USB2-H-9002-M EasySync, USB2-H-9002-M Datasheet - Page 20

• Manufacturer Part Number: USB2-H-9002-M
• Description: USB Interface IC Hi-speed USB to 4prt Srl RS232/RS485 adpt
• Manufacturer: EasySync

Specifications of USB2-H-9002-M

• Rohs: yes

4.4
Table 4.4 – RS485 Electrical Details
4.5
The USB2-H-9002-M assigns RI/PWR pin of RS232 interface (but can also be used in RS485 mode) to
provide +5V DC for an external device that requires power. The maximum allowable current that can be
supplied from the USB bus is 500mA, including the circuitry of the USB2-H-9002-M itself. Up to 250mA
(total on 2 ports) may be used by the external devices.
Table 4.5 - Power Output Option
Receiver Input
Transmitter Output
ESD Tolerance
2ContactDischarge
2AirGapDischarge
EN61000-4-
EN61000-4-
Parameter
ESD HBM
Parameter
RS485
Power Output
VIHYST
VCM
VOD
VTH
RIN
I
IN
O
Description
Output Power Current
Description
Common-mode input
voltage range
Input Current
Differential Threshold
Voltage,VTH
Input Hysteresis
Input Resistance, RIN
Differential Output
Voltage,
dVOD
RS485 Inputs and
Outputs
RS-485 Inputs and
Outputs
RS-485 Inputs and
Outputs
USB2-H-9002-M Hi-Speed USB to 2-Port RS232/RS485 Adapter Data Sheet
©2010 EasySync Ltd.
Minimum
Minimum
-0.2
0
1.5
12
-7
Typical
Typical
±15
±15
+12
±8
20
15
Maximum
Maximum
250
+0.2
-0.8
1.0
Document Reference No.: ES_000046
5
Units
mA
Units
mA
mV
kΩ
kV
kV
kV
V
V
V
Clearance No.: ES
VIN = +12V
VIN = -7V
With RL = 54Ω.
CL = 50pF *
total available current
for 2 ports
Conditions
Conditions
Version 1.0
#33
20