74LS190 BCD/Decade Up/Down Counter 4-Bit Binary
| Producto nº: | AD21968 |
| Tu precio: | US$2,40 |
| No. de artículos en existencia: | 0 |
| Disponibilidad: | Solicitado |
Description:
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.
Para más detalles ver hoja de datos: 74LS190 Datasheet.pdf (323206)
