74ABT2245D,112

Buffers, Drivers, Receivers, Transceivers Overview

The NXP USA Inc. 74ABT2245D,112 is an octal bidirectional bus transceiver in a 20-pin plastic SO package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports temperatures from -40 °C to +85 °C. The device features non-inverting 3-State outputs with integrated 30 Ω series termination resistors. Propagation delay is typically 3.9 ns at 5 V with a 50 pF load. Output drive capability is specified as +12 mA for low state and -32 mA for high state.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Integrates 30 Ω series termination resistors in both HIGH and LOW output states to reduce line noise without requiring external components.
• Features a dedicated Direction (DIR) input pin for controlling data flow direction between A and B sides.
• Includes an active-LOW Output Enable (OE) input that allows easy cascading and system control.
• Provides power-up 3-State functionality and permits live insertion or extraction.

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address drivers
• Clock drivers
• Bus receivers and transmitters

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against current manufacturer documentation to confirm package type and temperature rating. Confirm RoHS compliance status and lifecycle stage directly with the supplier before procurement. Ensure the component matches the required 20-pin SO physical dimensions and electrical specifications for the target design.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring integrated series termination to minimize external resistor count and PCB space. It serves as a direct functional equivalent to the 74ABT245-1. Consider the 30 Ω internal resistance for impedance matching requirements on high-speed buses.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the 74ABT logic family, utilizing BiCMOS technology for high speed and low power dissipation. It is functionally identical to the 74ABT245-1, with the naming change reflecting updated industry standards for octal transceivers with built-in termination.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The datasheet explicitly identifies the 74ABT245-1 as the same device. Verify if other 74ABT245 variants with similar termination characteristics are available from alternative manufacturers.

Buffers, Drivers, Receivers, Transceivers FAQ

Does the 74ABT2245D require external termination resistors?

No, the device includes integrated 30 Ω series termination resistors in both the HIGH and LOW states of the output, making external termination unnecessary.

What is the relationship between the 74ABT2245D and the 74ABT245-1?

The 74ABT2245D is the same device as the 74ABT245-1. The part number was changed to reflect industry standards.