HCC4518B

The HCC4518B is designed as dual BCD up-counter. Each consist of two identical, internally synchronous 4-stage counters. The counter stages are D type flip-flops having interchangeable clock and enable lines for incrementing on either the positiv going or negative going transition.

HCC4518B has eight features. (1)Medium speed operation: 8MHz typ, clock frequency at 10V. (2)Positive or begative edge triggering. (3)Synchronous internal carry propagation. (4)Quiescent current specified to 20V for HCC device. (5)5V, 10V and 15V parametric ratings. (6)Inout current of 10nA at 18V and 25°C for HCC device. (7)100% tested for quiescent current. (8)Meets all requirements of JEDEC tentative standard No.13A. Those are all the main features.

Some absolute maximum ratings of HCC4518B have been concluded into several points as follow. (1)Its supply voltage would be from -0.5V to 20V. (2)Its input voltage would be from -0.5V to Vdd+0.5V. (3)Its DC input current any one input would be +/-10mA. (4)Its total power dissipation per package would be 200mW. (5)Its operating temperature range would be from -55°C to 125°C. (6)Its storage temperature range would be from -65°C to 150°C. It should be noted that stresses above those listed in absolute maximum ratings may cause permanent damage to device.

Also some electrical characteristics of HCC4518B at Vdd=5V are concluded as follow. (1)Its quiescent current would be typ 0.04uA and max 5uA. (2)Its output high voltage would be min 4.95V. (3)Its output low voltage would be max 0.05V. (4)Its input high voltage would be min 3.5V. (5)Its input low voltage would be max 1.5V. (6)Its output drive current would be min -1.6mA and typ -3.2mA. (7)Its output sink current would be min 0.61mA and typ 1mA. (8)Its input leakage current would be typ +/-10^-5uA and max +/-0.1uA. (9)Its input capacitance would be typ 5pF and max 7.5pF. And so on. If you have any question or suggestion or want to know more information about HCC4518B, please contact us for details. Thank you!