MAX14640ETA+T ,USB Host Adapter EmulatorsFeaturesThe MAX14640–MAX14644/MAX14651 are next-generation ● Improved Charger InteroperabilityUSB 2 ..
MAX14641ETA+ ,USB Host Adapter EmulatorsElectrical Characteristics(V = 3.0V to 5.5V, T = -40NC to +85NC, unless otherwise noted. Typical va ..
MAX1464AAI+ ,Low-Power, Low-Noise Multichannel Sensor Signal ProcessorElectrical Characteristics(V = V = 4.5V to 5.5V, V = V = 0V, f = 4.0MHz, T = T to T . Typical value ..
MAX14654EWC+T ,High-Current Overvoltage Protector with Adjustable OVLOApplications● Smartphones● Tablet PCs● Mobile Internet DevicesTypical Application CircuitPOWERIN OU ..
MAX146ACAP ,+2.7Low-Power, 8-Channel, Serial 12-Bit ADCsGeneral Description ________
MAX146AEAP+ ,+2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCsELECTRICAL CHARACTERISTICS(V = +2.7V to +3.6V (MAX146); V = +2.7V to +5.25V (MAX147); COM = 0; f = ..
MAX4052AESE+T ,Low-Voltage, CMOS Analog Multiplexers/SwitchesMAX4051/A, MAX4052/A, MAX4053/A19-0463; Rev 2; 10/05Low-Voltage, CMOS AnalogMultiplexers/Switches
MAX4052CEE ,Low-Voltage / CMOS Analog Multiplexers/SwitchesFeaturesThe MAX4051/MAX4052/MAX4053 and MAX4051A/' Pin Compatible with Industry-Standard MAX4052A/M ..
MAX4052CPE ,Low-Voltage / CMOS Analog Multiplexers/SwitchesELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = +4.5V to +5.5V, V- = -4.5V to -5.5V, T = T to T , unl ..
MAX4052CSE ,Low-Voltage / CMOS Analog Multiplexers/SwitchesELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = +4.5V to +5.5V, V- = -4.5V to -5.5V, T = T to T , unl ..
MAX4052CSE ,Low-Voltage / CMOS Analog Multiplexers/SwitchesMAX4051/A, MAX4052/A, MAX4053/A19-0463; Rev 0; 1/96Low-Voltage, CMOS AnalogMultiplexers/Switches___ ..
MAX4052CSE+ ,Low-Voltage, CMOS Analog Multiplexers/SwitchesELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = +4.5V to +5.5V, V- = -4.5V to -5.5V, T = T to T , unl ..
MAX14640ETA+-MAX14640ETA+T-MAX14641ETA+
USB Host Adapter Emulators
General DescriptionThe MAX14640–MAX14644/MAX14651 are next-generation
USB 2.0 host charger adapter emulators that combine
USB Hi-Speed analog switches with a USB adapter
emulator circuit.
The MAX14640/MAX14651 feature an I2C interface to fully
configure the charging behavior with different address
options. The MAX14641–MAX14644 are controlled by
two GPIO inputs (CB1/CB0) and support USB data and
automatic charger mode. In charging downstream port
(CDP) pass-through mode, the devices emulate the
CDP function while supporting normal USB traffic. The
MAX14641/MAX14642/MAX14643 have a CEN output
for an active-high CLS enable input, and the MAX14644
has a CEN output for an active-low CLS enable input to
restart the peripheral connected to the USB host.
The MAX14640–MAX14644/MAX14651 feature 2A high-
current autodetect mode. The MAX14641 features 1A
high-current forced mode instead of regular DCP mode.
The MAX14640/MAX14651 can be configured through I2C
to support various dedicated charger modes such as DCP,
Apple® 1A/2A forced, or Apple 1A/2A automatic mode.
All the devices support CDP and standard downstream port
(SDP) charging while in the active state (S0) and support
the dedicated charging port (DCP) charging while in the
standby state (S3/S4/S5). All devices support low-speed
remote wake-up by monitoring DM, and the MAX14642
also supports remote wake-up in sleep mode (S3).
The MAX14640–MAX14644/MAX14651 are available in an
8-pin (2mm x 2mm) TDFN-EP package and are specified
over the -40NC to +85NC extended temperature range.
Beneits and Features●Improved Charger InteroperabilityUSB (CDP) EmulationSmart CDPFoolproof CDPMeets New USB Battery Charging (BC) Revision 1.2 SpeciicationBackward-Compatible with Previous USB BC RevisionsMeets China YD/T1591-2009 Charging SpeciicationSupports Standby-Mode Charging for Apple BC
Revision 1.2 Compatible Devices●Provide Greater Application FlexibilityI2C Controls Multiple Modes (MAX14640/MAX14651)CB0 and CB1 Pins Control Multiple Automatic and
Manual Charger States●Enhance Performance with High Level of Integrated FeaturesSupports Remote WakeupLow-Capacitance USB 2.0 Hi-Speed Switch to
Change Charging ModesAutomatic Current-Limit Switch Control±15kV ESD Protection on DP/DM●Minimize PCB Area2mm x 2mm, 8-Pin TDFN Package
Applications●Laptop/Desktop Computers●USB Hubs●Universal Chargers Including iPod®/iPhone®/iPad®
Ordering Information and Typical Operating Circuit appear
at end of data sheet.
Selector GuideApple, iPad, iPod, and iPhone are registered trademarks of Apple, Inc.
MAX14640–MAX14644/MAX14651USB Host Adapter EmulatorsPART NUMBERI/O MODECEN POLARITYREMOTE WAKE-UP IN AMFORCED CHARGER MODEBIAS IN FM
MAX14640I2C (0x35)N/AOptionalYesDP/DM short
MAX14641GPIOCENNoNoApple 1A
MAX14642GPIOCENYesYesDP/DM short
MAX14643GPIOCENNoYesDP/DM short
MAX14644GPIOCENNoYesDP/DM short
MAX14651I2C (0x15)N/AOptionalYesDP/DM short
(All voltages referenced to GND.)
VCC, TDP, TDM, DP, DM, SDA, SCL,
CB0, CB1, CEN, CEN, INT ..................................-0.3V to +6V
Continuous Current into Any Terminal ............................Q30mA
Continuous Power Dissipation (TA = +70NC)
TDFN (derate 11.9mW/NC above +70NC) .................953.5mW
Operating Temperature Range ..........................-40NC to +85NC
Junction Temperature .....................................................+150NC
Storage Temperature Range ............................-65NC to +150NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
TDFN
Junction-to-Ambient Thermal Resistance (BJA) .......83.9NC/W
Junction-to-Case Thermal Resistance (BJC) ...............37NC/W
Absolute Maximum RatingsNote 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Package Thermal Characteristics(Note 1)
Electrical Characteristics(VCC = 3.0V to 5.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VCC = 5.0V and TA = +25NC.) (Note 2)
MAX14640–MAX14644/MAX14651USB Host Adapter Emulators
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
POWER SUPPLY
VCC Supply VoltageVCCCB0 = high3.05.5VCB0 = low (Note 3)4.755.25
VCC Supply CurrentICC
MAX14641–
MAX14644
CB1 = CB0 = low (AM2
mode)200
CB1 = CB0 = high (CM
mode)100
CB1 = low, CB0 = high
(PM mode)20
MAX14640/
MAX14651
MODE_SEL[2:0] = 000
(AM2 mode)200
MODE_SEL[2:0] = 011
(CM mode)100
MODE_SEL[2:0] = 001
(PM mode)20
POR DelaytPOR50ms
ANALOG SWITCHES (DP, DM, TDP, TDM)
Analog Signal RangeVDP, VDM(Note 4)0VCCV
TDP/TDM On Resistance RONVIN = 0V to VCC, IIN = 10mA3.56.5I
TDP/TDM On-Resistance
Matching Between ChannelsDRONVCC = 5.0V, IIN = 10mA, VIN = 0.4V0.1I
TDP/TDM On-Resistance
FlatnessRFLATVCC = 5.0V, IIN = 10mA, VIN = 0V to VCC0.1I
Electrical Characteristics (continued)(VCC = 3.0V to 5.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VCC = 5.0V and TA = +25NC.) (Note 2)
MAX14640–MAX14644/MAX14651USB Host Adapter Emulators
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Off Leakage CurrentICOM(OFF)VCC = 3.6V, VDP = VDM = 0.3V to 3.3V,
VTDP = VTDM = 3.3V to 0.3V-11.5nA+1µA
On Leakage CurrentICOM(ON)VCC = 3.6V, VDP = VDM = 0.3V to 3.3V-190nA+1µA
DYNAMIC PERFORMANCE
Turn-On TimetONVTDP or VTDM = 1.5V, RL = 300I,
CL = 35pF, Figure 1 (Note 4)20Fs
Turn-Off TimetOFFVTDP or VTDM = 1.5V, RL = 300I,
CL = 35pF, Figure 1 (Note 4)1Fs
TDP/TDM Propagation DelaytPHL, tPLHRL = RS = 50I, DP and DM connected to
TDP and TDM, Figure 260ps
DP/DM Output SkewtSKEWRL = RS = 50I, DP and DM connected to
TDP and TDM, Figure 240ps
DP/DM On-Capacitance
(Connected to TDP, TDM)COFFf = 240MHz, VBIAS = 0V, VIN = 500mVP-P5pF
BandwidthBWRL = RS = 50I, Figure 31000MHz
Off-IsolationVISOVIN = 0dBm, RL = RS = 50I, f = 250MHz,
Figure 3-20dB
CrosstalkVCTVIN = 0dBm, RL = RS = 50I, f = 250MHz,
Figure 3-25dB
DCP INTERNAL RESISTORS
DP/DM Short PulldownRPD320500700kI
RP1/RP2 RatioRTRP1.4851.51.515
RP1 + RP2 ResistanceRRP92125158.5kI
RM1/RM2 RatioRTRM0.8440.850.864
RM1 + RM2 ResistanceRRM6893118kI
RSS1/RSS2 RatioRTRSS2.933.1
RSS1 + RSS2 ResistanceRRSS304060kI
CDP INTERNAL RESISTORS
DP Pulldown ResistorRDP_CDPCDP mode14.2519.5324.80kI
DM Pulldown ResistorRDM_CDPCDP mode14.2519.5324.8kI
CDP HIGH-SPEED COMPARATORS
Threshold VoltageVTH_CDP100161205mV
CDP LOW-SPEED COMPARATORS
VDM_SRC VoltageVDM_SRCILOAD = 0 to 200FA0.50.7V
Note 2: All units are production tested at TA = +25NC. Specifications over temperature are guaranteed by design.
Note 3: The MAX1464_ is operational from 3.0V to 5.5V. However, in order for the valid Apple resistor-divider network to function,
VCC must stay within the 4.75V to 5.25V range.
Note 4: Guaranteed by design, not production tested.
Note 5: Guaranteed by design.
Electrical Characteristics (continued)(VCC = 3.0V to 5.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VCC = 5.0V and TA = +25NC.) (Note 2)
MAX14640–MAX14644/MAX14651USB Host Adapter Emulators
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
VDP_REF VoltageVDP_REF0.250.4V
VLGC VoltageVLGC0.82.0V
IDP_SINK CurrentIDP_SINKVDP = 0.15V to 3.6V50150FA
LOGIC INPUTS (CB0, CB1, SDA, SCL)
Input Logic High VoltageVIH1.4V
Input Logic Low VoltageVIL0.4V
Input Leakage CurrentIIN0V P VIN P VIL or VIH P VIN P VCC,
VCC = 5.5V-1+1FA
CB0/CB1 Debounce TimetDEB_CB_250Fs
OPEN-DRAIN LOGIC OUTPUTS (SDA, INT, CEN, CEN)
INT, SDA, CEN Output Low
VoltageVOLOutput asserted, ISINK = 4mA0.4V
INT, SDA, CEN Output Leakage
CurrentIOHOutput not asserted, VCC = VOUT = 5.5V1FA
CEN, INT, Output High VoltageVOHOutput asserted, ISOURCE = 4mAVCC - 0.4V
CEN, INT, Output Leakage CurrentIOLOutput not asserted, VCC = 5.5V, VCEN = 0V1FA
VBUS Toggle Time AccuracytVBTQ10%
I2C TIMING CHARACTERISTICS (SEE FIGURE 4)
I2C Maximum Clock FrequencyfSCL400kHz
Bus Free Time Between STOP
and START ConditionstBUF1.3Fs
START Condition Setup TimetSU:STA0.6Fs
Repeated START Condition
Setup TimetSU:STA70% of SCL to 70% of SDA0.6Fs
START Condition Hold TimetHD:STA30% of SDA to 70% of SCL0.6Fs
STOP Condition Setup TimetSU:STO70% of SCL to 30% of SDA0.6Fs
Clock Low PeriodtLOW30% to 30%1.3Fs
Clock High PeriodtHIGH70% to 70%0.6Fs
Data Valid to SCL Rise TimetSU:DATWrite setup time100ns
Data Hold Time to SCL FalltHD:DATWrite hold time100ns
PROTECTION SPECIFICATIONS
ESD ProtectionVESDHuman Body ModelDP and DM pinsQ15kVAll other pinsQ2
Test Circuits/Timing DiagramsFigure 1. Switching Time
MAX14640–MAX14644/MAX14651USB Host Adapter Emulators
tr < 5ns
tf < 5ns
50%
VIL
LOGIC
INPUT
GND
CB0
CB1
VIN
VIH
tOFF
TD_
0.9 x V0UT0.9 x VOUT
tON
VOUT
SWITCH
OUTPUT
LOGIC
INPUT
IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
tON AND tOFF DO NOT INCLUDE THE CEN TOGGLE DELAY.
VCC
VCC
VOUT
MAX14641–MAX14644/
MAX14651
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
VOUT = VINRL
RL + RON
Figure 2. Propagation Delay and Output Skew
Test Circuits/Timing Diagrams (continued)MAX14640–MAX14644/MAX14651USB Host Adapter Emulators
IN+
IN-
CB0CB1
VCC
OUT+
OUT-
VIN+
VIN-
VOUT+
VOUT-
TDP
TDM
tPLHXtPHLX
tINRISE
tOUTRISEtOUTFALL
RISE-TIME PROPAGATION DELAY = tPLHX OR tPLHY
FALL-TIME PROPAGATION DELAY = tPHLX OR tPHLY
tSK = |tPLHX - tPLHY| OR |tPHLX - tPHLY|
50%
50%
50%
50%
90%
10%10%
90%
10%10%
50%
50%
50%
50%
tINFALL
90%
90%
tPHLYtPLHY
MAX14641–MAX14644
Figure 3. Bandwidth, Off-Isolation, and Crosstalk
Figure 4. I2C Timing Diagram. Note that tR and tF are per the I2C fast-mode specification.
Test Circuits/Timing Diagrams (continued)MAX14640–MAX14644/MAX14651USB Host Adapter Emulators
MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN TD_ AND "OFF" D_ TERMINAL ON EACH SWITCH.
CROSSTALK IS MEASURED FROM ONE CHANNEL TO THE OTHER CHANNEL.
VOUT
CB0VCC
GND
VCC
TDP
DP*
VIN
OFF-ISOLATION = 20log VOUT
VIN
CROSSTALK = 20log VOUT
VIN
CB1
NETWORK
ANALYZER
50Ω
50Ω50Ω
50Ω
MEASREF
0V OR VCC
*FOR CROSSTALK THIS PIN IS DM.
MAX14641–MAX14644
SDA
START CONDITION
(S)
START CONDITION
(S)
REPEATED START CONDITION
(Sr)
STOP CONDITION
(P)
SCL
tHD:STA
tSU:DATtSU:STA
tHD:DATtHD:STAtSU:STOtF
tBUF
tHIGHtLOWtRtF
Typical Operating Characteristics(VCC = +5V, TA = +25NC, unless otherwise noted.)
MAX14640–MAX14644/MAX14651USB Host Adapter Emulators
USB SWITCH ON-RESISTANCE
vs. SIGNAL VOLTAGE
MAX14640 toc01
VTDP/TDM (V)
ITD_= 10mA
VCC = 5.5V
VCC = 2.8V
USB SWITCH ON-RESISTANCE
vs. SIGNAL VOLTAGE
MAX14640 toc02
VTDP/TDM (V)
TA = +85°C
TA = +25°C
TA = -40°C
DP/DM SHORT ON-RESISTANCE
vs. SIGNAL VOLTAGE
MAX14640 toc03
VDP (V)
IDP = 10mA
VCC = 5.5V
VCC = 2.8V
DP/DM SHORT ON-RESISTANCE
vs. SIGNAL VOLTAGE
MAX14640 toc044321
VDP/DM (V)
VCC = 5.5V
ID_= 10mA
TA = -40°CTA = +25°C
TA = +85°C
TDP/DP LEAKAGE CURRENT
vs. TEMPERATURE
MAX14640 toc053510-15
TEMPERATURE (°C)
LEAKAGE CURRENT (nA)
VCC = 3.6V
VTDP = 3.3V
ON-LEAKAGE
OFF-LEAKAGE
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX14640 toc06
VCC (V)
ICC
(µA)
TA = -40°C
TA = +25°C
TA = +85°C
DEVICE IN CM
NO USB DEVICE
Typical Operating Characteristics(VCC = +5V, TA = +25NC, unless otherwise noted.)
MAX14640–MAX14644/MAX14651USB Host Adapter Emulators
EYE DIAGRAM
MAX14640 toc09
TIME (x 10*-9)s
DIFFERENTIAL SIGNAL (V)
AUTO DETECTION MODE
MAX14640 toc10
SDA
SCL
2V/div
200ms/div
MAX14640
FM TO AM2
SUPPLY CURRENT vs. LOGIC LEVEL
MAX14640 toc07
LOGIC LEVEL (V)
ICC
(µA)
VCC = 5.5V
GPIO VERSION
LOGIC-INPUT THRESHOLD
vs. SUPPLY VOLTAGE
MAX14640 toc08
VCC (V)
LOGIC-INPUT THRESHOLD (V)
CB_FALLING
CB_RISING
Pin Conigurations
Pin DescriptionMAX14640–MAX14644/MAX14651USB Host Adapter Emulators
PIN
NAMEFUNCTIONMAX14640/
MAX14651
MAX14641/
MAX14642/
MAX14643
MAX14644——INTOpen-Drain Interrupt Output. INT asserts low when interrupt occurs.1—CEN
nMOS Open-Drain Output. Pull up CEN to VCC by 10kΩ. CEN high enables the
current-limit switch and VBUS ON, and nMOS ON makes CEN low and the current-limit
switch OFF. When CB_ transitions from low to high or high to low, CEN is low for 1s
(typ).—1CEN
pMOS Open-Drain Output. Pull down CEN to GND by 10kΩ. CEN low enables the
current-limit switch and VBUS ON, and pMOS ON makes CEN high and the current-
limit switch OFF. When CB_ transitions from low to high or high to low, CEN is high
for 1s (typ).22DMUSB Connector D- Connection33DPUSB Connector D+ Connection——SCLI2C Serial-Clock Input44CB1Switch Control Input Bit 1. See the Switch Control Input Truth tables (Tables 2, 3, and 4).55VCCPower-Supply Input. Bypass VCC to GND with a 0.1µF ceramic capacitor as close
as possible to the device.66TDPHost USB Transceiver D+ Connection77TDMHost USB Transceiver D- Connection——SDAI2C Serial-Data Input/Output88CB0Switch Control Input Bit 0. See the Switch Control Input Truth tables (Tables 2, 3, and 4).——EP/
Exposed Pad and Ground. The exposed pad is the ground connection for the 45
SDATDPVCC
MAX14640
MAX14651
TDM
INTDPSCLDM
TDFN
(2mm x 2mm)TOP VIEW
CEN
*CONNECT THE EXPOSED PAD (EP/GND) TO THE GROUND PLANE.
*EP/GND45
CB0TDPVCC
MAX14641
MAX14642
MAX14643
TDMCB1DM
TDFN
(2mm x 2mm)*EP/GND
CEN45
CB0TDPVCC
MAX14644
TDMCB1DM
TDFN
(2mm x 2mm)*EP/GND
Functional DiagramMAX14640–MAX14644/MAX14651USB Host Adapter Emulators
CONTROL LOGIC
GND
TDM
TDP
VCC
CB0/
SDA**
CB1/
SCL**
POR
REF3
DM1
REF2
REF4
DM2
REF5
DM3
REF1
DEBOUNCE
CHARGING DOWNSTREAM PORT
EMULATION STATE MACHINE
DEBOUNCE
DEBOUNCE
CDP ENGINE
DEBOUNCE
DEBOUNCE
DEBOUNCE
DEBOUNCE
VDP_REF
VLGC
VLGC
*CEN IS FOR MAX14644 ONLY.
**SDA, SCL, AND INT ARE FOR MAX14640/MAX14651 ONLY.
CEN/
CEN*/
INT**
500kI
RM2
RP2
RP1
RM1
VCC
MAX14640–MAX14644/
MAX14651
RDM_CDP
VDM_SRC
RDP_CDP
IDP_SINK
Table 1. DP/DM Resistor-Dividers
Table 2. Digital Input State Table for the MAX14641
Detailed DescriptionThe MAX14640–MAX14644/MAX14651 adapter emulator
devices have high-speed USB analog switches that support
USB hosts by identifying the USB port as a charger when the
USB host is in a low-power mode and cannot enumerate USB
devices. The devices feature low 4pF (typ) on-capacitance
and low 4I (typ) on-resistance when the USB switches are
connected. DP and DM are capable of handling signals
between 0V and 5.5V over the entire 3.0V–5.5V supply range.
The MAX14640/MAX14651 are controlled by an I2C
interface, while the MAX14641–MAX14644 are
controlled by the CB0 and CB1 logic inputs. The I2C
interface allows further customization over which mode
the MAX14640/MAX14651 operate in and can be used
to read back connection information.
Improvements over the MAX14600 USB detector family
include support for some smartphones that do not connect
after applying 0.6V in charging downstream port (CDP)
mode. The devices also support high-current charging of
Apple devices while in sleep mode.
Resistor-DividersThe MAX14640–MAX14644/MAX14651 feature internal
resistor-divider networks on the data lines to provide
support for Apple devices. The resistor-divider is disconnected
while not in use to minimize the supply current. The
resistor-dividers are not connected in pass-through
mode. Table 1 summarizes the resistor values connected
to DP/DM in different charging modes.
Switch Control
Digital ControlsThe MAX14641–MAX14644 feature two digital select
inputs, CB0 and CB1, for mode selection. Table 2,
Table 3, and Table 4 show how the CB1/CB0 inputs can
be used to enter autodetection charger mode (AM_),
pass-through mode (PM), forced charger mode (FM
and AP_), and pass-through mode with CDP emulation
(CM).
In CDP emulation mode, the peripheral device with CDP
detection capability draws charging current up to 1.5A
immediately without USB enumeration.
MAX14640–MAX14644/MAX14651USB Host Adapter Emulators
CHARGING MODEDP PULLUP (kI)DP PULLDOWN (kI)DM PULLUP (kI)DM PULLDOWN (kI)
AM17549.943.249.9
AM243.249.97549.9
CB1CB0CHARGER/USBMODESTATUS0CHARGERAM22A Autodetection Charger Mode for Apple Devices. Resistor-dividers are
connected to DP/DM.0CHARGERAP1Forced 1A Charger Mode for Apple Devices. Resistor-dividers are connected to
DP/DM.1USBPMUSB Pass-Through Mode. DP/DM are connected to TDP/TDM.1USBCMUSB Pass-Through Mode with CDP Emulation. Auto connects DP/DM to TDM/TDM
depending on CDP detection status.
Table 3. Digital Input State Table for the MAX14642
Table 4. Digital Input State Table for the MAX14643/MAX14644
Table 5. Digital Input State Table for the MAX14640/MAX14651X = Don’t care.
I2C ControlsThe MAX14640/MAX14651 mode is controlled by the
MODE_SEL[2:0] bits. Table 5 shows how these bits control
the device. In addition to being configurable in all modes
that the MAX14641–MAX14644 can enter, the MAX14640/
MAX14651 can be configured to be compatible with the
Apple and Samsung® Galaxy (SS mode) devices.
Legacy D+/D- DetectThe MAX14640–MAX14644/MAX14651 support charging
devices that use a D+/D- short to indicate it is ready for
charging. This is done by monitoring the voltage at both
the DP and DM terminals and triggering when they are
both higher than their comparator thresholds.
MAX14640–MAX14644/MAX14651USB Host Adapter Emulators
CB1CB0CHARGER/USBMODESTATUS0CHARGERAM22A Autodetection Charger Mode for Apple Devices. Resistor-dividers are
connected to DP/DM.1USBPMUSB Pass-Through Mode. DP/DM are connected to TDP/TDM.1USBCMUSB Pass-Through Mode with CDP Emulation. Auto connects DP/DM to TDM/TDM
depending on CDP detection status.
CB1CB0CHARGER/USBMODESTATUS0CHARGERAM22A Autodetection Charger Mode for Apple Devices. Resistor-dividers are
connected to DP/DM.0CHARGERFMForced Dedicated Charger Mode. DP and DM are shorted.1USBPMUSB Pass-Through Mode. DP/DM are connected to TDP/TDM.1USBCMUSB Pass-Through Mode with CDP Emulation. Auto connects DP/DM to TDM/TDM
depending on CDP detection status.
MODE_SELCHARGER/USBMODESTATUS[2][1][0]00CHARGERAM22A Autodetection Charger Mode for Apple Devices. Resistor-dividers are
connected to DP/DM.01USBPMUSB Pass-Through Mode. DP/DM are connected to TDP/TDM.10CHARGERFMForced Dedicated Charger Mode. DP and DM are shorted.11USBCMUSB Pass-Through Mode with CDP Emulation. Auto connects DP/DM to TDM/TDM
depending on CDP detection status.00CHARGERAM11A Autodetection Charger Mode for Apple Devices. Resistor-dividers are
connected to DP/DM.01CHARGERAP1Forced 1A Charger Mode for Apple Devices. Resistor-dividers are connected to
DP/DM.10CHARGERAP2Forced 2A Charger Mode for Apple Devices. Resistor-dividers are connected to
DP/DM.11CHARGERSSForced 2A Charger Mode for Samsung Galaxy Tablet
Figure 5. MAX14644 Peripheral Reset Applications Diagram
* 2s (typ) for MAX14644ETA+TCNE
Auto Peripheral ResetThe MAX14641–MAX14644 feature an auto current-
limit switch control output. This feature resets the
peripheral connected to VBUS in the event the USB
host switches to or from standby mode. CEN or CEN
are pulsed for 1s* (typ) on the rising or falling edge of
CB0 or CB1 (Figure 5 and Figure 6.).
Pass-Through ModesIf the MAX14640–MAX14644/MAX14651 are configured
in pass-through mode (PM), then TDP/TDM are always
connected to DP/DM and no resistor-dividers or power
sources are applied to DP/DM.
MAX14640–MAX14644/MAX14651USB Host Adapter Emulators
MAX14644
USB
TRANSCEIVER
CURRENT-LIMIT
SWITCH
PM/AMSYSTEM CONTROL
CM/FMCB1
CB0
+5V POWER
SUPPLY
VCC
TDMTDP
TDMTDP
0.1µF
150µF
GND
USB
CONNECTIONDP
GND
VCC
VBUS
VBUS
PS EN
CEN
1kΩ
10kΩ
Figure 6. MAX14641/MAX14642/MAX14643 Peripheral Reset Applications
Table 6. Forced Charging Modes
Forced Charger ModesThe MAX14640–MAX14644/MAX14651 can be configured
in different forced dedicated charging port (DCP) modes;
VBUS is enabled and DP and DM are either shorted (FM)
or connected to resistor-dividers (all other modes). Table
6 summarizes the resistor-divider values in each forced
mode.
Automatic Detection with Remote Wake-Up SupportThe MAX14640–MAX14644/MAX14651 feature automatic
detection charger mode (AM1/AM2) for dedicated
chargers and USB masters. In automatic detection
charger mode, the device monitors the voltages on DM
and DP with resistor-dividers connected to determine
the type of device attached.
If a USB-compliant device is connected, DP and DM
are shorted together to commence charging. Once the
charging device is removed, the short between DP and
DM is disconnected and the resistor-divider is applied.
A pulldown resistor on the shorted DP/DM node ensures
that a disconnect is detected.
MAX14640–MAX14644/MAX14651USB Host Adapter Emulators
CHARGING MODEDP PULLUP (kI)DP PULLDOWN (kI)DM PULLUP (kI)DM PULLDOWN (kI)N/AN/AN/AN/A30103010
AP17549.943.249.9
AP243.249.97549.9
MAX14641
MAX14642
MAX14643
USB
TRANSCEIVER
CURRENT-LIMIT
SWITCH
PM/AMSYSTEM CONTROL
CM/FMCB1
CB0
+5V POWER
SUPPLY
VCC
TDMTDP
TDMTDP
0.1µF
150µF
GND
USB
CONNECTIONDP
GND
VCC
VBUS
VBUS
PS EN
CEN
1kΩ33kΩ
