Part # 74LS290 datasheet

Part Manufacturer: Motorola

Motorola

Part Description: 74LS290


Part Details:

SN54/74LS290SN54/74LS293 DECADE COUNTER;4-BIT BINARY COUNTER The SN54 / 74LS290 and SN54 / 74LS293 are high-speed 4-bit ripple type counters partitioned into two sections. Each counter has a divide-by-two sec- DECADE COUNTER; tion and either a divide-by-five (LS290) or divide-by-eight (LS293) section 4-BIT BINARY COUNTER which are triggered by a HIGH-to-LOW transition on the clock inputs. Eachsection can be used separately or tied together (Q to CP)to form BCD, LOW POWER SCHOTTKY Bi-quinary, or Modulo-16 counters. Both of the counters have a 2-input gatedMaster Reset (Clear), and the LS290 also has a 2-input gated Master Set(Preset 9).· Corner Power Pin Versions of the LS90 and LS93 · Low Power Consumption . . . Typically 45 mW J SUFFIX · High Count Rates . . . Typically 42 MHz CERAMIC · Choice of Counting Modes . . . BCD, Bi-Quinary, Binary CASE 632-08 · 14 Input Clamp Diodes Limit High Speed Termination Effects 1 CONNECTION DIAGRAM DIP (TOP VIEW) VCC MR MR CP1 CP0 Q0 Q3 N SUFFIX 14 13 12 11 10 9 8 PLASTIC CASE 646-06 14 NOTE:The Flatpak version 1 LS290 has the same pinouts(Connection Diagram) asthe Dual In-Line Package. D SUFFIX SOIC 14 1 2 3 4 5 6 7 CASE 751A-02 1


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74LS290.pdf Datasheet