74ABT162500DLRG4

Overview

The SN74ABT162500DLRG4 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 on a single 4.5 V to 5.5 V supply voltage and supports data flow in transparent, latched, or clocked modes via dedicated control inputs. It features a flow-through architecture optimized for PCB layout and includes B-port outputs with equivalent 25-Ω series resistors to minimize signal overshoot and undershoot.

Feature Summary

• Combines D-type latches and flip-flops to enable transparent, latched, and clocked data operation modes
• B-port outputs incorporate internal series resistors to reduce signal overshoot and undershoot without external components
• High-impedance state maintained during power-up and power-down sequences to prevent bus contention
• Flow-through architecture designed to optimize printed circuit board layout efficiency

Applications

• High-speed data bus interfaces requiring flexible mode selection
• Memory-to-memory or memory-to-I/O transfers in computer systems
• Buffering applications utilizing the integrated output impedance characteristics
• Clock-controlled data transfer paths in digital logic circuits

Procurement Notes

Verify the specific ordering suffix 'RG4' against current manufacturer documentation to confirm compliance status and package details. Ensure the component matches the required SSOP-56 physical dimensions and lead finish specifications. Confirm that the operating temperature range aligns with system requirements before finalizing procurement orders.

Selection Notes

Select this component when an 18-bit width is necessary for bus architectures. The inclusion of both latch and flip-flop functionality provides versatile timing control options compared to standard transceivers. Consider the integrated series resistance on the B-port if signal integrity optimization is required without adding discrete components to the design.

Part Context

This part belongs to the Widebus family of universal bus transceivers from Texas Instruments. It represents a high-density solution combining multiple logic functions into a single package. The ABT logic series indicates BiCMOS technology, offering a balance between speed and power consumption suitable for complex digital systems.

Replacement Considerations

Check for SN74ABT162500DL variants with different packaging or suffixes. Verify pin compatibility and electrical parameters against existing designs before substitution.