LS7084

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


Pinout




Specifications

PARAMETER	SYMBOL	VALUE	UNITS
DC Supply Voltage	VDD - VSS	11.0	V
Voltage at any input	VIN	VSS -.3 to VDD +.3	V
Operating temperature	TA	0 to +70
Storage temperature	TSTG	-55 to +150

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.