74LVTH16646MEA

Buffers, Drivers, Receivers, Transceivers Overview

The 74LVTH16646MEA is a low-voltage 16-bit transceiver and register 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 systems at 5V VCC. The device features bushold data inputs to eliminate external pull-up resistors for unused inputs. It provides high-speed operation similar to 5V ABT while maintaining low power dissipation. The package is a 56-lead Shrink Small Outline Package (SSOP).

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides multiplexed transmission of data directly from the input bus or from internal storage registers.
• Each byte has separate control inputs which can be shorted together for full 16-bit operation.
• Bushold data inputs eliminate the need for external pull-up resistors to hold unused inputs.

Buffers, Drivers, Receivers, Transceivers Applications

• Low-voltage (3.3V) VCC applications requiring TTL interface to a 5V environment.
• Multiplexed transmission of data in bidirectional registered bus transceivers.
• Systems requiring live insertion/extraction with glitch-free bus loading.

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering code against the manufacturer's current database, as Fairchild part numbers may have been updated following integration into ON Semiconductor. Confirm that the SSOP package variant matches the design requirements. Ensure compliance with JEDEC standards for the 56-lead shrink small outline package. Check for any suffixes indicating tape and reel availability if required by assembly processes.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a 16-bit bidirectional registered bus transceiver is needed with 3-state outputs. It is suitable for applications requiring interface between 3.3V and 5V logic levels. The bushold feature simplifies design by removing the need for external pull-ups on unused inputs. Consider the SSOP package constraints for PCB layout and thermal management.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the 74LVT16646 and 74LVTH16646 family of low-voltage 16-bit transceivers/register with 3-state outputs. It was originally manufactured by Fairchild Semiconductor before integration into ON Semiconductor. The 'H' designation indicates the inclusion of bushold data inputs, distinguishing it from the standard LVT version.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The 74LVT16646MTD is an alternative package option (TSSOP) within the same functional family. Verify pinout compatibility and package dimensions when substituting between SSOP and TSSOP variants. Ensure the replacement part retains the bushold feature if required by the original design.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the function of the bushhold feature?

The bushold feature eliminates the need for external pull-up resistors to hold unused inputs, simplifying the circuit design.

Can this device interface between 3.3V and 5V systems?

Yes, the device is designed for low-voltage (3.3V) VCC applications but provides TTL interface capability to a 5V environment.