Texas Instruments JM38510/30109BFA

Overview

JM38510/30109BFA from Texas Instruments is a military-grade dual J-K flip-flop with complementary outputs, 16-pin CFP package, -55°C to +125°C operating temperature range, and TTL-compatible input thresholds. It serves as a synchronous edge-triggered storage element in radiation-tolerant avionics timing and control circuits.

For engineers reviewing the JM38510/30109BFA datasheet, JM38510/30109BFA pinout, JM38510/30109BFA application, or JM38510/30109BFA equivalent, key selection criteria include military QML-38535 Class B qualification, CFP hermetic packaging, dual independent J-K latch functionality, and guaranteed operation across extended temperature extremes without derating.

Technical Context

This device implements two identical, independently clocked J-K flip-flops with direct set (SD) and reset (RD) inputs, each featuring true and complemented Q/Q̅ outputs. All inputs are TTL-compatible with V_IL ≤ 0.8 V and V_IH ≥ 2.0 V at V_CC = 5 V.

It operates synchronously on the rising edge of the clock signal, with propagation delays t_PLH and t_PHL specified at 25 ns max over full temperature and voltage range. The CFP package provides hermetic sealing for high-reliability aerospace deployment.

Key Specifications

Pinout & Package

Package: 16-lead Ceramic Flatpack (CFP), Type W - hermetically sealed, metal-lid, side-brazed construction for high-reliability MIL-STD-883 environments.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual J-K flip-flop applications.

Compared with SNJ54LS109AW, JM38510/30109BFA offers identical performance and qualification but differs in manufacturer-assigned part numbering convention; versus JM38510/30109BEA, it trades CDIP accessibility for CFP hermeticity and superior long-term reliability in harsh environments.

Availability

JM38510/30109BFA is available at Aetrix Electronics and suitable for avionics sequencing, mission computer state control, and secure communication timing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for JM38510/30109BFA includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a U.S.-based semiconductor company specializing in analog, embedded processing, and high-reliability logic solutions for industrial, automotive, and defense markets.

JM38510/30109BFA belongs to TI's military logic portfolio, designed specifically to meet QML-38535 Class B requirements for aerospace and defense systems demanding guaranteed performance under extreme environmental stress.

FAQ

What is the qualification status of JM38510/30109BFA?

JM38510/30109BFA is QML-38535 Class B qualified per MIL-PRF-38535, meaning it has undergone full military screening including burn-in, temperature cycling, and radiation hardness assurance testing. This qualification confirms its suitability for high-reliability defense and space applications where failure is not an option. Each lot is traceable and certified to meet stringent reliability metrics defined in the specification.

Does JM38510/30109BFA support both synchronous and asynchronous operation?

Yes, JM38510/30109BFA supports both modes: synchronous state changes occur on the rising edge of the clock input, while asynchronous direct set (SD) and reset (RD) inputs force immediate Q output transitions independent of the clock. This dual-mode capability allows precise timing control during normal operation and failsafe initialization or recovery without waiting for clock edges - a critical feature in safety-critical avionics logic.

What is the maximum clock frequency supported by JM38510/30109BFA?

JM38510/30109BFA does not specify a maximum clock frequency in its official documentation; instead, it guarantees a maximum propagation delay of 25 ns from clock to Q output across the full -55°C to +125°C range. Based on this timing, reliable operation is ensured up to approximately 20 MHz in worst-case conditions, though actual system-level frequency depends on setup/hold time margins and load capacitance. Designers should verify timing closure using worst-case delay values from the datasheet.

Can JM38510/30109BFA be used as a drop-in replacement for commercial SN74LS109A devices?

No, JM38510/30109BFA is not a drop-in replacement for commercial SN74LS109A devices due to fundamental differences in packaging, qualification, and operating range. While functionally identical at the logic level, JM38510/30109BFA uses a hermetic CFP package and is rated for -55°C to +125°C with QML-38535 Class B screening, whereas SN74LS109A uses plastic SOIC or PDIP packages and is rated only from 0°C to +70°C. PCB layout, thermal management, and reliability validation must be requalified.

What are the voltage levels for valid logic inputs on JM38510/30109BFA?

JM38510/30109BFA follows standard LS-TTL input thresholds: a valid logic low (V_IL) is ≤ 0.8 V, and a valid logic high (V_IH) is ≥ 2.0 V, referenced to V_CC = 5 V ± 5%. These thresholds ensure robust noise immunity and interoperability with other 74LS-family components. Input currents remain within ±0.4 mA across the full operating range, minimizing loading effects on driving stages.