Datasheet

MAX14978
SuperSpeed USB Passive Switch
(Low/Full/Hi/SuperSpeed)
4
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +3.0V to +5.5V, V
DD
= +3.0V to +3.6V, T
A
= -40NC to +85NC, unless otherwise noted. Typical values are at V
CC
= V
DD
= +3.3V,
T
A
= +25NC.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Crosstalk (Note 7) V
CT
Hi-Speed USB switches,
V
NOD_
, V
NCD_
= 0dBm,
R
L
= R
S
= 50I, Figure 1
f = 10MHz -73
dB
f = 250MHz -54
f = 500MHz -33
SuperSpeed USB switch-
es, crosstalk between any
two pairs,
R
S
= R
L
= 50I, unbal-
anced, Figure 1
f = 50MHz -53
f = 1.25GHz -32
Signaling Data Rate BR SuperSpeed USB switches, R
S
= R
L
= 50I 5.0 Gbps
LOGIC INPUT
Input Logic-High V
IH
1.4 V
Input Logic-Low V
IL
0.5 V
Input Leakage Current I
IN
Hi-Speed USB switches -250 +250 nA
SuperSpeed USB switches,
V
SEL2
= 0V or V
DD
-1 +1 FA
Input Logic Hysteresis V
HYST
SuperSpeed USB switches 100 mV
DYNAMIC PERFORMANCE
Turn-On Time t
ON
Hi-Speed USB switches,
V
NOD
_ or V
NCD_
= 1.5V, R
L
= 300I,
C
L
= 35pF, V
EN
= V
CC
to 0V, Figure 2
20 100 Fs
SuperSpeed USB switches,
V
NO_
or V
NC_
= 1.0V, R
L
= 50I, Figure 2
90 250 ns
Turn-Off Time t
OFF
V
NOD_
or V
NCD_
= 1.5V, R
L
= 300I,
C
L
= 35pF, V
EN
= 0V to V
CC
, Figure 2
1 5 Fs
SuperSpeed USB switches,
V
NO_
or V
NC_
= 1.0V, R
L
= 50I, Figure 2
10 50 ns
Propagation Delay t
PLH
, t
PHL
Hi-Speed USB switches, R
L
= R
S
= 50I,
Figure 3
100
ps
SuperSpeed USB switches, R
L
= R
S
= 50I 50
Output Skew Between Switches t
SK
Hi-Speed USB switches, skew between
switch 1 and 2, R
L
= R
S
= 50I, Figure 3
40 ps
Output Skew Between Pairs t
SK1
SuperSpeed USB switches, R
S
= R
L
= 50I,
unbalanced; skew between any two pairs,
Figure 3
50 ps
Output Skew Between Same Pair t
SK2
SuperSpeed USB switches, R
S
= R
L
= 50I,
unbalanced; skew between two lines on
same pair, Figure 3
10 ps
Fault-Protection Response Time t
FP
Hi-Speed USB switches,
V
COMD_ =
0V to 5V step, R
L
= R
S
= 50I,
V
CC
= 3.3V, Figure 4
0.5 5.0 Fs