24LC21A/P 24LC21A/SN 24LC21A-I/P 24LC21A-I/SN 24LC21AT/SN 24LC21AT-I/SN 3KSMC21AH 3KSMC21AH V7G N21C21ASNDT3G S-19100C21A-M5T2U S-19100C21A-N4T2U S-19101C21A-M5T2U S-19101C21A-N4T2U SN74HC21ANS SN74HC21ANS SN74HC21APWR TC74HC21AF(EL,F) TC74HC21AF(EL,F) XC6118C21AGR-G XC6118C21AMR-G XC6119C21A7R-G XC6119C21ANR-G XC6127C21A7R-G XC6127C21AMR-G XC6127C21ANR-G XC6129C21A7R-G XC6129C21A9R-G XC6129C21ANR-G XC6135C21A9R-G XC6135C21AMR-G XC6135C21ANR-G XC6136C21A9R-G