MAX14550E Maxim, MAX14550E Datasheet - Page 12

• Manufacturer Part Number: MAX14550E
• Description: The MAX14550E is a USB Hi-Speed analog switch with a USB host charger (dedicated charger) identification circuit
• Manufacturer: Maxim

ESD-protection structures are incorporated on all pins
to protect against electrostatic discharges up to Q2kV
(Human Body Model) encountered during handling and
assembly. DP and DM are further protected against ESD
USB Host Charger Identification Analog Switch
Table 2. Tested Portable Device
iPod, iPhone, iPod touch, iPod classic, and iPod nano are registered trademarks of Apple, Inc.
BlackBerry is a registered trademark/servicemark of Research In Motion Limited.
QUALCOMM is a registered trademark of QUALCOMM Incorporated.
12
MANUFACTURER/
SPECIFICATION
USB-IF Standard
China Standard
Motorola
Apple
HTC
RIM
QUALCOMM®-
All phones with
iPod® and some
and iPhone 3G
based phones
BlackBerry®
iPod touch®
Extended ESD Protection
mini-USB
iPhones®
DEVICE
—
—
(Human Body Model)
Some models look for
Resistor to GND on
Resistor-divider on
IDENTIFICATION
Shorted D+/D-
Shorted D+/D-
shorted D+/D-
D+ and D-
ID line
None
None
Immediately draws 500mA when 5V is
attached to V
USB FS/HS configuration: draws
< 500mA
D+/D- voltage detection: <1A
USB FS/HS configuration: draws
< 500mA. Follows CEA-936-A
specification, which is the only known
company to use this specification.
USB FS/HS configuration: draws
< 500mA. Some models look for
shorted D+/D- with a pullup to 2.7V for
dedicated charger.
Immediately draws 500mA when 5V is
attached to V
Device uses a specific method
(voltages and timing well defined)
Method not defined
up to Q15kV (Human Body Model) without damage. The
ESD structures withstand high ESD both in normal opera-
tion and when the device is powered down. After an ESD
event, the device continues to function without latchup
(Figures 5a and 5b).
DETECTION METHOD/COMMENTS
BUS
BUS
3GS; iPod classic®;
4th, 5th generation);
iPhone 2G, 3G, and
Depends on model
Depends on model
Depends on model
touch (1st and 2nd
models with micro-
LG and Samsung
iPod nano® (3rd,
iPod video; iPod
2009 and newer
USB connector
and iPod mini
generations);
MAX14550E
Full support
SUPPORT