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SNJ54LS221W Datasheet(PDF) 8 Page - Texas Instruments |
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SNJ54LS221W Datasheet(HTML) 8 Page - Texas Instruments |
8 / 25 page SN54221, SN54LS221, SN74221, SN74LS221 DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT TRIGGER INPUTS SDLS213B − DECEMBER 1983 − REVISED NOVEMBER 2004 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS† SN54LS221 SN74LS221 UNIT PARAMETER TEST CONDITIONS† MIN TYP‡ MAX MIN TYP‡ MAX UNIT VT+ Positive-going threshold voltage, B input VCC = MIN 1 2* 1 2 V VT− Negative-going threshold voltage, B input VCC = MIN 0.7* 0.9 0.8 0.9 V VIK VCC = MIN, II = −18 mA −1.5 −1.5 V VOH VCC = MIN, IOH = −400 µA 2.5 3.4 2.7 3.4 V VOL VCC = MIN IOL = 4 mA 0.25 0.4 0.25 0.4 V VOL VCC = MIN IOL = 8 mA 0.35 0.5 V II VCC = MAX, VI = 7 V 0.1 0.1 mA IIH VCC = MAX, VI = 2.7 V 20 20 µA IIL A input VCC = MAX, VI = 0.4 V −0.4 −0.4 mA IIL CLR, B input VCC = MAX, VI = 0.4 V −0.8 −0.8 mA IOS§ VCC = MAX −20 −100 −20 −100 mA ICC Quiescent VCC = MAX 4.7 11 4.7 11 mA ICC Triggered VCC = MAX 19 27* 19 27 mA ∗ On products compliant to MIL-PRF-38535, this parameter is not production tested. † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. ‡ All typical values are at VCC = 5 V, TA = 25°C. § Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second. timing requirements over recommended ranges of supply voltage and operating free-air temperature SN54LS221 SN74LS221 UNIT MIN MAX MIN MAX UNIT tw Pulse duration A or B 50 50 ns tw Pulse duration CLR 40 40 ns tsu Setup time, inactive state¶ CLR 15 15 ns Rext External timing resistance 1.4* 70* 1.4 100 k Ω Cext External timing capacitance 0* 1000* 0 1000 µF Output duty cycle RT = 2 kΩ 50% 50% Output duty cycle RT = MAX Rext 90% 90% ∗ On products compliant to MIL-PRF-38535, this parameter is not production tested. ¶ Inactive-state setup time also is referred to as recovery time. |
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