74LVT16245MTD

Overview

The onsemi 74LVT16245MTD is a low-voltage 16-bit bidirectional bus transceiver featuring 3-STATE outputs. It operates within a supply voltage range of 2.7V to 3.6V and supports input voltages up to 5.5V, enabling TTL interface compatibility in 5V environments. The device utilizes advanced BiCMOS technology for high-speed operation with low power dissipation. It includes byte-controlled direction inputs (T/R) and output enable pins (OE). Propagation delays are specified between 1.3ns and 3.9ns at 3.3V. Outputs can source/sink up to ±32mA. It is housed in a 48-lead TSSOP package.

Feature Summary

• Supports live insertion and extraction without causing bus contention
• Provides glitch-free bus loading during power-up and power-down cycles
• Features byte-controlled architecture allowing independent or combined 16-bit operation

Applications

• Bus-oriented data transmission systems
• Low-voltage memory mapping applications
• Interface bridging between 3.3V logic and 5V TTL environments

Procurement Notes

Verify the specific ordering code suffix to confirm the package type and reel configuration. Ensure the design accounts for the 5.5V maximum input voltage tolerance when interfacing with higher voltage logic levels. Confirm that the thermal characteristics of the TSSOP package meet the system's heat dissipation requirements under continuous operation conditions.

Selection Notes

Select this component for designs requiring robust bidirectional data transfer between different voltage domains. The 5.5V tolerant inputs allow direct connection to legacy 5V systems without level shifters. Consider the 32mA drive capability for driving moderate capacitive loads on the bus lines efficiently.

Part Context

This part belongs to the LVT logic family, designed specifically for low-voltage digital applications. It serves as a functional equivalent to standard 5V ABT series devices but offers reduced power consumption. The MTD suffix indicates the Thin Shrink Small Outline Package format, suitable for space-constrained printed circuit board layouts.

Replacement Considerations

The 74LVTH16245MTD is functionally compatible but includes bushold inputs. Verify if the bushold feature is required or if it introduces unintended signal holding behavior in the specific application circuit.