The CY74FCT191T is a reversible modulo-16 binary counter, featuring synchronous counting and asynchronous presetting. The preset allows the CY74FCT191T to be used in programmable dividers. The count enable input, terminal count output, and ripple-clock output make possible a variety of methods of implementing multiusage counters. In the counting modes, state changes are initiated by the rising edge of the clock.
This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.
|Part number||Order||Technology Family||VCC (Min) (V)||VCC (Max) (V)||Bits (#)||Voltage (Nom) (V)||F @ nom voltage (Max) (MHz)||ICC @ nom voltage (Max) (mA)||tpd @ nom Voltage (Max) (ns)||IOL (Max) (mA)||IOH (Max) (mA)||Function||Type||Rating||Operating temperature range (C)||Package Group|
||FCT||4.75||5.25||4||5||70||0.2||9.4||64||-32||Binary Counter||Synchronous, Binary, Push-pull||Catalog||-40 to 85||
SOIC | 16
SSOP | 16