US 12,413,233 B1
4-bit synchronous counter IC with ripple carry-out, loading capability, and integrated MOD-10 reset functionality
Abdullah S. Almekhyal, Safat (KW)
Assigned to KUWAIT UNIVERSITY, Safat (KW)
Filed by KUWAIT UNIVERSITY, Safat (KW)
Filed on Jun. 3, 2025, as Appl. No. 19/226,394.
Int. Cl. H03K 21/00 (2006.01); H03K 21/10 (2006.01); H03K 21/38 (2006.01)
CPC H03K 21/38 (2013.01) [H03K 21/10 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A 4-bit synchronous counter integrated circuit (IC), comprising:
four binary output pins configured to output a 4-bit count representing the number of input triggers;
a clock input pin configured to increment the count on a rising edge trigger;
a clear (CLR) input pin configured to reset the output to zero when a LOW signal is applied;
a ripple carry-out (RCO) output pin configured to indicate when the counter output reaches a maximum binary count (16 counts);
a load input pin configured to load a user-defined 4-bit starting value from data inputs (A, B, C, D) into the counter on the next clock pulse; and
an active-low output pin (C10) configured to transition from HIGH to LOW when the count exceeds a single decimal digit.