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SN74AHC123AD

  • 描述:逻辑类型: 单稳态 传播延迟: 7.5 ns 电源电压: 2 V ~ 5.5 V 供应商设备包装: 16-SOIC 工作温度: -40摄氏度~85摄氏度 安装类别: 表面安装
  • 品牌: 德州仪器 (Texas)
  • 交期:2-3 工作日
渠道:
  • 自营
  • 得捷
  • 贸泽

起订量: 1

数量 单价 合计
1+ 2.78794 2.78794
200+ 1.07890 215.78040
500+ 1.04106 520.53250
1000+ 1.02225 1022.25600
  • 库存: 10598
  • 单价: ¥2.78794
  • 数量:
    - +
  • 总计: ¥2.79
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规格参数

  • 部件状态 可供货
  • 制造厂商 德州仪器 (Texas)
  • 逻辑类型 单稳态
  • 独立电路板 two
  • 施密特触发输入 Yes
  • 工作温度 -40摄氏度~85摄氏度
  • 安装类别 表面安装
  • 包装/外壳 16-SOIC(0.154“,3.90毫米宽)
  • 供应商设备包装 16-SOIC
  • 输出高电流, 输出低电流 8毫安, 8毫安
  • 电源电压 2 V ~ 5.5 V
  • 传播延迟 7.5 ns

SN74AHC123AD 产品详情

The ’AHC123A devices are dual retriggerable monostable multivibrators designed for 2-V to 5.5-V VCC operation.

These edge-triggered multivibrators feature output pulse-duration control by three methods. In the first method, the A\ input is low, and the B input goes high. In the second method, the B input is high, and the A\ input goes low. In the third method, the A\ input is low, the B input is high, and the clear (CLR)\ input goes high.

The output pulse duration is programmed by selecting external resistance and capacitance values. The external timing capacitor must be connected between Cext and Rext/Cext (positive) and an external resistor connected between Rext/Cext and VCC. To obtain variable pulse durations, connect an external variable resistance between Rext/Cext and VCC. The output pulse duration also can be reduced by taking CLR\ low.

Pulse triggering occurs at a particular voltage level and is not directly related to the transition time of the input pulse. The A\, B, and CLR\ inputs have Schmitt triggers with sufficient hysteresis to handle slow input transition rates with jitter-free triggering at the outputs.

Once triggered, the basic pulse duration can be extended by retriggering the gated low-level-active (A\) or high-level-active (B) input. Pulse duration can be reduced by taking CLR\ low. CLR\ input can be used to override A\ or B inputs. The input/output timing diagram illustrates pulse control by retriggering the inputs and early clearing.

The variance in output pulse duration from device to device typically is less than ±0.5% for given external timing components. An example of this distribution for the ’AHC123A is shown in Figure 10. Variations in output pulse duration versus supply voltage and temperature are shown in Figure 6.

During power up, Q outputs are in the low state, and Q\ outputs are in the high state. The outputs are glitch free, without applying a reset pulse.

For additional application information on multivibrators, see the application report Designing With the SN74AHC123AD and SN74AHCT123A, literature number SCLA014.

Feature

  • Operating Range 2-V to 5.5-V VCC
  • Schmitt-Trigger Circuitry On A\, B, and CLR\ Inputs for Slow Input Transition Rates
  • Edge Triggered From Active-High or Active-Low Gated Logic Inputs
  • Retriggerable for Very Long Output Pulses
  • Overriding Clear Terminates Output Pulse
  • Glitch-Free Power-Up Reset On Outputs
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)
Description

The ’AHC123A devices are dual retriggerable monostable multivibrators designed for 2-V to 5.5-V VCC operation.

These edge-triggered multivibrators feature output pulse-duration control by three methods. In the first method, the A\ input is low, and the B input goes high. In the second method, the B input is high, and the A\ input goes low. In the third method, the A\ input is low, the B input is high, and the clear (CLR)\ input goes high.

The output pulse duration is programmed by selecting external resistance and capacitance values. The external timing capacitor must be connected between Cext and Rext/Cext (positive) and an external resistor connected between Rext/Cext and VCC. To obtain variable pulse durations, connect an external variable resistance between Rext/Cext and VCC. The output pulse duration also can be reduced by taking CLR\ low.

Pulse triggering occurs at a particular voltage level and is not directly related to the transition time of the input pulse. The A\, B, and CLR\ inputs have Schmitt triggers with sufficient hysteresis to handle slow input transition rates with jitter-free triggering at the outputs.

Once triggered, the basic pulse duration can be extended by retriggering the gated low-level-active (A\) or high-level-active (B) input. Pulse duration can be reduced by taking CLR\ low. CLR\ input can be used to override A\ or B inputs. The input/output timing diagram illustrates pulse control by retriggering the inputs and early clearing.

The variance in output pulse duration from device to device typically is less than ±0.5% for given external timing components. An example of this distribution for the ’AHC123A is shown in Figure 10. Variations in output pulse duration versus supply voltage and temperature are shown in Figure 6.

During power up, Q outputs are in the low state, and Q\ outputs are in the high state. The outputs are glitch free, without applying a reset pulse.

For additional application information on multivibrators, see the application report Designing With the SN74AHC123A and SN74AHCT123A, literature number SCLA014.

SN74AHC123AD所属分类:多谐振荡器,SN74AHC123AD 由 德州仪器 (Texas) 设计生产,可通过久芯网进行购买。SN74AHC123AD价格参考¥2.787944,你可以下载 SN74AHC123AD中文资料、PDF数据手册、Datasheet数据手册功能说明书,可查询SN74AHC123AD规格参数、现货库存、封装信息等信息!

德州仪器 (Texas)

德州仪器 (Texas)

德州仪器公司(TI)是一家开发模拟IC和嵌入式处理器的全球半导体设计和制造公司。通过雇用世界上最聪明的人,TI创造了塑造技术未来的创新。如今,TI正在帮助超过10万名客户改变未来。

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