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SN54HC164, SN74HC164 8BIT PARALLELOUT SERIAL SHIFT REGISTERS SCLS115D − DECEMBER 1982 − REVISED AUGUST 2003 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 timing requirements over recommended operating free-air temperature range (unless otherwise noted) VCC TA = 25°C SN54HC164 SN74HC164 UNIT VCC MIN MAX MIN MAX MIN MAX UNIT 2 V 6 4.2 5 fclock Clock frequency 4.5 V 31 21 25 MHz fclock Clock frequency 6 V 36 25 28 MHz 2 V 100 150 125 CLR low 4.5 V 20 30 25 tw Pulse duration CLR low 6 V 17 25 21 ns tw Pulse duration 2 V 80 120 100 ns CLK high or low 4.5 V 16 24 20 CLK high or low 6 V 14 20 18 2 V 100 150 125 Data 4.5 V 20 30 25 tsu Setup time before CLK ↑ Data 6 V 17 25 21 ns tsu Setup time before CLK ↑ 2 V 100 150 125 ns CLR inactive 4.5 V 20 30 25 CLR inactive 6 V 17 25 21 2 V 5 5 5 th Hold time, data after CLK ↑ 4.5 V 5 5 5 ns th Hold time, data after CLK 6 V 5 5 5 ns switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) PARAMETER FROM TO VCC TA = 25°C SN54HC164 SN74HC164 UNIT PARAMETER FROM (INPUT) TO (OUTPUT) VCC MIN TYP MAX MIN MAX MIN MAX UNIT 2 V 6 10 4.2 5 fmax 4.5 V 31 54 21 25 MHz fmax 6 V 36 62 25 28 MHz 2 V 140 205 295 255 tPHL CLR Any Q 4.5 V 28 41 59 51 tPHL CLR Any Q 6 V 24 35 51 46 ns 2 V 115 175 265 220 ns tpd CLK Any Q 4.5 V 23 35 53 44 tpd CLK Any Q 6 V 20 30 45 38 2 V 38 75 110 95 tt 4.5 V 8 15 22 19 ns tt 6 V 6 13 19 16 ns operating characteristics, TA = 25°C PARAMETER TEST CONDITIONS TYP UNIT Cpd Power dissipation capacitance No load 135 pF |
