PC4 Incremental Encoder Cable Driver

PC4 Product Description

Restriction of Hazardous Substances

The PC4 is a small, plug-in RS-422 cable driver board that drives long cables up to 1000 feet using differential signalling to provide improved noise immunity. The PC4 can be used with the E2, E3, H1, H3, S1 and S2 encoders. Each board has a 5-pin socket designed to plug into the 5 pins of the encoder.

On the output side of the PC4, ribbon cables can be used for lengths up to 100 feet; twisted pair cables are recommended for longer lengths. An optional 120 Ω terminating resistor may be placed across each pair on the receiver side of the cable, matching the cable's characteristic impedance. When calculating the power requirements of the encoder side of the cable, include the current consumed by the module, the driver IC and any terminating resistors. Be sure to supply sufficient voltage to compensate for the voltage drop due to the resistance of the power and ground wires.  If an RS-422 receiver chip such as 26C32 is used on the receiver side of the cable, a 0.1uF ceramic monolithic bypass capacitor across +5V and ground located within 1 inch of the receiver chip is recommended.

Product Specifications

View here or download the specifications


Parameter Min. Max. Units
Operating Temperature -40 100 C
Electrostatic Discharge, Human Body Model -2 2 kV


Parameter Min. Typ. Max. Units Notes
Supply Voltage 4.5 - 5.5 Volts -
Supply Current (26C31) - 1 2 mA -
Output High Voltage 2.5 - - Volts IOH = -20 mA
Output Low Voltage - - 0.8 Volts IOL = 20 mA
Propagation Time - - 15 ns -


Product Driver Header Connector Mates With
PC4-H10 TE# 103309-1 CON-C10*
PC4-H5 TE# 640456-5 CON-C5*

* US Digital part number. For more information see the Cables / Connectors page.


PC4-H5 Output Connector


1 Ground
2 Index
3 A channel
4 +5VDC power
5 B channel

PC4-H10 Output Connector


1 Ground
2 Ground
3 Index-
4 Index+
5 A- channel
6 A+ channel
7 +5VDC power
8 +5VDC power
9 B- channel
10 B+ channel

Product Change Notifications

PC3-H5, PC4, PC5 and PC6 Laser Markings - PCN 6228 9/27/2017 This notification is to inform our customers of a product marking change for the PC3-H5, PC4, PC5, and PC6 products. The purpose for this change is to create a more robust solution by utilizing laser marking versus the current paper label solution. The products effected will now be laser marked. Download

Additional Information

Product Notes

  • Cables and connectors are not included and must be ordered separately.
  • US Digital® warrants its products against defects in materials and workmanship for two years. See complete warranty for details.

Downloads Available


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    PC4 Pricing

    Quantity Unit Price
    1 $15.70
    10 $14.19
    50 $13.40
    100 $12.88
    Over 100 Call for Quote
    Quantity Unit Price Subtotal
    $15.70 $15.70

    For purchasing or volume discounts, please configure the part above, then use the completed part number and contact us!


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