MC74LCX16500

MOTOROLA SEMICONDUCTOR TECHNICAL DATA Low-Voltage CMOS 18-Bit Universal Bus Transceiver With 5V-Tolerant Inputs and Outputs (3-State, Non-Inverting) MC74LCX16500 The MC74LCX16500 is a high performance, non–inverting 18–bit universal bus transceiver operating from a 2.7 to 3.6V supply. This part is not byte controlled; it is “18–bit” controlled. 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 MC74LCX16500 inputs to be safely driven from 5V devices. The MC74LCX16500 is suitable for memory address driving and all TTL level bus oriented transceiver applications. Data flow in each direction is controlled by Output Enable (OEAB, OEBA), Latch Enable (LEAB, LEBA) and Clock inputs (CAB, CBA). When LEAB is HIGH, the A–to–B dataflow is transparent. When LEAB is LOW, and CAB is held at LOW or HIGH, the data A is latched; on the HIGH–to–LOW transition of CAB the A–data is stored in the latch/flip–flop. The outputs are active when OEAB is HIGH. When OEAB is LOW the B–outputs are in 3–state. Similarly, the LEBA, OEBA and CBA control the B–to–A dataflow. Please note that the output enables are complementary; OEAB is active HIGH, OEBA is active LOW. www.DataSheet4U.com LOW–VOLTAGE CMOS 18–BIT UNIVERSAL BUS TRANSCEIVER Designed for 2.7 to 3.6V VCC Operation 6ns Maximum tpd 5V Tolerant — Interface Capability With 5V TTL Lo...