MAX14581EWC+T Maxim Integrated, MAX14581EWC+T Datasheet - Page 15

• Manufacturer Part Number: MAX14581EWC+T
• Description: USB Interface IC 3/5 Wire Full Speed USB Trnsvr
• Manufacturer: Maxim Integrated

Specifications of MAX14581EWC+T

• Rohs: yes

USB Transceivers, with Low VIO 3/5-Wire Interface
Table 2b. Disable Mode and Sharing Mode Connection, 5-Wire Interface
The MAX14581 uses DAT and SE0 to drive data or a
single-ended zero onto the D+/D- lines. When OE is low,
SE0 is an input and functions as a single-ended zero
driver. When SE0 is high, both D+ and D- are driven low.
When SE0 is driven low, the D+/D- outputs are controlled
by DAT.
DAT is used to send data on D+/D- when both OE and
SE0 are low. When DAT is high, D+ is driven high and
D- is driven low. When DAT is low, D+ is driven low and
D- is driven high.
In receive mode (OE = high), DAT is the output of the
differential receiver connected to D+ and D- if SUS = 0
or the putput of the D+ single-ended comparator if SUS
= OE = V
D- are low.
In USB mode, the MAX14582 implements a full-speed
(12Mbps) USB interface on D+ and D-, with enumerate
and suspend functions. A differential USB receiver pres-
ents the USB state as a logic-level output RCV
VP/VM are outputs of single-ended USB receivers when
OE is high, allowing detection of single-ended zero (SE0)
events. When OE is low, VP and VM serve as inputs to
the USB transmitter. Drive suspend input SUS logic-high
to force the MAX14581/MAX14582 into a suspend mode
and disable the differential USB receiver
The MAX14581 USB detection function indicates that
V
output (BD) monitors V
and V
V
BUS
TH_VBUS
is present. The MAX14581 push-pull bus detection
L
are present. BD asserts low if V
Industry’s Smallest and Lowest (V
L
. SE0 only goes active-high when both D+ and
and enters sharing mode.
INPUTS/OUTPUTS
D+ and D-
VM, VP
V
SUS
RCV
OE
BUS
V
L
BUS
, and asserts high when V
USB Detection (MAX14581)
3-Wire Interface
5-Wire Interface
Control Signals
BUS
(Table
Unconnected or connected to GND
Unconnected or connected to GND
Unconnected or connected to GND
is less than
(Table
6).
DISABLE MODE
High impedance
High impedance
BUS
3.0V to 5.5V
6).
Low
OE controls the direction of communication when V
V
For the MAX14581 when OE is low, DAT and SE0 operate
as logic inputs and D+/D - are outputs. When OE is high,
DAT and SE0 operate as logic outputs and D+/D- are
inputs.
For the MAX14582 when OE is logic-low, VP and VM
operate as logic inputs, and D+/D- are outputs. When OE
is logic-high, VP and VM operate as logic outputs, and
D+/D are inputs. RCV is the output of the differential USB
receiver connected to D+/D-, and is not affected by the
OE logic level.
SUS determines whether the MAX14581/MAX14582
operate in normal mode or in suspend mode. Drive SUS
low for normal operation. Drive SUS high to enable sus-
pend mode. In suspend mode, the single-ended receiv-
ers (D+/D-) are active to detect a wake-up event. Supply
current decreases to less than 18FA (typ) from V
suspend mode.
The devices can transmit data on D+ and D- while in
suspend mode. This function is used to signal a remote
wake-up event.
A 1.5kI pullup resistor on D+ is used to indicate full-
speed (12Mbps) operation. Drive ENUM high to connect
the internal pullup resistor from D+ to V
low to disconnect the internal pullup resistor from D+ to
V
D+ and D- are bidirectional signals and are ESD pro-
tected to ±15kV (HBM). OE controls the direction of D+
and D- when in USB normal mode.
BUS
TRM
.
MAX14581/MAX14582
are both present.
Unconnected or connected to GND
5kI pullup resistor to V
L
1.2V to 3.6V input
SHARING MODE
) Full-Speed
High impedance
High or low
High or low
Low
TRM
. Drive ENUM
D+ and D-
L
BUS
ENUM
L
SUS
and
OE
15
in