20PCS SN74LS157N SN74LS173AN SN74LS189AN SN74LS192N SN74LS194AN SN74LS244N SN74LS245N SN74LS247N SN74LS266N SN74LS27N DIP
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20PCS SN74LS157N SN74LS173AN SN74LS189AN SN74LS192N SN74LS194AN SN74LS244N SN74LS245N SN74LS247N SN74LS266N SN74LS27N DIP