Datasheet

SN65LVDS387, SN75LVDS387, SN65LVDS389
SN75LVDS389, SN65LVDS391, SN75LVDS391
HIGH-SPEED DIFFERENTIAL LINE DRIVERS
SLLS362D – SEPTEMBER 1999 – REVISED MAY 2001
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
GND
V
I
A
(V
OY
+ V
OZ
)/2
I
OZ
I
OY
Y
Z
V
OD
V
OY
V
OC
I
I
V
OZ
Figure 1. Voltage and Current Definitions
±
3.75 kΩ
0 V ≤ V
TEST
≤ 2.4 V
Y
Z
V
OD
Input
100 Ω
3.75 kΩ
Figure 2. VOD Test Circuit
Y
Z
Input
50 pF
49.9 Ω ± 1% (2 Places)
V
OC
V
O
V
OC(PP)
V
OC(SS)
0 V
3 V
V
I
NOTE: All input pulses are supplied by a generator having the following characteristics: t
r
or t
f
≤ 1 ns, pulse repetition rate (PRR) = 0.5 Mpps,
pulse width = 500 ± 10 ns. C
L
includes instrumentation and fixture capacitance within 0,06 m of the D.U.T. The measurement of V
OC(PP)
is made on test equipment with a –3 dB bandwidth of at least 300 MHz.
Figure 3. Test Circuit and Definitions for the Driver Common-Mode Output Voltage
Y
Z
V
OD
Input
C
L
= 10 pF
(2 Places)
100 Ω ± 1 %
2 V
1.4 V
0.8 V
t
PLH
t
PHL
100%
80%
20%
0%
Input
Output
0 V
t
f
t
r
V
OD(H)
V
OD(L)
NOTE: All input pulses are supplied by a generator having the following characteristics: t
r
or t
f
≤ 1 ns, pulse repetition rate (PRR) = 50 Mpps, pulse
width = 10 ± 0.2 ns. C
L
includes instrumentation and fixture capacitance within 0,06 m of the D.U.T.
Figure 4. Test Circuit, Timing, and Voltage Definitions for the Differential Output Signal