MAX3450EEUD+ Maxim Integrated Products, MAX3450EEUD+ Datasheet - Page 8

• Manufacturer Part Number: MAX3450EEUD+
• Description: TXRX USB +/-15KV ESD 14-TSSOP
• Manufacturer: Maxim Integrated Products
• Type: Transceiverr

Specifications of MAX3450EEUD+

• Number Of Drivers/receivers: 1/1
• Protocol: USB 2.0
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 14-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

±15kV ESD-Protected USB Transceivers
ages (V
protection protects the D+ and D- USB I/O ports.
The MAX3451E features an enumerate function provid-
ing an internal 1.5kΩ pullup resistor to V
merate function disconnects the 1.5kΩ pullup resistor,
allowing the MAX3451E to simulate a bus disconnect
while powered and connected to the USB cable. The
MAX3450E is pin-for-pin compatible with Micrel’s
MIC2550A. The MAX3452E features a BD output that
asserts high if V
low if V
MAX3452E require external pullup resistors from either
D+ or D- to V
Connect V
(Table 1). Connect V
Connect V
the MAX3450E and MAX3451E can derive power from
Table 1. Power-Supply Configurations
Table 2. Disable-Mode and Sharing-Mode Connections
* High impedance or low
** High or low
8
SPD, SUS, OE, ENUM
INPUTS/OUTPUTS
_______________________________________________________________________________________
BD (MAX3452E)
GND or floating
(MAX3451E)
+4.0 to +5.5
+3.1 to +4.5
+3.0 to +3.6
+3.0 to +5.5
V
VP and VM
D+ and D-
V
BUS
L
BUS
) from +1.65V to +3.6V. Integrated ±15kV ESD
BUS
RCV
V
BUS
/V
L
L
TRM
(V)
is less than +3.6V. The MAX3450E and
TRM
and V
to a +4.0V to +5.5V supply. Alternatively,
Applications Information
BUS
to set the bus speed.
Power-Supply Configurations
BUS
is greater than +4.0V. BD asserts
L
• +5V input/+3.3V output
• +3.3V input/+3.3V input (MAX3450E and MAX3451E)
• +3.7V input/+3.3V output (MAX3450E and MAX3451E)
Floating or connected to GND
High impedance
Invalid*
Invalid*
High impedance
Invalid*
to a +1.65V to +3.6V supply.
+3.0 to +3.6 output
+3.0 to +3.6 output
+3.0 to +3.6 input
to system power supplies
V
Output
Normal Operating Mode
TRM
V
BUS
(V)
DISABLE MODE
TRM
. The enu-
GND or floating
+1.65 to +3.6
+1.65 to +3.6
+1.65 to +3.6
+1.65 to +3.6
V
L
(V)
a single Li+ battery. Connect the battery to V
remains above +3.0V for V
Additionally, the MAX3450E and MAX3451E can derive
power from a +3.3V ±10% voltage regulator. Connect
V
V
linear regulator in this configuration.
Connect V
unconnected or connect to GND. D+ and D- enter a tri-
state mode and V
less than 20µA of supply current. D+ and D- withstand
external signals up to +5.5V in disable mode (Table 2).
Connect V
(or V
D+ 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
external signals up to +5.5V in sharing mode (Table 2).
BUS
BUS
BUS
Voltage regulator supply
and V
no longer consumes current to power the internal
CONFIGURATION
Battery supply
Sharing mode
and V
Disable mode
Normal mode
BUS
L
TRM
to a system power supply and leave V
• Floating or connected to GND (MAX3450E
• < +3.6V (MAX3452E)
+1.65V to +3.6V input
High impedance
High impedance for OE = low
High for OE = high
Undefined**
High impedance
Low
to a system power supply and leave V
and MAX3451)
TRM
to an external +3.3V voltage regulator.
BUS
) unconnected or connect to GND.
(or V
BUS
SHARING MODE
BUS
as low as +3.1V.
MAX3450E, MAX3451E
MAX3450E, MAX3451E
and V
NOTES
Table 2
Table 2
L
TRM
Sharing Mode
Disable Mode
consumes less
—
) consumes
BUS
. V
TRM
BUS
L