Datasheet

TLK3101
2.5 Gbps to 3.125 Gbps TRANSCEIVER
SCAS649B − AUGUST 2000 − REVISED JANUARY 2008
17
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TTL output switching characteristics over recommended operating free-air temperature range
(unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP 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)
Magnitude of RX_CLK, RX_ER,
RX_DV/LOS, RXD slew rate (rising)
0.8 V to 2 V, C = 5 pF, See Figure 11 0.5 V/ns
t
f(slew)
Magnitude of RX_CLK, RX_ER,
RX_DV/LOS, RXD slew rate (falling)
0.8 V to 2 V, C = 5 pF, See Figure 11 0.5 V/ns
t
RXD, RX
_
DV/LOS, RX
_
ER setup to ↑ 50% voltage swing,
GTX_CLK = 156.25 MHz 2.5 ns
t
su
RXD
,
RX
_
DV/LOS
,
RX
_
ER setup to ↑
RX_CLK
50% voltage swing
,
See Figure 11
GTX_CLK = 125 MHz 3 ns
t
RXD, RX
_
DV/LOS, RX
_
ER hold to ↑ 50% volta
g
e swin
g
,
GTX_CLK = 156.25 MHz 2.5 ns
t
h
RXD
,
RX
_
DV/LOS
,
RX
_
ER hold to ↑
RX_CLK
50% voltage swing
,
See Figure 11
GTX_CLK = 125 MHz 3 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