74LS21 74LS21DC 74LS21PC ECG74LS21 GD74LS21 HD74LS21 HD74LS21P M74LS21P MB74LS21 MB74LS21M N74LS21F N74LS21N NTE74LS21 SK1920 SN74LS21 SN74LS21J SN74LS21JD SN74LS21JDS SN74LS21JS SN74LS21N SN74LS21ND SN74LS21NDS SN74LS21NS T74LS21B1 T74LS21D1 TCG74LS21 |
| 18 | SN74LS22 | 8210063 74LS22 74LS22PC ECG74LS22 HD74LS22 HD74LS22P M74LS22P MB74LS22 MB74LS22M N74LS22F N74LS22N NTE74LS22 SK74LS22 SN74LS22 SN74LS22J SN74LS22JD SN74LS22JDS SIST74LS22JS SN74LS22N SN74LS22ND SN74LS22NDS SN74LS22NS T74LS22B1 T74LS22D1 TCG74LS22 |
| 19 | SN74LS221 | 6300656 178744 74221 74LS221 74LS221CH 74LS221J 74LS221W AMX3810 ECG74LS221 HD74LS221 HD74LS221P M74LS221P MB74LS221 MB74LS221M N74LS221F N74LS221N NTE74LS221 POSN74LS221N S4LS221N SK74LS221 SN74LS221 SN74LS221J SN74LS221JD SN74LS221JDS SN74LS221JS SN74LS221N SN74LS221ND SN74LS221NDS SN74LS221NS SN74LS221W TCG74LS221 TVSS4LS221N VHIHD74LS221/ X420302210 |
| 20 | SN74LS221J | 6300656 178744 74221 74LS221 74LS221CH 74LS221J 74LS221W AMX3810 ECG74LS221 HD74LS221 HD74LS221P M74LS221P MB74LS221 MB74LS221M N74LS221F N74LS221N NTE74LS221 POSN74LS221N S4LS221N SK74LS221 SN74LS221 SN74LS221J SN74LS221JD SN74LS221JDS SN74LS221JS SN74LS221N SN74LS221ND SN74LS221NDS SN74LS221NS SN74LS221W TCG74LS221 TVSS4LS221N VHIHD74LS221/ X420302210 |
| 21 | SN74LS221JD | 6300656 178744 74221 74LS221 74LS221CH 74LS221J 74LS221W AMX3810 ECG74LS221 HD74LS221 HD74LS221P M74LS221P MB74LS221 MB74LS221M N74LS221F N74LS221N NTE74LS221 POSN74LS221N S4LS221N SK74LS221 SN74LS221 SN74LS221J SN74LS221JD SN74LS221JDS SN74LS221JS SN74LS221N SN74LS221ND SN74LS221NDS SN74LS221NS SN74LS221W TCG74LS221 TVSS4LS221N VHIHD74LS221/ X420302210 |
| 22 | SN74LS221JDS | 6300656 178744 74221 74LS221 74LS221CH 74LS221J 74LS221W AMX3810 ECG74LS221 HD74LS221 HD74LS221P M74LS221P MB74LS221 MB74LS221M N74LS221F N74LS221N NTE74LS221 POSN74LS221N S4LS221N SK74LS221 SN74LS221 SN74LS221J SN74LS221JD SN74LS221JDS SN74LS221JS SN74LS221N SN74LS221ND SN74LS221NDS SN74LS221NS SN74LS221W TCG74LS221 TVSS4LS221N VHIHD74LS221/ X420302210 |
| 23 | SN74LS245JS | 443-885 74LS245 74LS245DC 74LS245N 74LS245NA 74LS245PC 802-0245 8020245 AMX4470 DM74LS245N DN74LS245P EAQOO-22100 ECG74LS245 GD74LS245 HD74LS245WP HE-443-885 I61DLS2450 LS245 M74LS245P MB74LS245 MB74LS245M N74LS245F N74LS245N NTE74LS245 ON74LS245N POSN74LS245N SK74LS245 SN74LS245 SN74LS245J SN74LS245JD SN74LS245JDS SN74LS245JS SN74LS245N SN74LS245ND SN74LS245NDS SN74LS245NS TCG74LS245 X420302450 |
| 24 | SN74LS245N | 443-885 74LS245 74LS245DC 74LS245N 74LS245NA 74LS245PC 802-0245 8020245 AMX4470 DM74LS245N DN74LS245P EAQOO-22100 ECG74LS245 GD74LS245 HD74LS245WP HE-443-885 I61DLS2450 LS245 M74LS245P MB74LS245 MB74LS245M N74LS245F N74LS245N NTE74LS245 ON74LS245N POSN74LS245N SK74LS245 SN74LS245 SN74LS245J SN74LS245JD SN74LS245JDS SN74LS245JS SN74LS245N SN74LS245ND SN74LS245NDS SN74LS245NS TCG74LS245 X420302450 |
| 25 | SN74LS245ND | 443-885 74LS245 74LS245DC 74LS245N 74LS245NA 74LS245PC 802-0245 8020245 AMX4470 DM74LS245N DN74LS245P EAQOO-22100 ECG74LS245 GD74LS245 HD74LS245WP HE-443-885 I61DLS2450 LS245 M74LS245P MB74LS245 MB74LS245M N74LS245F N74LS245N NTE74LS245 ON74LS245N POSN74LS245N SK74LS245 SN74LS245 SN74LS245J SN74LS245JD SN74LS245JDS SN74LS245JS SN74LS245N SN74LS245ND SN74LS245NDS SN74LS245NS TCG74LS245 X420302450 |
| 26 | SN74LS245NDS | 443-885 74LS245 74LS245DC 74LS245N 74LS245NA 74LS245PC 802-0245 8020245 AMX4470 DM74LS245N DN74LS245P EAQOO-22100 ECG74LS245 GD74LS245 HD74LS245WP HE-443-885 I61DLS2450 LS245 M74LS245P MB74LS245 MB74LS245M N74LS245F N74LS245N NTE74LS245 ON74LS245N POSN74LS245N SK74LS245 SN74LS245 SN74LS245J SN74LS245JD SN74LS245JDS SN74LS245JS SN74LS245N SN74LS245ND SN74LS245NDS SN74LS245NS TCG74LS245 X420302450 |
| 27 | SN74LS245NS | 443-885 74LS245 74LS245DC 74LS245N 74LS245NA 74LS245PC 802-0245 8020245 AMX4470 DM74LS245N DN74LS245P EAQOO-22100 ECG74LS245 GD74LS245 HD74LS245WP HE-443-885 I61DLS2450 LS245 M74LS245P MB74LS245 MB74LS245M N74LS245F N74LS245N NTE74LS245 ON74LS245N POSN74LS245N SK74LS245 SN74LS245 SN74LS245J SN74LS245JD SN74LS245JDS SN74LS245JS SN74LS245N SN74LS245ND SN74LS245NDS SN74LS245NS TCG74LS245 X420302450 |
| 28 | SN74LS247 | 443-711 74LS247DC 74LS247PC 74LS248DC DM74LS247N ECG74LS247 HD74LS247 HD74LS247P HE-443-711 M74LS247P MB74LS247 MB74LS247M NTE74LS247 SK74LS247 SN74LS247 SN74LS247J SN74LS247JD SN74LS247JDS SN74LS247JS SN74LS247N SN74LS247ND SN74LS247NDS SN74LS247NS SW74LS247 TCG74LS247 BLOCK-1637 74LS248PC ECG74LS248 HD74LS248 HD74LS248P M74LS248P MB74LS248 MB74LS248M NTE74LS248 SK74LS248 SN74LS248 SN74LS248J SN74LS248JD SN74LS248JDS SN74LS248JS SN74LS248N SN74LS248ND SN74LS248NDS SN74LS248NS TCG74LS248 |
| 29 | SN74LS247J | 443-711 74LS247DC 74LS247PC 74LS248DC DM74LS247N ECG74LS247 HD74LS247 HD74LS247P HE-443-711 M74LS247P MB74LS247 MB74LS247M NTE74LS247 SK74LS247 SN74LS247 SN74LS247J SN74LS247JD SN74LS247JDS SN74LS247JS SN74LS247N SN74LS247ND SN74LS247NDS SN74LS247NS SW74LS247 TCG74LS247 BLOCK-1637 74LS248PC ECG74LS248 HD74LS248 HD74LS248P M74LS248P MB74LS248 MB74LS248M NTE74LS248 SK74LS248 SN74LS248 SN74LS248J SN74LS248JD SN74LS248JDS SN74LS248JS SN74LS248N SN74LS248ND SN74LS248NDS SN74LS248NS TCG74LS248 |
| 30 | SN74LS247JD | 443-711 74LS247DC 74LS247PC 74LS248DC DM74LS247N ECG74LS247 HD74LS247 HD74LS247P HE-443-711 M74LS247P MB74LS247 MB74LS247M NTE74LS247 SK74LS247 SN74LS247 SN74LS247J SN74LS247JD SN74LS247JDS SN74LS247JS SN74LS247N SN74LS247ND SN74LS247NDS SN74LS247NS SW74LS247 TCG74LS247 BLOCK-1637 74LS248PC ECG74LS248 HD74LS248 HD74LS248P M74LS248P MB74LS248 MB74LS248M NTE74LS248 SK74LS248 SN74LS248 SN74LS248J SN74LS248JD SN74LS248JDS SN74LS248JS SN74LS248N SN74LS248ND SN74LS248NDS SN74LS248NS TCG74LS248 |
| 31 | SN74LS247JDS | 443-711 74LS247DC 74LS247PC 74LS248DC DM74LS247N ECG74LS247 HD74LS247 HD74LS247P HE-443-711 M74LS247P MB74LS247 MB74LS247M NTE74LS247 SK74LS247 SN74LS247 SN74LS247J SN74LS247JD SN74LS247JDS SN74LS247JS SN74LS247N SN74LS247ND SN74LS247NDS SN74LS247NS SW74LS247 TCG74LS247 BLOCK-1637 74LS248PC ECG74LS248 HD74LS248 HD74LS248P M74LS248P MB74LS248 MB74LS248M NTE74LS248 SK74LS248 SN74LS248 SN74LS248J SN74LS248JD SN74LS248JDS SN74LS248JS SN74LS248N SN74LS248ND SN74LS248NDS SN74LS248NS TCG74LS248 |
| 32 | SN74LS247JS | 443-711 74LS247DC 74LS247PC 74LS248DC DM74LS247N ECG74LS247 HD74LS247 HD74LS247P HE-443-711 M74LS247P MB74LS247 MB74LS247M NTE74LS247 SK74LS247 SN74LS247 SN74LS247J SN74LS247JD SN74LS247JDS SN74LS247JS SN74LS247N SN74LS247ND SN74LS247NDS SN74LS247NS SW74LS247 TCG74LS247 BLOCK-1637 74LS248PC ECG74LS248 HD74LS248 HD74LS248P M74LS248P MB74LS248 MB74LS248M NTE74LS248 SK74LS248 SN74LS248 SN74LS248J SN74LS248JD SN74LS248JDS SN74LS248JS SN74LS248N SN74LS248ND SN74LS248NDS SN74LS248NS TCG74LS248 |
| 33 | SN74LS247N | 443-711 74LS247DC 74LS247PC 74LS248DC DM74LS247N ECG74LS247 HD74LS247 HD74LS247P HE-443-711 M74LS247P MB74LS247 MB74LS247M NTE74LS247 SK74LS247 SN74LS247 SN74LS247J SN74LS247JD SN74LS247JDS SN74LS247JS SN74LS247N SN74LS247ND SN74LS247NDS SN74LS247NS SW74LS247 TCG74LS247 BLOCK-1637 74LS248PC ECG74LS248 HD74LS248 HD74LS248P M74LS248P MB74LS248 MB74LS248M NTE74LS248 SK74LS248 SN74LS248 SN74LS248J SN74LS248JD SN74LS248JDS SN74LS248JS SN74LS248N SN74LS248ND SN74LS248NDS SN74LS248NS TCG74LS248 |
| 34 | SN74LS247ND | 443-711 74LS247DC 74LS247PC 74LS248DC DM74LS247N ECG74LS247 HD74LS247 HD74LS247P HE-443-711 M74LS247P MB74LS247 MB74LS247M NTE74LS247 SK74LS247 SN74LS247 SN74LS247J SN74LS247JD SN74LS247JDS SN74LS247JS SN74LS247N SN74LS247ND SN74LS247NDS SN74LS247NS SW74LS247 TCG74LS247 BLOCK-1637 74LS248PC ECG74LS248 HD74LS248 HD74LS248P M74LS248P MB74LS248 MB74LS248M NTE74LS248 SK74LS248 SN74LS248 SN74LS248J SN74LS248JD SN74LS248JDS SN74LS248JS SN74LS248N SN74LS248ND SN74LS248NDS SN74LS248NS TCG74LS248 |
| 35 | SN74LS247NDS | 443-711 74LS247DC 74LS247PC 74LS248DC DM74LS247N ECG74LS247 HD74LS247 HD74LS247P HE-443-711 M74LS247P MB74LS247 MB74LS247M NTE74LS247 SK74LS247 SN74LS247 SN74LS247J SN74LS247JD SN74LS247JDS SN74LS247JS SN74LS247N SN74LS247ND SN74LS247NDS SN74LS247NS SW74LS247 TCG74LS247 BLOCK-1637 74LS248PC ECG74LS248 HD74LS248 HD74LS248P M74LS248P MB74LS248 MB74LS248M NTE74LS248 SK74LS248 SN74LS248 SN74LS248J SN74LS248JD SN74LS248JDS SN74LS248JS SN74LS248N SN74LS248ND SN74LS248NDS SN74LS248NS TCG74LS248 |
| 36 | SN74LS247NS | 443-711 74LS247DC 74LS247PC 74LS248DC DM74LS247N ECG74LS247 HD74LS247 HD74LS247P HE-443-711 M74LS247P MB74LS247 MB74LS247M NTE74LS247 SK74LS247 SN74LS247 SN74LS247J SN74LS247JD SN74LS247JDS SN74LS247JS SN74LS247N SN74LS247ND SN74LS247NDS SN74LS247NS SW74LS247 TCG74LS247 BLOCK-1637 74LS248PC ECG74LS248 HD74LS248 HD74LS248P M74LS248P MB74LS248 MB74LS248M NTE74LS248 SK74LS248 SN74LS248 SN74LS248J SN74LS248JD SN74LS248JDS SN74LS248JS SN74LS248N SN74LS248ND SN74LS248NDS SN74LS248NS TCG74LS248 |
| 37 | SN74LS249 | 74LS249DC 74LS249PC ECG74LS249 HD74LS249 HD74LS249P MB74LS249 MB74LS249M MH746 NTE74LS249 SK74LS249 SN74LS249 SN74LS249J SN74LS249JD SN74LS249JDS SN74LS249JS SN74LS249N SN74LS249ND SN74LS249NDS SN74LS249NS TCG74LS249 |
| 38 | SN74LS249J | 74LS249DC 74LS249PC ECG74LS249 HD74LS249 HD74LS249P MB74LS249 MB74LS249M MH746 NTE74LS249 SK74LS249 SN74LS249 SN74LS249J SN74LS249JD SN74LS249JDS SN74LS249JS SN74LS249N SN74LS249ND SN74LS249NDS SN74LS249NS TCG74LS249 |
| 39 | SN74LS249JD | 74LS249DC 74LS249PC ECG74LS249 HD74LS249 HD74LS249P MB74LS249 MB74LS249M MH746 NTE74LS249 SK74LS249 SN74LS249 SN74LS249J SN74LS249JD SN74LS249JDS SN74LS249JS SN74LS249N SN74LS249ND SN74LS249NDS SN74LS249NS TCG74LS249 |
| 40 | SN74LS249JDS | 74LS249DC 74LS249PC ECG74LS249 HD74LS249 HD74LS249P MB74LS249 MB74LS249M MH746 NTE74LS249 SK74LS249 SN74LS249 SN74LS249J SN74LS249JD SN74LS249JDS SN74LS249JS SN74LS249N SN74LS249ND SN74LS249NDS SN74LS249NS TCG74LS249 |
