Description

The 74F543N is an octal registered transceiver in the Buffer/Driver/Transceiver category of electronic components. It has two sets of data that can flow in either direction and separate latch enable (LEAB, LEBA) and enable (OEAB, OEBA) inputs for independent control of inputting and outputting data. It has a noninverting data path, and the A outputs are guaranteed to sink 20 mA while the B outputs are rated for 64 mA.

Specifications and features

• Combines 74F245 and 74F373 type functions in one chip
• 8-bit octal transceiver
• Non-inverting
• Back-to-back registers for storage
• Separate controls for data flow in each direction
• Glitchless outputs during 3-state power up or power down operation
• High impedance outputs in power off state
• A outputs sink 24 mA and source 3.0 mA
• B outputs sink 64 mA and source 15 mA
• ESD protection > 4000 volts

Application Scenarios

The MC74F543 Octal Registered Transceivers are widely used in the electronics industry, particularly in communication and computing devices, such as routers, switches, high-speed servers, and intelligent home appliances.

Comparison

• Combines 74F245 and 74F373 type functions in one chip, which reduces the need for external components and saves space on the printed circuit board (PCB).
• Glitchless outputs during 3-state power up or power down operation.
• High impedance outputs in power off state.
• ESD protection > 4000 volts.

• The 74F543N has non-inverting data path only, which may not be suitable for some applications that require inverting data path.
• The A outputs can only sink 24 mA and source 3.0 mA while the B outputs can sink more current, which may limit the range of applications.