74LVT162245BDGG,51

Overview

The Nexperia 74LVT162245BDGG,51 is a 3.3 V 16-bit bus transceiver with integrated 30 Ω termination resistors and 3-state outputs. It operates within a supply voltage range of 2.7 V to 3.6 V and supports overvoltage tolerant inputs up to 5.5 V. The device features BiCMOS technology for high speed and output drive capabilities of ±12 mA. It includes bus-hold data inputs to eliminate external pull-up resistors and IOFF circuitry for partial power-down mode operation. The component is specified for ambient temperatures from -40 °C to +85 °C and is housed in a TSSOP48 (SOT362-1) package.

Feature Summary

• Integrated 30 Ω series termination resistors on all outputs to minimize signal reflections without external components
• Bus-hold data inputs maintain logic states for unused pins, removing the need for external pull-up resistors
• IOFF circuitry disables outputs during power-down to prevent potentially damaging backflow currents
• Overvoltage tolerant inputs allow direct interfacing with 5.5 V devices while operating at lower supply voltages

Applications

• High-speed bidirectional bus interfaces requiring controlled impedance
• Systems utilizing live insertion or extraction protocols
• Mixed-voltage environments connecting 3.3 V logic to 5 V buses
• Partial power-down applications requiring isolation of powered-off sections

Procurement Notes

Verify the specific ordering suffix matches the required package variant and temperature grade. Confirm that the 30 Ω internal termination aligns with the target system's transmission line requirements. Ensure input voltage levels do not exceed the 5.5 V tolerance limit under all operating conditions. Check for any recent product change notices regarding pinout or electrical specifications before finalizing procurement.

Selection Notes

Select this component when designing 3.3 V systems that require built-in termination to reduce board space and component count. It is suitable for applications needing robust protection against backflow current during partial power-down scenarios. Consider its BiCMOS speed characteristics for high-frequency data transfer needs. Verify compatibility with TTL logic levels if interfacing with legacy components.

Part Context

This part belongs to the 74LVT family of low-voltage transistor-transistor logic devices. It serves as a specialized variant of standard bus transceivers by incorporating internal termination resistors. This integration distinguishes it from similar parts like the 74LVT16245, which lacks built-in termination. It is designed for high-performance digital communication links where signal integrity is critical.

Replacement Considerations

Direct substitutes include other 74LVT162245 variants with different packaging options such as the 74LVT162245DL. Cross-family replacements like the 74LVC162245 are not equivalent due to the absence of internal termination resistors and different voltage tolerances.