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SN54HCT377FK Datasheet(PDF) 4 Page - Texas Instruments |
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SN54HCT377FK Datasheet(HTML) 4 Page - Texas Instruments |
4 / 9 page SN54HCT377, SN74HCT377 OCTAL D-TYPE FLIP-FLOPS WITH CLOCK ENABLE SCLS067D – NOVEMBER 1988 – REVISED MARCH 2003 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 timing requirements over recommended operating free-air temperature range (unless otherwise noted) VCC TA = 25°C SN54HCT377 SN74HCT377 UNIT VCC MIN MAX MIN MAX MIN MAX UNIT f lk Clock frequency 4.5 V 25 17 20 MHz fclock Clock frequency 5.5 V 30 19 22 MHz t Pulse duration CLK high or low 4.5 V 20 30 25 ns tw Pulse duration CLK high or low 5.5 V 18 28 23 ns ↑ Data 4.5 V 12 18 15 t Setup time before CLK ↑ Data 5.5 V 10 17 14 ns tsu Setup time before CLK ↑ CLKEN high or low 4.5 V 12 18 15 ns CLKEN high or low 5.5 V 10 17 14 ↑ Data 4.5 V 3 3 3 th Hold time data after CLK ↑ Data 5.5 V 3 3 3 ns th Hold time data after CLK ↑ CLKEN inactive or active 4.5 V 5 5 5 ns CLKEN inactive or active 5.5 V 5 5 5 switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) FROM TO SN54HCT377 PARAMETER FROM (INPUT) TO (OUTPUT) VCC TA = 25°C MIN MAX UNIT (INPUT) (OUTPUT) MIN TYP MAX MIN MAX f 4.5 V 25 31 17 MHz fmax 5.5 V 30 37 19 MHz t d CLK Any 4.5 V 15 30 45 ns tpd CLK Any 5.5 V 12 28 40 ns tt Any 4.5 V 8 15 22 ns tt Any 5.5 V 6 14 21 ns switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) FROM TO SN74HCT377 PARAMETER FROM (INPUT) TO (OUTPUT) VCC TA = 25°C MIN MAX UNIT (INPUT) (OUTPUT) MIN TYP MAX MIN MAX f 4.5 V 25 31 20 MHz fmax 5.5 V 30 37 22 MHz t d CLK Any 4.5 V 15 30 38 ns tpd CLK Any 5.5 V 12 28 35 ns tt Any 4.5 V 8 15 19 ns tt Any 5.5 V 6 14 17 ns operating characteristics, TA = 25°C PARAMETER TEST CONDITIONS TYP UNIT Cpd Power dissipation capacitance No load 30 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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