Datasheet

MAX4899E/MAX4899AE
USB 2.0 High-Speed, Fault-Tolerant 3:1, 4:1
Multiplexers
_______________________________________________________________________________________ 3
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SWITCH AC PERFORMANCE (Note 3)
On-Loss ON
LOSS
f = 10MHz, 0 < V
IN
< 1V, Figure 1 0.5 dB
Crosstalk
V
CT1
,
V
DCT1
f = 50MHz, Figure 1 -50 dB
Off-Isolation V
ISO
f = 50MHz, Figure 1 -45 dB
Charge-Pump Noise V
QP
COM
A
_, USB_, R
L
= R
S
= 50Ω (Note 4) 100 µV
Bandwidth -3dB BW R
S
= R
L
= unbalanced 50Ω 425 MHz
Off-Capacitance C
OFF
f = 1MHz, COM
A
_, USB_, Figure 2 10.5 pF
On-Capacitance C
ON
f = 1MHz, COM
A
_, USB_, Figure 2 15 pF
Propagation Delay t
PD
R
L
= R
S
= 50Ω, Figure 3 200 ps
Output Skew Same Switch t
SK
Skew between opposite transitions in same
switch, Figure 3
100 ps
Fault-Protection Response Time t
FP
V
COMA_
= 0V to 5V to V
USB__
= 2.5V, R
L
=
50Ω, C
L
= 10pF, Figure 4
1µs
Fault-Protection Recovery Time t
FPR
V
COMA_
= 5V to 3V to V
USB__
= 1.5V, R
L
=
50Ω, C
L
= 10pF, Figure 4
1µs
Charge Injection Q V
GEN
= 0, C
L
= 1000pF, Figure 5 25 pC
Enable Turn-On Time t
ON
V
U S B 0+
= V + , R
L
= 50Ω , C
L
= 10p F, Fi g ur e 6 2.8 µs
Enable Turn-Off Time t
OFF
V
U S B 0+
= V + , R
L
= 50Ω , C
L
= 10p F, Fi g ur e 6 3 ns
Address Transition Time t
TRANS
V
U S B 0+
= V + , R
L
= 50Ω , C
L
= 10p F, Fi g ur e 7 1.2 µs
Total Harmonic Distortion Plus
Noise
THD+N
f = 20Hz to 20kHz, V
COMA_
= 1V
P-P
, R
L
=
600Ω
0.02 %
SWITCH LOGIC (QP, EN, C
0
, C
1
)
Logic-Input Voltage Low V
IL
0.4 V
Logic-Input Voltage High V
IH
1.4 V
Input Logic Hysteresis V
HYST
100 mV
Input Leakage Current I
LEAK
V+ = 3.6V, C
0
= 0 or V+, C
1
= 0 or V+ -1 1 µA
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +2.7V to +3.6V, T
A
= -40°C to +85°C, QP = low, EN = low, unless otherwise noted. Typical values are at V+ = +3.3V and T
A
=
+25°C.) (Note 2)
Note 2: Limits at -40°C are guaranteed by design.
Note 3: Guaranteed by design.
Note 4: Charge-pump noise is specified as a peak-to-peak value.