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具有清零端的四路正边沿触发式 D 型触发器
Number of channels (#) 4
Technology Family ALS
Supply voltage (Min) (V) 4.5
Supply voltage (Max) (V) 5.5
Input type Bipolar
Output type Push-Pull
Clock Frequency (Max) (MHz) 70
IOL (Max) (mA) 8
IOH (Max) (mA) -0.4
ICC (Max) (uA) 14000
Features High speed (tpd 10-50ns)
  • ’ALS174 and ’AS174 Contain Six Flip-Flops With Single-Rail Outputs
  • ’ALS175 and ’AS175B Contain Four Flip-Flops With Double-Rail Outputs
  • Buffered Clock and Direct-Clear Inputs
  • Applications Include:
    • Buffer/Storage Registers
    • Shift Registers
    • Pattern Generators
  • Fully Buffered Outputs for Maximum Isolation From External Disturbances (’AS Only)

These positive-edge-triggered flip-flops utilize TTL circuitry to implement D-type flip-flop logic. All have a direct-clear (CLR)\ input. The ?ALS175 and ?AS175B feature complementary outputs from each flip-flop.

Information at the data (D) inputs meeting the setup-time requirements is transferred to the 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 (CLK) 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.