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SLOS581C – MAY 2008 – REVISED OCTOBER 2009
PARAMETER MEASUREMENT INFORMATION (continued)
V
CC1
DE
A
Input
II
I OA
27
W
A
VOD
B
VB
VA
B
GND1
VI
GND2
I OB
VOB
GND1
GND2
27
W
VOC
VOA
V OC
Input
VOC(p-p)
Generator PRR= 100 kHz, 50 % duty
:
cycle, t r < 6ns , t f < 6 ns , ZO = 50
W
VOC(SS)
Figure 3. Test Circuit and Waveform Definitions For The Driver Common-Mode Output Voltage
V
CC1
DE
A
D
Input
Generator
B
VI
50
W
GND 1
VOD
C
L
= 50 pF
R
L
= 54
W
±20%
±1%
VI
t
PLH
VOD
50
%
10%
tr
50%
t
PHL
90%
90%
50%
3V
V
OD(H)
50
%
10%
V
OD(L)
Generator PRR = 100 kHz, 50 % duty cycle,
:
t r < 6ns , t f <6 ns , ZO = 50
C
L
includes fixture and
instrumentation capacitance
tf
Figure 4. Driver Switching Test Circuit and Voltage Waveforms
3 V if testing A output
,
0 V if testing B output
3 V or 0 V
D
DE
Input
V
Generator
I
GND 1
Generator PRR = 50 kHz, 50% duty cycle,
t
r
<6ns, t
f
<6ns, Z
O
= 50
W
A
3V
S1
V
O
VI
t
PZH
90%
VO
50%
t
PHZ
~0 V
~
50%
50%
0V
R
L
= 110
W
±1%
VOH
C
L
= 50 pF ±20%
50
W
CL
includes fixture and
instrumentation
capacitance
Figure 5. Driver High-Level Output Enable and Disable Time Test Circuit and Voltage Waveforms
Copyright © 2008–2009, Texas Instruments Incorporated
5
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