전자부품 데이터시트 검색엔진 |
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SN74LS244NE4 데이터시트(PDF) 7 Page - Texas Instruments |
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SN74LS244NE4 데이터시트(HTML) 7 Page - Texas Instruments |
7 / 24 page SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244 SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SDLS144B – APRIL 1985 – REVISED FEBRUARY 2002 7 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS† SN54LS’ SN74LS’ UNIT PARAMETER TEST CONDITIONS† MIN TYP‡ MAX MIN TYP‡ MAX UNIT VIK VCC = MIN, II = –18 mA –1.5 –1.5 V Hysteresis (VT+ – VT–) VCC = MIN 0.2 0.4 0.2 0.4 V VOH VCC = MIN, IOH = –3 mA VIH = 2 V, VIL = MAX, 2.4 3.4 2.4 3.4 V VOH VCC = MIN, IOH = MAX VIH = 2 V, VIL = 0.5 V, 2 2 V VOL VCC = MIN, VIH = 2 V, IOL = 12 mA 0.4 0.4 V VOL CC , VIL = MAX IH , IOL = 24 mA 0.5 V IOZH VCC = MAX, VIL = MAX VIH = 2 V, VO = 2.7 V 20 20 µA IOZL VCC = MAX, VIL = MAX VIH = 2 V, VO = 0.4 V –20 –20 µA II VCC = MAX, VI = 7 V 0.1 0.1 mA IIH VCC = MAX, VI = 2.7 V 20 20 µA IIL VCC = MAX, VIL = 0.4 V –0.2 –0.2 mA IOS§ VCC = MAX, –40 –225 –40 –225 mA Outputs high All 17 27 17 27 V MAX Outputs low ’LS240 26 44 26 44 ICC VCC = MAX, Output open Outputs low ’LS241, ’LS244 27 46 27 46 mA Out ut oen Outputs disabled ’LS240 29 50 29 50 Out uts disabled ’LS241, ’LS244 32 54 32 54 † 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. switching characteristics, VCC = 5 V, TA = 25°C (see Figure 1) PARAMETER TEST CONDITIONS ’LS240 ’LS241, ’LS244 UNIT PARAMETER TEST CONDITIONS MIN TYP MAX MIN TYP MAX UNIT tPLH RL = 667 Ω C45 pF 9 14 12 18 ns tPHL RL = 667 Ω, CL = 45 pF 12 18 12 18 ns tPZL RL = 667 Ω C45 F 20 30 20 30 ns tPZH RL = 667 Ω, CL = 45 pF 15 23 15 23 ns tPLZ RL 667 Ω CL 5 pF 10 20 10 20 ns tPHZ RL = 667 Ω, CL = 5 pF 15 25 15 25 ns |
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