Update: 29 September, 2023
This document describes the features and characteristics of the SN54F243 and SN74F243 quadruple bus transceivers. These transceivers are designed for asynchronous communication between data buses and offer flexible timing. They allow data transmission from the A bus to the B bus or from the B bus to the A bus based on the logic levels at the output-enable (OEBA and OEAB) inputs. The output-enable inputs can be used to disable the device, effectively isolating the buses. The dual-enable configuration allows the quadruple bus transceivers to store data by simultaneously enabling OEBA and OEAB. In this configuration, each output reinforces its input. Therefore, when both control inputs are enabled and all other data sources to the two sets of bus lines are in a high-impedance state, both sets of bus lines (eight in total) maintain their states. The 4-bit codes appearing on the two sets of buses will be identical for the ′F243. The SN54F243 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74F243 is characterized for...
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Publication date: 07 May, 2012
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PDF Link: TEXAS INSTRUMENTS SN54F243 SN74F243 QUADRUPLE BUS TRANSCEIVERS WITH 3-STATE OUTPUTS handbook PDF