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SN74BCT244DB 데이터시트(PDF) 4 Page - Texas Instruments |
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SN74BCT244DB 데이터시트(HTML) 4 Page - Texas Instruments |
4 / 5 page SN54BCT244, SN74BCT244 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS006E – OCTOBER 1987 – REVISED APRIL 1994 2–4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 switching characteristics (see Note 2) 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 ′BCT244 SN54BCT244 SN74BCT244 MIN TYP MAX MIN MAX MIN MAX tPLH A Y 1.2 2.5 4.4 0.9 5.3 0.9 5 ns tPHL A Y 1.7 3.2 5 1.4 6 1.4 5.5 ns tPZH OE Y 2 5.7 7.8 2 9 2 8.7 ns tPZL OE Y 2 5.9 8.1 2 9.4 2 8.9 ns tPHZ OE Y 2 5.4 6.7 2 8 2 7.7 ns tPLZ OE Y 2 6.1 7.6 2 9.8 2 8.9 ns † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. NOTE 2: Load circuits and voltage waveforms are shown in Section 1. |
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