Presettable Bcd/decade Up/down Counters Presettable 4-bit Binary Up/down Counters , Inc

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) 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-stage Counters An Up/Down Count Control (U/D) input determines whether a circuit counts up or down. A Terminal Count (TC) output and a Ripple Clock (RC) output provide overflow/underflow indication and make possible a variety of methods for generating carry/borrow signals in multistage Counter applications. By Freescale Semiconductor, Inc
SN54LS190 's PackagesSN54LS190 's pdf datasheet
SN54LS190J
SN74LS190N
SN74LS190D
SN54LS191J
SN74LS191N
SN74LS191D




SN54LS190 Pinout, Pinouts
SN54LS190 pinout,Pin out
This is one package pinout of SN54LS190,If you need more pinouts please download SN54LS190's pdf datasheet.

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