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D 型触发器

SN74LS378

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具有时钟使能输入的六通道 D 型触发器

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SN74LS378

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Number of channels 6 Technology family LS Input type Bipolar Output type Push-Pull Clock frequency (max) (MHz) 35 IOL (max) (mA) 8 IOH (max) (mA) -0.4 Supply current (max) (µA) 22000 Features High speed (tpd 10-50ns) Operating temperature range (°C) 0 to 70 Rating Catalog
Number of channels 6 Technology family LS Input type Bipolar Output type Push-Pull Clock frequency (max) (MHz) 35 IOL (max) (mA) 8 IOH (max) (mA) -0.4 Supply current (max) (µA) 22000 Features High speed (tpd 10-50ns) Operating temperature range (°C) 0 to 70 Rating Catalog
PDIP (N) 16 181.42 mm² (19.3 mm × 9.4 mm) SOIC (D) 16 59.4 mm² (9.9 mm × 6 mm)
  • 'LS377 and 'LS378 Contain Eight and Six Flip-Flops, Respectively, with Single-Rail Outputs
  • 'LS379 Contains Four Flip-Flops with Double-Rail Outputs
  • Individual Data Input to Each Flip-Flop
  • Applications Include:
    • Buffer/Storage Registers
    • Shift Registers
    • Pattern Generators

 
  • 'LS377 and 'LS378 Contain Eight and Six Flip-Flops, Respectively, with Single-Rail Outputs
  • 'LS379 Contains Four Flip-Flops with Double-Rail Outputs
  • 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 with an enable input. The 'LS377, 'LS378, and 'LS379 devices are similar to 'LS273, 'LS174, and 'LS175, respectively, but feature a common enable instead of a common clear.

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 if the enable input G\ is low. 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. The circuits are designed to prevent false clocking by transitions at the G\ input.

These flip-flops are guaranteed to respond to clock frequencies ranging from 0 to 30 MHz while maximum clock frequency is typically 40 megahertz. Typical power dissipation is 10 milliwatts per flip-flop.

 

These monolithic, positive-edge-triggered flip-flops utilize TTL circuitry to implement D-type flip-flop logic with an enable input. The 'LS377, 'LS378, and 'LS379 devices are similar to 'LS273, 'LS174, and 'LS175, respectively, but feature a common enable instead of a common clear.

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 if the enable input G\ is low. 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. The circuits are designed to prevent false clocking by transitions at the G\ input.

These flip-flops are guaranteed to respond to clock frequencies ranging from 0 to 30 MHz while maximum clock frequency is typically 40 megahertz. Typical power dissipation is 10 milliwatts per flip-flop.

 
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* 数据表 Octal, Hex, And Quad D-Type Flip-Flops With Enable 数据表 1988-3-1

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