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SN54BCT240 Datasheet(PDF) 4 Page - Texas Instruments |
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SN54BCT240 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 19 page SN54BCT240, SN74BCT240 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS004F – OCTOBER 1987 – REVISED MARCH 2003 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN54BCT240 SN74BCT240 UNIT PARAMETER TEST CONDITIONS MIN TYP† MAX MIN TYP† MAX UNIT VIK VCC = 4.5 V, II = –18 mA –1.2 –1.2 V IOH = –3 mA 2.4 3.3 2.4 3.3 VOH VCC = 4.5 V IOH = –12 mA 2 3.2 V IOH = –15 mA 2 3.1 VOL VCC =4 5V IOL = 48 mA 0.38 0.55 V VOL VCC = 4.5 V IOL = 64 mA 0.42 0.55 V 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 –1 –1 mA IOZH VCC = 5.5 V, VO = 2.7 V 50 50 µA IOZL VCC = 5.5 V, VO = 0.5 V –50 –50 µA IOS‡ VCC = 5.5 V, VO = 0 –100 –225 –100 –225 mA ICCH VCC = 5.5 V, Outputs open 19 31 19 31 mA ICCL VCC = 5.5 V, Outputs open 46 71 46 71 mA ICCZ VCC = 5.5 V, Outputs open 6 9 6 9 mA Ci VCC = 5 V, VI = 2.5 V or 0.5 V 6 6 pF Co VCC = 5 V, VO = 2.5 V or 0.5 V 11 11 pF † All typical values are at VCC = 5 V. ‡ Not more than one output should be tested at a time, and the duration of the test should not exceed one second. switching characteristics (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 5 V, CL = 50 pF, R1 = 500 Ω, R2 = 500 Ω, TA = 25°C VCC = 4.5 V to 5.5 V, CL = 50 pF, R1 = 500 Ω, R2 = 500 Ω, TA = MIN to MAX§ UNIT ’BCT240 SN54BCT240 SN74BCT240 MIN TYP MAX MIN MAX MIN MAX tPLH A Y 0.5 3.3 4.8 0.5 6.4 0.5 5.6 ns tPHL A Y 0.4 1.8 3.5 0.4 4.5 0.4 4 ns tPZH OE Y 1 6.4 7.9 1 9.2 1 8.8 ns tPZL OE Y 1 7.5 9.4 1 10.8 1 10.5 ns tPHZ OE Y 1 6 6.8 1 8.5 1 8.1 ns tPLZ OE Y 1 6.7 8.1 1 10.6 1 9.5 ns § For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. |
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