SN74ABT3612-15PQ

FIFOs Memory Overview

The SN74ABT3612 is a high-speed, low-power BiCMOS bidirectional clocked FIFO memory featuring two independent 64 × 36 dual-port SRAM arrays. It supports clock frequencies up to 67 MHz with read access times as fast as 10 ns. Each port includes programmable almost-full and almost-empty flags synchronized to respective clocks. Mailbox-bypass registers allow direct data transfer between ports. Parity checking and generation are supported for each 36-bit data bus.

FIFOs Memory Feature Summary

• Two independent 64-word by 36-bit clocked FIFOs buffer data in opposite directions
• Mailbox-bypass registers enable direct command and control information transfer without queuing
• Programmable almost-full and almost-empty flags provide precise memory level monitoring
• Passive parity checking and selectable parity generation ensure data integrity on both ports

FIFOs Memory Applications

• Buffering data streams between asynchronous microprocessors or buses
• High-bandwidth computing applications requiring parallel data path expansion
• DMA control initialization using mailbox bypass registers
• Synchronous interface buffering where metastability reduction is critical

FIFOs Memory Procurement Notes

Verify the specific package variant required, as the device is available in 120-pin Thin Quad Flat (PCB) and 132-pin Plastic Quad Flat (PQ) packages. Confirm that the operating temperature range of 0°C to 70°C aligns with your system requirements. Ensure that the power supply voltage levels match the standard TTL/CMOS compatible inputs specified for the ABT family before integration.

FIFOs Memory Selection Notes

Select this component when bidirectional data flow between two synchronous domains is required. The 36-bit width suits wide data bus applications. Consider the mailbox feature if immediate command passing is needed alongside buffered data. Verify that the 67 MHz maximum clock frequency meets your system timing constraints and that the 10 ns access time satisfies latency requirements.

FIFOs Memory Part Context

This device belongs to the Texas Instruments SN74ABT series, utilizing Low-Power Advanced BiCMOS technology. It is part of a broader family of clocked FIFO memories designed for high-performance digital systems. The SN74ABT3612 specifically addresses needs for wide-data, bidirectional buffering with integrated status flags and error checking capabilities.

FIFOs Memory Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. Consult Texas Instruments documentation for current equivalent listings or newer revisions within the SN74ABT family.