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SN54ABT646A Datasheet(PDF) 7 Page - Texas Instruments |
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SN54ABT646A Datasheet(HTML) 7 Page - Texas Instruments |
7 / 24 page SN54ABT646A, SN74ABT646A OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3STATE OUTPUTS SCBS069H − JULY 1991 − REVISED MAY 2004 7 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 timing requirements over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 2) SN74ABT646A VCC = 5 V, TA = 25°C MIN MAX UNIT MIN MAX MIN MAX fclock Clock frequency 125 125 MHz tw Pulse duration, CLK high or low 4 4 ns tsu Setup time, A or B before CLKAB ↑ or CLKBA↑ 3 3 ns th Hold time, A or B after CLKAB ↑ or CLKBA↑ 0 0 ns switching characteristics over recommended ranges of supply voltage and operating free-air temperature, CL = 50 pF (unless otherwise noted) (see Figure 2) SN54ABT646A PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 5 V, TA = 25°C MIN MAX UNIT (INPUT) (OUTPUT) MIN TYP MAX MIN MAX fmax 125 125 MHz tPLH CLKBA or CLKAB A or B 2.2 4 5.1 2.2 6.7 ns tPHL CLKBA or CLKAB A or B 1.7 4 5.1 1.2 6.7 ns tPLH A or B B or A 1.5 3 4.3 1.5 5 ns tPHL A or B B or A 1.5 3.3 4.6 1.5 5.6 ns tPLH SAB or SBA† B or A 1.5 4 5.7 1.5 7.8 ns tPHL SAB or SBA† B or A 1.5 3.6 4.9 1.5 6.2 ns tPZH OE A or B 1.5 4.3 5.3 1.5 7 ns tPZL OE A or B 3 5.8 8 3 10.5 ns tPHZ OE A or B 1.5 3.5 5.8 1 7.3 ns tPLZ OE A or B 1.5 3 4 1.5 5.7 ns tPZH DIR A or B 1.5 4.5 5.7 1.5 7.3 ns tPZL DIR A or B 2.5 6.5 9 2.5 11 ns tPHZ DIR A or B 1.5 3.8 6.5 1 9 ns tPLZ DIR A or B 1.5 3.8 4.7 1.2 6.7 ns † These parameters are measured with the internal output state of the storage register opposite that of the bus input. |
Similar Part No. - SN54ABT646A_07 |
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Similar Description - SN54ABT646A_07 |
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