MAX3345EEBE-T Maxim Integrated, MAX3345EEBE-T Datasheet - Page 7

• Manufacturer Part Number: MAX3345EEBE-T
• Description: USB Interface IC
• Manufacturer: Maxim Integrated

Specifications of MAX3345EEBE-T

• Product: USB 2.0
• Data Rate: 12 Mbps, 480 Mbps
• Interface Type: Differential Data Interface, Single End
• Operating Supply Voltage: 4 V to 5.5 V
• Operating Supply Current: 10 mA

Connect V
1). Connect V
V
MAX3344E/MAX3345E can derive power from a single
Li+ battery. Connect the battery to V
above +3.0V for V
Additionally, the MAX3344E/MAX3345E can derive
power from a 3.3V ±10% voltage regulator. Connect V
and VTRM to an external +3.3V voltage regulator.
Connect V
unconnected or connect to GND. D+ and D- enter a tri-
state mode and V
current. D+ and D- withstand external signals up to
+5.5V in disable mode (Table 2).
Connect V
V
and D- enter a tri-state mode, allowing other circuitry to
share the USB D+ and D- lines, and V
than 20µA of supply current. D+ and D- withstand exter-
nal signals up to +5.5V in sharing mode (Table 2).
Table 2. Disable-Mode and Sharing-Mode Configurations
*High Impedance or low.
**High or low.
Table 1. Power-Supply Configurations
CC
CC
V
V
D+ and D-
VPI and VMI
RCV
SPEED, SUSP, OE, ENUM
CC
L
GND or floating
and VTRM) unconnected or connect to GND. D+
to a +4.0V to +5.5V supply. Alternatively, the
/VTRM
+4.0 to +5.5
+3.1 to +4.5
+3.0 to +3.6
+3.0 to +5.5
V
CC
L
L
CC
INPUTS/OUTPUTS
to a system power supply and leave V
(V)
and V
L
to a system power supply and leave V
to a +1.65V to +3.6V supply. Connect
CC
CC
_______________________________________________________________________________________
CC
Power-Supply Configurations
±15kV ESD-Protected USB Transceivers
consumes less than 20µA of supply
as low as +3.1V.
to system power supplies (Table
+3.0 to +3.6 Input
+3.3 Output
+3.3 Output
Normal Operating Mode
VTRM (V)
Output
Output
CC.
L
V
consumes less
Sharing Mode
•
•
•
Floating or connected to GND
High impedance
Invalid*
Invalid*
High impedance
Disable Mode
VTRM
+5V input/+3.3V output
+3.3V input/+3.3V input
+3.7V input/+3.3V output
remains
CC
DISABLE MODE
GND or floating
CC
(or
+1.65 to +3.6
+1.65 to +3.6
+1.65 to +3.6
+1.65 to +3.6
L
in UCSP with USB Detect
V
L
(V)
D+ and D- are the USB-side transmitter I/O connec-
tions, and are ESD protected to ±15kV using the
Human Body Model, ±10kV using IEC 1000-4-2 Air-
Gap Discharge, and ±8kV using IEC 1000-4-2 Contact
Discharge, making the MAX3344E/MAX3345E ideal for
applications where a robust transmitter is required. A
23.7Ω resistor is required on D+ and D- for normal
operation (see the External Resistors section).
USB specification 2.0 requires a 1.5kΩ pullup resistor
on D+ for full-speed (12Mbps) operation. Controlled by
enumerate (ENUM), the MAX3344E/MAX3345E provide
this internal 1.5kΩ resistor. Drive ENUM high to connect
the pullup resistor from D+ to VTRM. Drive ENUM low to
disconnect the pullup resistor from D+ to VTRM.
The MAX3344E/MAX3345E system-side inputs are VPO
and VMO. Data comes into the MAX3344E/MAX3345E
through VPO and VMO. VPO and VMO operate either
differentially with VPO as the positive terminal and VMO
as the negative terminal, or single ended with VPO as
the data input (see the MODE section).
Normal mode
Battery supply
Voltage regulator supply
Sharing mode
Disable mode
CONFIGURATION
•
•
•
+1.65V to +3.6V input
High impedance
High impedance for OE = Low
High for OE = High
Undefined**
High impedance
Floating or connected to GND
< +3.6V (MAX3344E)
< +1.0V (MAX3345E)
VPO/VMO, VPI/VMI, and
SHARING MODE
Device Control
NOTES
Table 2
Table 2
D+ and D-
—
—
—
ENUM
OE
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