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参数资料
| 型号： | MAX3421EETJ+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 19/28页 |
| 文件大小： | 0K |
| 描述： | IC USB PERIPH/HOST CNTRL 32TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 控制器类型： | USB 外设控制器 |
| 接口： | USB/串行 |
| 电源电压： | 3 V ~ 3.6 V |
| 电流 - 电源： | 15mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
| 配用： | MAX3421EVKIT-1+-ND - EVAL KIT FOR MAX3421E |
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MAX3421E
USB Peripheral/Host Controller
with SPI Interface
26
Maxim Integrated
inputs, and the GPX pin is configured to serve as a sec-
ond MAX3421E interrupt pin that activates only when a
GPIN pin changes state. One of the eight GPOUT pins
turns the VBUS switch on and off. Seven MAX3421E
GPIN and GPOUT pins are available to the system.
Short-Circuit Protection
The MAX3421E withstands VBUS shorts to D+ and D-
on the USB connector side of the 33
Ω series resistors.
ESD Protection
D+, D-, and VBCOMP possess extra protection against
static electricity to protect the devices up to ±15kV. The
ESD structures withstand high ESD in all operating
modes: normal operation, suspend mode, and powered
down. VBCOMP and VCC require 1F ceramic capacitors
connected to ground as close to the pins as possible. D+,
D-, and VBCOMP provide protection to the following limits:
±15kV using the Human Body Model
±8kV using the Contact Discharge method specified
in IEC 61000-4-2
±12kV using the IEC 61000-4-2 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 22 shows the Human Body Model, and Figure 23
shows the current waveform generated when dis-
charged into a low impedance. This model consists of
a 100pF capacitor charged to the ESD voltage of inter-
est, which then discharges into the test device through
a 1.5k
Ω resistor.
IEC 61000-4-2
The IEC 61000-4-2 standard covers ESD testing and
performance of finished equipment. It does not specifi-
cally refer to integrated circuits. The major difference
between tests done using the Human Body Model and
IEC 61000-4-2 is a higher peak current in IEC 61000-4-
2, due to lower series resistance. Hence, the ESD with-
stand voltage measured to IEC 61000-4-2 generally is
lower than that measured using the Human Body
Model. Figure 24 shows the IEC 61000-4-2 model. The
MAX3421E
VCC VL
INT
MOSI
MISO
SCLK
D+
D-
D+
D-
VBCOMP
SS
GND
VBUS
33
Ω
33
Ω
5V SWITCH WITH
CURRENT LIMIT
AND OC DETECT
μP
USB
"A" CONNECTOR
GND
4.7
μF
5V
XI
XO
CXI
CXO
12MHz
OUT
IN
GPOUT
GPIN
ON
FLAG
3.3V
REGULATOR
WITH POR
1.0
μF
CERAMIC
0.1
μF
GPX
VCC
GND
INT1
INT2
RES
Figure 21. MAX3421E in a Host Application
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX3421EVKIT-1+ | 功能描述:界面开发工具 MAX3421E/20E Eval Kit RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| MAX3430CPA | 功能描述:RS-485接口IC RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX3430CPA+ | 功能描述:RS-485接口IC Fail-Safe 1/4-Unit 3.3V Transceiver RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX3430CSA | 功能描述:RS-485接口IC RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX3430CSA+ | 功能描述:RS-485接口IC Fail-Safe 1/4-Unit 3.3V Transceiver RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
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