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SN74ABT543DW Scheda tecnica(PDF) 5 Page - Texas Instruments |
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SN74ABT543DW Scheda tecnica(HTML) 5 Page - Texas Instruments |
5 / 7 page SN54ABT543, SN74ABT543 OCTAL REGISTERED TRANSCEIVERS WITH 3STATE OUTPUTS SCBS157A − JANUARY 1991 − REVISED JULY 1994 2−5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 timing requirements over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 1) VCC = 5 V, TA = 25°C SN54ABT543 SN74ABT543 UNIT MIN MAX MIN MAX MIN MAX UNIT tw Pulse duration, LEAB or LEBA low 3.5 3.5 3.5 ns Data before LEAB or LEBA ↑ High 3.5 3.5 3.5 tsu Setup time Data before LEAB or LEBA ↑ Low 3 3 3 ns tsu Setup time Data before CEAB or CEBA ↑ High 3.5 3.5 3.5 ns Data before CEAB or CEBA ↑ Low 3 3 3 th Hold time Data after LEAB or LEBA ↑ 1† 1† 1† ns th Hold time Data after CEAB or CEBA ↑ 1† 1† 1† ns † This data sheet limit may vary among suppliers. switching characteristics over recommended ranges of supply voltage and operating free-air temperature, CL = 50 pF (unless otherwise noted) (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 5 V, TA = 25°C SN54ABT543 SN74ABT543 UNIT PARAMETER (INPUT) (OUTPUT) MIN TYP MAX MIN MAX MIN MAX UNIT tPLH A or B B or A 1.9 4.4 5.9 1.9 1.9 6.9 ns tPHL A or B B or A 1.9 4.4 5.9 1.9 1.9 6.9 ns tPLH LEBA or LEAB A or B 1.6 4.1 5.6 1.6 1.6 6.6 ns tPHL LEBA or LEAB A or B 2.1 4.6 6.1 2.1 2.1 7.1 ns tPZH OEBA or OEAB A or B 1.4 3.9 5.4 1.4 1.4 6.4 ns tPZL OEBA or OEAB A or B 2.5 5 6.5 2.5 2.5 7.5 ns tPHZ OEBA or OEAB A or B 2.5† 5.9 7.4 2.5† 2.5† 8.4 ns tPLZ OEBA or OEAB A or B 3 5.5 7 3 3 8 ns tPZH CEBA or CEAB A or B 1.4 3.9 5.4 1.4 1.4 6.4 ns tPZL CEBA or CEAB A or B 2.5 5 6.5 2.5 2.5 7.5 ns tPHZ CEBA or CEAB A or B 3.2† 5.9 7.4 3.2† 3.2† 8.4 ns tPLZ CEBA or CEAB A or B 3 5.5 7 3 3 8 ns † This data sheet limit may vary among suppliers. 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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