ages (VL) from +1.65V to +3.6V. Integrated ±15kV ESD " />
參數(shù)資料
型號(hào)： MAX3451EEUD+T
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 13/14頁(yè)
文件大?。?/td> 0K
描述： TXRX USB +/-15KV ESD 14-TSSOP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,500
類型： 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù)： 1/1
規(guī)程： USB 2.0
電源電壓： 3 V ~ 3.6 V
安裝類型： 表面貼裝
封裝/外殼： 14-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 14-TSSOP
包裝： 帶卷 (TR)
MAX3450E/MAX3451E/MAX3452E
ages (VL) from +1.65V to +3.6V. Integrated ±15kV ESD
protection protects the D+ and D- USB I/O ports.
The MAX3451E features an enumerate function provid-
ing an internal 1.5kΩ pullup resistor to VTRM. The enu-
merate function disconnects the 1.5kΩ pullup resistor,
allowing the MAX3451E to simulate a bus disconnect
while powered and connected to the USB cable. The
MAX3450E is pin-for-pin compatible with Micrel’s
MIC2550A. The MAX3452E features a BD output that
asserts high if VBUS is greater than +4.0V. BD asserts
low if VBUS is less than +3.6V. The MAX3450E and
MAX3452E require external pullup resistors from either
D+ or D- to VTRM to set the bus speed.
Applications Information
Power-Supply Configurations
Normal Operating Mode
Connect VL and VBUS to system power supplies
(Table 1). Connect VL to a +1.65V to +3.6V supply.
Connect VBUS to a +4.0V to +5.5V supply. Alternatively,
the MAX3450E and MAX3451E can derive power from
a single Li+ battery. Connect the battery to VBUS. VTRM
remains above +3.0V for VBUS as low as +3.1V.
Additionally, the MAX3450E and MAX3451E can derive
power from a +3.3V ±10% voltage regulator. Connect
VBUS and VTRM to an external +3.3V voltage regulator.
VBUS no longer consumes current to power the internal
linear regulator in this configuration.
Disable Mode
Connect VBUS to a system power supply and leave VL
unconnected or connect to GND. D+ and D- enter a tri-
state mode and VBUS (or VBUS and VTRM) consumes
less than 20A of supply current. D+ and D- withstand
external signals up to +5.5V in disable mode (Table 2).
Sharing Mode
Connect VL to a system power supply and leave VBUS
(or VBUS and VTRM) unconnected or connect to GND.
D+ and D- enter a tri-state mode, allowing other circuitry
to share the USB D+ and D- lines, and VL consumes less
than 20A of supply current. D+ and D- withstand
external signals up to +5.5V in sharing mode (Table 2).
±15kV ESD-Protected USB Transceivers
8
_______________________________________________________________________________________
Table 1. Power-Supply Configurations
VBUS (V)
VTRM (V)
VL (V)
CONFIGURATION
NOTES
+4.0 to +5.5
+3.0 to +3.6 output
+1.65 to +3.6
Normal mode
—
+3.1 to +4.5
+3.0 to +3.6 output
+1.65 to +3.6
Battery supply
MAX3450E, MAX3451E
+3.0 to +3.6
+3.0 to +3.6 input
+1.65 to +3.6
Voltage regulator supply
MAX3450E, MAX3451E
GND or floating
Output
+1.65 to +3.6
Sharing mode
Table 2
+3.0 to +5.5
VBUS
GND or floating
Disable mode
Table 2
*
High impedance or low
**
High or low
INPUTS/OUTPUTS
DISABLE MODE
SHARING MODE
VBUS/VTRM
+5V input/+3.3V output
+3.3V input/+3.3V input (MAX3450E and MAX3451E)
+3.7V input/+3.3V output (MAX3450E and MAX3451E)
Floating or connected to GND (MAX3450E
and MAX3451)
< +3.6V (MAX3452E)
VL
Floating or connected to GND
+1.65V to +3.6V input
D+ and D-
High impedance
High impedance for
OE = low
VP and VM
Invalid*
High for
OE = high
RCV
Invalid*
Undefined**
SPD, SUS,
OE, ENUM
(MAX3451E)
High impedance
BD (MAX3452E)
Invalid*
Low
Table 2. Disable-Mode and Sharing-Mode Connections
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參數(shù)描述
MAX3452EETE 功能描述:USB 接口集成電路 RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
MAX3452EETE+ 功能描述:USB 接口集成電路 USB Transceiver RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
MAX3452EETE+T 功能描述:USB 接口集成電路 USB Transceiver RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
MAX3452EETE-T 功能描述:USB 接口集成電路 RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
MAX3452EEUD 功能描述:USB 接口集成電路 RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
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