序号 | 芯片名称 | 代换型号 |
---|---|---|
1 | SN74LS166AN | 3102021 443-892 74LS166 AMX3564 DM74LS166N ECG74LS166 HD74LS166 HD74LS166P HE-443-B92 M74LS166AP M74LS166P NTE74LS166 POSN74LS166N SN74LS166 SN74LS166A SN74LS166AN SN74LS166J SN74LS166JD SN74LS166JDS SN74LS166JS SN74LS166N SN74LS166ND SN74LS166NDS SN74LS166NS |
2 | SN74LS166J | 3102021 443-892 74LS166 AMX3564 DM74LS166N ECG74LS166 HD74LS166 HD74LS166P HE-443-B92 M74LS166AP M74LS166P NTE74LS166 POSN74LS166N SN74LS166 SN74LS166A SN74LS166AN SN74LS166J SN74LS166JD SN74LS166JDS SN74LS166JS SN74LS166N SN74LS166ND SN74LS166NDS SN74LS166NS |
3 | SN74LS166JD | 3102021 443-892 74LS166 AMX3564 DM74LS166N ECG74LS166 HD74LS166 HD74LS166P HE-443-B92 M74LS166AP M74LS166P NTE74LS166 POSN74LS166N SN74LS166 SN74LS166A SN74LS166AN SN74LS166J SN74LS166JD SN74LS166JDS SN74LS166JS SN74LS166N SN74LS166ND SN74LS166NDS SN74LS166NS |
4 | SN74LS166JDS | 3102021 443-892 74LS166 AMX3564 DM74LS166N ECG74LS166 HD74LS166 HD74LS166P HE-443-B92 M74LS166AP M74LS166P NTE74LS166 POSN74LS166N SN74LS166 SN74LS166A SN74LS166AN SN74LS166J SN74LS166JD SN74LS166JDS SN74LS166JS SN74LS166N SN74LS166ND SN74LS166NDS SN74LS166NS |
5 | SN74LS166JS | 3102021 443-892 74LS166 AMX3564 DM74LS166N ECG74LS166 HD74LS166 HD74LS166P HE-443-B92 M74LS166AP M74LS166P NTE74LS166 POSN74LS166N SN74LS166 SN74LS166A SN74LS166AN SN74LS166J SN74LS166JD SN74LS166JDS SN74LS166JS SN74LS166N SN74LS166ND SN74LS166NDS SN74LS166NS |
6 | SN74LS166N | 3102021 443-892 74LS166 AMX3564 DM74LS166N ECG74LS166 HD74LS166 HD74LS166P HE-443-B92 M74LS166AP M74LS166P NTE74LS166 POSN74LS166N SN74LS166 SN74LS166A SN74LS166AN SN74LS166J SN74LS166JD SN74LS166JDS SN74LS166JS SN74LS166N SN74LS166ND SN74LS166NDS SN74LS166NS |
7 | SN74LS166ND | 3102021 443-892 74LS166 AMX3564 DM74LS166N ECG74LS166 HD74LS166 HD74LS166P HE-443-B92 M74LS166AP M74LS166P NTE74LS166 POSN74LS166N SN74LS166 SN74LS166A SN74LS166AN SN74LS166J SN74LS166JD SN74LS166JDS SN74LS166JS SN74LS166N SN74LS166ND SN74LS166NDS SN74LS166NS |
8 | SN74LS166NDS | 3102021 443-892 74LS166 AMX3564 DM74LS166N ECG74LS166 HD74LS166 HD74LS166P HE-443-B92 M74LS166AP M74LS166P NTE74LS166 POSN74LS166N SN74LS166 SN74LS166A SN74LS166AN SN74LS166J SN74LS166JD SN74LS166JDS SN74LS166JS SN74LS166N SN74LS166ND SN74LS166NDS SN74LS166NS |
9 | SN74LS166NS | 3102021 443-892 74LS166 AMX3564 DM74LS166N ECG74LS166 HD74LS166 HD74LS166P HE-443-B92 M74LS166AP M74LS166P NTE74LS166 POSN74LS166N SN74LS166 SN74LS166A SN74LS166AN SN74LS166J SN74LS166JD SN74LS166JDS SN74LS166JS SN74LS166N SN74LS166ND SN74LS166NDS SN74LS166NS |
10 | SN74LS168N | 74LS168DC 74LS168PC ECG74LS168A N74LS168AF N74LS168AN NTE74LS168A SK74LS168A SN74LS168N |
11 | SN74LS169AJ | 74LS169DC 74LS169PC ECG74LS169A N74LS169AF N74LS169AN NTE74LS169A SK74LS169A SN74LS169AJ SN74LS169AN SN74LS169B SN74LS169J SN74LS169N BLOCK-1613 74LS170DC 74LS170FC 74LS170PC C74LS170P DM74LS170N ECG74LS170 HEPC74LS170P M74LS170P N74LS170B N74LS170F N74LS170N NTE74LS170 SN74LS170 SM74LS170J SM74LS170JD SN74LS170JDS SN74LS170JS SN74LS170N SN74LS170ND SN74LS170NDS SW4LS170NS TCG74LS170 |
12 | SN74LS169AN | 74LS169DC 74LS169PC ECG74LS169A N74LS169AF N74LS169AN NTE74LS169A SK74LS169A SN74LS169AJ SN74LS169AN SN74LS169B SN74LS169J SN74LS169N BLOCK-1613 74LS170DC 74LS170FC 74LS170PC C74LS170P DM74LS170N ECG74LS170 HEPC74LS170P M74LS170P N74LS170B N74LS170F N74LS170N NTE74LS170 SN74LS170 SM74LS170J SM74LS170JD SN74LS170JDS SN74LS170JS SN74LS170N SN74LS170ND SN74LS170NDS SW4LS170NS TCG74LS170 |
13 | SN74LS169B | 74LS169DC 74LS169PC ECG74LS169A N74LS169AF N74LS169AN NTE74LS169A SK74LS169A SN74LS169AJ SN74LS169AN SN74LS169B SN74LS169J SN74LS169N BLOCK-1613 74LS170DC 74LS170FC 74LS170PC C74LS170P DM74LS170N ECG74LS170 HEPC74LS170P M74LS170P N74LS170B N74LS170F N74LS170N NTE74LS170 SN74LS170 SM74LS170J SM74LS170JD SN74LS170JDS SN74LS170JS SN74LS170N SN74LS170ND SN74LS170NDS SW4LS170NS TCG74LS170 |
14 | SN74LS169J | 74LS169DC 74LS169PC ECG74LS169A N74LS169AF N74LS169AN NTE74LS169A SK74LS169A SN74LS169AJ SN74LS169AN SN74LS169B SN74LS169J SN74LS169N BLOCK-1613 74LS170DC 74LS170FC 74LS170PC C74LS170P DM74LS170N ECG74LS170 HEPC74LS170P M74LS170P N74LS170B N74LS170F N74LS170N NTE74LS170 SN74LS170 SM74LS170J SM74LS170JD SN74LS170JDS SN74LS170JS SN74LS170N SN74LS170ND SN74LS170NDS SW4LS170NS TCG74LS170 |
15 | SN74LS169N | 74LS169DC 74LS169PC ECG74LS169A N74LS169AF N74LS169AN NTE74LS169A SK74LS169A SN74LS169AJ SN74LS169AN SN74LS169B SN74LS169J SN74LS169N BLOCK-1613 74LS170DC 74LS170FC 74LS170PC C74LS170P DM74LS170N ECG74LS170 HEPC74LS170P M74LS170P N74LS170B N74LS170F N74LS170N NTE74LS170 SN74LS170 SM74LS170J SM74LS170JD SN74LS170JDS SN74LS170JS SN74LS170N SN74LS170ND SN74LS170NDS SW4LS170NS TCG74LS170 |
16 | SN74LS173A | 74LS173A DM74LS173N ECG74LS173 M74LS173AP NTE74LS173A SK1922 SIST74LS173A SN74LS173AJ SN74LS173AJD SN74LS173AJDS SN74LS173AJS SN74LS173AN SN74LS173AND SN74LS173ANDS SN74LS173ANS TCG74LS173A |
17 | SN74LS173AJ | 74LS173A DM74LS173N ECG74LS173 M74LS173AP NTE74LS173A SK1922 SIST74LS173A SN74LS173AJ SN74LS173AJD SN74LS173AJDS SN74LS173AJS SN74LS173AN SN74LS173AND SN74LS173ANDS SN74LS173ANS TCG74LS173A |
18 | SN74LS173AJD | 74LS173A DM74LS173N ECG74LS173 M74LS173AP NTE74LS173A SK1922 SIST74LS173A SN74LS173AJ SN74LS173AJD SN74LS173AJDS SN74LS173AJS SN74LS173AN SN74LS173AND SN74LS173ANDS SN74LS173ANS TCG74LS173A |
19 | SN74LS173AJDS | 74LS173A DM74LS173N ECG74LS173 M74LS173AP NTE74LS173A SK1922 SIST74LS173A SN74LS173AJ SN74LS173AJD SN74LS173AJDS SN74LS173AJS SN74LS173AN SN74LS173AND SN74LS173ANDS SN74LS173ANS TCG74LS173A |
20 | SN74LS173AJS | 74LS173A DM74LS173N ECG74LS173 M74LS173AP NTE74LS173A SK1922 SIST74LS173A SN74LS173AJ SN74LS173AJD SN74LS173AJDS SN74LS173AJS SN74LS173AN SN74LS173AND SN74LS173ANDS SN74LS173ANS TCG74LS173A |
21 | SN74LS173AN | 74LS173A DM74LS173N ECG74LS173 M74LS173AP NTE74LS173A SK1922 SIST74LS173A SN74LS173AJ SN74LS173AJD SN74LS173AJDS SN74LS173AJS SN74LS173AN SN74LS173AND SN74LS173ANDS SN74LS173ANS TCG74LS173A |
22 | SN74LS173AND | 74LS173A DM74LS173N ECG74LS173 M74LS173AP NTE74LS173A SK1922 SIST74LS173A SN74LS173AJ SN74LS173AJD SN74LS173AJDS SN74LS173AJS SN74LS173AN SN74LS173AND SN74LS173ANDS SN74LS173ANS TCG74LS173A |
23 | SN74LS173ANDS | 74LS173A DM74LS173N ECG74LS173 M74LS173AP NTE74LS173A SK1922 SIST74LS173A SN74LS173AJ SN74LS173AJD SN74LS173AJDS SN74LS173AJS SN74LS173AN SN74LS173AND SN74LS173ANDS SN74LS173ANS TCG74LS173A |
24 | SN74LS173ANS | 74LS173A DM74LS173N ECG74LS173 M74LS173AP NTE74LS173A SK1922 SIST74LS173A SN74LS173AJ SN74LS173AJD SN74LS173AJDS SN74LS173AJS SN74LS173AN SN74LS173AND SN74LS173ANDS SN74LS173ANS TCG74LS173A |
25 | SN74LS174 | 3102022 443-879 74LS174 74LS174N 74LS174PC 9LS174DC 9LS174DM 9LS174PC AMX3565 C74LS174P DM74LS174N DN74LS174P EAQ00-13100 ECG74LS174 HD74LS174 HD74LS174P HE-443-879 HEPC74LS174P I61DLS1740 LS174 M74LS174P MB74LS174 MB74LS174M N74LS174B N74LS174F N74LS174N NTE74LS174 ON74LS174N SK74LS174 SN74LS174 SN74LS174J SN74LS174JD SN74LS174JDS SM74LS174JS SN74LS174N SN74LS174ND SN74LS174NDS SN74LS174NS T74LS174B1 TCG74LS174 BLOCK-1616 13-117-6 3102023 443-752 74LS175 74LS175DC 74LS175N 74LS175PC 901521-34 9LS175DC 9LS175PC AMX3566 C74LS175P DM74LS175N ECG74LS175 GD74LS175 HD74LS175 HD74LS175P HE-443-752 HEPC74LS175P M74LS175P MB74LS175 MB74LS175M N74LS175B N74LS175F N74LS175N NTE74LS175 ON74LS175N SK74LS175 SN74LS175 SN74LS175J SN74LS175JD SN74LS175JDS SN74LS175JS SN74LS175N SN74LS175ND SN74LS175NDS SN74LS175NS T74LS175B1 TCG74LS175 |
26 | SN74LS174J | 3102022 443-879 74LS174 74LS174N 74LS174PC 9LS174DC 9LS174DM 9LS174PC AMX3565 C74LS174P DM74LS174N DN74LS174P EAQ00-13100 ECG74LS174 HD74LS174 HD74LS174P HE-443-879 HEPC74LS174P I61DLS1740 LS174 M74LS174P MB74LS174 MB74LS174M N74LS174B N74LS174F N74LS174N NTE74LS174 ON74LS174N SK74LS174 SN74LS174 SN74LS174J SN74LS174JD SN74LS174JDS SM74LS174JS SN74LS174N SN74LS174ND SN74LS174NDS SN74LS174NS T74LS174B1 TCG74LS174 BLOCK-1616 13-117-6 3102023 443-752 74LS175 74LS175DC 74LS175N 74LS175PC 901521-34 9LS175DC 9LS175PC AMX3566 C74LS175P DM74LS175N ECG74LS175 GD74LS175 HD74LS175 HD74LS175P HE-443-752 HEPC74LS175P M74LS175P MB74LS175 MB74LS175M N74LS175B N74LS175F N74LS175N NTE74LS175 ON74LS175N SK74LS175 SN74LS175 SN74LS175J SN74LS175JD SN74LS175JDS SN74LS175JS SN74LS175N SN74LS175ND SN74LS175NDS SN74LS175NS T74LS175B1 TCG74LS175 |
27 | SN74LS181 | 74LS181PC C74LS181P ECG74LS181 HD74LS181 HD74LS181P HEPC74LS181P MB74LS181 MB74LS181M N74LS181F N74LS181N NTE74LS181 SN74LS181 SN74LS181J SN74LS181JD SN74LS181JDS SN74LS181JS SN74LS181N SN74LS181ND SN74LS181NDS SN74LS181NS |
28 | SN74LS174JD | 3102022 443-879 74LS174 74LS174N 74LS174PC 9LS174DC 9LS174DM 9LS174PC AMX3565 C74LS174P DM74LS174N DN74LS174P EAQ00-13100 ECG74LS174 HD74LS174 HD74LS174P HE-443-879 HEPC74LS174P I61DLS1740 LS174 M74LS174P MB74LS174 MB74LS174M N74LS174B N74LS174F N74LS174N NTE74LS174 ON74LS174N SK74LS174 SN74LS174 SN74LS174J SN74LS174JD SN74LS174JDS SM74LS174JS SN74LS174N SN74LS174ND SN74LS174NDS SN74LS174NS T74LS174B1 TCG74LS174 BLOCK-1616 13-117-6 3102023 443-752 74LS175 74LS175DC 74LS175N 74LS175PC 901521-34 9LS175DC 9LS175PC AMX3566 C74LS175P DM74LS175N ECG74LS175 GD74LS175 HD74LS175 HD74LS175P HE-443-752 HEPC74LS175P M74LS175P MB74LS175 MB74LS175M N74LS175B N74LS175F N74LS175N NTE74LS175 ON74LS175N SK74LS175 SN74LS175 SN74LS175J SN74LS175JD SN74LS175JDS SN74LS175JS SN74LS175N SN74LS175ND SN74LS175NDS SN74LS175NS T74LS175B1 TCG74LS175 |
29 | SN74LS174JDS | 3102022 443-879 74LS174 74LS174N 74LS174PC 9LS174DC 9LS174DM 9LS174PC AMX3565 C74LS174P DM74LS174N DN74LS174P EAQ00-13100 ECG74LS174 HD74LS174 HD74LS174P HE-443-879 HEPC74LS174P I61DLS1740 LS174 M74LS174P MB74LS174 MB74LS174M N74LS174B N74LS174F N74LS174N NTE74LS174 ON74LS174N SK74LS174 SN74LS174 SN74LS174J SN74LS174JD SN74LS174JDS SM74LS174JS SN74LS174N SN74LS174ND SN74LS174NDS SN74LS174NS T74LS174B1 TCG74LS174 BLOCK-1616 13-117-6 3102023 443-752 74LS175 74LS175DC 74LS175N 74LS175PC 901521-34 9LS175DC 9LS175PC AMX3566 C74LS175P DM74LS175N ECG74LS175 GD74LS175 HD74LS175 HD74LS175P HE-443-752 HEPC74LS175P M74LS175P MB74LS175 MB74LS175M N74LS175B N74LS175F N74LS175N NTE74LS175 ON74LS175N SK74LS175 SN74LS175 SN74LS175J SN74LS175JD SN74LS175JDS SN74LS175JS SN74LS175N SN74LS175ND SN74LS175NDS SN74LS175NS T74LS175B1 TCG74LS175 |
30 | SN74LS174JS | 3102022 443-879 74LS174 74LS174N 74LS174PC 9LS174DC 9LS174DM 9LS174PC AMX3565 C74LS174P DM74LS174N DN74LS174P EAQ00-13100 ECG74LS174 HD74LS174 HD74LS174P HE-443-879 HEPC74LS174P I61DLS1740 LS174 M74LS174P MB74LS174 MB74LS174M N74LS174B N74LS174F N74LS174N NTE74LS174 ON74LS174N SK74LS174 SN74LS174 SN74LS174J SN74LS174JD SN74LS174JDS SM74LS174JS SN74LS174N SN74LS174ND SN74LS174NDS SN74LS174NS T74LS174B1 TCG74LS174 BLOCK-1616 13-117-6 3102023 443-752 74LS175 74LS175DC 74LS175N 74LS175PC 901521-34 9LS175DC 9LS175PC AMX3566 C74LS175P DM74LS175N ECG74LS175 GD74LS175 HD74LS175 HD74LS175P HE-443-752 HEPC74LS175P M74LS175P MB74LS175 MB74LS175M N74LS175B N74LS175F N74LS175N NTE74LS175 ON74LS175N SK74LS175 SN74LS175 SN74LS175J SN74LS175JD SN74LS175JDS SN74LS175JS SN74LS175N SN74LS175ND SN74LS175NDS SN74LS175NS T74LS175B1 TCG74LS175 |
31 | SN74LS181ND | 74LS181PC C74LS181P ECG74LS181 HD74LS181 HD74LS181P HEPC74LS181P MB74LS181 MB74LS181M N74LS181F N74LS181N NTE74LS181 SN74LS181 SN74LS181J SN74LS181JD SN74LS181JDS SN74LS181JS SN74LS181N SN74LS181ND SN74LS181NDS SN74LS181NS |
32 | SN74LS181NDS | 74LS181PC C74LS181P ECG74LS181 HD74LS181 HD74LS181P HEPC74LS181P MB74LS181 MB74LS181M N74LS181F N74LS181N NTE74LS181 SN74LS181 SN74LS181J SN74LS181JD SN74LS181JDS SN74LS181JS SN74LS181N SN74LS181ND SN74LS181NDS SN74LS181NS |
33 | SN74LS174N | 3102022 443-879 74LS174 74LS174N 74LS174PC 9LS174DC 9LS174DM 9LS174PC AMX3565 C74LS174P DM74LS174N DN74LS174P EAQ00-13100 ECG74LS174 HD74LS174 HD74LS174P HE-443-879 HEPC74LS174P I61DLS1740 LS174 M74LS174P MB74LS174 MB74LS174M N74LS174B N74LS174F N74LS174N NTE74LS174 ON74LS174N SK74LS174 SN74LS174 SN74LS174J SN74LS174JD SN74LS174JDS SM74LS174JS SN74LS174N SN74LS174ND SN74LS174NDS SN74LS174NS T74LS174B1 TCG74LS174 BLOCK-1616 13-117-6 3102023 443-752 74LS175 74LS175DC 74LS175N 74LS175PC 901521-34 9LS175DC 9LS175PC AMX3566 C74LS175P DM74LS175N ECG74LS175 GD74LS175 HD74LS175 HD74LS175P HE-443-752 HEPC74LS175P M74LS175P MB74LS175 MB74LS175M N74LS175B N74LS175F N74LS175N NTE74LS175 ON74LS175N SK74LS175 SN74LS175 SN74LS175J SN74LS175JD SN74LS175JDS SN74LS175JS SN74LS175N SN74LS175ND SN74LS175NDS SN74LS175NS T74LS175B1 TCG74LS175 |
34 | SN74LS181J | 74LS181PC C74LS181P ECG74LS181 HD74LS181 HD74LS181P HEPC74LS181P MB74LS181 MB74LS181M N74LS181F N74LS181N NTE74LS181 SN74LS181 SN74LS181J SN74LS181JD SN74LS181JDS SN74LS181JS SN74LS181N SN74LS181ND SN74LS181NDS SN74LS181NS |
35 | SN74LS181JD | 74LS181PC C74LS181P ECG74LS181 HD74LS181 HD74LS181P HEPC74LS181P MB74LS181 MB74LS181M N74LS181F N74LS181N NTE74LS181 SN74LS181 SN74LS181J SN74LS181JD SN74LS181JDS SN74LS181JS SN74LS181N SN74LS181ND SN74LS181NDS SN74LS181NS |
36 | SN74LS174ND | 3102022 443-879 74LS174 74LS174N 74LS174PC 9LS174DC 9LS174DM 9LS174PC AMX3565 C74LS174P DM74LS174N DN74LS174P EAQ00-13100 ECG74LS174 HD74LS174 HD74LS174P HE-443-879 HEPC74LS174P I61DLS1740 LS174 M74LS174P MB74LS174 MB74LS174M N74LS174B N74LS174F N74LS174N NTE74LS174 ON74LS174N SK74LS174 SN74LS174 SN74LS174J SN74LS174JD SN74LS174JDS SM74LS174JS SN74LS174N SN74LS174ND SN74LS174NDS SN74LS174NS T74LS174B1 TCG74LS174 BLOCK-1616 13-117-6 3102023 443-752 74LS175 74LS175DC 74LS175N 74LS175PC 901521-34 9LS175DC 9LS175PC AMX3566 C74LS175P DM74LS175N ECG74LS175 GD74LS175 HD74LS175 HD74LS175P HE-443-752 HEPC74LS175P M74LS175P MB74LS175 MB74LS175M N74LS175B N74LS175F N74LS175N NTE74LS175 ON74LS175N SK74LS175 SN74LS175 SN74LS175J SN74LS175JD SN74LS175JDS SN74LS175JS SN74LS175N SN74LS175ND SN74LS175NDS SN74LS175NS T74LS175B1 TCG74LS175 |
37 | SN74LS181JDS | 74LS181PC C74LS181P ECG74LS181 HD74LS181 HD74LS181P HEPC74LS181P MB74LS181 MB74LS181M N74LS181F N74LS181N NTE74LS181 SN74LS181 SN74LS181J SN74LS181JD SN74LS181JDS SN74LS181JS SN74LS181N SN74LS181ND SN74LS181NDS SN74LS181NS |
38 | SN74LS181JS | 74LS181PC C74LS181P ECG74LS181 HD74LS181 HD74LS181P HEPC74LS181P MB74LS181 MB74LS181M N74LS181F N74LS181N NTE74LS181 SN74LS181 SN74LS181J SN74LS181JD SN74LS181JDS SN74LS181JS SN74LS181N SN74LS181ND SN74LS181NDS SN74LS181NS |
39 | SN74LS181N | 74LS181PC C74LS181P ECG74LS181 HD74LS181 HD74LS181P HEPC74LS181P MB74LS181 MB74LS181M N74LS181F N74LS181N NTE74LS181 SN74LS181 SN74LS181J SN74LS181JD SN74LS181JDS SN74LS181JS SN74LS181N SN74LS181ND SN74LS181NDS SN74LS181NS |
40 | SN74LS174NDS | 3102022 443-879 74LS174 74LS174N 74LS174PC 9LS174DC 9LS174DM 9LS174PC AMX3565 C74LS174P DM74LS174N DN74LS174P EAQ00-13100 ECG74LS174 HD74LS174 HD74LS174P HE-443-879 HEPC74LS174P I61DLS1740 LS174 M74LS174P MB74LS174 MB74LS174M N74LS174B N74LS174F N74LS174N NTE74LS174 ON74LS174N SK74LS174 SN74LS174 SN74LS174J SN74LS174JD SN74LS174JDS SM74LS174JS SN74LS174N SN74LS174ND SN74LS174NDS SN74LS174NS T74LS174B1 TCG74LS174 BLOCK-1616 13-117-6 3102023 443-752 74LS175 74LS175DC 74LS175N 74LS175PC 901521-34 9LS175DC 9LS175PC AMX3566 C74LS175P DM74LS175N ECG74LS175 GD74LS175 HD74LS175 HD74LS175P HE-443-752 HEPC74LS175P M74LS175P MB74LS175 MB74LS175M N74LS175B N74LS175F N74LS175N NTE74LS175 ON74LS175N SK74LS175 SN74LS175 SN74LS175J SN74LS175JD SN74LS175JDS SN74LS175JS SN74LS175N SN74LS175ND SN74LS175NDS SN74LS175NS T74LS175B1 TCG74LS175 |