Counter Single 4Bit Async Decade UP/Down 16Pin TSSOP T/R
Counter IC Counter, Decade 1 Element 4 Bit Positive Edge 16-TSSOP
得捷: IC UP/DOWN COUNTR PRESET 16TSSOP
贸泽: Counter ICs CMOS Presettable BCD Up/Down Counter
TI 德州仪器