SN74ALS232BDW

FIFOs Memory Overview

The SN74ALS232BDW is a 64-bit asynchronous first-in, first-out (FIFO) memory organized as 16 words by 4 bits. It supports data rates up to 40 MHz with a typical fall-through time of 14 ns. The device features independent asynchronous inputs and outputs, 3-state outputs, and status monitoring via FULL and EMPTY flags. It operates on a supply voltage range of 4.5 V to 5.5 V within an operating temperature range of 0°C to 70°C.

FIFOs Memory Feature Summary

• Independent asynchronous write and read operations allow processing data at different rates in a bit-parallel format.
• Status monitoring is provided through dedicated FULL and EMPTY output flags to indicate memory state.
• Data is written on the low-to-high transition of the load-clock input and read out on the unload-clock transition.

FIFOs Memory Applications

• Buffering data between components operating at independent clock rates
• Synchronizing data transfer in high-speed digital systems
• Temporary storage for word-by-word data processing

FIFOs Memory Procurement Notes

Verify the specific ordering suffix 'DW' corresponds to the Plastic Small-Outline Package required for your design. Confirm that the component meets RoHS standards if environmental compliance is mandatory. Ensure the selected variant matches the specified operating temperature range and package dimensions for proper integration into the target PCB layout.

FIFOs Memory Selection Notes

Select this component when designing systems requiring asynchronous data buffering between blocks with mismatched clock domains. The 16x4 organization suits applications needing small, fast temporary storage. Consider the 3-state outputs for bus sharing and the explicit FULL/EMPTY flags for flow control logic implementation.

FIFOs Memory Part Context

This part belongs to the Texas Instruments SN74ALS232B family of asynchronous FIFO memories. It is characterized for commercial operation from 0°C to 70°C. The device is available in multiple package options including the Plastic Small-Outline Package (DW), Plastic Chip Carriers (FN), and Standard Plastic DIPs (N).

FIFOs Memory Replacement Considerations

SN74ALS232BN

FIFOs Memory FAQ

How does the device handle full or empty conditions?

The FULL output goes low when the memory is full, preventing further writes. The EMPTY output goes low when the memory is empty, indicating no data is available for reading.

What is the effect of the RST input?

A low level on the RST input resets the internal stack-control pointers, sets EMPTY low, and sets FULL high. The Q outputs are not reset to a specific logic level.