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SN74HC595DBRE4 数据表(PDF) 7 Page - Texas Instruments |
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SN74HC595DBRE4 数据表(HTML) 7 Page - Texas Instruments |
7 / 36 page SN54HC595, SN74HC595 www.ti.com SCLS041I – DECEMBER 1982 – REVISED SEPTEMBER 2015 7.6 Timing Requirements over operating free-air temperature range (unless otherwise noted) TA = 25°C SN54HC595 SN74HC595 VCC UNIT MIN MAX MIN MAX MIN MAX 2 V 6 4.2 5 fclock Clock frequency 4.5 V 31 21 25 MHz 6 V 36 25 29 2 V 80 120 100 SRCLK or RCLK high or low 4.5 V 16 24 20 6 V 14 20 17 tw Pulse duration ns 2 V 80 120 100 SRCLR low 4.5 V 16 24 20 6 V 14 20 17 2 V 100 150 125 SER before SRCLK ↑ 4.5 V 20 30 25 6 V 17 25 21 2 V 75 113 94 SRCLK ↑ before RCLK↑(1) 4.5 V 15 23 19 6 V 13 19 16 tsu Set-up time ns 2 V 50 75 65 SRCLR low before RCLK ↑ 4.5 V 10 15 13 6 V 9 13 11 2 V 50 75 60 SRCLR high (inactive) before SRCLK ↑ 4.5 V 10 15 12 6 V 9 13 11 2 V 0 0 0 th Hold time, SER after SRCLK ↑ 4.5 V 0 0 0 ns 6 V 0 0 0 (1) This set-up time allows the storage register to receive stable data from the shift register. The clocks can be tied together, in which case the shift register is one clock pulse ahead of the storage register. Copyright © 1982–2015, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: SN54HC595 SN74HC595 |
类似零件编号 - SN74HC595DBRE4 |
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类似说明 - SN74HC595DBRE4 |
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