规格：逻辑系列/标号 74ACT540,
ON SEMICONDUCTOR
Buffer / Line Driver, Inverting, 4.5 V to 5.5 V, WSOIC-20
(EN)
TEXAS INSTRUMENTS
Buffer / Line Driver, Inverting, 3-State, 4.5V to 5.5V, SOIC-20
(EN)
ON SEMICONDUCTOR
Buffer / Line Driver, Inverting, 4.5 V to 5.5 V, TSSOP-20
(EN)
