ADM3491
TIMING SPECIFICATIONS
VCC = 3.3 V, TA = 25°C.
Table 2.
Parameter
Min
Typ
Max
Unit
Test Conditions/ Comments
DRIVER
Differential Output Delay, TDD
Differential Output Transition Time
Propagation Delay Input to Output, TPLH, TPHL
Driver Output to Output, TSKEW
ENABLE/DISABLE
1
1
7
35
15
35
8
ns
ns
ns
ns
RL = 60 Ω, CL1 = CL2 = 15 pF, Figure 8
RL = 60 Ω, CL1 = CL2 = 15 pF, Figure 8
RL = 27 Ω, CL1 = CL2 = 15 pF, Figure 9
RL = 54 Ω, CL1 = CL2 = 15 pF, Figure 9
8
22
Driver Enable to Output Valid
Driver Disable Timing
Driver Enable from Shutdown
RECEIVER
45
40
650
90
80
110
ns
ns
ns
RL = 110 Ω, CL = 50 pF, Figure 6
RL = 110 Ω, CL = 50 pF, Figure 6
RL = 110 Ω, CL = 15 pF, Figure 6
Time to Shutdown
Propagation Delay Input to Output, TPLH, TPHL
Skew, TPLH – TPHL
Receiver Enable, TEN
Receiver Disable, TDEN
80
25
190
65
300
90
10
50
45
ns
ns
ns
ns
ns
ns
CL = 15 pF, Figure 11
CL = 15 pF, Figure 11
CL = 15 pF, Figure 7
CL = 15 pF, Figure 7
CL = 15 pF, Figure 7
25
25
Receiver Enable from Shutdown
500
VCC = 3.3 V 0.3 V, TA = TMIN to TMAX
.
Table 3.
Parameter
Min
Typ
Max
Unit
Test Conditions/ Comments
DRIVER
Differential Output Delay, TDD
Differential Output Transition Time
Propagation Delay Input to Output, TPLH, TPHL
Driver Output to Output, TSKEW
ENABLE/DISABLE
1
2
7
70
15
70
10
ns
ns
ns
ns
RL = 60 Ω, CL1 = CL2 = 15 pF, Figure 8
RL = 60 Ω, CL1 = CL2 = 15 pF, Figure 8
RL = 27 Ω, CL1 = CL2 = 15 pF, Figure 9
RL = 54 Ω, CL1 = CL2 = 15 pF, Figure 9
8
22
Driver Enable to Output Valid
Driver Disable Timing
Driver Enable from Shutdown
RECEIVER
45
40
650
110
110
110
ns
ns
ns
RL = 110 Ω, CL = 50 pF, Figure 6
RL = 110 Ω, CL = 50 pF, Figure 6
RL = 110 Ω, CL = 15 pF, Figure 6
Time to Shutdown
Propagation Delay Input to Output, TPLH, TPHL
Skew, TPLH – TPHL
Receiver Enable, TEN
Receiver Disable, TDEN
50
25
190
65
500
115
20
50
50
ns
ns
ns
ns
ns
ns
CL = 15 pF, Figure 11
CL = 15 pF, Figure 11
CL = 15 pF, Figure 7
CL = 15 pF, Figure 7
CL = 15 pF, Figure 7
25
25
Receiver Enable from Shutdown
600
Rev. A | Page 4 of 16
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