Datasheet
V
IB
V
ID
V
IA
V
IC
V
O
A
B
R
V
IA
) V
IB
2
SN65LVDS386/388A/390, SN65LVDT386/388A/390
SN75LVDS386/388A/390, SN75LVDT386/388A/390
SLLS394H –SEPTEMBER 1999–REVISED MAY 2007
www.ti.com
SWITCHING CHARACTERISTICS
over recommended operating conditions (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP
(1)
MAX UNIT
t
PLH
Propagation delay time, low-to-high-level output 1 2.6 4 ns
t
PHL
Propagation delay time, high-to-low-level output 1 2.5 4 ns
t
r
Output signal rise time 500 800 1200 ps
t
f
Output signal fall time See Figure 2 500 800 1200 ps
t
sk(p)
Pulse skew (|t
PHL
- t
PLH
|) 150 600 ps
t
sk(o)
Output skew
(2)
100 400 ps
t
sk(pp)
Part-to-part skew
(3)
1 ns
t
PZH
Propagation delay time, high-impedance-to-high-level output 7 15 ns
t
PZL
Propagation delay time, high-impedance-to-low-level output 7 15 ns
See Figure 3
t
PHZ
Propagation delay time, high-level-to-high-impedance output 7 15 ns
t
PLZ
Propagation delay time, low-level-to-high-impedance output 7 15 ns
(1) All typical values are at 25°C and with a 3.3-V supply.
(2) t
sk(o)
is the magnitude of the time difference between the t
PLH
or t
PHL
of all drivers of a single device with all of their inputs connected
together.
(3) t
sk(pp)
is the magnitude of the difference in propagation delay times between any specified terminals of any two devices characterized in
this data sheet when both devices operate with the same supply voltage, at the same temperature, and have the same test circuits.
PARAMETER MEASUREMENT INFORMATION
Figure 1. Voltage Definitions
Table 3. Receiver Minimum and Maximum Input Threshold Test Voltages
RESULTING DIFFERENTIAL RESULTING COMMON-
APPLIED VOLTAGES
INPUT VOLTAGE MODE INPUT VOLTAGE
V
IA
V
IB
V
ID
V
IC
1.25 V 1.15 V 100 mV 1.2 V
1.15 V 1.25 V –100 mV 1.2 V
2.4 V 2.3 V 100 mV 2.35 V
2.3 V 2.4 V –100 mV 2.35 V
0.1 V 0 V 100 mV 0.05 V
0 V 0.1 V –100 mV 0.05 V
1.5 V 0.9 V 600 mV 1.2 V
0.9 V 1.5 V –600 mV 1.2 V
2.4 V 1.8 V 600 mV 2.1 V
1.8 V 2.4 V –600 mV 2.1 V
0.6 V 0 V 600 mV 0.3 V
0 V 0.6 V –600 mV 0.3 V
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SN75LVDT386/388A/390