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CD74HC297E 数据表(PDF) 5 Page - Texas Instruments |
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CD74HC297E 数据表(HTML) 5 Page - Texas Instruments |
5 / 15 page 5 Prerequisite For Switching Function PARAMETER SYMBOL VCC (V) 25oC -40oC TO 85oC -55oC TO 125oC UNITS MIN MAX MIN MAX MIN MAX HC TYPES Maximum Clock Frequency KCP fMAX 2 6 -5-4- MHz 4.5 30 - 24 - 20 - MHz 6 35 - 28 - 24 - MHz Maximum Clock Frequency I/DCP fMAX 2 4 -3-2- MHz 4.5 20 - 16 - 13 - MHz 6 24 - 19 - 15 - MHz Clock Pulse Width KCP tw 2 80 - 100 - 120 - ns 4.5 16 - 20 - 24 - ns 6 14-17 -20- ns Clock Pulse Width I/DCP tW 2 125 - 155 - 190 - ns 4.5 25 - 31 - 38 - ns 6 21-26 -32- ns Set-up Time D/U, ENCTR to KCP tSU 2 100 - 125 - 150 - ns 4.5 20 - 25 - 30 - ns 6 17-21 -26- ns Hold Time D/U, ENCTR to KCP tH 2 0 -0-0- ns 4.5 0-0-0- ns 6 0 -0-0- ns HCT TYPES Maximum Clock Frequency KCP fMAX 4.5 30 - 24 - 20 - MHz Maximum Clock Frequency I/DCP fMAX 4.5 20 - 16 - 13 - MHz Clock Pulse Width KCP tw 4.5 16 - 20 - 24 - ns Clock Pulse Width I/DCP tw 4.5 25 - 31 - 38 - ns Set-up Time D/U, ENCTR to KCP tSU 4.5 20 - 25 - 30 - ns Hold Time D/U, ENCTR to KCP tH 4.5 0-0-0- ns Switching Specifications Input tr, tf = 6ns PARAMETER SYMBOL TEST CONDITIONS VCC (V) 25oC -40oC TO 85oC -55oC TO 125oC UNITS TYP MAX MAX MAX HC TYPES Propagation Delay, I/DCP to I/DOUT tPLH, tPHL CL = 50pF 2 - 175 220 265 ns 4.5 - 35 44 53 ns 6 - 30 34 43 ns CD54HC297, CD74HC297, CD74HCT297 CD54HC297, CD74HC297, CD74HCT297 |
类似零件编号 - CD74HC297E |
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类似说明 - CD74HC297E |
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