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74LS290 4-Bit Ripple Counter IC
High-speed 4-bit ripple type counters with versatile counting modes
- Supply Voltage: 4.75 - 5.25V
- Input HIGH Voltage: 2.0V
- Input LOW Voltage: 0.8V
- Input Clamp Diode Voltage: -1.5V
- Output LOW Voltage: 0.5V
- Short Circuit Current: -100mA
- Package Includes: 1 X 74LS290 IC - (SMD Package) 4-Bit Binary Ripple Counter IC (74290 IC)
Features:
- Corner Power Pin Versions of the LS90 and LS93
- Low Power Consumption Typically 45mW
- High Count Rates Typically 42 MHz
- Choice of Counting Modes - BCD, Bi-Quinary, Binary
The 74LS290 are high-speed 4-bit ripple type counters partitioned into two sections. Each counter has a divide-by-two section and either a divide-by-five (LS290) or divide-by-eight (LS293) section which are triggered by a HIGH-to-LOW transition on the clock inputs. Each section can be used separately or tied together (Q to CP) to form BCD, Bi-quinary, or Modulo-16 counters. Both of the counters have a 2-input gated Master Reset (Clear), and the LS290 also has a 2-input gated Master Set (Preset 9).
Input Clamp Diodes Limit High-Speed Termination Effects.
Images are for illustration only; actual product may vary.