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SN74AHC594DB Folha de dados(PDF) 7 Page - Texas Instruments |
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SN74AHC594DB Folha de dados(HTML) 7 Page - Texas Instruments |
7 / 17 page SN54AHC594, SN74AHC594 8BIT SHIFT REGISTERS WITH OUTPUT REGISTERS SCLS423F − JUNE 1998 − REVISED SEPTEMBER 2003 7 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 timing requirements over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1) TA = 25°C SN54AHC594 SN74AHC594 UNIT MIN MAX MIN MAX MIN MAX UNIT tw Pulse duration RCLK or SRCLK high or low 5 5 5 ns tw Pulse duration RCLR or SRCLR low 5.2 5.2 5.2 ns SER before SRCLK ↑ 3 3 3 SRCLK ↑ before RCLK↑† 5 5 5 tsu Setup time SRCLR low before RCLK ↑ 5 5 5 ns tsu Setup time SRCLR high (inactive) before SRCLK ↑ 2.9 3.3 3.3 ns RCLR high (inactive) before RCLK ↑ 3.2 3.7 3.7 th Hold time SER after SRCLK ↑ 2 2 2 ns † This setup 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. switching characteristics over recommended operating free-air temperature range, VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1) PARAMETER FROM TO LOAD TA = 25°C SN54AHC594 SN74AHC594 UNIT PARAMETER FROM (INPUT) TO (OUTPUT) LOAD CAPACITANCE MIN TYP MAX MIN MAX MIN MAX UNIT fmax CL = 15 pF 80* 120* 70* 70 MHz fmax CL = 50 pF 55 105 50 50 MHz tPLH RCLK QA−QH CL = 15 pF 4.6* 8* 1* 8.5* 1 8.5 ns tPHL RCLK QA−QH CL = 15 pF 4.9* 8.2* 1* 8.8* 1 8.8 ns tPLH SRCLK QH CL = 15 pF 5.4* 9.1* 1* 9.7* 1 9.7 ns tPHL SRCLK QH′ CL = 15 pF 5.5* 9.2* 1* 9.9* 1 9.9 ns tPHL RCLR QA−QH CL = 15 pF 6* 9.8* 1* 10.6* 1 10.6 ns tPHL SRCLR QH′ CL = 15 pF 5.6* 9.2* 1* 10* 1 10 ns tPLH RCLK QA−QH CL = 50 pF 6.9 10.5 1 11.1 1 11.1 ns tPHL RCLK QA−QH CL = 50 pF 8.1 11.9 1 13.1 1 13.1 ns tPLH SRCLK QH CL = 50 pF 7.7 11.7 1 12.4 1 12.4 ns tPHL SRCLK QH′ CL = 50 pF 8.4 12.5 1 13.9 1 13.9 ns tPHL RCLR QA−QH CL = 50 pF 9.1 13.1 1 14.4 1 14.4 ns tPHL SRCLR QH′ CL = 50 pF 8.5 12.4 1 14 1 14 ns * On products compliant to MIL-PRF-38535, this parameter is not production tested. 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. |
Nº de peça semelhante - SN74AHC594DB |
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Descrição semelhante - SN74AHC594DB |
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