參數(shù)資料
型號： MAX3451EEUD
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 通用總線功能
英文描述： 【15kV ESD-Protected USB Transceivers
中文描述： LINE TRANSCEIVER, PDSO14
封裝： 4.40 MM, TSSOP-14
文件頁數(shù)： 8/16頁
文件大?。?/td> 379K
代理商： MAX3451EEUD
M
ages (V
L
) 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 1.5k
pullup resistor to V
TRM
. The enu-
merate function disconnects the 1.5k
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 V
BUS
is greater than +4.0V. BD asserts
low if V
BUS
is less than +3.6V. The MAX3450E and
MAX3452E require external pullup resistors from either
D+ or D- to V
TRM
to set the bus speed.
Applications Information
Power-Supply Configurations
Normal Operating Mode
Connect V
L
and V
BUS
to system power supplies
(Table 1). Connect V
L
to a +1.65V to +3.6V supply.
Connect V
BUS
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 V
BUS
. V
TRM
remains above +3.0V for V
BUS
as low as +3.1V.
Additionally, the MAX3450E and MAX3451E can derive
power from a +3.3V
±
10% voltage regulator. Connect
V
BUS
and V
TRM
to an external +3.3V voltage regulator.
V
BUS
no longer consumes current to power the internal
linear regulator in this configuration.
Disable Mode
Connect V
BUS
to a system power supply and leave V
L
unconnected or connect to GND. D+ and D- enter a tri-
state mode and V
BUS
(or V
BUS
and V
TRM
) consumes
less than 20μA of supply current. D+ and D- withstand
external signals up to +5.5V in disable mode (Table 2).
Sharing Mode
Connect V
L
to a system power supply and leave V
BUS
(or V
BUS
and V
TRM
) 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 V
L
consumes less
than 20μA 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
V
BUS
(V)
+4.0 to +5.5
+3.1 to +4.5
+3.0 to +3.6
GND or floating
+3.0 to +5.5
V
TRM
(V)
V
L
(V)
CONFIGURATION
Normal mode
Battery supply
Voltage regulator supply
Sharing mode
Disable mode
NOTES
—
+3.0 to +3.6 output
+3.0 to +3.6 output
+3.0 to +3.6 input
Output
V
BUS
+1.65 to +3.6
+1.65 to +3.6
+1.65 to +3.6
+1.65 to +3.6
GND or floating
MAX3450E, MAX3451E
MAX3450E, MAX3451E
Table 2
Table 2
*
High impedance or low
**
High or low
INPUTS/OUTPUTS
DISABLE MODE
SHARING MODE
V
BUS
/V
TRM
+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)
V
L
Floating or connected to GND
High impedance
+1.65V to +3.6V input
High impedance
High impedance for
OE
= low
High for
OE
= high
Undefined**
D+ and D-
VP and VM
Invalid*
RCV
Invalid*
SPD, SUS,
OE
, ENUM
(MAX3451E)
High impedance
High impedance
BD (MAX3452E)
Invalid*
Low
Table 2. Disable-Mode and Sharing-Mode Connections
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX3451EEUD+ 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 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20
MAX3451EEUD+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 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20
MAX3451EEUD-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 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20
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 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20
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