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SN74LS221D 数据表(PDF) 10 Page - Texas Instruments |
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SN74LS221D 数据表(HTML) 10 Page - Texas Instruments |
10 / 26 page SN54221, SN54LS221, SN74221, SN74LS221 DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT TRIGGER INPUTS SDLS213B − DECEMBER 1983 − REVISED NOVEMBER 2004 10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PARAMETER MEASUREMENT INFORMATION B† CLR Q Q 3 V 3 V 0 V 0 V VOH VOH VOL VOL tw ≥ 60 ns tPLH tPHL tPHL tPLH CONDITION 1: TRIGGER FROM B, THEN CLR B† CLR Q 3 V 3 V 0 V 0 V VOH VOL ≥ 60 ns CONDITION 2: TRIGGER FROM B, THEN CLR B† CLR Q 3 V 3 V 0 V 0 V VOH VOL ≥ 50 ns CONDITION 3: CLR OVERRIDING B, THEN TRIGGER FROM B tsu ≥ 0 tw Triggered Not Triggered † A is low. Figure 1. Switching Characteristics |
类似零件编号 - SN74LS221D |
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类似说明 - SN74LS221D |
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