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SN74AS194 Datasheet(PDF) 5 Page - Texas Instruments |
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SN74AS194 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 8 page SN54AS194, SN74AS194 4-BIT BIDIRECTIONAL UNIVERSAL SHIFT REGISTERS SDAS212A – DECEMBER 1983 – REVISED DECEMBER 1994 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions SN54AS194 SN74AS194 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 –2 –2 mA IOL Low-level output current 20 20 mA fclock* Clock frequency 0 75 0 80 MHz CLR 4 4.5 tw* Pulse duration CLK high 4 4 ns CLK low 6 7 Select 9 9.5 tsu* Setup time before CLK ↑ Data 3.5 4 ns Clear inactive state 6 6 th* Hold time, data after CLK ↑ 0.5 0.5 ns TA Operating free-air temperature –55 125 0 70 °C * On products compliant to MIL-STD-883, Class B, these parameters are based on characterization data, but are not production tested. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN54AS194 SN74AS194 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 VCC –2 V VOL VCC = 4.5 V, IOL = 20 mA 0.35 0.5 0.35 0.5 V II Data, CLK, CLR VCC =5 5V VI =7V 0.1 0.1 mA II Mode, SL, SR VCC = 5.5 V, VI = 7 V 0.2 0.2 mA IIH Data, CLK, CLR VCC =5 5V VI =2 7V 20 20 µA IIH Mode, SL, SR VCC = 5.5 V, VI = 2.7 V 40 40 µA IIL Data, CLK, CLR VCC =5 5V VI =0 4V – 0.5 – 0.5 mA IIL Mode, SL, SR VCC = 5.5 V, VI = 0.4 V –1 –1 mA IO‡ VCC = 5.5 V, VO = 2.25 V –30 –112 –30 –112 mA ICC VCC =5 5V Outputs high 30 49 30 43 mA ICC VCC = 5.5 V Outputs low 38 60 38 53 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. |
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