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参数资料
| 型号： | MAX3349EETE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 16/16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
_______________________________________________________________________________________
9
Detailed Description
The MAX3349E ±15kV ESD-protected, USB transceiver pro-
vides a full-speed USB interface to a microprocessor or
ASIC. The device supports enumeration, suspend, and
VBUS detection. A special UART multiplexing mode routes
external UART signals (Rx and Tx) to D+ and D-, allowing
the use of a shared connector to reduce cost and part count
for mobile devices.
The UART interface allows mobile devices such as PDAs,
cellular phones, and digital cameras to use either UART or
USB signaling through the same connector. The MAX3349E
features a separate UART voltage supply input. The
MAX3349E supports a maximum UART baud rate of
921kbaud.
Upon connection to a USB host, the MAX3349E enters
USB mode and provides a full-speed USB 2.0-compli-
ant interface through VP, VM, RCV, and OE. The
MAX3349E features internal series resistors on D+ and
D-, and an internal 1.5k pullup resistor to D+ to allow
the device to logically connect and disconnect from the
USB bus while plugged in. A suspend mode is provid-
ed for low-power operation. D+ and D- are protected
from electrostatic discharge (ESD) up to ±15kV. To
ensure full ±15kV ESD protection, bypass VBUS to GND
OE
VP/VM
tPLZ_SE
tPZL_SE
tPHZ_SE
tPZH_SE
D+/D- CONNECTED TO GND,
VP/VM CONNECTED
TO PULLUP
D+/D- CONNECTED TO +3V,
VP/VM CONNECTED
TO PULLDOWN
OE
Figure 5. Receiver Enable and Disable Timing
MAX3349E
1. ENABLE TIME (D+/D-)
MEASUREMENT
D+/D-
TEST
POINT
CL
50pF
15k
2. VP/VM TO D+/D-
PROPAGATION DELAY
3. D+/D- RISE/FALL TIMES
Figure 7. Test Circuit for Enable Time, Transmitter Propagation
Delay, and Transmitter Rise/Fall Time
MAX3349E
TEST
POINT
CL
15pF
RCV/VP/VM
1. D+/D- TO RCV/VM/VP
PROPAGATION DELAYS
Figure 8. Test Circuit for Receiver Propagation Delay
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
100pF
RC
1M
RD
1.5k
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
Figure 9. Human Body ESD Test Model
Timing Diagrams (continued)
MAX3349E
1. DISABLE TIME (D+/D-)
MEASUREMENT
V = 0 FOR tPHZ
V = VTRM FOR tPLZ
D+/D-
TEST
POINT
CL
50pF
220
Figure 6. Test Circuit for Disable Time
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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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