SNJ54LVTH18502AHV

Overview

The SNJ54LVTH18502AHV is a military-grade, 18-bit universal bus transceiver from the Texas Instruments SCOPE family. It operates within a supply voltage range of 2.7 V to 3.6 V and supports bidirectional data transfer across two 9-bit ports. The device features three-state outputs and is designed for high-speed applications requiring low power consumption. It is housed in a 64-pin Thin Quad Flatpack (TQFP) package with a thermal pad, suitable for surface-mount assembly. The component is qualified for extended industrial temperature ranges, ensuring reliable performance in demanding environments.

Feature Summary

• Provides 18-bit bidirectional data transmission capability between external buses and internal logic circuits
• Features three-state outputs that isolate the device when disabled to prevent bus contention
• Designed for low-voltage operation compatible with 3.3 V systems while maintaining signal integrity
• Military-grade qualification ensures reliability under extreme environmental conditions

Applications

• High-density memory interface architectures requiring wide data paths
• Military avionics and defense communication systems
• Industrial control networks with strict reliability standards
• Automotive electronic control units operating in harsh environments

Procurement Notes

Verify the specific suffix 'HV' against official Texas Instruments documentation to confirm pinout compatibility and electrical characteristics. Ensure the procurement channel provides traceability for military-grade components. Confirm RoHS compliance status if required by your manufacturing process. Validate that the supplier offers genuine parts with proper handling protocols for moisture-sensitive devices.

Selection Notes

Select this component when an 18-bit wide bus interface is necessary within a 3.3 V logic system. It is appropriate for designs requiring military-grade durability and low power dissipation. Consider the TQFP-64 package constraints regarding PCB space and thermal management. Compare against standard commercial grades if environmental exposure is less severe to optimize cost.

Part Context

This part belongs to the SNJ54LVTH18502A series, which represents specialized function logic within the Texas Instruments portfolio. The 'SNJ' prefix indicates a military-grade ceramic or plastic DIP/TQFP variant, distinguishing it from commercial counterparts. The SCOPE family focuses on high-performance bus transceivers for complex digital systems.

Replacement Considerations

Direct replacements include other SNJ54LVTH18502 variants with different packaging options such as the SNJ54LVTH18502AJ. Verify pin-to-pin compatibility before substitution. Commercial equivalents like the SN74LVTH18502 may be used if military qualification is not required.