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SN74LS240DW Datasheet(PDF) 8 Page - Texas Instruments |
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SN74LS240DW Datasheet(HTML) 8 Page - Texas Instruments |
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8 / 31 page  SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244 SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SDLS144C − APRIL 1985 − REVISED MAY 2010 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions SN54S’ SN74S’ UNIT MIN NOM MAX MIN NOM MAX UNIT VCC Supply voltage (see Note 1) 4.5 5 5.5 4.75 5 5.25 V VIH High-level input voltage 2 2 V VIL Low-level input voltage 0.8 0.8 V IOH High-level output current −12 −15 mA IOL Low-level output current 48 64 mA External resistance between any input and VCC or ground 40 40 k Ω TA Operating free-air temperature (see Note 3) −55 125 0 70 °C NOTES: 1. Voltage values are with respect to network ground terminal. 3. An SN54S241J operating at free-air temperature above 116 °C requires a heat sink that provides a thermal resistance from case to free air, RθCA, of not more that 40°C/W. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS† SN54S’ SN74S’ UNIT PARAMETER TEST CONDITIONS† MIN TYP‡ MAX MIN TYP‡ MAX UNIT VIK VCC = MIN, II = −18 mA −1.2 −1.2 V Hysteresis (VT+ − VT−) VCC = MIN 0.2 0.4 0.2 0.4 V VCC = MIN IOH = −1 mA VIH = 2 V, VIL = 0.8 V, 2.7 VOH VCC = MIN, IOH = −3 mA VIH = 2 V, VIL = 0.8 V, 2.4 3.4 2.4 3.4 V VCC = MIN, IOH = MAX VIH = 2 V, VIL = 0.5 V, 2 2 VOL VCC = MIN, IOL = MAX VIH = 2 V, VIL = 0.8 V, 0.55 0.55 V IOZH VCC = MAX, VIL = 0.8 V VIH = 2 V, VO = 2.4 V 50 50 µA IOZL VCC = MAX, VIL = 0.8 V VIH = 2 V, VO = 0.5 V −50 −50 µA II VCC = MAX, VI = 5.5 V 1 1 mA IIH VCC = MAX, VI = 2.7 V 50 50 µA I V MAX V 05V Any A −400 −400 µA IIL VCC = MAX, VI = 0.5 V Any G −2 −2 mA IOS§ VCC = MAX −50 −225 −50 −225 mA Outputs high ’S240 80 123 80 135 Outputs high ’S241,’S244 95 147 95 160 I VCC = MAX, Outputs low ’S240 100 145 100 150 mA ICC VCC = MAX, Output open Outputs low ’S241, ’S244 120 170 120 180 mA Outputs disabled ’S240 100 145 100 150 Outputs disabled ’S241, ’S244 120 170 120 180 † 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 duration of the short-circuit should not exceed one second. |
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