Datasheet

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SPRS161K − MARCH 2001 − REVISED JULY 2007
74
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
general-purpose input/output timing
switching characteristics over recommended operating conditions (see Figure 37)
PARAMETER MIN MAX UNIT
t
d(GPO)CO
Delay time, CLKOUT low to GPIO low/high
All GPIOs
13
21
ns
t
d(GPO)CO
Delay time, CLKOUT low to GPIO low/high
All GPIOs
13 21 ns
t
r(GPO)
Rise time, GPIO switching low to high All GPIOs 12 ns
t
f(GPO)
Fall time, GPIO switching high to low All GPIOs 15 ns
timing requirements [H = 0.5t
c(CO)
] (see Figure 38)
MIN MAX UNIT
t
w(GPI)
Pulse duration, GPI high/low
2H+15 ns
t
d(GPO)CO
GPIO
CLKOUT
t
r(GPO)
t
f(GPO)
Figure 37. General-Purpose Output Timing
GPIO
CLKOUT
t
w(GPI)
Figure 38. General-Purpose Input Timing