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具有清零端的四路 D 型触发器
Number of channels (#) 4
Technology Family LS
Supply voltage (Min) (V) 4.5
Supply voltage (Max) (V) 5.5
Input type Bipolar
Output type Push-Pull
Clock Frequency (Max) (MHz) 35
IOL (Max) (mA) 8
IOH (Max) (mA) -0.4
ICC (Max) (uA) 18000
Features High speed (tpd 10-50ns)
  • '174, 'LS174, 'S174 Contain Six Flip-Flops with Single-Rail Outputs
  • '175, 'LS175, 'S175 Contain Four Flip-Flops with Double-Rail Outputs
  • Three Performance Ranges Offered: See Table Lower Right
  • Buffered Clock and Direct Clear Inputs
  • Individual Data Input to Each Flip-Flop
  • Applications include:
    • Buffer/Storage Registers
    • Shift Registers
    • Pattern Generators

These monolithic, positive-edge-triggered flip-flops utilize TTL circuitry to implement D-type flip-flop logic. All have a direct clear input, and the '175, 'LS175, and 'S175 feature complementary outputs from each flip-flop.

Information at the D inputs meeting the setup time requirements is transferred to the Q outputs on the positive-going edge of the clock pulse. Clock triggering occurs at a particular voltage level and is not directly related to the transition time of the positive-going pulse. When the clock input is at either the high or low level, the D input signal has no effect at the output.

These circuits are fully compatible for use with most TTL circuits.