Cheap And Discounts 20PCS INA-50311-TR1G INA-50311 N50 SOT-143 TC74HC112AF 74HC112A SOP New Original Wholesale. Buy Directly From Merchant ShenZhen ChaoFeng Elextronic Co.,Ltd Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.