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SN74HC273PWRG4 데이터시트(PDF) 7 Page - Texas Instruments |
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SN74HC273PWRG4 데이터시트(HTML) 7 Page - Texas Instruments |
7 / 32 page 7 SN54HC273, SN74HC273 www.ti.com SCLS136E – DECEMBER 1982 – REVISED JULY 2016 Product Folder Links: SN54HC273 SN74HC273 Submit Documentation Feedback Copyright © 1982–2016, Texas Instruments Incorporated 6.9 Timing Requirements – SN54HC273 over recommended operating free-air temperature range (unless otherwise noted) MIN MAX UNIT fclock Clock frequency VCC = 2 V 4 MHz VCC = 4.5 V 18 VCC = 6 V 21 tw Pulse duration CLR low VCC = 2 V 120 ns VCC = 4.5 V 24 VCC = 6 V 20 CLK high or low VCC = 2 V 120 VCC = 4.5 V 24 VCC = 6 V 20 tsu Setup time before CLK ↑ Data VCC = 2 V 150 ns VCC = 4.5 V 30 VCC = 6 V 25 CLR inactive VCC = 2 V 150 VCC = 4.5 V 30 VCC = 6 V 25 th Hold time, data after CLK ↑ VCC = 2 V 0 ns VCC = 4.5 V 0 VCC = 6 V 0 6.10 Timing Requirements – SN74HC273 over recommended operating free-air temperature range (unless otherwise noted) MIN MAX UNIT fclock Clock frequency VCC = 2 V 4 MHz VCC = 4.5 V 21 VCC = 6 V 25 tw Pulse duration CLR low VCC = 2 V 100 ns VCC = 4.5 V 20 VCC = 6 V 17 CLK high or low VCC = 2 V 100 VCC = 4.5 V 20 VCC = 6 V 17 tsu Setup time before CLK ↑ Data VCC = 2 V 125 ns VCC = 4.5 V 25 VCC = 6 V 21 CLR inactive VCC = 2 V 125 VCC = 4.5 V 25 VCC = 6 V 21 th Hold time, data after CLK ↑ VCC = 2 V 0 ns VCC = 4.5 V 0 VCC = 6 V 0 |
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