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参数资料
| 型号： | MAX3345E |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | ?5kV ESD-Protected USB Transceivers in UCSP with USB Detect |
| 中文描述： | ±15kV ESD保护、USB收发器，UCSP封装，带有USB检测 |
| 文件页数： | 8/15页 |
| 文件大小： | 406K |
| 代理商： | MAX3345E |
M
±15kV ESD-Protected USB Transceivers
in UCSP with USB Detect
8
_______________________________________________________________________________________
The MAX3344E/MAX3345E system-side outputs are
VPI, VMI, and RCV. The MAX3344E/MAX3345E send
data through VPI, VMI, and RCV. VPI and VMI are out-
puts to the single-ended receivers and RCV is the out-
put of the differential receiver.
Output enable (
OE
) controls data transmission. Drive
OE
low to enable data transmission on D+ and D-. Drive
OE
high to disable data transmission or receive data.
MODE
MODE is a control input that selects whether differential
or single-ended logic signals are recognized by the
system side of the MAX3344E/MAX3345E. Drive MODE
high to select differential mode with VPO as the positive
terminal and VMO as the negative terminal. Drive
MODE low to select single-ended mode with VPO as
the data input (Table 3).
VTRM
VTRM is the 3.3V output of the internal linear voltage
regulator. VTRM powers the internal circuitry of the USB
side of the MAX3344E/MAX3345E. Connect a 1μF (min)
low-ESR ceramic or plastic capacitor from VTRM to
GND, as close to VTRM as possible. Do not use VTRM
to power external circuitry.
V
CC
Bypass V
CC
to GND with a 1μF ceramic capacitor as
close to the device as possible. If V
CC
drops below the
USB detect threshold, supply current drops
below 20μA avoiding excessive V
CC
current consump-
tion, and D+/D- enter a high-impedance state allowing
other devices to drive the lines.
USB Detect
USB detect output (USB_DET) signals that V
CC
is pre-
sent. A high at USB_DET indicates that V
CC
is present,
while a low at USB_DET indicates that V
CC
is not pre-
sent. The MAX3344E USB_DET threshold is between
3.6V (min) and 4V (max), while the MAX3345E USB_DET
threshold is between 1V (min) and 2.8V (max).
SUSP
Suspend (SUSP) is a control input. Force SUSP high to
place the MAX3344E/MAX3345E in a low-power state.
In this state, the quiescent supply current into V
CC
is
less than 40μA and RCV goes low.
In suspend mode, VPI and VMI remain active as
receive outputs and VTRM stays on. The MAX3344E/
MAX3345E continue to receive data from the USB,
allowing the μP to sense activity on the D+/D- lines and
wake up the MAX3344E/MAX3345E.
The MAX3344E/MAX3345E can also transmit data to
D+ and D- while in suspend mode. This function is
used to signal a remote wake-up by driving a signal on
D+ and D- for a period of 1ms to 15ms. In suspend
mode, data can only be transmitted with full-speed
slope control.
Figure 1c. IEC 1000-4-2 ESD Test Model
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
150pF
R
C
50M
TO 100M
R
D
330
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
Figure 1b. Human Body Model Current Waveform
I
P
100%
90%
36.8%
t
RL
TIME
t
DL
CURRENT WAVEFORM
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
Ir
10%
0
0
AMPERES
Figure 1a. Human Body ESD Test Models
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
100pF
R
C
1M
R
D
1500
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
相关PDF资料 |
PDF描述 |
|---|---|
| MAX3345EEBE-T | +-5kV ESD-Protected USB Transceivers in UCSP with USB Detect |
| MAX3344EEUE | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| MAX3345EEUE | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| MAX3346E | ?5kV ESD-Protected USB Transceiver in UCSP |
| MAX3313E | ±.15kV ESD-Protected.460kbps.1µ.A.RS-232-Compatible Transceivers in µ.MAX |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX3345EEBE | 制造商:Maxim Integrated Products 功能描述:+/-15KV ESD-PROTECTED USB TRANSCEIV - Rail/Tube |
| MAX3345EEBE+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 |
| MAX3345EEBE-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 |
| MAX3345EEUE | 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 |
| MAX3345EEUE+ | 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 |
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