JM38510/30608BEA

Shift Registers Overview

The Texas Instruments JM38510/30608BEA is a military-grade parallel-load 8-bit shift register belonging to the SN54LS165A family. It features eight direct data inputs and serial output capabilities within a 16-pin ceramic dual in-line package (CDIP). The device operates across an extended temperature range of -55°C to 125°C, utilizing LS logic standards for low power consumption. Key functional inputs include a gated clock, clock inhibit, and a shift/load control pin that enables immediate parallel data loading.

Shift Registers Feature Summary

• Provides parallel-to-serial data conversion through eight individual direct data inputs enabled by a low-level shift/load signal.
• Features complementary outputs from the eighth bit stage for versatile system integration.
• Incorporates diode-clamped inputs to minimize transmission-line effects and simplify system design.
• Utilizes a two-input positive-NOR gate for clocking, allowing one input to function as a clock-inhibit control.

Shift Registers Applications

• Parallel-to-serial data conversion in digital communication systems
• Shift register stages in military-grade computing architectures
• Data acquisition interfaces requiring direct parallel access

Shift Registers Procurement Notes

Verify the specific ordering suffix against current TI documentation, as status classifications such as NRND may apply to certain variants. Confirm compliance with MIL-PRF-38535 requirements if full parameter testing is mandated for the application environment.

Shift Registers Selection Notes

Select this component when a robust, radiation-tolerant shift register is required for harsh environments. Ensure the design accommodates the 16-pin CDIP footprint and utilizes the LS logic voltage levels. Verify that the clock frequency requirements align with the specified maximum operating limits for the LS series.

Shift Registers Part Context

This part number represents a QML-certified version of the SN54LS165A, designed for military and defense applications. It falls under the broader SN54/74LS165A family of parallel-load shift registers, offering enhanced reliability compared to standard commercial equivalents.

Shift Registers Replacement Considerations

Public confirmed substitute part numbers: JM38510/30608B2A, JM38510/30608BFA, M38510/30608B2A, M38510/30608BFA.

Shift Registers FAQ

How is parallel data loaded into the register?

Parallel data is loaded directly into the register when the shift/load (SH/LD) input is held at a low level, independent of the clock or serial input states.

What is the function of the CLK INH input?

The CLK INH input serves as a clock-inhibit function; holding it high inhibits clocking regardless of the state of the primary clock input.