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CD74HC194PWT 数据表(PDF) 2 Page - Vectron International, Inc |
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CD74HC194PWT 数据表(HTML) 2 Page - Vectron International, Inc |
2 / 17 page 2 Functional Diagram TRUTH TABLE OPERATING MODE INPUTS OUTPUT CP MR S1 S0 DSR DSL Dn Q0 Q1 Q2 Q3 Reset (Clear) X L X X X X X LLLL Hold (Do Nothing) X H l l X X X q0 q1 q2 q3 Shift Left ↑ H h l XlX q1 q2 q3 L ↑ Hh l X h X q1 q2 q3 H Shift Right ↑ Hl h l X X L q0 q1 q2 ↑ Hl h h X X H q0 q1 q2 Parallel Load ↑ Hh h X X dn d0 d1 d2 d3 H = High Voltage Level, h = High Voltage Level One Set-up Time Prior To The Low to High Clock Transition, L = Low Voltage Level, l = Low Voltage Level One Set-up Time Prior to the Low to High Clock Transition, dn (qn) = Lower Case Letters Indicate the State of the Referenced Input (or output) One Set-up Time Prior to the Low To High Clock Transition, X = Don’t Care, ↑ = Transition from Low to High Level 14 12 13 15 Q0 Q1 Q2 Q3 7 6 3 4 5 D0 D1 D2 D3 GND = 8 VCC = 16 2 9 10 1 11 DSL DSR S0 S1 MR CP CD54HC194, CD74HC194, CD74HCT194 |
类似零件编号 - CD74HC194PWT |
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类似说明 - CD74HC194PWT |
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