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    | Partname: | UT54ACTS190 |  | Description: | Radiation-hardened synchronous 4-bit up-down BCD counter. |  | Manufacturer: |  |  | Package: | FlatPack |  | Pins: | 16 |  | Oper. temp.: | -55 to 125 |  | Datasheet: | PDF (106K). Click here to download *)
 |  | The outputs of the four flip-flops are triggered on a low-to-highlevel transition of the clock input if the enable input (CTEN) is low. A logic one applied to CTEN inhibits counting. The direction of the count is determined by the level of the down/up (D/U ) input. When D/U is low, the counter counts up and when D/U is high, it counts down. |  |  Click here to download UT54ACTS190 Datasheet*)
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