TI哪些型号被关注? TI热门产品型号
  • 制造厂商:TI
  • 产品类别:逻辑和电压转换
  • 技术类目:专用逻辑 IC - 单稳多谐振荡器(单稳态)
  • 功能描述:双路可重触发单稳态多谐振荡器
  • 点击这里打开及下载SN74AHC123A的技术文档资料
  • TI代理渠道,提供当日发货、严格的质量标准,满足您的目标价格

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.

  • 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)

  • Number of channels (#)
  • 2
  • Supply voltage (Min) (V)
  • 2
  • Supply voltage (Max) (V)
  • 5.5
  • Technology Family
  • AHC
  • Input type
  • Schmitt-Trigger
  • Output type
  • Push-Pull
  • ICC (uA)
  • 40
  • IOL (Max) (mA)
  • 8
  • IOH (Max) (mA)
  • -8
  • Features
  • Balanced outputs, High speed (tpd 10-50ns), Over-voltage tolerant inputs, Retriggerable


SN74AHC123AD,工作温度:-40 to 85,封装:SOIC (D)-16,包装数量MPQ:40个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网SN74AHC123AD的批量USD价格:.334(1000+)

SN74AHC123ADBR,工作温度:-40 to 85,封装:SSOP (DB)-16,包装数量MPQ:2000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网SN74AHC123ADBR的批量USD价格:.147(1000+)

SN74AHC123ADGVR,工作温度:-40 to 85,封装:TVSOP (DGV)-16,包装数量MPQ:2000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网SN74AHC123ADGVR的批量USD价格:.134(1000+)

SN74AHC123ADR,工作温度:-40 to 85,封装:SOIC (D)-16,包装数量MPQ:2500个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网SN74AHC123ADR的批量USD价格:.106(1000+)

SN74AHC123AN,工作温度:-40 to 85,封装:PDIP (N)-16,包装数量MPQ:25个,MSL 等级/回流焊峰值温度:N/A for Pkg Type,引脚镀层/焊球材料:NIPDAU,TI官网SN74AHC123AN的批量USD价格:.154(1000+)

SN74AHC123APWR,工作温度:-40 to 85,封装:TSSOP (PW)-16,包装数量MPQ:2000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网SN74AHC123APWR的批量USD价格:.119(1000+)

SN74AHC123APWRG4,工作温度:-40 to 85,封装:TSSOP (PW)-16,包装数量MPQ:2000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网SN74AHC123APWRG4的批量USD价格:.154(1000+)


14-24-LOGIC-EVM — 支持 14 到 24 引脚 PW、DB、D、DW、NS、DYY 和 DGV 封装的通用逻辑 EVM

该 EVM 设计用于支持采用 14 至 24 引脚 D、DW、DB、NS、PW、DYY 或 DGV 封装的任何逻辑器件。

TI代理|TI中国代理 - 国内领先的TI芯片采购平台