The SN74LVC1G123 device is a single retriggerable monostable multivibrator designed for 1.65-V to 5.5-V V_CC operation.

This monostable multivibrator features 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 C_ext and R_ext/C_ext (positive) and an external resistor connected between R_ext/C_ext and V_CC. To obtain variable pulse durations, connect an external variable resistance between R_ext/C_ext and V_CC. 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 and B inputs have Schmitt triggers with sufficient hysteresis to handle slow input transition rates with jitter-free triggering at the outputs.

• Available in the Texas Instruments NanoFree? Package
• Supports 5-V VCC Operation
• Inputs Accept Voltages to 5.5 V
• Max tpd of 8 ns at 3.3 V
• Supports Mixed-Mode Voltage Operation on All Ports
• Supports Down Translation to VCC
• Schmitt-Trigger Circuitry on A and B Inputs for Slow Input Transition Rates
• Edge 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
• Glitch-Free Power-Up Reset on Outputs
• Ioff Supports Live Insertion, Partial-Power-Down Mode, and Back-Drive Protection
• 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 (#)
• 1
• Supply voltage (Min) (V)
• 1.65
• Supply voltage (Max) (V)
• 5.5
• Technology Family
• LVC
• Input type
• Schmitt-Trigger
• Output type
• Push-Pull
• ICC (uA)
• 20
• IOL (Max) (mA)
• 32
• IOH (Max) (mA)
• -32
• Features
• Over-voltage tolerant inputs, Partial power down (Ioff), High speed (tpd 10-50ns), Balanced outputs

SN74LVC1G123的完整型号有：74LVC1G123DCURG4、74LVC1G123DCUTG4、SN74LVC1G123DCTR、SN74LVC1G123DCTT、SN74LVC1G123DCUR、SN74LVC1G123DCUT、SN74LVC1G123YZPR，以下是这些产品的关键参数及官网采购报价：

74LVC1G123DCURG4，工作温度：-40 to 125，封装：VSSOP (DCU)-8，包装数量MPQ：3000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74LVC1G123DCURG4的批量USD价格：.436（1000+）

74LVC1G123DCUTG4，工作温度：-40 to 125，封装：VSSOP (DCU)-8，包装数量MPQ：250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74LVC1G123DCUTG4的批量USD价格：.512（1000+）

SN74LVC1G123DCTR，工作温度：-40 to 125，封装：SM8 (DCT)-8，包装数量MPQ：3000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SN74LVC1G123DCTR的批量USD价格：.172（1000+）

SN74LVC1G123DCTT，工作温度：-40 to 125，封装：SM8 (DCT)-8，包装数量MPQ：250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SN74LVC1G123DCTT的批量USD价格：.515（1000+）

SN74LVC1G123DCUR，工作温度：-40 to 125，封装：VSSOP (DCU)-8，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网SN74LVC1G123DCUR的批量USD价格：.139（1000+）

SN74LVC1G123DCUT，工作温度：-40 to 125，封装：VSSOP (DCU)-8，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网SN74LVC1G123DCUT的批量USD价格：.455（1000+）

SN74LVC1G123YZPR，工作温度：-40 to 85，封装：DSBGA (YZP)-8，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网SN74LVC1G123YZPR的批量USD价格：.439（1000+）

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