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SN74HC259 Datasheet(PDF) 7 Page - Texas Instruments |
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SN74HC259 Datasheet(HTML) 7 Page - Texas Instruments |
7 / 9 page SN54HC259, SN74HC259 8-BIT ADDRESSABLE LATCHES SCLS134B – DECEMBER 1982 – REVISED MAY 1997 7 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 timing requirements over recommended operating free-air temperature range (unless otherwise noted) VCC TA = 25°C SN54HC259 SN74HC259 UNIT VCC MIN MAX MIN MAX MIN MAX UNIT 2 V 80 120 100 CLR low 4.5 V 16 24 20 t Pulse duration 6 V 14 20 17 ns tw Pulse duration 2 V 80 120 100 ns G low 4.5 V 16 24 20 6 V 14 20 17 ↑ 2 V 75 115 95 tsu Setup time, data or address before G ↑ 4.5 V 15 23 19 ns 6 V 13 20 16 ↑ 2 V 5 5 5 th Hold time, data or address after G ↑ 4.5 V 5 5 5 ns 6 V 5 5 5 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 SN54HC259 SN74HC259 UNIT PARAMETER (INPUT) (OUTPUT) VCC MIN TYP MAX MIN MAX MIN MAX UNIT 2 V 60 150 225 190 tPHL CLR Any Q 4.5 V 18 30 45 38 ns 6 V 14 26 38 32 2 V 56 130 195 165 Data Any Q 4.5 V 17 26 39 33 6 V 13 22 33 28 2 V 74 200 300 250 tpd Address Any Q 4.5 V 21 40 60 50 ns 6 V 17 34 51 43 2 V 66 170 255 215 G Any Q 4.5 V 20 34 51 43 6 V 16 29 43 37 2 V 28 75 110 95 tt Any 4.5 V 8 15 22 19 ns 6 V 6 13 19 16 operating characteristics, TA = 25°C PARAMETER TEST CONDITIONS TYP UNIT Cpd Power dissipation capacitance per latch No load 33 pF |
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