Description
The 74ACT1284 contains four high-speed non-inverting bidirectional buffers and three non-inverting buffers with open drain outputs fabricated in silicon gate C2MOS technology. It’s intended to provide a standard signaling method for a bidirection parallel peripheral in an Extended Capabilities Port mode (ECP). The HD (active High) input pin enables the B ports to switch from Open Drain to a high drive totem pole output, capable of sourcing 14mA on all seven buffers. The DIR input determines the direction of data flow on the bidirectional buffers. DIR (active High) enables data flow from A Port to B Port. DIR (active Low) enables data flow from B Port to A Port. ESD protection is greater than 2000V per Method 3015.7 of MIL-STD-883B. It’s available in the commercial temperature ranges. 74ACT1284 HIGH SPEED IEEE1284 TRANSCEIVER