ADM1486
PRELIMINARY TECHNICAL DATA
Test Circuits
VOD
R
R
VOC
Figure 1. Driver Voltage Measurement Test Circuit
0V OR 3V
A
S1
VCC
RL
S2
DE
B
CL VOUT
DE IN
Figure 4. Driver Enable/Disable Test Circuit
375⍀
VOD3 60⍀
375⍀
VTST
Figure 2. Driver Voltage Measurement Test Circuit 2
A
CL1
RLDIFF
B
CL2
Figure 3. Driver Propagation Delay Test Circuit
A
B
RE
VOUT
CL
Figure 5. Receiver Propagation Delay Test Circuit
+1.5V
VCC
S1
–1.5V
RL
S2
RE
CL VOUT
RE IN
Figure 6. Receiver Enable/Disable Test Circuit
Switching Characteristics
3V
1.5V
1.5V
0V
TPLH
B
1/2VO
VO
TPHL
A
VO
0V
–VO
90% POINT
10% POINT
TR
TSKEW
TSKEW
90% POINT
10% POINT
TF
Figure 7. Driver Propagation Delay, Rise/Fall Timing
DE
1.5V
TZL
3V
1.5V
0V
TLZ
A, B
A, B
2.3V
TZH
2.3V
VOL +0.5V
THZ
VOH –0.5V
VOL
VOH
0V
Figure 8. Driver Enable/Disable Timing
A, B
0V
0V
TPLH
RO
1.5V
TPHL
1.5V
VOH
VOL
Figure 9. Receiver Propagation Delay
1.5V
RE
TZL
3V
1.5V
0V
TLZ
1.5V
R
O/P LOW
VOL +0.5V
VOL
TZH
THZ
O/P HIGH
VOH
R
1.5V
VOH –0.5V
0V
Figure 10. Receiver Enable/Disable Timing
–4–
REV. PrB