MAX3355E Datasheet, PDF (1/11 Pages) Maxim Integrated Products – +/-15kV ESD-Protected USB On-the-Go Charge Pump and Comparators in UCSP

19-2844; Rev 1; 8/03
±15kV ESD-Protected USB On-the-Go
Charge Pump and Comparators in UCSP
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
PDAs
MP3 Players
Digital Cameras
Features
o Guaranteed 8mA (min) V_BUS Charge-Pump Output
o ±15kV ESD Protection on V_BUS and ID_IN
o Up to +6.0V Backdrive Capability for V_BUS
o +2.6V to +5.5V Operating Voltage Range
o V_L Operates Down to +1.65V
o Guaranteed V_BUS Input Impedance When Not
Driven
o Automatic C_LOAD Detection
o Comparators for Host Negotiation Protocol
o ID_IN Detection
o Available in 4 x 3 UCSP or 14-Pin TSSOP Package
Ordering Information
PART
MAX3355EEBC-T
MAX3355EEUD
TEMP RANGE
PIN-
PACKAGE
-40°C to +85°C 4 x 3 UCSP
-40°C to +85°C 14 TSSOP
TOP
MARK
ABE
—
Pin Configurations appear at end of data sheet.
Functional Diagram
V_CC C+ C-
LOGIC SUPPLY
+1.65V TO V_CC
V_L
MAX3355E
CURRENT
V_{CC SOURCE}
ESD
OFFVBUS
ON/OFF
CHARGE
PUMP
V_BUS
V_BUS
SHDN
5V AT 8mA
40kΩ TO
STATUS1
STATUS2
LEVEL
SHIFTER
STATUS1
V_BUS
100kΩ
GND
STATUS2
COMPARATORS
GND
DUAL-ROLE
ASIC
ID_OUT
ID_IN
ID
ESD
USB
D+
XCVR
D-
________________________________________________________________ Maxim Integrated Products 1
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.