DESCRIPTION:

The LS7183 and LS7184 are CMOS quadrature clock converters. Quadrature clocks derived from optical or magnetic encoders, when applied to the A and B inputs of the LS7183/LS7184, are converted to strings of Up Clocks and Down Clocks (LS7183) or to a Clock and an Up/Down direction control (LS7184). These outputs can be interfaced directly with standard Up/Down counters for direction and position

FEATURES:

• x1, x2 and x4 resolution

• Programmable output pulse width (200ns to 140µs)

• Excellent regulation of output pulse width

• TTL and low voltage CMOS compatible I/Os

• +3V to +5.5V operation (VDD - VSS)

• LS7183, LS7184 (DIP);

LS7183-S, LS7184-S (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)