IDT72131 Datasheet | Integrated Device Technology

CMOS PARALLEL-TO-SERIAL FIFO 2048 X 9 4096 X 9 Integrated Device Technology, Inc. IDT72131 IDT72141 Features : - 35ns parallel port access time, 45ns cycle time - 50MHz serial port shift rate - Expandable in depth and width with no external ponents - Programmable word lengths including 7-9, 16-18, 32-36 bit using Flexishift™ serial output without using any additional ponents - Multiple status flags: Full, Almost-Full (1/8 from full), Half-Full, Almost Empty (1/8 from empty), and Empty - Asynchronous and simultaneous read and write operations - Dual-Port zero fall-through architecture - Retransmit capability in single device mode - Produced with high-performance, low power CMOS technology - Available in 28-pin plastic DIP - Industrial temperature range (-40o C to +85o C) is available, tested to military electrical specifications DESCRIPTION: The IDT72131/72141 are high-speed, low power parallelto-serial FIFOs. These FIFOs are ideally suited to serial munications 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 ponents. 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. FUNCTIONAL BLOCK DIAGRAM D 0 -D 8 PIN CONFIGURATION D4...