Datasheet

General Description
The MAX3355E integrates a charge pump and com-
parators to enable a system with an integrated USB on-
the-go (OTG) dual-role transceiver to function as a USB
OTG dual-role device. USB OTG facilitates the direct
connection of peripherals and mobile devices such as
PDAs, cellular phones, MP3 players, and digital cam-
eras to one another without a host PC.
The MAX3355E’s internal charge pump supplies V
BUS
power and signaling that is required by the transceiver as
defined in On-the-Go Supplement to the USB 2.0
Specification, Revision 1.0. The MAX3355E features ID
detection and internal comparators for monitoring
V
BUS
. The V
BUS
status outputs are used during negoti-
ation for the USB according to the session request pro-
tocol (SRP) and host negotiation protocol (HNP).
The MAX3355E operates with logic supply voltages
(V
L
) as low as 1.65V, ensuring compatibility with low-
voltage ASICs. The device also features a logic-selec-
table 1µA shutdown mode.
The MAX3355E has built-in ±15kV ESD-protection cir-
cuitry to protect the V
BUS
and ID_IN pins. The device is
available in a miniature 4 x 3 chip-scale package
(UCSP), as well as a 14-pin TSSOP package, and is
specified for operation over the -40°C to +85°C extended
temperature range.
Applications
Cell Phones MP3 Players
PDAs Digital Cameras
Features
Guaranteed 8mA (min) V
BUS
Charge-Pump Output
±15kV ESD Protection on V
BUS
and ID_IN
Up to +6.0V Backdrive Capability for V
BUS
+2.6V to +5.5V Operating Voltage Range
V
L
Operates Down to +1.65V
Guaranteed V
BUS
Input Impedance When Not
Driven
Automatic C
LOAD
Detection
Comparators for Host Negotiation Protocol
ID_IN Detection
Available in 4 x 3 UCSP or 14-Pin TSSOP Package
MAX3355E
±15kV ESD-Protected USB On-the-Go
Charge Pump and Comparators in UCSP
________________________________________________________________ Maxim Integrated Products 1
PART TEMP RANGE
PIN-
PACKAGE
TOP
MARK
MAX3355EEBC-T -40°C to +85°C 4 x 3 UCSP ABE
MAX3355EEUD -40°C to +85°C 14 TSSOP
Ordering Information
CHARGE
PUMP
5V AT 8mA
40k TO
100k
STATUS2
STATUS1
ON/OFF
MAX3355E
V
BUS
COMPARATORS
CURRENT
SOURCE
V
BUS
V
BUS
GND
USB CONNECTOR
ID_IN
GND
ID
D+
D-
V
CC
V
L
C+
V
CC
C-
ESD
LEVEL
SHIFTER
OFFVBUS
SHDN
STATUS1
STATUS2
ID_OUT
DUAL-ROLE
ASIC
LOGIC SUPPLY
+1.65V TO V
CC
USB
XCVR
ESD
Functional Diagram
19-2844; Rev 1; 8/03
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Pin Configurations appear at end of data sheet.

Summary of content (11 pages)