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Document Reference No.: FT_000132
USB-COM485-PLUS1 Datasheet
Version 1.21
Clearance No.: FTDI# 95
4
Electrical details
4.1 USB
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
*Present when USB
USB_VCC
Input Power Voltage*
4.25
5.0*
5.25
V
cable is attached and
USB Host or Hub
powered.
***Does not include
I cc
USB current***
30
50
mA
power supplied to
external device
connected to pin 9
Table 4.1 USB Electrical Details
4.2 RS485
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Receiver Input
VCM
Common-mode input
-7
+12
V
voltage range
IN
Input Current
1.0
VIN = +12V
mA
-0.8
VIN = -7V
VTH
VIHYST
RIN
Differential Threshold
Voltage
Input Hysteresis
Input Resistance, RIN
-0.2
12
20
15
+0.2
V
mV
k Ω
Transmitter Output
VOD
Differential Output
Voltage
1.5
5
V
With RL = 54 Ω .
CL = 50pF *
ESD Tolerance
ESD HBM
EN61000-4-2
Contact Discharge
EN61000-4-2 Air
Gap Discharge
RS485 Inputs and
Outputs
RS-485 Inputs and
Outputs
RS-485 Inputs and
Outputs
±15
±8
±15
kV
kV
kV
Table 4.2 RS485 Electrical Details
* - The 54 ohms is the equivalent of two 120 ohm termination resistors placed on each side of the
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相关代理商/技术参数
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制造商:Future Technology Devices International (FTDI Chip) 功能描述:COMMUNICATION DEVICES PROVIDE A SIMPLE METHOD OF ADAPTING LEGACY SERIAL DEVICES WITH RS485 INTERFACES TO MODERN USB PORTS 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MODULE DEV USB-RS485 1 COM PORT 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MOD, USB FS TO RS485, 1 PORT, FT232R 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MODULE, USB FS TO RS485 CONV, 1 COM PORT, FT232R; ;ROHS COMPLIANT: YES
USB-COM485-PLUS2
功能描述:界面模块 USB HS to RS485 Conv Assembly 2 DB9 Ports
RoHS:否 制造商:4D Systems 产品:Serial Converters 通道/端口数量: 数据速率: 接口类型:USB, UART 工作电源电压:3.3 V, 5 V 最大工作温度:
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制造商:Future Technology Devices International (FTDI Chip) 功能描述:USB TO A DUAL INTERFACE RS485 LEVEL SERIAL UART ADAPTOR 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MODULE DEV USB-RS485 2 COM PORT 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MOD, USB HS TO RS485, 2 CH, FT2232H 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MODULE, USB HS TO RS485 CONV, 2 COM PORT, FT2232H; ;ROHS COMPLIANT: YES
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功能描述:界面模块 USB HS to RS485 Conv Assembly 4 DB9 Ports
RoHS:否 制造商:4D Systems 产品:Serial Converters 通道/端口数量: 数据速率: 接口类型:USB, UART 工作电源电压:3.3 V, 5 V 最大工作温度:
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制造商:MEILHAUS 功能描述:CONVERTER, USB-IF, 1 PORT 制造商:MEILHAUS 功能描述:CONVERTER, USB-IF, 1 PORT; Convert From:USB; Convert To:RS422/485; SVHC:No SVHC (18-Jun-2012); Frequency Measuring Range:921.6kbps; Interface Type:USB to RS422/RS485; Series:USB-COM
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制造商:Status Instruments Ltd 功能描述:CONFIG TOOL FOR HTR & 1603 SERIES