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BCD DECADE COUNTERS/ 4-BIT BINARY COUNTE RS
The LS160A / 161A / 162A / 163A are high-speed 4-bit synchronous counters. They are edge-triggered, synchronously presettable, and cascadable MSI buildi ng blocks for counting, memory addressi ng, frequency division and other applic ations. The LS160A and LS162A count mod ulo 10 (BCD). The LS161A and LS163A cou nt modulo 16 (binary.)
The LS160A and L S161A have an asynchronous Master Reset (Clear) input that overrides, and is i ndependent of, the clock and all other control inputs. The LS162A and LS163A h ave a Synchronous Reset (Clear) input t hat overrides all other control inputs, but is active only during the rising c lock edge.
BCD (Modulo 10)
Binary (Mo dulo 16)
• Synchronous Counting and Loading • Two Count Enable Inputs for High S peed Synchronous Expansion • Terminal Count Fully Decoded • Edge-Triggered Operation • Typical Count Rate of 35 MHz • ESD > 3500 Volts