General description

The 74LV123 is a low-voltage Si-gate CMOS device and is pin and function compatible with the 74HC123; 74HCT123.

Features and benefits

■ Optimized for low-voltage applications: 1.0 V to 5.5 V

■ Accepts TTL input levels between VCC = 2.7 V and VCC = 3.6 V

■ Typical output ground bounce: < 0.8 V at VCC = 3.3 V and Tamb = 25°C

■ Typical HIGH-level output voltage (VOH) undershoot: > 2 V at VCC = 3.3 V and

Tamb = 25°C

■ DC triggered from active HIGH or active LOW inputs

■ Retriggerable for very long pulses up to 100 duty factor

■ Direct reset terminates output pulses

■ Schmitt-trigger action on all inputs except for the reset input

74LV123屬于集成電路（IC） > 多諧振蕩器。恩智浦半導(dǎo)體公司制造生產(chǎn)的74LV123多諧振蕩器多諧振蕩器是簡(jiǎn)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(chēng)為“單發(fā)”，具有一種穩(wěn)定狀態(tài)；但施加觸發(fā)信號(hào)可使它們離開(kāi)此狀態(tài)一段時(shí)間，該時(shí)間通常由所連接電容器的值來(lái)確定。這些器件對(duì)于去彈跳開(kāi)關(guān)觸頭等應(yīng)用非常有用。非穩(wěn)型沒(méi)有穩(wěn)定狀態(tài)，在兩個(gè)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(lái)確定。