LS7084N

LSI/CSI LS7083N LS7084N U® L LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 (631) 271-0400 FAX (631) 271-0405 A3800 QUADRATURE CLOCK CONVERTER June 2015 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) 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. INPUT/OUTPUT DESCRIPTION: RBIAS (Pin 1) Input for external component connection. A resistor connected between this input and VSS adjusts the output clock pulse width (Tow). For proper operation, the output clock pulse width must be less than or equal to the A, B pulse separation (TOW ≤ TPS). VDD (Pin 2) Supply Voltage positive terminal. VSS (Pin 3) Supply Voltage negative terminal...