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D 型触发器

SN74LS273

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具有清零端的八通道 D 型触发器

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数据表

SN74LS273

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数据表 立即订购

产品详情

Number of channels 8 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) 27000 Features High speed (tpd 10-50ns) Operating temperature range (°C) 0 to 70 Rating Catalog
Number of channels 8 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) 27000 Features High speed (tpd 10-50ns) Operating temperature range (°C) 0 to 70 Rating Catalog
SOIC (DW) 20 131.84 mm² (12.8 mm × 10.3 mm) PDIP (N) 20 228.702 mm² (24.33 mm × 9.4 mm) SOP (NS) 20 98.28 mm² (12.6 mm × 7.8 mm)
  • Contains Eight Flip-Flops With Single-Rail Outputs
  • Buffered Clock and Direct Clear Inputs
  • Individual Data Input to Each Flip-Flop
  • Applications Include:
    • Buffer/Storage Registers
    • Shift Registers
    • Pattern Generators
  • Contains Eight Flip-Flops With Single-Rail Outputs
  • 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 with a direct clear input.

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 flip-flops are guaranteed to respond to clock frequencies ranging form 0 to 30 megahertz while maximum clock frequency is typically 40 megahertz. Typical power dissipation is 39 milliwatts per flip-flop for the ´273 and 10 milliwatts for the ´LS273.

 

 

 

These monolithic, positive-edge-triggered flip-flops utilize TTL circuitry to implement D-type flip-flop logic with a direct clear input.

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 flip-flops are guaranteed to respond to clock frequencies ranging form 0 to 30 megahertz while maximum clock frequency is typically 40 megahertz. Typical power dissipation is 39 milliwatts per flip-flop for the ´273 and 10 milliwatts for the ´LS273.

 

 

 
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* 数据表 Octal D-Type Flip-Flop With Clear--SN54273, SN54LS273, SN74273, SN74LS273 数据表 1988-3-1
应用手册 Power-Up Behavior of Clocked Devices (Rev. B) PDF | HTML 2022-12-15

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