產(chǎn)品詳情

Number of channels 2 Supply voltage (min) (V) 4.75 Supply voltage (max) (V) 5.25 Technology family LS Input type Bipolar Output type Push-Pull Supply current (μA) 20000 IOL (max) (mA) 8 IOH (max) (mA) -0.4 Features Retriggerable, Standard speed (tpd > 50ns) Operating temperature range (°C) 0 to 70 Rating Catalog
Number of channels 2 Supply voltage (min) (V) 4.75 Supply voltage (max) (V) 5.25 Technology family LS Input type Bipolar Output type Push-Pull Supply current (μA) 20000 IOL (max) (mA) 8 IOH (max) (mA) -0.4 Features Retriggerable, Standard speed (tpd > 50ns) Operating temperature range (°C) 0 to 70 Rating Catalog
PDIP (N) 16 181.42 mm2 19.3 x 9.4 SOIC (D) 16 59.4 mm2 9.9 x 6 SOP (NS) 16 79.56 mm2 10.2 x 7.8
  • Will Not Trigger from Clear
  • D-C Triggered from Active-High or Active-Low Gated Logic Inputs
  • Retriggerable for Very Long Output Pulses, Up to 100% Duty Cycle
  • Overriding Clear Terminates Output Pulse
  • 'LS422 Has Internal Timing Resistor

An external timing capacitor may be connected between Cext and Rext/Cext (positive).

To use the internal timing resistor of 'LS422, connect Rint to VCC.

For improved pulse width accuracy and repeatability, connect an external resistor between Rext/Cext and VCC with Rint open-circuited.

To obtain variable pulse widths, connect an external variable resistance between Rint or Rext/Cext and VCC.

 
  • Will Not Trigger from Clear
  • D-C Triggered from Active-High or Active-Low Gated Logic Inputs
  • Retriggerable for Very Long Output Pulses, Up to 100% Duty Cycle
  • Overriding Clear Terminates Output Pulse
  • 'LS422 Has Internal Timing Resistor

An external timing capacitor may be connected between Cext and Rext/Cext (positive).

To use the internal timing resistor of 'LS422, connect Rint to VCC.

For improved pulse width accuracy and repeatability, connect an external resistor between Rext/Cext and VCC with Rint open-circuited.

To obtain variable pulse widths, connect an external variable resistance between Rint or Rext/Cext and VCC.

 

The 'LS422 and 'LS423 are identical to 'LS122 and 'LS123 except they cannot be triggered via clear.

These d-c triggered multivibrators feature output-pulse-width control by three methods. The basic pulse time is programmed by selection of external resistance and capacitance values (see typical application data). The 'LS422 contains an internal timing resistor that allows the circuits to be used with only an external capacitor, if so desired. Once triggered, the basic pulse width may be extended by retriggering the gated low-level-active (A) or high-level-active (B) inputs, or be reduced by use of the overriding clear. Figure 1 illustrates pulse control by retriggering and early clear.

The 'LS422 and 'LS423 have enough Schmitt hysteresis to ensure jitter-free triggering from the B input with transition rates as slow as 0.1 millivolt per nanosecond. The 'LS422 Rint is nominally 10 k ohms.

The SN54LS422 and SN54LS423 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74LS422 and SN74LS423 are characterized for operation from 0°C to 70°C.FIGURE 1-TYPICAL INPUT/OUTPUT PULSES

 

The 'LS422 and 'LS423 are identical to 'LS122 and 'LS123 except they cannot be triggered via clear.

These d-c triggered multivibrators feature output-pulse-width control by three methods. The basic pulse time is programmed by selection of external resistance and capacitance values (see typical application data). The 'LS422 contains an internal timing resistor that allows the circuits to be used with only an external capacitor, if so desired. Once triggered, the basic pulse width may be extended by retriggering the gated low-level-active (A) or high-level-active (B) inputs, or be reduced by use of the overriding clear. Figure 1 illustrates pulse control by retriggering and early clear.

The 'LS422 and 'LS423 have enough Schmitt hysteresis to ensure jitter-free triggering from the B input with transition rates as slow as 0.1 millivolt per nanosecond. The 'LS422 Rint is nominally 10 k ohms.

The SN54LS422 and SN54LS423 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74LS422 and SN74LS423 are characterized for operation from 0°C to 70°C.FIGURE 1-TYPICAL INPUT/OUTPUT PULSES

 
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* 數(shù)據(jù)表 Retriggerable Monostable Multivibrators 數(shù)據(jù)表 1988年 3月 1日

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包含信息：
  • RoHS
  • REACH
  • 器件標(biāo)識
  • 引腳鍍層/焊球材料
  • MSL 等級/回流焊峰值溫度
  • MTBF/時基故障估算
  • 材料成分
  • 鑒定摘要
  • 持續(xù)可靠性監(jiān)測
包含信息：
  • 制造廠地點
  • 封裝廠地點

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