The AD7581 is a microprocessor compatible 8-bit, 8 channel, memory buffered, data acquisition system on a monolithic CMOS chip. It consists of an 8-bit successive approximation A/D Converter, an 8-channel multiplexer, 8×8 dual-port RAM, three-state DATA drivers (for interface), address latches and microprocessor compatible control logic. * 8-Bit Resolution * On-Chip 8×8 Dual-Port Memory * No Missed Codes over Full Temperature Range * Interfaces directly to Z80/8085/6800 * CMOS, TTL Compatible Digital Inputs