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参数资料
| 型号： | MAX3349EETE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/16页 |
| 文件大小： | 0K |
| 描述： | IC TXRX USB 2.0 FS 16-TQFN |
| 标准包装： | 75 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | USB 2.0 |
| 电源电压： | 4 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（4x4） |
| 包装： | 管件 |
MAX3349E
Hi-Speed USB 2.0 Full-Speed Transceiver
with UART Multiplexing Mode
10
______________________________________________________________________________________
with a 0.1F ceramic capacitor as close to the device
as possible.
Operating Modes
The MAX3349E operates in either USB mode or UART
mode, depending on the presence or absence of
VBUS. Bus detect output BD is logic-high when a volt-
age higher than VTH-VBUS is applied to VBUS, and
logic-low otherwise. The MAX3349E operates in USB
mode when BD is logic-high, and UART mode when
BD is logic-low.
USB Mode
In USB mode, the MAX3349E implements a full-speed
(12Mbps) USB interface on D+ and D-, with enumerate
and suspend functions. A differential USB receiver pre-
sents the USB state as a logic-level output RCV
(Table 3a). VP/VM are outputs of single-ended USB
receivers when OE is logic-high, allowing detection of
single-ended 0 (SE0) events. When OE is logic-low, VP
and VM serve as inputs to the USB transmitter. Drive
suspend input SUS logic-high to force the MAX3349E
into a low-power operating mode and disable the differ-
ential USB receiver (Table 3b).
UART Mode
The MAX3349E operates in UART mode when BD is
logic-low (VBUS not present). The Rx signal is the out-
put of a single-ended receiver on D+, and the Tx input
is driven out on D-. Signaling voltage thresholds for D+
and D- are determined by VUART, an externally applied
voltage between +2.7V and +3.3V.
Power-Supply Configurations
VL Logic Supply
In both USB and UART modes, the control interface is
powered from VL. The MAX3349E operates with logic-
side voltage (VL) as low as +1.4V, providing level shift-
ing for lower voltage ASICs and microcontrollers.
Timing Diagrams (continued)
IP 100%
90%
36.8%
tRL
TIME
tDL
CURRENT WAVEFORM
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
Ir
10%
0
AMPERES
Figure 10. Human Body Model Current Waveform
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
150pF
RC
50M to 100M
RD
330
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
Figure 11. IEC61000-4-2 ESD Contact Discharge Test Model
tR = 0.7ns to 1ns
30ns
60ns
t
100%
90%
10%
I PEAK
I
Figure 12. IEC 61000-4-2 Contact Discharge Model Current
Waveform
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX3349EETE+ | 功能描述:IC TXRX USB 2.0 FS 16-TQFN RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:25 系列:- 类型:收发器 驱动器/接收器数:2/2 规程:RS232 电源电压:4.5 V ~ 5.5 V 安装类型:通孔 封装/外壳:16-DIP（0.300"，7.62mm） 供应商设备封装:16-PDIP 包装:管件 |
| MAX3349EETE+T | 制造商:Maxim Integrated Products 功能描述:USB TRNSCVR 1TX 1RX 12MBPS 16TQFN EP - Tape and Reel |
| MAX334C/D | 制造商:Maxim Integrated Products 功能描述: |
| MAX334CJE | 功能描述:模拟开关 IC RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
| MAX334CPE | 功能描述:模拟开关 IC RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
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