JM38510/30906B2A

Overview

The JM38510/30906B2A is a quadruple 2-line to 1-line data selector/multiplexer manufactured by Texas Instruments. It operates within an extended temperature range of -55°C to 125°C and features a ceramic metal-sealed cofired package with 20 pins. The device supports a maximum frequency of 35 MHz and draws up to 19 mA at nominal voltage. Key electrical characteristics include a load capacitance of 15 pF, three-state output characteristics, and a terminal pitch of 1.27 mm.

Feature Summary

• Quadruple configuration providing four independent 2-to-1 multiplexing channels
• Three-state outputs for bus-oriented applications
• Ceramic metal-sealed cofired construction for environmental durability

Applications

• High-reliability military aerospace signal routing
• Data acquisition systems requiring extended temperature operation
• Industrial control logic interfaces

Procurement Notes

Verify the specific suffix B2A against official Texas Instruments documentation to confirm pinout and electrical specifications. Ensure the procurement source provides traceability to MIL-PRF-38534 standards. Confirm that the component meets the required thermal and radiation hardness levels for the intended deployment environment before finalizing orders.

Selection Notes

Select this component when a quadruple multiplexer with three-state outputs is required in harsh environments. The ceramic package offers superior hermeticity compared to plastic alternatives. Consider the 35 MHz speed limit and 19 mA current consumption during system power budgeting. Verify compatibility with existing TTL logic families used in the design.

Part Context

This part belongs to the JM38510 series, which covers various high-reliability logic functions under MIL-PRF-38534 specifications. It serves as a commercial equivalent to the SN54LS257B but with enhanced packaging and testing standards suitable for defense and space applications.

Replacement Considerations

The SN54LS257B is a documented functional substitute. Verify that the replacement meets all mechanical and environmental requirements of the original design.