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This is 4-Axis USB CNC Motion Controller for Mach3
Output Pins (Regulated Voltage)
Ideal for cooling applications such as power supplies
Adjustable output voltage
74HC139 (Dual 2 to 4 Line Decoder) tof This is 4-Axis USB CNC74HC139 IS A dual 2 to 4 line decoder demultiplexer IC Specification Propagation Delay Time: 145 ns at 2V 25 ns at 6V Power Dissipation: 320 mW Output Current: 5. 2 mA at 6 V No. of Inputs: 3X 3 No. of Pins: 16 Operating Temperature Range: 40C to +125C Supply Voltage Range: 2V to 6V Package: DIP 16 Logic Diagram Symbol Pin Description 1E, 2E 1, 15 enable input (active LOW) 1A0, 1A1 2,3 address input 1Y0, 1Y1, 1Y2, 1Y3 4,5,6,7 output (active LOW) GND 8
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