19-2844; Rev 1; 8/03
±±5ꢀk EꢁDꢂ-rotected UꢁB OnꢂtheꢂGo
Charge -ump and Comparators in UCꢁ-
General Description
Features
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.
ꢀ Guaranteed 8mA (min) V
Charge-Pump Output
BUS
ꢀ ±±15V ꢀSꢁ Prꢂteꢃtiꢂn ꢂn VBUS and Iꢁ_IN
ꢀ Up tꢂ +6.0V Baꢃ5drive Capability fꢂr VBUS
ꢀ +2.6V tꢂ +1.1V Operating Vꢂltage Range
ꢀ VL Operates ꢁꢂwn tꢂ +±.61V
The MAX3355E’s internal charge pump supplies V
BUS
ꢀ Guaranteed VBUS Input Impedanꢃe When Nꢂt
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
ꢁriven
ꢀ Autꢂmatiꢃ CLOAꢁ ꢁeteꢃtiꢂn
ꢀ Cꢂmparatꢂrs fꢂr Hꢂst Negꢂtiatiꢂn Prꢂtꢂꢃꢂl
ꢀ Iꢁ_IN ꢁeteꢃtiꢂn
V
. The V
status outputs are used during negoti-
BUS
BUS
ation for the USB according to the session request pro-
tocol (SRP) and host negotiation protocol (HNP).
ꢀ Available in 4 x 3 UCSP ꢂr ±4-Pin TSSOP Paꢃ5age
The MAX3355E operates with logic supply voltages
(V ) as low as 1.65V, ensuring compatibility with low-
L
voltage ASICs. The device also features a logic-selec-
table 1µA shutdown mode.
Ordering Information
The MAX3355E has built-in 15ꢀV ESD-protection cir-
PIN-
PACKAGꢀ
TOP
MARK
cuitry to protect the V
and ID_IN pins. The device is
BUS
PART
TꢀMP RANGꢀ
available in a miniature 4 x 3 chip-scale pacꢀage
(UCSP), as well as a 14-pin TSSOP pacꢀage, and is
specified for operation over the -40°C to +85°C extended
temperature range.
MAX3355EEBC-T
MAX3355EEUD
-40°C to +85°C 4 x 3 UCSP
-40°C to +85°C 14 TSSOP
ABE
—
Applications
MP3 Players
Pin Configurations appear at end of data sheet.
Cell Phones
PDAs
Digital Cameras
Functional Diagram
V
CC
C+ C-
CURRENT
SOURCE
V
CC
LOGIC SUPPLY
V
L
MAX3355E
+1.65V TO V
CC
ESD
CHARGE
PUMP
ON/OFF
V
BUS
OFFVBUS
V
BUS
SHDN
5V AT 8mA
40k TO
100k
LEVEL
SHIFTER
STATUS1
STATUS2
ID_OUT
STATUS1
STATUS2
GND
V
BUS
GND
ID
COMPARATORS
DUAL-ROLE
ASIC
ID_IN
ESD
D+
D-
USB
XCVR
________________________________________________________________ Maxim Integrated Products
±
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.