LS7083

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 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.

It is a kind of monolithic CMOS silicon gate quadrature clock converter. Quadrature clocks derived from optical or magnetic encoders, when applied to the A and B inputs of the LS7083, are converted to strings of up clocks and down clocks.

Features of the LS7083 are:(1)x1 and x4 mode selection; (2)up to 16 MHz output clock frequency; (3)programmable output clock pulse width; (4)on-chip filtering of inputs for optical or magnetic encoder applications; (5)TTL and CMOS compatible I/Os; (6)+4.5V to +10.0V operation (VDD-VSS).

The absolute maximum ratings of the LS7083 can be summarized as:(1): DC supply voltage(VDD - VSS ) is 11.0 V; (2): voltage at any input(VIN) is VSS -.3 to VDD +.3 V; (3): operating temperature(TA) is 0 °C to +70 °C; (4): storage temperature(TSTG) is -55 °C to +150 °C.