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1 TC74HC221AF TOSHIBA CMOS DIGITAL INTEGRATED CIRCUIT SILICON MONOLITHIC 479K Toshiba 4185349
2 TC74HC221AF Dual Monostable Multivibrator 490K Toshiba 2144189
3 TC74HC221AFN TOSHIBA CMOS DIGITAL INTEGRATED CIRCUIT SILICON MONOLITHIC 479K Toshiba 4185348
4 TC74HC221AFN Dual Monostable Multivibrator 490K Toshiba 2144188