USB Cable Interface
[USB Description]
[USB Interface ICs]
[USB Pinout] [USB
Connector]
[USB Standard / Organizations]
[Converter, Adapter, Cables] [Software]
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This page covers USB 2.0 and below, refer here for USB 3.0
Cable is 4 wire. The data wires are 28 AWG, the power wires are
20 to 28 AWG.
Two power lines are un-twisted and 2 data lines, twisted.
Longer cables will use 20 AWG for power.
The wire are color coded per the
drawing above. Cables will have an A plug on one end an a B plug on the
opposite end.
The maximum cable length is 5 meters; however that can be
increased by using Hubs.
The USB interface is designed to operate down to
-20 degrees C.
APC
RAM Electronics
Industries Inc
{USB Converters / Adaptors / Cable Assemblies}
icron
{Extreme USB - USB Converter, Hub/Hub allows USB up to 100 meters}
| Pin | Signal Name | Description |
| 1 | VBUS | Red |
| 2 | D- | White |
| 3 | D+ | Green |
| 4 | GND | Black |
| Shell | Shield | Drain |
The USB pinout is the same for either a type A or B connector, the difference is in the shape
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![]() USB Connector Styles |
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Possible transition cable assemblies include; USB to IEEE488, USB to GPIB, USB to RS232, USB to RS422
Engineering Design Key words: USB, Universal Serial Bus,
Transceiver, Physical Layer, Description, Products, USB pinout,
PHY, Electrical, 2-wire, Pin Out, Electrical Standard, Interface Standard, Specification,
Spec, Circuit layout, Electrical Interface,
Physical Interface, Engineering Description, electrical
characteristics, Personal
Computer Bus, physical Cable Bus, USB Pinouts, HCD, USBD
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