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SN74AS869 数据表(PDF) 9 Page - Texas Instruments |
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SN74AS869 数据表(HTML) 9 Page - Texas Instruments |
9 / 17 page SN54AS867, SN54AS869 SN74ALS867A, SN74ALS869, SN74AS867, SN74AS869 SYNCHRONOUS 8-BIT UP/DOWN COUNTERS SDAS115C – DECEMBER 1982 – REVISED JANUARY 1995 9 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 switching characteristics (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 Ω, TA = MIN to MAX† UNIT (INPUT) (OUTPUT) SN74ALS867A MIN MAX fmax 35 MHz tPLH CLK RCO 4 14 ns tPHL CLK RCO 4 14 ns tPLH CLK Any Q 3 16 ns tPHL CLK Any Q 3 16 ns tPLH ENT RCO 3 14 ns tPHL ENT RCO 2 9 ns tPHL S0 or S1 (clear mode) Any Q 8 26 ns tPLH S0 or S1 RCO 4 16 ns tPHL (count up/down) RCO 4 16 ns tPLH S0 or S1 (clear mode) RCO 4 16 ns † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. |
类似零件编号 - SN74AS869 |
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类似说明 - SN74AS869 |
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