74LVTH16543MEAX

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74LVTH16543MEAX is a low-voltage 16-bit registered transceiver with 3-STATE outputs, fabricated using advanced BiCMOS technology. It operates within a supply voltage range of 2.7V to 3.6V and supports TTL interface capability to 5V environments. The device features separate latch enable and output enable inputs for independent control of data flow direction. It includes bushold data inputs to eliminate the need for external pull-up resistors. The component is housed in a 56-lead Shrink Small Outline Package (SSOP) and provides high-speed operation similar to 5V ABT while maintaining low power dissipation.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Contains two sets of D-type latches for temporary storage of data flowing in either direction
• Bushold data inputs eliminate the need for external pull-up resistors to hold unused inputs
• Power Up/Down high impedance provides glitch-free bus loading
• Outputs source/sink -32 mA/+64 mA

Buffers, Drivers, Receivers, Transceivers Applications

• Low-voltage (3.3V) VCC applications requiring TTL interface to 5V environment
• Systems permitting live insertion/extraction
• Bus drivers requiring independent control of inputting and outputting

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the package type matches the required footprint, as this part number corresponds to the SSOP variant. Confirm that the bushold feature is necessary for the design, as the non-bushold version (74LVT16543) exists. Ensure operating conditions remain within the specified 2.7V to 3.6V supply voltage range. Check for any specific tape and reel requirements if applicable.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a 16-bit registered transceiver with 3-STATE outputs is needed for low-voltage systems interfacing with 5V logic. The bushold feature simplifies design by removing external pull-ups for unused inputs. Consider the SSOP package constraints regarding board space and thermal performance. Verify compatibility with existing control signals for latch and output enables.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the 74LVTH series of low-voltage CMOS logic components. It is functionally compatible with the 74 series 16543 but optimized for lower voltage operation. The 'H' suffix indicates the inclusion of bushold inputs, distinguishing it from the standard LVT version. It is manufactured using BiCMOS technology for high speed and low power.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The 74LVT16543MEA is a functional substitute without the bushold feature. Other 16-bit registered transceivers from different manufacturers may require verification of pinout and electrical characteristics.