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SN74F257NE4 датащи(PDF) 3 Page - Texas Instruments |
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SN74F257NE4 датащи(HTML) 3 Page - Texas Instruments |
3 / 5 page SN54F257, SN74F257 QUADRUPLE 2LINE TO 1LINE DATA SELECTORS/MULTIPLEXERS WITH 3STATE OUTPUTS SDFS065A − D2932, MARCH 1987 − REVISED OCTOBER 1993 2−3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 recommended operating conditions SN54F257 SN74F257 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 IIK Input clamp current −18 −18 mA IOH High-level output current −3 −3 mA IOL Low-level output current 20 24 mA TA Operating free-air temperature −55 125 0 70 °C electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN54F257 SN74F257 UNIT PARAMETER TEST CONDITIONS MIN TYP† MAX MIN TYP† MAX UNIT VIK VCC = 4.5 V, II = − 18 mA − 1.2 − 1.2 V VCC = 4.5 V IOH = − 1 mA 2.5 3.4 2.5 3.4 VOH VCC = 4.5 V IOH = − 3 mA 2.4 3.3 2.4 3.3 V VCC = 4.75 V, IOH = − 1 mA to − 3 mA 2.7 VOL VCC = 4.5 V IOL = 20 mA 0.3 0.5 V VOL VCC = 4.5 V IOL = 24 mA 0.35 0.5 V IOZH VCC = 5.5 V, VO = 2.7 V 50 50 µA IOZL VCC = 5.5 V, VO = 0.5 V −50 −50 µA II VCC = 5.5 V, VI = 7 V 0.1 0.1 mA IIH VCC = 5.5 V, VI = 2.7 V 20 20 µA IIL VCC = 5.5 V, VI = 0.5 V − 0.6 − 0.6 mA IOS‡ VCC = 5.5 V, VO = 0 −60 −150 −60 −150 mA ICCH VCC = 5.5 V, Condition A 9 15 9 15 ICCL VCC = 5.5 V, See Note 2 Condition B 14.5 22 14.5 22 mA ICCZ See Note 2 Condition C 15 23 15 23 mA † 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. NOTE 2: ICC is measured with the outputs open under the following conditions: A. A/B and all B inputs at 4.5 V, other inputs grounded B. All B inputs at 4.5 V, other inputs grounded C. OE and all B data inputs at 4.5 V, other inputs grounded |
Аналогичный номер детали - SN74F257NE4 |
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Аналогичное описание - SN74F257NE4 |
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