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Y
Z
Input
(see Note A)
C
L
= 10 pF
(2 Places)
(see Note C)
V
OC
A
V
CC
V
OC(PP)
(see Note D)
V
OC(SS)
V
I(B)
V
I(A)
Pulse
Generator
DE
B
1.4 V
1 V
R
L
(see Note B)
(2 Places)
10 pF
Pulse
Generator
80%
20%
0-V Differential
V
OY
– V
OZ
V
IB
V
IA
1.4 V
1 V
t
PLH
t
PHL
t
r
t
f
A
B
R D
10 pF
V
OZ
V
OY
1.4 V
1 V
0-V Differential
0-V Differential
1.2-V CM
1.2-V CM
DE
R
L
(see Note A)
Y
Z
SN65LVDS22
SN65LVDM22
SLLS315C – DECEMBER 1998 – REVISED JUNE 2002
PARAMETER MEASUREMENT INFORMATION (continued)
A. 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.
B. R
L
= 100 Ω or 50 Ω ±1%
C. C
L
includes instrumentation and fixture capacitance within 6 mm of the D.U.T.
D. 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
A. R
L
= 100 Ω or 50 Ω ±1%
B. All input pulses are supplied by a generator having the following characteristics: pulse repetition rate (PRR) = 50
Mpps, pulse width = 10 ±0.2 ns.
Figure 4. Differential Receiver to Driver Propagation Delay and Driver Transition Time Waveforms
7
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