IW4516B Datasheet | IK Semiconductor

TECHNICAL DATA Presettable Up/Down Counter High-Voltage Silicon-Gate CMOS The IW4516B 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 acplished by connecting all clock inputs in parallel and connecting the CARRY-OUT of a less significant stage to the CARRY-IN of a more significant stage. The IW4516B 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 n A 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 IW4516BN Plastic IW4516BD SOIC TA = -55° to 125° C for all packages PIN ASSIGNMENT LOGIC DIAGRAM FUNCTION TABLE Inputs CL CI U/D X H L X X PE R L L L H X L L L L H X H L L X X X X Outputs Mode NO COUNT COUNT UP COUNT DOWN PRESET RESET w w w .d h s a t a ee . u t4 m o c PIN 16=VCC PIN 8= GND X = don’t care .. 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...