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SN74ALS867A Datasheet(PDF) 15 Page - Texas Instruments |
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SN74ALS867A Datasheet(HTML) 15 Page - Texas Instruments |
15 / 17 page SN54AS867, SN54AS869 SN74ALS867A, SN74ALS869, SN74AS867, SN74AS869 SYNCHRONOUS 8-BIT UP/DOWN COUNTERS SDAS115C – DECEMBER 1982 – REVISED JANUARY 1995 15 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN54AS869 SN74AS869 UNIT PARAMETER TEST CONDITIONS MIN TYP† MAX MIN TYP† MAX UNIT VIK VCC = 4.5 V, II = –18 mA –1.2 –1.2 V VOH VCC = 4.5 V to 5.5 V, IOH = – 2 mA VCC –2 V VOH VCC = 4.5 V, IOH = – 2 mA VCC –2* V VOL RCO VCC = 4.5 V IOL = 20 mA, VIL on ENT = 0.7 V 0.34 0.5 V OL Other outputs CC IOL = 20 mA 0.34 0.5 II VCC = 5.5 V, VI = 7 V 0.1 0.1 mA IIH ENT VCC =5 5V VI =2 7V 40 40 µA IIH Other inputs VCC = 5.5 V, VI = 2.7 V 20 20 µA IIL ENT VCC =5 5V VI =0 4V –4 –4 mA IIL Other inputs VCC = 5.5 V, VI = 0.4 V –2 –2 mA IO‡ VCC = 5.5 V, VO = 2.25 V –30 –112 –30 –112 mA ICC VCC = 5.5 V 134 195 134 195 mA † 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. 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) SN54AS869 SN74AS869 MIN MAX MIN MAX fmax* 40 45 MHz tPLH CLK RCO 6 35 6 35 ns tPHL CLK RCO 6 20 6 18 ns tPLH CLK Any Q 3 12 3 11 ns tPHL CLK Any Q 4 16 4 15 ns tPLH ENT RCO 3 25 3 15 ns tPHL ENT RCO 6 21 6 17 ns tPLH ENP RCO 5 27 5 19 ns tPHL ENP RCO 6 21 6 18 ns * On products compliant to MIL-STD-883, Class B, this parameter is based on characterization data but is not production tested. § For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. |
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