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SL4516B

System Logic Semiconductor
Part Number SL4516B
Manufacturer System Logic Semiconductor
Description Presettable Up/Down Counter
Published Apr 8, 2005
Detailed Description SL4516B Presettable Up/Down Counter High-Voltage Silicon-Gate CMOS The SL4516B Presettable Binary Up/Down Counter consi...
Datasheet PDF File SL4516B PDF File

SL4516B
SL4516B

Overview
SL4516B Presettable Up/Down Counter High-Voltage Silicon-Gate CMOS The SL4516B Presettable Binary Up/Down Counter consists of four synchronously clocked D -type flip-flops (with a gating structure to provide T-type flip-flop capability) connected as counters.
This counter can be cleared by a high level on the RESET line, and can be preset to any binary number present on the jam inputs by a high level on the PRESET ENABLE line.
If the CARRY-IN input is held low, the counter advances up or down on each positive-going clock transition.
Synchronous cascading is accomplished by connecting all clock inputs in parallel and connecting the CARRY-OUT of a less significant stage to the CARRYIN of a more significant stage.
The SL4516B can be cascaded in the ripple mode by connecting the CARRY-OUT to the clock of the next stage.
If the UP/DOWN input changes during a terminal count, the CARRY-OUT must be gated with the clock, and the UP/DOWN input must change while the clock is high.
This method provides a clean clock signal to the subsequent counting stage.
• Operating Voltage Range: 3.
0 to 18 V • Maximum input current of 1 µA at 18 V over full packagetemperature range; 100 nA at 18 V and 25°C • Noise margin (over full package temperature range): 1.
0 V min @ 5.
0 V supply 2.
0 V min @ 10.
0 V supply 2.
5 V min @ 15.
0 V supply ORDERING INFORMATION SL4516BN Plastic SL4516BD SOIC TA = -55° to 125° C for all packages PIN ASSIGNMENT LOGIC DIAGRAM FUNCTION TABLE Inputs CL X CI H L L X PIN 16=VCC PIN 8= GND X X X U/D X H L X X PE R L L L H X L L L L H Outputs Mode NO COUNT COUNT UP COUNT DOWN PRESET RESET X = don’t care SLS System Logic Semiconductor SL4516B MAXIMUM RATINGS * Symbol VCC VIN VOUT IIN PD PD Tstg TL * Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage (Referenced to GND) DC Output Voltage (Referenced to GND) DC Input Current, per Pin Power Dissipation in Still Air, Plastic DIP+ SOIC Package+ Power Dissipation per Output Transistor Storage Temperature ...


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