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SN74ALS819 Datasheet(PDF) 8 Page - Texas Instruments |
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SN74ALS819 Datasheet(HTML) 8 Page - Texas Instruments |
8 / 13 page SN74ALS819, SN74ALS29818 8BIT DIAGNOSTICS/PIPELINE REGISTERS SDAS105A − JANUARY 1986 − REVISED OCTOBER 1986 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001 8 absolute maximum ratings over operating free-air temperature range Supply voltage, VCC 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage, any input or I/O port 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating free-air temperature range 0 °C to 70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range −65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . recommended operating conditions MIN NOM MAX UNIT VCC Supply voltage 4.75 5 5.25 V VIH High-level input voltage 2 V VIL Low-level input voltage 0.8 V IOH High-level output current Y0 − Y7, PE −3 mA IOH High-level output current All others −1 mA IOL Low-level output current Y0 − Y7, PE 24 mA IOL Low-level output current All others 8 mA tw Pulse duration SRCLK high or low 25 ns tw Pulse duration ORCLK high or low 15 ns Y0 − Y7 (’ALS29818)† 5 tsu Setup time before SRCLK ↑ MODE 12 ns tsu Setup time before SRCLK ↑ SDI 10 ns ORCLK (’ALS29818)† 40 DQ0 − DQ7 8 tsu Setup time before ORCLK ↑ MODE (’ALS29818)† 15 ns tsu Setup time before ORCLK ↑ SRCLK‡ 5 ns Y0 − Y7 (’ALS29818)† 5 th Hold time after RCLK ↑ MODE 2 ns th Hold time after RCLK ↑ SDI 0 ns DQ0 − DQ7 2 th Hold time after ORCLK ↑ MODE (’ALS29818) † 0 ns th Hold time after ORCLK ↑ SDI (’ALS819) ns TA Operating free-air temperature 0 70 °C † This setup time ensures that the shadow register will see stable data from the output register. ‡ This setup time ensures that the output register will see stable data from the shadow register. |
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