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HCT645 Datasheet(PDF) 4 Page - Texas Instruments |
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HCT645 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 15 page SN54HCT645, SN74HCT645 OCTAL BUS TRANSCEIVERS WITH 3STATE OUTPUTS SCLS019D − MARCH 1984 − REVISED AUGUST 2003 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 switching characteristics over recommended operating free-air temperature range, CL = 150 pF (unless otherwise noted) (see Figure 1) PARAMETER FROM TO VCC TA = 25°C SN54HCT645 SN74HCT645 UNIT PARAMETER FROM (INPUT) TO (OUTPUT) VCC MIN TYP MAX MIN MAX MIN MAX UNIT tpd A or B B or A 4.5 V 20 30 45 38 ns tpd A or B B or A 5.5 V 18 27 41 34 ns ten OE A or B 4.5 V 36 59 89 74 ns ten OE A or B 5.5 V 30 53 80 67 ns tt A or B 4.5 V 17 42 63 53 ns tt A or B 5.5 V 14 38 57 48 ns operating characteristics, TA = 25°C PARAMETER TEST CONDITIONS TYP UNIT Cpd Power dissipation capacitance per transceiver No load 40 pF PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. |
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