MC74LCX16646

MOTOROLA SEMICONDUCTOR TECHNICAL DATA Advance Information Low-Voltage CMOS 16-Bit Transceiver/Registered Transceiver With 5V-Tolerant Inputs and Outputs (3-State, Non-Inverting) MC74LCX16646 The MC74LCX16646 is a high performance, non–inverting 16–bit transceiver/registered transceiver operating from a 2.7 to 3.6V supply. The device is byte controlled. Each byte has separate control inputs which can be tied together for full 16–bit operation. High impedance TTL compatible inputs significantly reduce current loading to input drivers while TTL compatible outputs offer improved switching noise performance. A VI specification of 5.5V allows MC74LCX16646 inputs to be safely driven from 5V devices. The MC74LCX16646 is suitable for memory address driving and all TTL level bus oriented transceiver applications. Data on the A or B bus will be clocked into the registers as the appropriate clock pin goes from a LOW–to–HIGH logic level. Output Enable (OEn) and Direction Control (DIRn) pins are provided to control the transceiver outputs. In the transceiver mode, data present at the high impedance port may be stored in either the A or the B register or in both. The select controls (SBAn, SABn) can multiplex stored and real–time (transparent mode) data. The DIR determines which bus will receive data www.DataSheet4U.com when OE is active LOW. In the isolation mode (OE HIGH), A data may be stored in the B register or B data may be stored in the A register. Only one of the two buses, A or...