Datasheet

MAX3421E
USB Peripheral/Host Controller
with SPI Interface
12
Maxim Integrated
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +3V to +3.6V, V
L
= +1.4V to +3.6V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +3.3V, V
L
=
+2.5V, T
A
= +25°C.) (Note 3)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Differential-Receiver Common-
Mode Voltage
0.8 2.5 V
Single-Ended Receiver Input Low
Voltage
V
IL
0.8 V
Single-Ended Receiver Input
High Voltage
V
IH
2.0 V
Single-Ended Receiver
Hysteresis Voltage
0.2 V
D+, D- Output Low Voltage V
OL
R
L
= 1.5kΩ from D+ to 3.6V 0.3 V
D+, D- Output High Voltage V
OH
R
L
= 15kΩ from D+ and D- to GND 2.8 3.6 V
Driver Output Impedance
Excluding External Resistor
(Note 4) 2 7 11 Ω
D+ Pullup Resistor R
EXT
= 33Ω 1.425 1.5 1.575 kΩ
D+, D- Pulldown Resistor R
EXT
= 33Ω 14.25 15 15.75 kΩ
D+, D- Input Impedance 300 kΩ
ESD PROTECTION (D+, D-, VBCOMP)
Human Body Model
1µF ceramic capacitors from VBCOMP and
V
CC
to GND
±15 kV
IEC 61000-4-2 Air-Gap Discharge
1µF ceramic capacitors from VBCOMP and
V
CC
to GND
±12 kV
IEC 61000-4-2 Contact Discharge
1µF ceramic capacitors from VBCOMP and
V
CC
to GND
±8 kV
THERMAL SHUTDOWN
Thermal-Shutdown Low-to-High +160 °C
Thermal-Shutdown High-to-Low +140 °C
CRYSTAL OSCILLATOR SPECIFICATIONS (XI, XO)
XI Input High Voltage 2/3 x V
C C
V
CC
V
XI Input Low Voltage 0.4 V
XI Input Current 10 µA
XI, XO Input Capacitance 3pF
VBCOMP COMPARATOR SPECIFICATIONS
VBCOMP Comparator Threshold V
TH
1.0 2.0 3.0 V
VBCOMP Comparator Hysteresis V
HYS
375 mV
VBCOMP Comparator Input
Impedance
R
IN
100 kΩ