MAX3346EEUD+ Maxim Integrated Products, MAX3346EEUD+ Datasheet - Page 7

• Manufacturer Part Number: MAX3346EEUD+
• Description: IC USB TXRX ESD PROTECT 14TSSOP
• Manufacturer: Maxim Integrated Products
• Type: Transceiverr

Specifications of MAX3346EEUD+

• Number Of Drivers/receivers: 1/1
• Protocol: USB 2.0
• Voltage - Supply: 4 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 14-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX3346E is a bidirectional transceiver that con-
verts single-ended or differential logic-level signals to
differential USB signals, and converts differential USB
signals to single-ended or differential logic-level sig-
nals. The MAX3346E includes an internal 1.5kΩ pullup
resistor that can be connected to either D+ or D- for
full-speed or low-speed operation (see the Functional
Diagram). The MAX3346E can be energized without
concern about power-supply sequencing. Additionally,
the USB I/O, D+ and D-, are ESD protected to ±15kV.
The MAX3346E can get its USB-side power, V
TSSOP
10
11
12
13
14
—
7
8
9
PIN
B3, C3
UCSP
B2
A2
A3
A4
B4
C4
D4
D3
_______________________________________________________________________________________
±15kV ESD-Protected USB Transceiver
Detailed Description
SPEED
NAME
VTRM
SUSP
GND
V CC
D+
V L
D-
—
OUTPUT
INPUT/
Output
Output
Power
Power
Power
Power
Input/
Input/
Input
Input
—
Suspend Input. Drive SUSP low for normal operation. Force SUSP high for low-
power state. In low-power state RCV is low, D+/D- are high impedance if OE is
floating, and VP/VM are active outputs.
USB Transmission Speed Select Input. If SPEED is forced high, full speed
(12Mbps) is selected and the internal 1.5kΩ pullup resistor is connected to D+.
If SPEED is forced low, low speed (1.5Mbps) is selected and the internal 1.5kΩ
pullup resistor is connected to D-.
USB-Side Power-Supply Input. Connect V
Bypass V
Ground
USB Differential Data Input/Output. Connect to the USB’s D- signal through a
24.3Ω ±1% resistor.
USB Differential Data Input/Output. Connect to the USB’s D+ signal through a
24.3Ω ±1% resistor.
Regulated Output Voltage. 3.3V output derived from the V
VTRM to GND with a 1µF (or more) low-ESR capacitor, such as ceramic or
plastic film types.
System-Side Power-Supply Input. Connect to the system’s logic-level power
supply, 1.65V to 3.6V. Bypass to GND with a 0.1µF capacitor.
Not populated. The solder sphere is omitted from these locations (see the
Package Information).
CC
CC
,
to GND with a 1µF ceramic capacitor.
directly from the USB connection, and can operate with
system-side power, V
USB physical layer specifications. The MAX3346E sup-
ports both full-speed (12Mbps) and low-speed
(1.5Mbps), USB specification 1.1 operation.
The MAX3346E has an enumerate feature that works
when power is on. Driving ENUM low disconnects the
internal 1.5kΩ pullup resistor from both D+ and D-,
reenumerating the USB. This is useful if changes in com-
munication protocol are required while power is applied,
and while the USB cable is connected.
Pin Description (continued)
FUNCTION
CC
L
, down to 1.65V and still meet the
to the incoming USB power supply.
CC
in UCSP
input. Bypass
7