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MAX3345E

更新时间： 2024-11-20 22:55:23
品牌 Logo 应用领域
美信 - MAXIM /
页数 文件大小 规格书
15页 406K
描述
+-5kV ESD-Protected USB Transceivers in UCSP with USB Detect

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MAX3345E 数据手册

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19-3171; Rev 0; 2/04  
±±5ꢀk EꢁDꢂ-rotected UꢁB Transceivers  
in UCꢁ- with UꢁB Detect  
General Description  
Features  
The MAX3344E/MAX3345E USB transceivers convert  
logic-level signals to USB signals, and USB signals to  
logic-level signals. An internal 1.5kΩ USB pullup resistor  
supports full-speed (12Mbps) USB operation. The  
MAX3344E/MAX3345E provide built-in 15kꢀ ESꢁ-pro-  
✕ ±15kV ESD Protection On D+ and D-  
✕ Comply with USB Specification 1.1 (Full Speed 2.0)  
✕ Separate VP and VM Inputs/Outputs  
✕ V Down to 1.65V Allows Connection with Low-  
L
Voltage ASICs  
tection circuitry on the USB I/O pins, ꢁ+ and ꢁ-, and ꢀ  
.
CC  
✕ Enumerate Input—Allows USB Connection  
through Software  
The MAX3344E/MAX3345E operate with logic supply  
voltages as low as 1.65ꢀ, ensuring compatibility with  
low-voltage ASICs. The suspend mode lowers supply  
current to less than 40µA. An enumerate function allows  
devices to logically disconnect while plugged in. The  
MAX3344E/MAX3345E are fully compliant with USB  
specification 1.1, and full-speed operation under USB  
specification 2.0.  
✕ USB Detect Function  
3.6V (min) to 4V (max)—MAX3344E  
1V (min) to 2.8V (max)—MAX3345E  
✕ Allow Single-Ended or Differential Logic I/O  
✕ Internal Linear Regulator Allows Direct Powering  
from the USB  
✕ Internal Pullup Resistor for Full-Speed Operation  
✕ Three-State Outputs  
✕ No Power-Supply Sequencing Required  
✕ Driver Active in Suspend Mode  
✕ Available in Miniature Chip-Scale Package  
The MAX3344E/MAX3345E have a USB detect that mon-  
itors the USB bus for insertion and signals this event. The  
MAX3344E USB_ꢁET threshold is between 3.6ꢀ (min)  
and 4ꢀ (max), while the MAX3345E USB_ꢁET threshold  
is between 1ꢀ (min) and 2.8ꢀ (max).  
The MAX3344E/MAX3345E are available in the miniature  
4 ✕ 4 UCSP™, as well as the small 16-pin TSSOP, and  
are specified over the extended temperature range,  
-40°C to +85°C.  
Ordering Information  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
Applications  
MAX3344EEUE  
MAX3344EEBE-T  
MAX3345EEUE  
MAX3345EEBE-T  
16 TSSOP  
Cell Phones  
4 x 4 UCSP  
16 TSSOP  
PC Peripherals  
Information Appliances  
ꢁata Cradles  
PꢁAs  
4 x 4 UCSP  
Pin Configurations appear at end of data sheet.  
UCSP is a trademark of Maxim Integrated Products, Inc.  
Typical Operating Circuit  
MP3 Players  
ꢁigital Cameras  
1µF  
V
BUS  
D+  
SYSTEM  
SUPPLY  
VOLTAGE  
V
CC  
V
L
23.7Ω  
23.7Ω  
RCV  
VPI  
VMI  
SUSP  
OE  
MAX3344E/  
MAX3345E  
D+  
0.1µF  
D-  
D-  
GND  
VTRM  
SYSTEM INTERFACE  
USB_DET  
MODE  
ENUM  
VPO  
1µF  
USB  
INTERFACE  
CONNECTOR  
VMO  
GND  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...15

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