IDT72131

The IDT72131/72141 are high-speed, low power parallelto- serial FIFOs. These FIFOs are ideally suited to serial communications applications, tape/disk controllers, and local  area networks (LANs). The IDT72131/72141 can be configured with the IDTs serial-to-parallel FIFOs (IDT72132/72142) for bidirectional serial data buffering.

The FIFO has a 9-bit parallel input port and a serial output port. Wider and deeper parallel-to-serial data buffers can be built using multiple IDT72131/72141 chips. IDTs unique Flexishift serial expansion logic (SOX,NR) makes width expansion possible with no additional components. These FIFOs will expand to a variety of word widths including 8, 9, 16, and 32 bits. The IDT72131/141 can also be directly connected for depth expansion.

Five flags are provided to monitor the FIFO. The full and empty flags prevent any FIFO data overflow or underflow conditions. The almost-full (7/8), half-full, and almost empty (1/8) flags signal memory utilization within the FIFO.

The IDT72131/72141 is fabricated using IDTs high-speed submicron CMOS technology.