FEATURES:
• Up to 50MHz count frequency in non-quadrature mode;
   Up to 5.6MHz clock frequency (22 x 106 counts/sec) in
   x4 quadrature mode.
• Dual 24-bit counters to support X and Y axes in
   motion control applications. • Dual 24-bit comparators.
• Digital filtering of the input quadrature clocks
• Programmable 8-bit separate filter clock prescalers
   for each axis.
• Error flags for noise exceeding filter band width.
• Programmable Index Input and other programmable I/Os.
• Independent mode programmability for each axis.
• Programmable count modes:
   Quadrature (x1, x2, x4) / Non-quadrature,
   Normal / Modulo-N / Range Limit / Non-Recycle,
   Binary / BCD.
• 8-bit 3-State data I/O bus.
• 3V to 5.5V operation (VDD - VSS).
• TTL/CMOS compatible I/Os.
• LS7267 (DIP); LS7267-S (SOIC); LS7267-TS (TSSOP)