MAX3349EETE+ Maxim Integrated Products, MAX3349EETE+ Datasheet - Page 7

• Manufacturer Part Number: MAX3349EETE+
• Description: IC TXRX USB 2.0 FS 16-TQFN
• Manufacturer: Maxim Integrated Products
• Type: Transceiverr

Specifications of MAX3349EETE+

• Number Of Drivers/receivers: 1/1
• Protocol: USB 2.0
• Voltage - Supply: 4 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 16-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

UCSP
A1
A2
A3
A4
B1
B2
B3
B4
C1
C2
C3
C4
D1
D2
D3
D4
—
PIN
TQFN
USB 2.0 Full-Speed Transceiver with UART
EP
15
16
14
13
12
11
10
1
2
3
4
5
6
8
7
9
_______________________________________________________________________________________
OUTPUT
OUTPUT
OUTPUT
POWER
POWER
POWER
POWER
POWER
INPUT
INPUT
INPUT
INPUT
TYPE
I/O
I/O
I/O
I/O
—
NAME
ENUM
V
V
V
GND
RCV
SUS
UART
BD
VM
OE
D+
RX
TX
V
VP
TRM
BUS
EP
D-
L
UART Supply Voltage. V
Connect a regulated voltage between +2.7V and +3.3V to V
GND with a 0.1µF ceramic capacitor.
UART Receive Output. In UART mode, RX is a level-shifted output that expresses
the logic state of D+.
UART Transmit Input. In UART mode, D- follows the logic state on TX.
USB Detect Output. When V
indicate that the MAX3349E is connected to a USB host. The MAX3349E operates in
USB mode when BD is logic-high, and operates in UART mode when BD is logic-
low.
Digital Logic Supply. Connect a +1.4V to +2.75V supply to V
with a 0.1µF or larger ceramic capacitor.
Receiver Output/Driver Input. VM functions as a receiver output when OE = V
follows the logic state of D- when receiving. VM functions as a driver input when OE
= GND (Tables 2 and 3).
Receiver Output/Driver Input. VP functions as a receiver output when OE = V
follows the logic state of D+ when receiving. VP functions as a driver input when OE
= GND (Tables 2 and 3).
Differential Receiver Output. In USB mode, RCV is the output of the USB differential
receiver (Table 3).
Internal Regulator Output. V
GND with a 1µF ceramic capacitor. V
external circuitry from V
Enumerate Input. Drive ENUM to V
V
pullup resistor. ENUM has no effect when the device is in UART mode.
Suspend Input. Drive SUS low for normal operation. Drive SUS high to force the
MAX3349E into suspend mode.
Output Enable. Drive OE low to set VP/VM to transmitter inputs in USB mode. Drive
OE high to set VP/VM to receiver outputs in USB mode. OE has no effect when the
device is in UART mode.
USB Supply Voltage. V
USB mode. Bypass V
USB Differential Data Input/Output. Connect D+ directly to the USB connector.
USB Differential Data Input/Output. Connect D- directly to the USB connector.
Ground
Exposed Paddle. Connect exposed paddle to GND.
TRM
(when V
BUS
is present). Drive ENUM to GND to disconnect the internal 1.5kΩ
BUS
BUS
TRM
UART
to GND with a 0.1µF ceramic capacitor.
provides power to the internal linear regulator when in
.
TRM
BUS
powers the internal UART transmitter and receiver.
provides a regulated +3.3V output. Bypass V
exceeds the V
Multiplexing Mode
L
to connect the internal 1.5kΩ resistor from D+ to
FUNCTION
TRM
draws power from V
TH-BUS
threshold, BD is logic-high to
Pin Description
UART
L
. Bypass V
BUS
. Bypass V
. Do not power
L
to GND
UART
L
L
TRM
. VP
. VM
to
to
7