SN74LV123ATPWRQ1屬于集成電路（IC）的多諧振蕩器。由美國德州儀器公司制造生產(chǎn)的SN74LV123ATPWRQ1多諧振蕩器多諧振蕩器是簡單的雙態(tài)器件，盡管它們的典型使用方式在很大程度上具有模擬特性，但通常被認(rèn)為是數(shù)字邏輯元器件。單穩(wěn)型也稱為“單發(fā)”，具有一種穩(wěn)定狀態(tài)；但施加觸發(fā)信號可使它們離開此狀態(tài)一段時間，該時間通常由所連接電容器的值來確定。這些器件對于去彈跳開關(guān)觸頭等應(yīng)用非常有用。非穩(wěn)型沒有穩(wěn)定狀態(tài)，在兩個狀態(tài)之間按一定頻率持續(xù)轉(zhuǎn)換，該頻率通常也是由所連接電容器的值來確定。

1 Features

1? Qualified for Automotive Applications

? Typical VOLP (Output Ground Bounce)

<0.8 V at VCC = 3.3 V, TA = 25°C

? Typical VOHV (Output VOH Undershoot)

>2.3 V at VCC = 3.3 V, TA = 25°C

? Supports Mixed-Mode Voltage Operation on All

Ports

? 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

? Ioff Supports Partial-Power-Down Mode Operation

? Retriggerable for Very Long Output Pulses, up to

100% Duty Cycle

? Overriding Clear Terminates Output Pulse

? Glitch-Free Power-Up Reset on Outputs

? ESD Protection Exceeds JESD 22

– 2000-V Human-Body Model (A114-A)

– 1000-V Charged-Device Model (C101)

2 Applications

? Automotive

? Infotainment Systems

? DVD and Blu-ray Players

? GPS Navigation Devices

? Advanced Driver Assistance Systems

? Automotive Body and Lighting

3 Description

The SN74LV123A-Q1 device is a dual retriggerable

monostable multivibrator designed for 2-V to 5.5-V

VCC operation.