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SN74AS878 Datasheet(PDF) 6 Page - Texas Instruments |
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SN74AS878 Datasheet(HTML) 6 Page - Texas Instruments |
6 / 8 page SN54AS878, SN54AS879 SN74AS878, SN74AS879 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 6 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: SN54AS878, SN54AS879 −55 °C to 125°C . . . . . . . . . . . . . . . . . . . . . SN74AS878, SN74AS879 0 °C to 70°C . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range −65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . recommended operating conditions SN54AS878 SN54AS879 SN74AS878 SN74AS879 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 0.8 0.8 V IOH High-level output current −12 −15 mA IOL Low-level output current 32 48 mA fclock Clock Frequency 0 100 0 125 MHz tw Pulse duration CLK low 4 2 ns tw Pulse duration CLK high 5 4 ns tsu Setup time before CLK ↑ Data 3 2 ns tsu Setup time before CLK ↑ CLR 6.5 5.5 ns th Hold time after CLK ↑ Data 3 2 ns th Hold time after CLK ↑ CLR 0 0 ns TA Operating free-air temperature −55 125 0 70 ° °C |
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