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SN74HC594DE4 数据表(PDF) 6 Page - Texas Instruments |
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SN74HC594DE4 数据表(HTML) 6 Page - Texas Instruments |
6 / 18 page SN54HC594, SN74HC594 8BIT SHIFT REGISTERS WITH OUTPUT REGISTERS SCLS040F − DECEMBER 1982 − REVISED OCTOBER 2003 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 timing requirements over recommended operating free-air temperature range (unless otherwise noted) VCC TA = 25°C SN54HC594 SN74HC594 UNIT VCC MIN MAX MIN MAX MIN MAX UNIT 2 V 5 3.3 4 fclock Clock frequency 4.5 V 25 17 20 MHz fclock Clock frequency 6 V 29 20 24 MHz 2 V 100 150 125 SRCLK or RCLK high or low 4.5 V 20 30 25 tw Pulse duration SRCLK or RCLK high or low 6 V 17 25 21 ns tw Pulse duration 2 V 100 150 125 ns SRCLR or RCLR low 4.5 V 20 30 25 SRCLR or RCLR low 6 V 17 25 21 2 V 90 135 110 SER before SRCLK ↑ 4.5 V 18 27 22 SER before SRCLK ↑ 6 V 15 23 19 2 V 90 135 110 SRCLK ↑ before RCLK↑† 4.5 V 18 27 22 SRCLK ↑ before RCLK↑† 6 V 15 23 19 2 V 50 75 63 tsu Setup time SRCLR low before RCLK ↑ 4.5 V 10 15 13 ns tsu Setup time SRCLR low before RCLK ↑ 6 V 9 13 11 ns 2 V 20 20 20 SRCLR high (inactive) before SRCLK ↑ 4.5 V 10 10 10 SRCLR high (inactive) before SRCLK ↑ 6 V 10 10 10 2 V 5 5 5 RCLR high (inactive) before SRCLK ↑ 4.5 V 5 5 5 RCLR high (inactive) before SRCLK ↑ 6 V 5 5 5 2 V 5 5 5 th Hold time, SER after SRCLK ↑ 4.5 V 5 5 5 ns th Hold time, SER after SRCLK 6 V 5 5 5 ns † This setup time ensures that the output register receives stable data from the shift-register outputs. The clocks may be tied together, in which case the output register is one clock pulse behind the shift register. PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. |
类似零件编号 - SN74HC594DE4 |
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类似说明 - SN74HC594DE4 |
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