參數(shù)資料
型號： MAX3344E
廠商： Maxim Integrated Products, Inc.
英文描述： ?5kV ESD-Protected USB Transceivers in UCSP with USB Detect
中文描述： ±15kV ESD保護(hù)、USB收發(fā)器，UCSP封裝，帶有USB檢測
文件頁數(shù)： 7/15頁
文件大小： 406K
代理商： MAX3344E
Power-Supply Configurations
Normal Operating Mode
Connect V
L
and V
CC
to system power supplies (Table
1). Connect V
L
to a +1.65V to +3.6V supply. Connect
V
CC
to a +4.0V to +5.5V supply. Alternatively, the
MAX3344E/MAX3345E can derive power from a single
Li+ battery. Connect the battery to V
CC.
V
VTRM
remains
above +3.0V for V
CC
as low as +3.1V.
Additionally, the MAX3344E/MAX3345E can derive
power from a 3.3V ±10% voltage regulator. Connect V
CC
and VTRM to an external +3.3V voltage regulator.
Disable Mode
Connect V
CC
to a system power supply and leave V
L
unconnected or connect to GND. D+ and D- enter a tri-
state mode and V
CC
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
CC
(or
V
CC
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 V
L
consumes less
than 20μA of supply current. D+ and D- withstand exter-
nal signals up to +5.5V in sharing mode (Table 2).
Device Control
D+ and D-
D+ and D- are the USB-side transmitter I/O connec-
tions, and are ESD protected to ±15kV using the
Human Body Model, ±10kV using IEC 1000-4-2 Air-
Gap Discharge, and ±8kV using IEC 1000-4-2 Contact
Discharge, making the MAX3344E/MAX3345E ideal for
applications where a robust transmitter is required. A
23.7
resistor is required on D+ and D- for normal
operation (see the
External Resistors
section).
ENUM
USB specification 2.0 requires a 1.5k
pullup resistor
on D+ for full-speed (12Mbps) operation. Controlled by
enumerate (ENUM), the MAX3344E/MAX3345E provide
this internal 1.5k
resistor. Drive ENUM high to connect
the pullup resistor from D+ to VTRM. Drive ENUM low to
disconnect the pullup resistor from D+ to VTRM.
VPO/VMO, VPI/VMI, and
OE
The MAX3344E/MAX3345E system-side inputs are VPO
and VMO. Data comes into the MAX3344E/MAX3345E
through VPO and VMO. VPO and VMO operate either
differentially with VPO as the positive terminal and VMO
as the negative terminal, or single ended with VPO as
the data input (see the
MODE
section).
M
±15kV ESD-Protected USB Transceivers
in UCSP with USB Detect
_______________________________________________________________________________________
7
V
CC
(V)
VTRM (V)
V
L
(V)
CONFIGURATION
NOTES
+4.0 to +5.5
+3.1 to +4.5
+3.0 to +3.6
GND or floating
+3.0 to +5.5
+3.3 Output
+3.3 Output
+3.0 to +3.6 Input
Output
Output
+1.65 to +3.6
+1.65 to +3.6
+1.65 to +3.6
+1.65 to +3.6
GND or floating
Normal mode
Battery supply
Voltage regulator supply
Sharing mode
Disable mode
—
—
—
Table 2
Table 2
INPUTS/OUTPUTS
DISABLE MODE
SHARING MODE
V
CC
/VTRM
+5V input/+3.3V output
+3.3V input/+3.3V input
+3.7V input/+3.3V output
Floating or connected to GND
< +3.6V (MAX3344E)
< +1.0V (MAX3345E)
V
L
D+ and D-
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**
High impedance
VPI and VMI
Invalid*
RCV
SPEED, SUSP,
OE,
ENUM
Invalid*
High impedance
Table 2. Disable-Mode and Sharing-Mode Configurations
Table 1. Power-Supply Configurations
*
High Impedance or low.
**
High or low.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX3344EEBE 制造商:Maxim Integrated Products 功能描述:+/-15KV ESD-PROTECTED USB TRANSCEIV - Rail/Tube 制造商:Rochester Electronics LLC 功能描述:
MAX3344EEBE+T 功能描述:USB 接口集成電路 +/-15kV ESD-Protected USB Transceivers in UCSP with USB Detect 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
MAX3344EEBE-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
MAX3344EEUE 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
MAX3344EEUE+ 功能描述:USB 接口集成電路 ESD-Protected USB Tcvr 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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