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DESCRIPTION:

The LS7083N and LS7084N are CMOS quadrature clock converters. Quadrature clocks derived from optical or magnetic encoders, when applied to the A and B inputs of the LS7083N or LS7084N, are converted to strings of Up Clocks and Down Clocks (LS7083N) or to a Clock and an Up/Down direction control (LS7084N). These outputs can be interfaced directly with standard Up/Down counters for direction and position sensing of the encoder.

FEATURES:

? x1 and x4 mode selection

? Up to 16MHz output clock frequency

? Programmable output clock pulse width

? On-chip filtering of inputs for optical or magnetic encoder applications.

? TTL and CMOS compatible I/Os

? +3V to +12V operation (VDD - VSS)

? LS7083N, LS7084N (DIP); LS7083NS, LS7084NS (SOIC) - See Figure 1

Applications:

? Interface incremental encoders to Up / Down Counters (See Figure 6A and Figure 6B)

? Interface rotary encoders to Digital Potentiometers (See Figure 7)