TL16C450_09 Datasheet, PDF (8/27 Pages) Texas Instruments – ASYNCHRONOUS COMMUNICATIONS ELEMENT

TL16C450
ASYNCHRONOUS COMMUNICATIONS ELEMENT
SLLS037C − MARCH 1988 − REVISED JANUARY 2006
modem control switching characteristics over recommended ranges of supply voltage and
operating free-air temperature
PARAMETER
td20
Delay time, WR MCR to output
td21
Delay time, modem interrupt to set interrupt
td22
Delay time, RD MSR to reset interrupt
FIGURE
6
6
6
TEST CONDITIONS
CL = 100 pF
CL = 100 pF
CL = 100 pF
MIN MAX UNIT
100 ns
170 ns
140 ns
PARAMETER MEASUREMENT INFORMATION
tw1
RCLK
(9 MHz Max)
90% _90% 2 V
10%
0.8 V
tw2
N
XTAL1
BAUDOUT
(1/1)
BAUDOUT
(1/2)
BAUDOUT
(1/3)
td1
td1
tw3
td2
td2
tw4
BAUDOUT
(1/N)
(N > 3)
2XTAL1
Cycles
(N-2) XTAL1
Cycles
Figure 1. Baud Generator Timing Waveforms
8
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