HEF4510B up/down counter
HEF4510BD up/down counter
HEF4510BDB BCD up/down counter
HEF4510BF up/down counter
HEF4510BN up/down counter
HEF4510BP up/down counter
HEF4510BPB BCD up/down counter
HEF4510BPN Synchronous Up/Down Counter
HEF4510BT up/down counter
HEF4510BTD Synchronous Up/Down Counter
HEF4510BTD-T Synchronous Up/Down Counter