DM74197

The DM74197 is designed as one kind of presettable binary counters which contains divide-by-two and divide-by-eight sections which can be combined to form a module 16 binary counter. State changes are initiated by the falling edge of the clock.

Some absolute maximum ratings of DM74197 have been concluded into several points as follow. (1)Its supply voltage would be 7V. (2)Its input voltage would be 5.5V. (3)Its operating free air temperature range would be from 0°C to 70°C. (4)Its storage temperature range would be from -65°C to 150°C. (5)Its recommended supply voltage would be min 4.75V and typ 5V and max 5.25V. (6)Its recommended high level input voltage would be min 2V. (7)Its recommended low level input voltage would be max 0.8V. (8)Its recommended high level output current would be max -0.25mA. (9)Its recommended low level output current would be max 16mA. It should be noted that stresses above those listed in absolute maximum ratings may cause permanent damage to device.

Also some electrical characteristics of DM74197 are concluded as follow. (1)Its input clamp voltage would be max -1.5V. (2)Its high level output voltage would be min 2.4V and typ 3.4V. (3)Its low level output voltage would be typ 0.2V and max 0.4V. (4)Its input current at max input voltage would be max 1mA. (5)Its high level input current would be max 1mA with test conditions of Vi=5.5V and it would be max 40uA with conditions of Vi=2.4V. (6)Its low level input current would be max -1.6mA. (7)Its short circuit output current would be min -18mA and max -57mA. (8)Its supply current would be max 59mA. (9)Its maximum count frequency at CP0 would be min 50MHz. (10)Its maximum count frequency at CP1 would be min 25MHz. (11)Its propagation delay CP0 to Q0 would be max 12ns for tPLH and would be max 15ns for tPHL. And so on. If you have any question or suggestion or want to know more information please contact us for details. Thank you!