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CAT5129 Datasheet(PDF) 2 Page - ON Semiconductor |
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CAT5129 Datasheet(HTML) 2 Page - ON Semiconductor |
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2 / 13 page  CAT5127, CAT5129 Doc. No. MD-2127 Rev. E 2 © 2009 SCILLC. All rights reserved. Characteristics subject to change without notice PIN CONFIGURATION MSOP/TDFN CAT5127 INC ¯¯¯ 1 8 VCC U/D ¯ 2 7 CS ¯¯ RH 3 6 RL GND 4 5 NC TSOT23-6 CAT5129 CS ¯¯ 1 6 VCC GND 2 5 RH U/D ¯ 3 4 INC ¯¯¯ PIN DESCRIPTIONS DEVICE DESCRIPTION INC ¯¯¯: Increment Control Input The INC ¯¯¯ input moves the wiper in the up or down direction determined by the condition of the U/D ¯ input. U/D ¯: Up/Down Control Input The U/D ¯ input controls the direction of the wiper movement. When in a high state and CS ¯¯ is low, any high-to-low transition on INC ¯¯¯ will cause the wiper to move one increment toward the RH terminal. When in a low state and CS ¯¯ is low, any high-to-low transition on INC ¯¯¯ will cause the wiper to move one increment towards the RL terminal. RH: High End Potentiometer Terminal RH is the high end terminal of the potentiometer. It is not required that this terminal be connected to a potential greater than the RL terminal. Voltage applied to the RH terminal cannot exceed the supply voltage, VCC or go below ground, GND. RL: Low End Potentiometer Terminal (CAT5127 only) RL is the low end terminal of the potentiometer. It is not required that this terminal be connected to a potential less than the RH terminal. Voltage applied to the RL terminal cannot exceed the supply voltage, VCC or go below ground, GND. RL and RH are electrically interchangeable. CS ¯¯ : Chip Select The chip select input is used to activate the control input of the device and is active low. When in a high state, activity on the INC ¯¯¯ and U/D ¯ inputs will not affect or change the position of the wiper. CAT5127 has an internal pull-up resistor on the CS ¯¯ input pin. VCC: Supply Input for the device. Name Function CAT5127 MSOP/TDFN CAT5129 SOT23 INC ¯¯¯ Increment Control 1 4 U/D ¯ Up/Down Control 2 3 RH Potentiometer High Terminal 3 5 GND Ground 4 2 NC No Connect 5 - RL Potentiometer Low Terminal 6 - CS ¯¯ Chip Select 7 1 VCC Supply Voltage 8 6 |
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