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SN74ABT16843 데이터시트(PDF) 6 Page - Texas Instruments |
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SN74ABT16843 데이터시트(HTML) 6 Page - Texas Instruments |
6 / 10 page SN54ABT16843, SN74ABT16843 18-BIT BUS-INTERFACE D-TYPE LATCHES WITH 3-STATE OUTPUTS SCBS223E – OCTOBER 1992 – REVISED MAY 1997 6 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 1) VCC = 5 V, TA = 25°C SN54ABT16843 SN74ABT16843 UNIT MIN MAX MIN MAX MIN MAX CLR low 3.3 3.3 3.3 tw Pulse duration PRE low 3.3 3.3 3.3 ns LE high 3.3 3.3 3.3 t Setup time data before LE ↓ High 0.9 0.9 0.9 ns tsu Setup time, data before LE ↓ Low 0.6 0.6 0.6 ns th Hold time data after LE ↓ High 1.7 1.7 1.7 ns th Hold time, data after LE ↓ Low 1.8 1.8 1.8 ns 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 SN54ABT16843 SN74ABT16843 UNIT (INPUT) (OUTPUT) MIN TYP MAX MIN MAX MIN MAX tPLH D Q 1.6 3.1 4.2 1.6 5.1 1.6 4.8 ns tPHL D Q 1.6 3.2 4.2 1.6 5 1.6 4.8 ns tPLH LE Q 2.3 4 5 2.3 6.3 2.3 5.9 ns tPHL LE Q 2.5 3.9 4.8 2.5 5.6 2.5 5.3 ns tPLH PRE Q 2.1 4 5.1 2.1 6.3 2.1 6.1 ns tPHL PRE Q 2.2 3.7 4.6 2.2 5.3 2.2 5 ns tPLH CLR Q 1.9 3.7 4.8 1.9 5.7 1.9 5.4 ns tPHL CLR Q 2.2 4.2 5.3 2.2 6.1 2.2 6 ns tPZH OE Q 1.6 3.3 4.3 1.6 5.5 1.6 5.4 ns tPZL OE Q 2 3.2 4.6 2 5.9 2 5.8 ns tPHZ OE Q 1.7 4 5.5 1.7 6.4 1.7 6.3 ns tPLZ OE Q 1.7 3.7 4.4 1.7 5.3 1.7 5.2 ns 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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