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SN54ALS158 Datasheet(PDF) 6 Page - Tachyonics CO,. LTD |
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SN54ALS158 Datasheet(HTML) 6 Page - Tachyonics CO,. LTD |
6 / 20 page SN54ALS157A, SN54ALS158 SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158 QUAD 1OF2 DATA SELECTORS/MULTIPLEXERS SDAS081C − APRIL 1982 − REVISED DECEMBER 1994 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage, VI 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating free-air temperature range, TA: SN74AS157, SN74AS158 0 °C to 70°C . . . . . . . . . . . . . . . . . . . . . . Storage temperature range −65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. recommended operating conditions SN74AS157 SN74AS158 UNIT MIN NOM MAX UNIT VCC Supply voltage 4.5 5 5.5 V VIH High-level input voltage 2 V VIL Low-level input voltage 0.8 V IOH High-level output current −2 mA IOL Low-level output current 20 mA TA Operating free-air temperature 0 70 °C electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN74AS157 SN74AS158 UNIT PARAMETER TEST CONDITIONS MIN TYP‡ MAX UNIT VIK VCC = 4.5 V, II = − 18 mA − 1.2 V VOH VCC = 4.5 V to 5.5 V, IOH = − 2 mA VCC −2 V VOL VCC = 4.5 V, IOL = 20 mA 0.35 0.5 V II A/B VCC = 5.5 V, VI = 7 V 0.2 mA II A, B, or G VCC = 5.5 V, VI = 7 V 0.1 mA IIH A/B VCC = 5.5 V, VI = 2.7 V 40 A IIH A, B, or G VCC = 5.5 V, VI = 2.7 V 20 µA IIL A/B VCC = 5.5 V, VI = 0.4 V −1 mA IIL A, B, or G VCC = 5.5 V, VI = 0.4 V − 0.5 mA IO§ VCC = 5.5 V, VO = 2.25 V −30 −112 mA ICC SN74AS157 VCC = 5.5 V 17.5 28 mA ICC SN74AS158 VCC = 5.5 V 15.6 22.5 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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