74LS163A, 74LS160A Datasheet - Motorola

74LS163A BCD DECADE COUNTERS / 4-BIT BINARY COUNTERS

BCD DECADE COUNTERS/ 4-BIT BINARY COUNTERS The LS160A / 161A / 162A / 163A are high-speed 4-bit synchronous counters. They are edge-triggered, synchronously presettable, and cascadable MSI building blocks for counting, memory addressing, frequency division and other applications. The LS160A and LS162A count modulo 10 (BCD). The LS161A and LS163A count modulo 16 (binary.) The LS160A and LS161A have an asynchronous Master Reset (Clear) input that overrides, and is independent of, the clock and al.

74LS163A Features

* 163A AC SETUP REQUIREMENTS (TA = 25°C) Symbol Parameter tWCP Clock Pulse Width Low tW MR or SR Pulse Width ts Setup Time, other

* ts Setup Time PE or SR th Hold Time, data th Hold Time, other trec Recovery Time MR to CP

* CEP, CET or DATA Limits Min Typ Max 25 20 20 25 3 0 15 Uni

74LS160A-Motorola.pdf