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HEF4522 series datasheets. Manufacturer: Philips Semiconductors.

HEF4522BDProgrammable 4-bit BCD down counter in 16-pin DIL package.Datasheet*)
HEF4522BPProgrammable 4-bit BCD down counter in 16-pin DIL package.Datasheet*)
HEF4522BTProgrammable 4-bit BCD down counter in 16-pin SO package.Datasheet*)
HEF4522Programmable 4-bit BCD down counterDatasheet*)
HEF4522BProgrammable 4-bit BCD down counterDatasheet*)
HEF4522BFProgrammable 4-bit BCD down counterDatasheet*)
HEF4522BNProgrammable 4-bit BCD down counterDatasheet*)
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