DatasheetsPDF.com

HD74HC190 Dataheets PDF



Part Number HD74HC190
Manufacturers Renesas
Logo Renesas
Description Synchronous Up/Down Decade Counter
Datasheet HD74HC190 DatasheetHD74HC190 Datasheet (PDF)

HD74HC190, HD74HC191 Synchronous Up/Down Decade Counter (Single Clock Line) Synchronous Up/Down 4-bit Binary Counter (Single Clock Line) REJ03D0587-0300 Rev.3.00 Jan 31, 2006 Description The HD74HC190 is a 4-bit decade counter and the HD74HC191 is a 4-bit binary counter. Synchronous counting operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when so instructed by the steering logic. This mode of operation eliminates the ou.

  HD74HC190   HD74HC190



Document
HD74HC190, HD74HC191 Synchronous Up/Down Decade Counter (Single Clock Line) Synchronous Up/Down 4-bit Binary Counter (Single Clock Line) REJ03D0587-0300 Rev.3.00 Jan 31, 2006 Description The HD74HC190 is a 4-bit decade counter and the HD74HC191 is a 4-bit binary counter. Synchronous counting operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when so instructed by the steering logic. This mode of operation eliminates the output counting spikes normally associated with asynchronous (ripple clock) counters. The outputs of the four flip-flops are triggered on a low-to-high-level transition of the clock input if the Enable G input is low. A high at Enable G inhibits counting. The direction of the count is determined by the level of the Down/ Up (D/U) input. When D/U is low, the counter counts up and when D/U is high, it counts down. These counters feature a fully independent clock circuit. Changes at the control input.


HD74HC173 HD74HC190 HD74HC191


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)