DESCRIPTION:

The LS7083 and LS7084 are monolithic CMOS silicon gate quadrature clock converters. Quadrature clocks derived from optical or magnetic encoders, when applied to the A and B inputs of the LS7083/LS7084, are converted to strings of Up Clocks and Down Clocks (LS7083) or to a Clock and an Up/Down direction control (LS7084). 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 16 MHz 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

• +4.5V to +10.0V operation (VDD-VSS)

• LS7083, LS7084 (DIP)

LS7083-S, LS7084-S (SOIC) - See Figure 1