SN54LS290 - Motorola Inc

SN54LS290 DECADE COUNTER / 4-BIT BINARY COUNTER

The LS290 and LS293 are 4-bit ripple type Decade, and 4-Bit Binary counters respectively. Each device consists of four master/ slave flip-flops which are internally connected to provide a divide-by-two section and a divide-by-five (LS290) or divide-by-eight (LS293) section. Each section has a separate clock input which initiates state changes of the counter .

Features

sion has the same pinouts (Connection Diagram) as the Dual In-Line Package. J SUFFIX CERAMIC CASE 632-08 14 1 14 1 N SUFFIX PLASTIC CASE 646-06 LS290 1 MS VCC 14 2 NC MR 13 3 MS MR 12 4 Q2 CP1 11 5 Q1 CP0 10 6 NC Q0 9 14 7 GND Q3 8 1 D SUFFIX SOIC CASE 751A-02 ORDERING INFORMATION SN54LSXXXJ SN74LSXXXN SN74LSXXXD Ceramic Plastic SOIC LS293 1 NC 2 NC 3 NC 4 Q2 5 Q1 6 NC 7 GND PIN NAMES Clock (Active LOW going edge) Input to ÷ 2 Section. Clock (Active LOW going edge) Input to ÷ 5 Section (LS290). Clock (Active LOW going edge) Input to ÷ 8 Section (LS293). Master Reset (Cl.