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TL16C450 Folha de dados(PDF) 7 Page - Texas Instruments |
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TL16C450 Folha de dados(HTML) 7 Page - Texas Instruments |
7 / 25 page TL16C450 ASYNCHRONOUS COMMUNICATIONS ELEMENT SLLS037B – MARCH 1988 – REVISED MARCH 1996 7 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 system switching characteristics over recommended ranges of supply voltage and operating free-air temperature PARAMETER FIGURE TEST CONDITIONS MIN MAX UNIT tw1 Pulse duration, clock high 1 f = 9 MHz maximum 50 ns tw2 Pulse duration, clock low 1 f = 9 MHz maximum 50 ns td3 Delay time, select to CS output 2, 3† CL = 100 pF 70 ns td10 Delay time, RD1 ↓ or RD2↑ to data valid 3 CL = 100 pF 60 ns td11 Delay time, RD1 ↑ or RD2↓ to floating data 3 CL = 100 pF 0 60 ns tdis(R) Disable time, RD1 ↓↑ or RD2↑↓ to DDIS↑↓ 3 CL = 100 pF 60 ns † Only applies when ADS is low. baud generator switching characteristics over recommended ranges of supply voltage and operating free-air temperature PARAMETER FIGURE TEST CONDITIONS MIN MAX UNIT t 3 Pulse duration BAUDOUT low 1 f = 6.25 MHz, CLK ÷ 1, 80 ns tw3 Pulse duration, BAUDOUT low 1 , , CL = 100 pF 80 ns t 4 Pulse duration BAUDOUT high 1 f = 6.25 MHz, CLK ÷ 1, 80 ns tw4 Pulse duration, BAUDOUT high 1 , , CL = 100 pF 80 ns td1 Delay time, XIN ↑ to BAUDOUT↑ 1 CL = 100 pF 125 ns td2 Delay time, XIN ↑↓ to BAUDOUT↓ 1 CL = 100 pF 125 ns receiver switching characteristics over recommended ranges of supply voltage and operating free-air temperature PARAMETER FIGURE TEST CONDITIONS MIN MAX UNIT td12 Delay time, RCLK to sample clock 4 100 ns td13 Delay time, stop to set RCV error interrupt or read RDR to LSI interruptorstop to 4 1 1 RCLK td13 RDR to LSI interrupt or stop to RXRDY ↓ 4 1 1 cycles td14 Delay time, read RBR/LSR to reset interrupt 4 CL = 100 pF 140 ns transmitter switching characteristics over recommended ranges of supply voltage and operating free-air temperature PARAMETER FIGURE TEST CONDITIONS MIN MAX UNIT td15 Delay time INTRPT to transmit start 5 8 24 baudout td15 Delay time, INTRPT to transmit start 5 8 24 cycles td16 Delay time start to interrupt 5 8 8 baudout td16 Delay time, start to interrupt 5 8 8 cycles td17 Delay time, WR THR to reset interrupt 5 CL = 100 pF 140 ns td18 Delay time initial write to interrupt (THRE) 5 16 32 baudout td18 Delay time, initial write to interrupt (THRE) 5 16 32 cycles td19 Delay time, read IIR to reset interrupt (THRE) 5 CL = 100 pF 140 ns |
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Descrição semelhante - TL16C450 |
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