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SN74ALS879ADWR データシート(PDF) 4 Page - Texas Instruments |
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SN74ALS879ADWR データシート(HTML) 4 Page - Texas Instruments |
4 / 8 page SN54ALS878A, SN54ALS879A SN74ALS878A, SN74ALS879A DUAL 4BIT DTYPE EDGETRIGGERED FLIPFLOPS WITH 3STATE OUTPUTS SDAS062A − D2661, APRIL 1982 − REVISED MAY 1986 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001 4 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage, VCC 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltage applied to a disabled 3-state output 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating free-air temperature range: SN54ALS878A, SN54ALS879A −55 °C to 125°C . . . . . . . . . . . . . . . . SN74ALS878A, SN74ALS879A 0 °C to 70°C . . . . . . . . . . . . . . . . . . . Storage temperature range −65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . recommended operating conditions SN54ALS878A SN54ALS879A SN74ALS878A SN74ALS879A UNIT MIN NOM MAX MIN NOM MAX UNIT VCC Supply voltage 4.5 5 5.5 4.5 5 5.5 V VIH High-level input voltage 2 2 V VIL Low-level input voltage 0.7 0.8 V IOH High-level output current −1 − 2.6 mA IOL Low-level output current 12 24 mA fclock Clock frequency ’ALS878A 0 25 0 30 MHz fclock Clock frequency ’ALS879A 0 20 0 25 MHz tw Pulse duration ’ALS878A CLK high or low 20 16.5 ns tw Pulse duration ’ALS879A CLK high or low 25 20 ns tsu Setup time before CLK ↑ Data 15 15 ns tsu Setup time before CLK ↑ CLR 20 20 ns th Hold time after CLK ↑ Data 4 4 ns th Hold time after CLK ↑ CLR 0 0 ns TA Operating free-air temperature −55 125 0 70 ° °C electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) SN54ALS878A SN74ALS878A PARAMETER TEST CONDITIONS SN54ALS879A SN74ALS879A UNIT MIN TYP† MAX MIN TYP† MAX UNIT VIK VCC = 4.5 V, II = − 18 mA − 1.2 − 1.2 V VCC = 4.5 V to 5.5 V, IOH = − 0.4 mA VCC −2 VCC −2 VOH VCC = 4.5 V, IOH = − 1 mA 2.4 3.3 V VCC = 4.5 V, IOH = − 2.6 mA 2.4 3.2 VOL VCC = 4.5 V, IOL = 12 mA 0.25 0.4 0.25 0.4 V VOL VCC = 4.5 V, IOL = 24 mA 0.35 0.5 V IOZH VCC = 5.5 V, VO = 2. 7 V 20 20 µA IOZL VCC = 5.5 V, VO = 0.4 V −20 −20 µA II VCC = 5.5 V, VI = 7 V 0.1 0.1 mA IIH VCC = 5.5 V, VO = 2.7 V 20 20 µA IIL VCC = 5.5 V, VI = 0 .4 V − 0.2 − 0.2 mA IO‡ VCC = 5.5 V, VO = 2.25 V −30 −112 −30 −112 mA Outputs high 14 23 14 23 ICC VCC = 5.5 V Outputs low 18 31 18 31 mA Outputs disabled 20 33 20 33 † All typical values are at VCC = 5 V, TA = 25°C. ‡ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS. |
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同様の説明 - SN74ALS879ADWR |
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