74193 IC Binary Up/Down Counter

Description

The 74LS193 is a UP/DOWN DIP-16 Binary Counter. Separate Count Up and Count Down Clocks are used and in either counting mode the circuits operate synchronously. The outputs change state synchronously with the LOW-to-HIGH transitions on the clock inputs. Separate Terminal Count Up and Terminal Count Down outputs are provided which are used as the clocks for a subsequent stage without extra logic, thus simplifying multistage counter designs. Individual preset inputs allow the circuits to be used as programmable counters. Both the Parallel Load (PL) and the Master Reset (MR) inputs asynchronously override the clocks. Features:- Low Power 95 mW Typical Dissipation High Speed 40 MHz Typical Count Frequency Synchronous Counting Asynchronous Master Reset and Parallel Load Individual Preset Inputs Cascading Circuitry Internally Provided Input Clamp Diodes Limit High-Speed Termination Effects Pin Configuration: Pin No. Pin Name 1 P1 ~ B 2 Q1 ~ QB 3 Q0 ~ QA 4 CPD 5 CPU 6 Q2 ~ QC 7 Q3 ~ QD 8 GND 9 P3 ~ D 10 P2 ~ C 11 PL̅(Active Low) 12 TCU̅(Active Low) 13 TCD̅(Active Low) 14 MR 15 P0 ~ A 16 VCC Pin Description CPU Count up clock pulse input CPD Count down clock pulse input MR Asynchronous Master Reset(Clear) input PL̅ Asynchronous Parallel Load(Active Low) Input TCU Terminal count Up(Carry) output TCD Terminal count Down(Borrow) output A,B, C, & D Preset Inputs(Parallel Data Inputs) Qn Flip-Flop Outputs Specifications:- Symbol Parameter Min Typ Max Unit VCC Supply Voltage 74 4.75 5 5.25 V TA Operating Ambient Temperature Range 74 0 25 70 °C IOH Output Current — High 74 -0.4 mA IOL Output Current — Low 74 8 mA SN74LS193 Datasheet

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