JM38510/65602BRA

Overview

The JM38510/65602BRA is a military-grade CMOS octal buffer and line driver manufactured by National Semiconductor. It features eight non-inverting channels with 3-state outputs, designed for high-speed digital signal transmission in harsh environments. The device operates within a supply voltage range of 4.5V to 5.5V, ensuring compatibility with standard HCT logic families. It utilizes a 20-lead ceramic dual in-line package (CDIP) suitable for through-hole mounting. Key performance metrics include a maximum propagation delay of 45ns at 4.5V and 40ns at 5.5V under specified load conditions, with an absolute maximum delay of 79ns. The component supports a wide operating temperature range from -55°C to +125°C.

Feature Summary

• Military-grade construction certified to MIL-PRF-38510 standards for enhanced reliability
• CMOS technology providing low power consumption and high noise immunity
• Octal configuration with tri-state outputs for efficient bus management
• Wide thermal stability enabling operation in extreme environmental conditions

Applications

• Military avionics systems requiring radiation-hardened or high-reliability logic components
• Spacecraft data handling and telemetry control units
• Harsh environment industrial computing and defense communication equipment
• High-speed digital signal buffering in mission-critical embedded systems

Procurement Notes

Verify the specific suffix BRA against the manufacturer's current datasheet to confirm pinout and electrical specifications match your design requirements. Ensure that the procurement channel provides valid traceability documentation, including lot traceability and compliance with MIL-PRF-38510 quality standards. Confirm that the component is sourced as new original stock to avoid counterfeit risks associated with military-grade parts. Check for any recent obsolescence notices or lifecycle changes from National Semiconductor or Texas Instruments.

Selection Notes

Select this component when designing systems that require robust, high-speed buffering with strict environmental tolerance limits. The HCT-compatible input structure allows direct interfacing with standard TTL or CMOS logic levels without additional level shifting circuitry. Consider the CDIP package dimensions and thermal characteristics during PCB layout to ensure adequate clearance and heat dissipation. Evaluate the 3-state output capability to determine if bus arbitration logic is required for multi-driver configurations in your specific application architecture.

Part Context

This part belongs to the National Semiconductor family of high-speed CMOS logic devices, now managed under Texas Instruments following acquisition. The JM38510 designation indicates compliance with the Military Standard for Microcircuits, Class B or K quality levels. These components are engineered for long-term availability and stability in defense and aerospace sectors where commercial alternatives may lack sufficient ruggedness or lifetime support guarantees.

Replacement Considerations

Check for equivalent parts such as the SN54HCT125 or SN54HCT126 from Texas Instruments, ensuring they meet the same military qualification standards. Verify that any substitute maintains identical pinout, voltage ranges, and propagation delays. Confirm that the replacement is available in a compatible ceramic package if hermetic sealing is required for the application.