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参数资料
| 型号： | MAX3344EEBE-T |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 通用总线功能 |
| 英文描述： | +-5kV ESD-Protected USB Transceivers in UCSP with USB Detect |
| 中文描述： | LINE TRANSCEIVER, PBGA16 |
| 封装： | UCSP-16 |
| 文件页数： | 9/15页 |
| 文件大小： | 406K |
| 代理商： | MAX3344EEBE-T |
M
±15kV ESD-Protected USB Transceivers
in UCSP with USB Detect
_______________________________________________________________________________________
9
Data Transfer
Receiving Data from the USB
Data received from the USB are output to VPI/VMI in
either of two ways, differentially or single ended. To
receive data from the USB, force
OE
high and SUSP low.
Differential data arriving at D+/D- appear as differential
logic signals at VPI/VMI, and as a single-ended logic sig-
nal at RCV. If both D+ and D- are low, then VPI and VMI
are low, signaling a single-ended zero condition on the
bus; RCV remains in the last known state (Table 3).
Transmitting Data to the USB
The MAX3344E/MAX3345E output data to the USB dif-
ferentially on D+ and D-. The logic driving signals can
be either differential or single ended. For sending differ-
ential logic, force MODE high, force
OE
and SUSP low,
and apply data to VPO and VMO. D+ then follows VPO,
and D- follows VMO. To send single-ended logic sig-
nals, force MODE, SUSP, and
OE
low, and apply data to
VPO/VMO.
ESD Protection
To protect the MAX3344E/MAX3345E against ESD, D+
and D- have extra protection against static electricity to
protect the device up to ±15kV. The ESD structures
withstand high ESD in all states—normal operation,
suspend, and powered down. For the 15kV ESD struc-
tures to work correctly, a 1μF or greater capacitor must
be connected from VTRM to GND.
ESD protection can be tested in various ways; the D+
and D- input/output pins are characterized for protection
to the following limits:
1) ±15kV using the Human Body Model
2) ±8kV using the IEC 1000-4-2 Contact Discharge
Method
3) ±10kV using the IEC 1000-4-2 Air-Gap Method
ESD Test Conditions
ESD performance depends on a variety of conditions.
Contact Maxim for a reliability report that documents test
setup, test methodology, and test results.
Human Body Model
Figure 1a shows the Human Body Model, and Figure 1b
shows the current waveform it generates when dis-
charged into a low impedance. This model consists of a
100pF capacitor charged to the ESD voltage of interest,
which is then discharged into the test device through a
1.5k
resistor.
D+/D-
t
PDZ
t
PZD
V
OHD
- 0.3V
V
OLD
+ 0.3V
V
L
0V
V
L
/2
OE
Figure 2. Enable and Disable Timing, Transmitter
VPO
t
PHLO
V
L
0V
D+
D-
0V
VTRM
V
L
/2
t
PLHO
Figure 3. Mode 0 Timing
t
PLH1
V
L
0V
0V
VTRM
V
L
/2
D+
D-
VMO
V
L
0V
t
PHL1
V
L
/2
t
PLH1
t
PLH1
V
L
/2
VPO
Figure 4. Mode 1 Timing
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX3344EEUE | 功能描述:USB 接口集成电路 RoHS:否 制造商:Cypress Semiconductor 产品:USB 2.0 数据速率: 接口类型:SPI 工作电源电压:3.15 V to 3.45 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:WLCSP-20 |
| MAX3344EEUE+ | 功能描述:USB 接口集成电路 ESD-Protected USB Tcvr RoHS:否 制造商:Cypress Semiconductor 产品:USB 2.0 数据速率: 接口类型:SPI 工作电源电压:3.15 V to 3.45 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:WLCSP-20 |
| MAX3344EEUE+T | 功能描述:USB 接口集成电路 ESD-Protected USB Tcvr RoHS:否 制造商:Cypress Semiconductor 产品:USB 2.0 数据速率: 接口类型:SPI 工作电源电压:3.15 V to 3.45 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:WLCSP-20 |
| MAX3344EEUE-T | 功能描述:USB 接口集成电路 RoHS:否 制造商:Cypress Semiconductor 产品:USB 2.0 数据速率: 接口类型:SPI 工作电源电压:3.15 V to 3.45 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:WLCSP-20 |
| MAX3344EEVKIT# | 功能描述:USB 接口集成电路 15kV ESD-Protected USB Transceivers in UCSP with USB Detect RoHS:否 制造商:Cypress Semiconductor 产品:USB 2.0 数据速率: 接口类型:SPI 工作电源电压:3.15 V to 3.45 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:WLCSP-20 |
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