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TL16C451FN Fiches technique(PDF) 9 Page - Texas Instruments |
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TL16C451FN Fiches technique(HTML) 9 Page - Texas Instruments |
9 / 24 page TL16C451, TL16C452 ASYNCHRONOUS COMMUNICATIONS ELEMENTS SLLS053C – MAY 1989 – REVISED AUGUST 1999 9 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 td16 Delay time, modem input (CTS, DSR, RLSD) ↑ to set interrupt (INTRPT) high 6 CL = 100 pF 170 ns td17 Delay time, read MSR (IOR) ↑ to reset interrupt (INTRPT) low 6 CL = 100 pF 140 ns parallel port switching characteristics over recommended ranges of supply voltage and operating free-air temperature PARAMETER FIGURE TEST CONDITIONS MIN MAX UNIT td18 Delay time, write parallel port control (SLIN, AFD, STB, INIT) ↓↑ to output (IOW) high 7 CL = 100 pF 60 ns td19 Delay time, write parallel port data (P0 – P7) ↓↑ to output (IOW) high 7 CL = 100 pF 60 ns td20 Delay time, output enable to data, PD0 – PD7 valid after LPTOE ↓ 7 CL = 100 pF 60 ns td21 Delay time, ACK ↓↑ to INT2↓↑ 7 CL = 100 pF 100 ns PARAMETER MEASUREMENT INFORMATION (N-2) Clock Cycles 2 Clock Cycles tw1 tw2 2 V 0.8 V N CLK (9 MHz Max) BAUDOUT (1/1) (see Note A) BAUDOUT (1/2) BAUDOUT (1/3) BAUDOUT (1/N) (N > 3) CLK NOTE A: BAUDOUT is an internally generated signal used in the receiver and transmitter circuits to synchronize data. Figure 1. Baud Generator Timing Waveforms |
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