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TL16C554AI 데이터시트(PDF) 8 Page - Texas Instruments |
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TL16C554AI 데이터시트(HTML) 8 Page - Texas Instruments |
8 / 10 page TL16C554A, TL16C554AI ASYNCHRONOUS-COMMUNICATIONS ELEMENT SLLS509A – AUGUST 2001 – REVISED JULY 2003 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions, low voltage (3.3-V nominal) MIN NOM MAX UNIT Supply voltage, VCC 3 3.3 3.6 V Clock high-level input voltage at XTAL1, VIH(CLK) 2 VCC V Clock low-level input voltage at XTAL1, VIL(CLK) – 0.5 0.8 V High-level input voltage, VIH 2 VCC V Low-level input voltage, VIL – 0.5 0.8 V Clock frequency, fclock 16 MHz Operating free-air temperature TA TL16C554A 0 70 °C O erating free-air tem erature, TA TL16C554AI –40 85 °C electrical characteristics over recommended ranges of operating free-air temperature and supply voltage, low voltage (3.3-V nominal) (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT VOH‡ High-level output voltage IOH = – 1 mA 2.4 V VOL‡ Low-level output voltage IOL = 1.6 mA 0.4 V IIkg Input leakage current VCC = 3.6 V, GND = 0, VI = 0 to 3.6 V, All other terminals floating ±10 µA IOZ High-impedance output current VCC = 3.6 V, GND = 0, VO = 0 to 3.6 V, Chip selected in write mode or chip deselected ±20 µA ICC Supply current VCC = 3.6 V, TA = 25°C, RX, DSR, DCD, CTS, and RI at 2 V, All other inputs at 0.8 V, XTAL1 at 4 MHz, No load on outputs, Baud rate = 50 kilobits per second 40 mA Ci(XTAL1) Clock input capacitance 15 20 pF Co(XTAL2) Clock output capacitance VCC = 0, VSS = 0, all other terminals grounded, 20 30 pF Ci Input capacitance CC SS g f = 1 MHz, TA = 25°C 6 10 pF Co Output capacitance 10 20 pF † All typical values are at VCC = 3.3 V, TA = 25°C. ‡ These parameters apply for all outputs except XTAL2. clock timing requirements over recommended ranges of operating free-air temperature and supply voltage (see Figure 1) MIN MAX UNIT tw1 Pulse duration, clock high (external clock) 31 ns tw2 Pulse duration, clock low (external clock) 31 ns tw3 Pulse duration, RESET 1000 ns |
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