
MAX14978
SuperSpeed USB Passive Switch
(Low/Full/Hi/SuperSpeed)
4
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +3.0V to +5.5V, VDD = +3.0V to +3.6V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VCC = VDD = +3.3V,
TA = +25NC.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Crosstalk (Note 7)
VCT
Hi-Speed USB switches,
VNOD_, VNCD_= 0dBm,
RL = RS = 50I, Figure 1
f = 10MHz
-73
dB
f = 250MHz
-54
f = 500MHz
-33
SuperSpeed USB switch-
es, crosstalk between any
two pairs,
RS = RL = 50I, unbal-
anced, Figure 1
f = 50MHz
-53
f = 1.25GHz
-32
Signaling Data Rate
BR
SuperSpeed USB switches, RS = RL = 50I
5.0
Gbps
LOGIC INPUT
Input Logic-High
VIH
1.4
V
Input Logic-Low
VIL
0.5
V
Input Leakage Current
IIN
Hi-Speed USB switches
-250
+250
nA
SuperSpeed USB switches,
VSEL2 = 0V or VDD
-1
+1
F
A
Input Logic Hysteresis
VHYST
SuperSpeed USB switches
100
mV
DYNAMIC PERFORMANCE
Turn-On Time
tON
Hi-Speed USB switches,
VNOD_ or VNCD_ = 1.5V, RL = 300I,
CL = 35pF, VEN = VCC to 0V, Figure 2
20
100
F
s
SuperSpeed USB switches,
VNO_ or VNC_ = 1.0V, RL = 50I, Figure 2
90
250
ns
Turn-Off Time
tOFF
VNOD_ or VNCD_ = 1.5V, RL = 300I,
CL = 35pF, VEN = 0V to VCC, Figure 2
1
5
F
s
SuperSpeed USB switches,
VNO_ or VNC_ = 1.0V, RL = 50I, Figure 2
10
50
ns
Propagation Delay
tPLH, tPHL
Hi-Speed USB switches, RL = RS = 50I,
Figure 3
100
ps
SuperSpeed USB switches, RL = RS = 50I
50
Output Skew Between Switches
tSK
Hi-Speed USB switches, skew between
switch 1 and 2, RL = RS = 50I, Figure 3
40
ps
Output Skew Between Pairs
tSK1
SuperSpeed USB switches, RS = RL = 50I,
unbalanced; skew between any two pairs,
Figure 3
50
ps
Output Skew Between Same Pair
tSK2
SuperSpeed USB switches, RS = RL = 50I,
unbalanced; skew between two lines on
same pair, Figure 3
10
ps
Fault-Protection Response Time
tFP
Hi-Speed USB switches,
VCOMD_ = 0V to 5V step, RL = RS = 50I,
VCC = 3.3V, Figure 4
0.5
5.0
F
s