SN74ABT162500DL

Universal Bus Functions Overview

The SN74ABT162500DL is an 18-bit universal bus transceiver with 3-state outputs manufactured by Texas Instruments. It utilizes state-of-the-art EPIC-II BiCMOS design to significantly reduce power dissipation. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range from -40°C to +85°C. Key electrical characteristics include a typical propagation delay of 3.4 ns at VCC = 5 V, high-level output current of -12 mA for the B port, and low-level output current of 12 mA for the B port. The A port provides higher drive capability with up to 64 mA low-level output current. The component is housed in a 56-pin SSOP (DL) package.

Universal Bus Functions Feature Summary

• Combines D-type latches and D-type flip-flops to enable transparent, latched, or clocked data flow modes.
• B-port outputs feature equivalent 25-ohm series resistors to minimize overshoot and undershoot without external components.
• Ensures high-impedance state during power-up and power-down sequences to prevent bus contention.
• Flow-through architecture optimizes printed circuit board layout efficiency.

Universal Bus Functions Applications

• High-speed data acquisition systems requiring buffered and latched I/O
• Clock distribution networks utilizing universal bus transceiver capabilities
• Memory buffer applications involving parallel data transfer

Universal Bus Functions Procurement Notes

Verify the specific ordering suffix 'DL' corresponds to the 56-pin plastic shrink small-outline package. Confirm that the procurement quantity aligns with the standard tube packaging specification of 20 units per tube. Ensure the application environment remains within the specified commercial temperature limits of -40°C to +85°C. Validate that the system power supply strictly adheres to the 4.5 V to 5.5 V operating range to maintain signal integrity and timing specifications.

Universal Bus Functions Selection Notes

Select this component when an 18-bit wide interface is required alongside integrated data storage capabilities. The inclusion of both latches and flip-flops allows flexible configuration for transparent or synchronous operation. Consider the B-port's internal series resistance for applications demanding reduced signal reflections on transmission lines. Evaluate the trade-off between the higher drive strength of the A port and the controlled slew rate of the B port based on the specific load requirements.

Universal Bus Functions Part Context

This device belongs to the Widebus family of logic products from Texas Instruments. It is part of the SN74ABT series, which employs BiCMOS technology for high-speed performance with low power consumption. The SN74ABT162500 serves as a specialized variant offering 18 bits of data path width, distinguishing it from standard 8-bit or 16-bit bus transceivers in the same logical family.

Universal Bus Functions Replacement Considerations

SN74ABT162500DLG4