| 序号 | 芯片名称 | 代换型号 |
|---|---|---|
| 1 | SN74LS249JS | 74LS249DC 74LS249PC ECG74LS249 HD74LS249 HD74LS249P MB74LS249 MB74LS249M MH746 NTE74LS249 SK74LS249 SN74LS249 SN74LS249J SN74LS249JD SN74LS249JDS SN74LS249JS SN74LS249N SN74LS249ND SN74LS249NDS SN74LS249NS TCG74LS249 |
| 2 | SN74LS249N | 74LS249DC 74LS249PC ECG74LS249 HD74LS249 HD74LS249P MB74LS249 MB74LS249M MH746 NTE74LS249 SK74LS249 SN74LS249 SN74LS249J SN74LS249JD SN74LS249JDS SN74LS249JS SN74LS249N SN74LS249ND SN74LS249NDS SN74LS249NS TCG74LS249 |
| 3 | SN74LS249ND | 74LS249DC 74LS249PC ECG74LS249 HD74LS249 HD74LS249P MB74LS249 MB74LS249M MH746 NTE74LS249 SK74LS249 SN74LS249 SN74LS249J SN74LS249JD SN74LS249JDS SN74LS249JS SN74LS249N SN74LS249ND SN74LS249NDS SN74LS249NS TCG74LS249 |
| 4 | SN74LS249NDS | 74LS249DC 74LS249PC ECG74LS249 HD74LS249 HD74LS249P MB74LS249 MB74LS249M MH746 NTE74LS249 SK74LS249 SN74LS249 SN74LS249J SN74LS249JD SN74LS249JDS SN74LS249JS SN74LS249N SN74LS249ND SN74LS249NDS SN74LS249NS TCG74LS249 |
| 5 | SN74LS249NS | 74LS249DC 74LS249PC ECG74LS249 HD74LS249 HD74LS249P MB74LS249 MB74LS249M MH746 NTE74LS249 SK74LS249 SN74LS249 SN74LS249J SN74LS249JD SN74LS249JDS SN74LS249JS SN74LS249N SN74LS249ND SN74LS249NDS SN74LS249NS TCG74LS249 |
| 6 | SN74LS251 | 74LS251DC 74LS251PC C74LS251P DM74LS251N ECG74LS251 HD74LS251 HD74LS251P HEPC74LS251P M74LS251P MB74LS251 MB74LS251M N74LS251AF N74LS251AN NTE74LS251 SK1919 SN74LS251 SN74LS25U SN74LS251JD SN74LS251JDS SN74LS25US SN74LS251N SN74LS251ND SN74LS251NDS SN74LS251NS SN74LS251X TCG74LS251 |
| 7 | SN74LS251J | 74LS251DC 74LS251PC C74LS251P DM74LS251N ECG74LS251 HD74LS251 HD74LS251P HEPC74LS251P M74LS251P MB74LS251 MB74LS251M N74LS251AF N74LS251AN NTE74LS251 SK1919 SN74LS251 SN74LS25U SN74LS251JD SN74LS251JDS SN74LS25US SN74LS251N SN74LS251ND SN74LS251NDS SN74LS251NS SN74LS251X TCG74LS251 |
| 8 | SN74LS251JD | 74LS251DC 74LS251PC C74LS251P DM74LS251N ECG74LS251 HD74LS251 HD74LS251P HEPC74LS251P M74LS251P MB74LS251 MB74LS251M N74LS251AF N74LS251AN NTE74LS251 SK1919 SN74LS251 SN74LS25U SN74LS251JD SN74LS251JDS SN74LS25US SN74LS251N SN74LS251ND SN74LS251NDS SN74LS251NS SN74LS251X TCG74LS251 |
| 9 | SN74LS251JDS | 74LS251DC 74LS251PC C74LS251P DM74LS251N ECG74LS251 HD74LS251 HD74LS251P HEPC74LS251P M74LS251P MB74LS251 MB74LS251M N74LS251AF N74LS251AN NTE74LS251 SK1919 SN74LS251 SN74LS25U SN74LS251JD SN74LS251JDS SN74LS25US SN74LS251N SN74LS251ND SN74LS251NDS SN74LS251NS SN74LS251X TCG74LS251 |
| 10 | SN74LS251JS | 74LS251DC 74LS251PC C74LS251P DM74LS251N ECG74LS251 HD74LS251 HD74LS251P HEPC74LS251P M74LS251P MB74LS251 MB74LS251M N74LS251AF N74LS251AN NTE74LS251 SK1919 SN74LS251 SN74LS25U SN74LS251JD SN74LS251JDS SN74LS25US SN74LS251N SN74LS251ND SN74LS251NDS SN74LS251NS SN74LS251X TCG74LS251 |
| 11 | SN74LS251N | 74LS251DC 74LS251PC C74LS251P DM74LS251N ECG74LS251 HD74LS251 HD74LS251P HEPC74LS251P M74LS251P MB74LS251 MB74LS251M N74LS251AF N74LS251AN NTE74LS251 SK1919 SN74LS251 SN74LS25U SN74LS251JD SN74LS251JDS SN74LS25US SN74LS251N SN74LS251ND SN74LS251NDS SN74LS251NS SN74LS251X TCG74LS251 |
| 12 | SN74LS251ND | 74LS251DC 74LS251PC C74LS251P DM74LS251N ECG74LS251 HD74LS251 HD74LS251P HEPC74LS251P M74LS251P MB74LS251 MB74LS251M N74LS251AF N74LS251AN NTE74LS251 SK1919 SN74LS251 SN74LS25U SN74LS251JD SN74LS251JDS SN74LS25US SN74LS251N SN74LS251ND SN74LS251NDS SN74LS251NS SN74LS251X TCG74LS251 |
| 13 | SN74LS251NDS | 74LS251DC 74LS251PC C74LS251P DM74LS251N ECG74LS251 HD74LS251 HD74LS251P HEPC74LS251P M74LS251P MB74LS251 MB74LS251M N74LS251AF N74LS251AN NTE74LS251 SK1919 SN74LS251 SN74LS25U SN74LS251JD SN74LS251JDS SN74LS25US SN74LS251N SN74LS251ND SN74LS251NDS SN74LS251NS SN74LS251X TCG74LS251 |
| 14 | SN74LS251NS | 74LS251DC 74LS251PC C74LS251P DM74LS251N ECG74LS251 HD74LS251 HD74LS251P HEPC74LS251P M74LS251P MB74LS251 MB74LS251M N74LS251AF N74LS251AN NTE74LS251 SK1919 SN74LS251 SN74LS25U SN74LS251JD SN74LS251JDS SN74LS25US SN74LS251N SN74LS251ND SN74LS251NDS SN74LS251NS SN74LS251X TCG74LS251 |
| 15 | SN74LS251X | 74LS251DC 74LS251PC C74LS251P DM74LS251N ECG74LS251 HD74LS251 HD74LS251P HEPC74LS251P M74LS251P MB74LS251 MB74LS251M N74LS251AF N74LS251AN NTE74LS251 SK1919 SN74LS251 SN74LS25U SN74LS251JD SN74LS251JDS SN74LS25US SN74LS251N SN74LS251ND SN74LS251NDS SN74LS251NS SN74LS251X TCG74LS251 |
| 16 | SN74LS253 | 74LS253DC 74LS253PC C74LS253P DM74LS253N ECG74LS253 HD74LS253 HD74LS253P HEPC74LS253P M74LS253P MB74LS253 MB74LS253M N74LS253F N74LS253N NTE74LS253 SK74LS253 SN74LS253 SN74LS253J SN74LS253JD SN74LS253JDS SN74LS253JS SN74LS253N SN74LS253ND SN74LS253NDS SN74LS253NS TCG74LS253 |
| 17 | SN74LS253J | 74LS253DC 74LS253PC C74LS253P DM74LS253N ECG74LS253 HD74LS253 HD74LS253P HEPC74LS253P M74LS253P MB74LS253 MB74LS253M N74LS253F N74LS253N NTE74LS253 SK74LS253 SN74LS253 SN74LS253J SN74LS253JD SN74LS253JDS SN74LS253JS SN74LS253N SN74LS253ND SN74LS253NDS SN74LS253NS TCG74LS253 |
| 18 | SN74LS253JD | 74LS253DC 74LS253PC C74LS253P DM74LS253N ECG74LS253 HD74LS253 HD74LS253P HEPC74LS253P M74LS253P MB74LS253 MB74LS253M N74LS253F N74LS253N NTE74LS253 SK74LS253 SN74LS253 SN74LS253J SN74LS253JD SN74LS253JDS SN74LS253JS SN74LS253N SN74LS253ND SN74LS253NDS SN74LS253NS TCG74LS253 |
| 19 | SN74LS253JDS | 74LS253DC 74LS253PC C74LS253P DM74LS253N ECG74LS253 HD74LS253 HD74LS253P HEPC74LS253P M74LS253P MB74LS253 MB74LS253M N74LS253F N74LS253N NTE74LS253 SK74LS253 SN74LS253 SN74LS253J SN74LS253JD SN74LS253JDS SN74LS253JS SN74LS253N SN74LS253ND SN74LS253NDS SN74LS253NS TCG74LS253 |
| 20 | SN74LS253JS | 74LS253DC 74LS253PC C74LS253P DM74LS253N ECG74LS253 HD74LS253 HD74LS253P HEPC74LS253P M74LS253P MB74LS253 MB74LS253M N74LS253F N74LS253N NTE74LS253 SK74LS253 SN74LS253 SN74LS253J SN74LS253JD SN74LS253JDS SN74LS253JS SN74LS253N SN74LS253ND SN74LS253NDS SN74LS253NS TCG74LS253 |
| 21 | SN74LS253N | 74LS253DC 74LS253PC C74LS253P DM74LS253N ECG74LS253 HD74LS253 HD74LS253P HEPC74LS253P M74LS253P MB74LS253 MB74LS253M N74LS253F N74LS253N NTE74LS253 SK74LS253 SN74LS253 SN74LS253J SN74LS253JD SN74LS253JDS SN74LS253JS SN74LS253N SN74LS253ND SN74LS253NDS SN74LS253NS TCG74LS253 |
| 22 | SN74LS253ND | 74LS253DC 74LS253PC C74LS253P DM74LS253N ECG74LS253 HD74LS253 HD74LS253P HEPC74LS253P M74LS253P MB74LS253 MB74LS253M N74LS253F N74LS253N NTE74LS253 SK74LS253 SN74LS253 SN74LS253J SN74LS253JD SN74LS253JDS SN74LS253JS SN74LS253N SN74LS253ND SN74LS253NDS SN74LS253NS TCG74LS253 |
| 23 | SN74LS253NDS | 74LS253DC 74LS253PC C74LS253P DM74LS253N ECG74LS253 HD74LS253 HD74LS253P HEPC74LS253P M74LS253P MB74LS253 MB74LS253M N74LS253F N74LS253N NTE74LS253 SK74LS253 SN74LS253 SN74LS253J SN74LS253JD SN74LS253JDS SN74LS253JS SN74LS253N SN74LS253ND SN74LS253NDS SN74LS253NS TCG74LS253 |
| 24 | SN74LS253NS | 74LS253DC 74LS253PC C74LS253P DM74LS253N ECG74LS253 HD74LS253 HD74LS253P HEPC74LS253P M74LS253P MB74LS253 MB74LS253M N74LS253F N74LS253N NTE74LS253 SK74LS253 SN74LS253 SN74LS253J SN74LS253JD SN74LS253JDS SN74LS253JS SN74LS253N SN74LS253ND SN74LS253NDS SN74LS253NS TCG74LS253 |
| 25 | SN74LS257 | 8210040 443-802 74LS257 74LS257A 74LS257AN 74LS257APC 74LS257DC 74LS257N 74LS257PC 901521-57 9334DC 9334DM C74LS257P DM74LS257BN EAQOO-23600 ECG74LS257 HD74LS257 HD74LS257P HE-443-1037 HE-443-802 HEPC74LS257P M74LS257AP MB74LS257 MB74LS257M N74LS257AF N74LS257AN NTE74LS257 SK74LS257 SN74LS257 SN74LS257AJ SN74LS257AJD SN74LS257AJDS SN74LS257AJS SN74LS257AN SN74LS257AND SN74LS257ANDS SN74LS257ANS SN74LS257BN SN74LS257J SN74LS257N SN74LS257X T74LS257B1 TCG74LS257 |
| 26 | SN74LS257AJ | 8210040 443-802 74LS257 74LS257A 74LS257AN 74LS257APC 74LS257DC 74LS257N 74LS257PC 901521-57 9334DC 9334DM C74LS257P DM74LS257BN EAQOO-23600 ECG74LS257 HD74LS257 HD74LS257P HE-443-1037 HE-443-802 HEPC74LS257P M74LS257AP MB74LS257 MB74LS257M N74LS257AF N74LS257AN NTE74LS257 SK74LS257 SN74LS257 SN74LS257AJ SN74LS257AJD SN74LS257AJDS SN74LS257AJS SN74LS257AN SN74LS257AND SN74LS257ANDS SN74LS257ANS SN74LS257BN SN74LS257J SN74LS257N SN74LS257X T74LS257B1 TCG74LS257 |
| 27 | SN74LS257AJD | 8210040 443-802 74LS257 74LS257A 74LS257AN 74LS257APC 74LS257DC 74LS257N 74LS257PC 901521-57 9334DC 9334DM C74LS257P DM74LS257BN EAQOO-23600 ECG74LS257 HD74LS257 HD74LS257P HE-443-1037 HE-443-802 HEPC74LS257P M74LS257AP MB74LS257 MB74LS257M N74LS257AF N74LS257AN NTE74LS257 SK74LS257 SN74LS257 SN74LS257AJ SN74LS257AJD SN74LS257AJDS SN74LS257AJS SN74LS257AN SN74LS257AND SN74LS257ANDS SN74LS257ANS SN74LS257BN SN74LS257J SN74LS257N SN74LS257X T74LS257B1 TCG74LS257 |
| 28 | SN74LS257AJDS | 8210040 443-802 74LS257 74LS257A 74LS257AN 74LS257APC 74LS257DC 74LS257N 74LS257PC 901521-57 9334DC 9334DM C74LS257P DM74LS257BN EAQOO-23600 ECG74LS257 HD74LS257 HD74LS257P HE-443-1037 HE-443-802 HEPC74LS257P M74LS257AP MB74LS257 MB74LS257M N74LS257AF N74LS257AN NTE74LS257 SK74LS257 SN74LS257 SN74LS257AJ SN74LS257AJD SN74LS257AJDS SN74LS257AJS SN74LS257AN SN74LS257AND SN74LS257ANDS SN74LS257ANS SN74LS257BN SN74LS257J SN74LS257N SN74LS257X T74LS257B1 TCG74LS257 |
| 29 | SN74LS257AJS | 8210040 443-802 74LS257 74LS257A 74LS257AN 74LS257APC 74LS257DC 74LS257N 74LS257PC 901521-57 9334DC 9334DM C74LS257P DM74LS257BN EAQOO-23600 ECG74LS257 HD74LS257 HD74LS257P HE-443-1037 HE-443-802 HEPC74LS257P M74LS257AP MB74LS257 MB74LS257M N74LS257AF N74LS257AN NTE74LS257 SK74LS257 SN74LS257 SN74LS257AJ SN74LS257AJD SN74LS257AJDS SN74LS257AJS SN74LS257AN SN74LS257AND SN74LS257ANDS SN74LS257ANS SN74LS257BN SN74LS257J SN74LS257N SN74LS257X T74LS257B1 TCG74LS257 |
| 30 | SN74LS257AN | 8210040 443-802 74LS257 74LS257A 74LS257AN 74LS257APC 74LS257DC 74LS257N 74LS257PC 901521-57 9334DC 9334DM C74LS257P DM74LS257BN EAQOO-23600 ECG74LS257 HD74LS257 HD74LS257P HE-443-1037 HE-443-802 HEPC74LS257P M74LS257AP MB74LS257 MB74LS257M N74LS257AF N74LS257AN NTE74LS257 SK74LS257 SN74LS257 SN74LS257AJ SN74LS257AJD SN74LS257AJDS SN74LS257AJS SN74LS257AN SN74LS257AND SN74LS257ANDS SN74LS257ANS SN74LS257BN SN74LS257J SN74LS257N SN74LS257X T74LS257B1 TCG74LS257 |
| 31 | SN74LS257AND | 8210040 443-802 74LS257 74LS257A 74LS257AN 74LS257APC 74LS257DC 74LS257N 74LS257PC 901521-57 9334DC 9334DM C74LS257P DM74LS257BN EAQOO-23600 ECG74LS257 HD74LS257 HD74LS257P HE-443-1037 HE-443-802 HEPC74LS257P M74LS257AP MB74LS257 MB74LS257M N74LS257AF N74LS257AN NTE74LS257 SK74LS257 SN74LS257 SN74LS257AJ SN74LS257AJD SN74LS257AJDS SN74LS257AJS SN74LS257AN SN74LS257AND SN74LS257ANDS SN74LS257ANS SN74LS257BN SN74LS257J SN74LS257N SN74LS257X T74LS257B1 TCG74LS257 |
| 32 | SN74LS257ANDS | 8210040 443-802 74LS257 74LS257A 74LS257AN 74LS257APC 74LS257DC 74LS257N 74LS257PC 901521-57 9334DC 9334DM C74LS257P DM74LS257BN EAQOO-23600 ECG74LS257 HD74LS257 HD74LS257P HE-443-1037 HE-443-802 HEPC74LS257P M74LS257AP MB74LS257 MB74LS257M N74LS257AF N74LS257AN NTE74LS257 SK74LS257 SN74LS257 SN74LS257AJ SN74LS257AJD SN74LS257AJDS SN74LS257AJS SN74LS257AN SN74LS257AND SN74LS257ANDS SN74LS257ANS SN74LS257BN SN74LS257J SN74LS257N SN74LS257X T74LS257B1 TCG74LS257 |
| 33 | SN74LS257ANS | 8210040 443-802 74LS257 74LS257A 74LS257AN 74LS257APC 74LS257DC 74LS257N 74LS257PC 901521-57 9334DC 9334DM C74LS257P DM74LS257BN EAQOO-23600 ECG74LS257 HD74LS257 HD74LS257P HE-443-1037 HE-443-802 HEPC74LS257P M74LS257AP MB74LS257 MB74LS257M N74LS257AF N74LS257AN NTE74LS257 SK74LS257 SN74LS257 SN74LS257AJ SN74LS257AJD SN74LS257AJDS SN74LS257AJS SN74LS257AN SN74LS257AND SN74LS257ANDS SN74LS257ANS SN74LS257BN SN74LS257J SN74LS257N SN74LS257X T74LS257B1 TCG74LS257 |
| 34 | SN74LS257BN | 8210040 443-802 74LS257 74LS257A 74LS257AN 74LS257APC 74LS257DC 74LS257N 74LS257PC 901521-57 9334DC 9334DM C74LS257P DM74LS257BN EAQOO-23600 ECG74LS257 HD74LS257 HD74LS257P HE-443-1037 HE-443-802 HEPC74LS257P M74LS257AP MB74LS257 MB74LS257M N74LS257AF N74LS257AN NTE74LS257 SK74LS257 SN74LS257 SN74LS257AJ SN74LS257AJD SN74LS257AJDS SN74LS257AJS SN74LS257AN SN74LS257AND SN74LS257ANDS SN74LS257ANS SN74LS257BN SN74LS257J SN74LS257N SN74LS257X T74LS257B1 TCG74LS257 |
| 35 | SN74LS257J | 8210040 443-802 74LS257 74LS257A 74LS257AN 74LS257APC 74LS257DC 74LS257N 74LS257PC 901521-57 9334DC 9334DM C74LS257P DM74LS257BN EAQOO-23600 ECG74LS257 HD74LS257 HD74LS257P HE-443-1037 HE-443-802 HEPC74LS257P M74LS257AP MB74LS257 MB74LS257M N74LS257AF N74LS257AN NTE74LS257 SK74LS257 SN74LS257 SN74LS257AJ SN74LS257AJD SN74LS257AJDS SN74LS257AJS SN74LS257AN SN74LS257AND SN74LS257ANDS SN74LS257ANS SN74LS257BN SN74LS257J SN74LS257N SN74LS257X T74LS257B1 TCG74LS257 |
| 36 | SN74LS257N | 8210040 443-802 74LS257 74LS257A 74LS257AN 74LS257APC 74LS257DC 74LS257N 74LS257PC 901521-57 9334DC 9334DM C74LS257P DM74LS257BN EAQOO-23600 ECG74LS257 HD74LS257 HD74LS257P HE-443-1037 HE-443-802 HEPC74LS257P M74LS257AP MB74LS257 MB74LS257M N74LS257AF N74LS257AN NTE74LS257 SK74LS257 SN74LS257 SN74LS257AJ SN74LS257AJD SN74LS257AJDS SN74LS257AJS SN74LS257AN SN74LS257AND SN74LS257ANDS SN74LS257ANS SN74LS257BN SN74LS257J SN74LS257N SN74LS257X T74LS257B1 TCG74LS257 |
| 37 | SN74LS257X | 8210040 443-802 74LS257 74LS257A 74LS257AN 74LS257APC 74LS257DC 74LS257N 74LS257PC 901521-57 9334DC 9334DM C74LS257P DM74LS257BN EAQOO-23600 ECG74LS257 HD74LS257 HD74LS257P HE-443-1037 HE-443-802 HEPC74LS257P M74LS257AP MB74LS257 MB74LS257M N74LS257AF N74LS257AN NTE74LS257 SK74LS257 SN74LS257 SN74LS257AJ SN74LS257AJD SN74LS257AJDS SN74LS257AJS SN74LS257AN SN74LS257AND SN74LS257ANDS SN74LS257ANS SN74LS257BN SN74LS257J SN74LS257N SN74LS257X T74LS257B1 TCG74LS257 |
| 38 | SN74LS258 | 74LS258 74LS258APC 74LS258DC 74LS258N 74LS258PC 901521-58 C74LS258P DM74LS258BN ECG74LS258 HD74LS258 HD74LS258P HEPC74LS258P M74LS258AP MB74LS258 MB74LS258M N74LS258AF N74LS258AN NTE74LS258 SK74LS258 SN74LS258 SN74LS258AJ SN74LS258AJD SN74LS258AJDS SN74LS258AJS SN74LS258AN SN74LS258AND SN74LS258ANDS SN74LS258ANS SN74LS258J SN74LS258N SN74LS258X TCG74LS258 |
| 39 | SN74LS258AJ | 74LS258 74LS258APC 74LS258DC 74LS258N 74LS258PC 901521-58 C74LS258P DM74LS258BN ECG74LS258 HD74LS258 HD74LS258P HEPC74LS258P M74LS258AP MB74LS258 MB74LS258M N74LS258AF N74LS258AN NTE74LS258 SK74LS258 SN74LS258 SN74LS258AJ SN74LS258AJD SN74LS258AJDS SN74LS258AJS SN74LS258AN SN74LS258AND SN74LS258ANDS SN74LS258ANS SN74LS258J SN74LS258N SN74LS258X TCG74LS258 |
| 40 | SN74LS258AJD | 74LS258 74LS258APC 74LS258DC 74LS258N 74LS258PC 901521-58 C74LS258P DM74LS258BN ECG74LS258 HD74LS258 HD74LS258P HEPC74LS258P M74LS258AP MB74LS258 MB74LS258M N74LS258AF N74LS258AN NTE74LS258 SK74LS258 SN74LS258 SN74LS258AJ SN74LS258AJD SN74LS258AJDS SN74LS258AJS SN74LS258AN SN74LS258AND SN74LS258ANDS SN74LS258ANS SN74LS258J SN74LS258N SN74LS258X TCG74LS258 |
