10-bit Counter - National Semiconductor

The ten-bit Counter DM54LS491 74LS491 CAN count up, count down, set, and load 2 LSBs, 2 MSBs and 6 middle bits high or low as a group. All operations are synchronous with the Clock SET over- rides LOAD, COUNT and HOLD. LOAD overrides COUNT. COUNT is conditional on CIN, otherwise it holds. All outputs are enabled when OE is low, otherwise HIGH-Z. The 24 mA IOL outputs are suitable for driving RAM/PROM address lines in Video graphics systems. By National Semiconductor Corporation
DM54LS491 's PackagesDM54LS491 's pdf datasheet
74LS491




DM54LS491 Pinout, Pinouts
DM54LS491 pinout,Pin out
This is one package pinout of DM54LS491,If you need more pinouts please download DM54LS491's pdf datasheet.

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