规格：逻辑系列/标号 74ACT240,
TEXAS INSTRUMENTS
Buffer / Driver, Inverting, 3-State, 4.5V to 5.5V, TSSOP-20
(EN)
TEXAS INSTRUMENTS
Buffer / Driver, Inverting, 3-State, 4.5V to 5.5V, SOIC-20
(EN)
TEXAS INSTRUMENTS
Buffer, Inverting, TTL, 4.5V to 5.5V, DIP-20
(EN)
