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邏輯和電壓轉換
正反器、鎖存器和暫存器
D 型鎖存器

SN74ACT563

現行

具有 3 態輸出的八路 D 型透明鎖存器

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產品規格表

SN74ACT563

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 8 Technology family ACT Input type TTL-Compatible CMOS Output type 3-State Clock frequency (max) (MHz) 90 IOL (max) (mA) 24 IOH (max) (mA) -24 Supply current (max) (µA) 40 Features Balanced outputs, Flow-through pinout, High speed (tpd 10-50ns), Inverting output, Positive input clamp diode Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 8 Technology family ACT Input type TTL-Compatible CMOS Output type 3-State Clock frequency (max) (MHz) 90 IOL (max) (mA) 24 IOH (max) (mA) -24 Supply current (max) (µA) 40 Features Balanced outputs, Flow-through pinout, High speed (tpd 10-50ns), Inverting output, Positive input clamp diode Operating temperature range (°C) -40 to 85 Rating Catalog
TSSOP (PW) 20 41.6 mm² (6.5 mm × 6.4 mm) SOIC (DW) 20 131.84 mm² (12.8 mm × 10.3 mm) PDIP (N) 20 228.702 mm² (24.33 mm × 9.4 mm)
  • 4.5-V to 5.5-V VCC Operation
  • Inputs Accept Voltages to 5.5 V
  • Max tpd of 8.5 ns at 5 V
  • Inputs Are TTL-Voltage Compatible
  • 3-State Inverted Outputs Drive Bus Lines Directly
  • Flow-Through Architecture to Optimize PCB Layout
  • 4.5-V to 5.5-V VCC Operation
  • Inputs Accept Voltages to 5.5 V
  • Max tpd of 8.5 ns at 5 V
  • Inputs Are TTL-Voltage Compatible
  • 3-State Inverted Outputs Drive Bus Lines Directly
  • Flow-Through Architecture to Optimize PCB Layout

The ’ACT563 devices are octal D-type transparent latches with 3-state outputs. When the latch-enable (LE) input is high, the Q\ outputsare set to the complements of the data (D) inputs. When LE is taken low, the Q\ outputs are latched at the inverse logic levels set up at the D inputs.

A buffered output-enable (OE)\ input places the eight outputs in either a normal logic state (high or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased high logic level provide the capability to drive bus lines without interface or pullup components.

OE\ does not affect internal operations of the latches. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

To ensure the high-impedance state during power up or power down, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

The ’ACT563 devices are octal D-type transparent latches with 3-state outputs. When the latch-enable (LE) input is high, the Q\ outputsare set to the complements of the data (D) inputs. When LE is taken low, the Q\ outputs are latched at the inverse logic levels set up at the D inputs.

A buffered output-enable (OE)\ input places the eight outputs in either a normal logic state (high or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased high logic level provide the capability to drive bus lines without interface or pullup components.

OE\ does not affect internal operations of the latches. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

To ensure the high-impedance state during power up or power down, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
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SN74HC563 現行 具有 3 態輸出的八路透明 D 型鎖存器 Voltage range 2V to 6V, average propagation delay 20ns, average drive strength 8mA

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* 資料表 SN54ACT563, SN74ACT563 datasheet (Rev. B) 2002/10/8

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