Datasheet

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    
SLLS427D − AUGUST 2000 − REVISED JULY 2003
16
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TTL output switching characteristics over recommended operating conditions (unless otherwise
noted)
PARAMETER TEST CONDITIONS MIN NOM MAX UNIT
V
OH
High-level output voltage I
OH
= −1 mA, V
DD
= MIN 2.10 2.3 V
V
OL
Low-level output voltage I
OL
= 1 mA, V
DD
= MIN GND 0.25 0.5 V
t
r(slew)
Slew rate (rising), magnitude of
RX_CLK, RX_ER, RX_DV/LOS, RXD
0.8 V to 2 V, C = 5 pF, See Figure 11 0.5 V/ns
t
f(slew)
Slew rate (falling), magnitude of
RX_CLK, RX_ER, RX_DV/LOS, RXD
0.8 V to 2 V, C = 5 pF, See Figure 11 0.5 V/ns
RXD, RX_DV/LOS, RX_ER
50% voltage swing,
GTX_CLK = 125 MHz 3
t
su
RXD, RX_DV/LOS, RX_ER
setup to ↑ RX_CLK
50% voltage swing,
See Figure 11
GTX_CLK = 100 MHz 4
ns
t
su
setup to ↑ RX_CLK
See Figure 11
GTX_CLK = 75 MHz 5.4
ns
RXD, RX_DV/LOS, RX_ER
50% voltage swing,
GTX_CLK = 125 MHz 3
t
h
RXD, RX_DV/LOS, RX_ER
hold to ↑ RX_CLK
50% voltage swing,
See Figure 11
GTX_CLK = 100 MHz 4
ns
t
h
hold to ↑ RX_CLK
See Figure 11
GTX_CLK = 75 MHz 5.4
ns
RXD(0−15)
2.0 V
0.8 V
2.0 V
0.8 V
RX_CLK
RX_DV, RX_ER,
t
su
t
h
t
f(slew)
t
r(slew)
0 V
2.7 V
0 V
t
r(slew)
t
f(slew)
2.7 V
Figure 11. TTL Data Output Valid Levels for AC Measurements