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You get three (3) IC's
An asynchronous Parallel Load (PL) input overrides counting and loads the data present on the Pn inputs into the flip-flops
which makes it possible to use the circuits as programmable counters
A Count Enable (CE) input serves as the carry / borrow input in multi-state
74LS190 IC TTL Counter 16-Pin Dip Counter Up/Down Decade (3 pcs) electronic components You get three (3) IC'sYou get three (3) IC's New old stock! SYNCHRONOUS UP DOWN COUNTERS WITH DOWN UP MODE CONTROL PRESETTABLE BCD DECADE UP DOWN COUNTERS PRESETTABLE 4 BIT BINARY UP DOWN COUNTE RS The SN54 74LS190 is a synchronous UP DOWN BCD Decade (8421) Counter and the SN54 74LS191 is a synchronous UP DOWN Modulo 16 Binary Counter. State changes of the counters are synchronous with the LOW to HIGH transition of the Clock Pulse input. An asynchronous Parallel Load (PL)
