74AC190PC Synchronous Up/Down Counter
74AC190SC Synchronous Up/Down Counter
74AC191 Up/Down Counter with Preset Ripple Clock
74AC191CW Up/Down Counter with Preset and Ripple Clock
74AC191MTC Up/Down Counter with Preset Ripple Clock
74AC191MTCX Up/Down Counter with Preset Ripple Clock
74AC191PC Up/Down Counter with Preset Ripple Clock
74AC191PCQR Asynchronous Up/Down Counter
74AC191SC Up/Down Counter with Preset Ripple Clock
74AC191SCQR Asynchronous Up/Down Counter
74AC191SCX Up/Down Counter with Preset Ripple Clock
74AC191SJ Up/Down Counter with Preset Ripple Clock
74AC191SJX Up/Down Counter with Preset Ripple Clock
74AC192PC Synchronous Up/Down Counter
74AC192SC Synchronous Up/Down Counter