Texas Instruments JM38510/65302SCA

Overview

JM38510/65302SCA from Texas Instruments is a dual D-type positive-edge-triggered flip-flop with independent preset (PRE) and clear (CLR) inputs, operating across –55°C to +125°C. It features 14-pin CDIP packaging, 2 V to 6 V supply voltage range, typical propagation delay of 15 ns at 5 V, ±4-mA output drive, and low 40-µA maximum ICC. It serves as a synchronous storage element in radiation-tolerant military timing and control circuits.

For engineers reviewing the JM38510/65302SCA datasheet, JM38510/65302SCA pinout, JM38510/65302SCA application, or JM38510/65302SCA equivalent, this page delivers verified electrical specs, validated pin functions, confirmed military-grade operating conditions, and two rigorously cross-referenced alternative parts for QML-38510-compliant designs.

Technical Context

The JM38510/65302SCA implements two identical CMOS D-type flip-flops, each with asynchronous active-low PRE and CLR inputs that override clocked data transfer. Its edge-triggered operation responds to the positive-going transition of CLK, independent of input rise time, and maintains state stability during hold-time intervals.

It complies with QML-38510 Class S requirements, supports wide-voltage operation (2–6 V), exhibits ±2000-V HBM ESD rating, and delivers rail-to-rail output swing with 10-LSTTL load drive capability - all within its hermetically sealed CDIP package rated for –55°C to +125°C ambient operation.

Key Specifications

Pinout & Package

Package: 14-pin Ceramic Dual-In-Line Package (CDIP), body size 21.30 mm × 7.60 mm, hermetically sealed, lead finish unspecified per TI documentation, MSL not applicable.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SNJ54HC74J and SN54HC74W, JM38510/65302SCA provides the highest level of process and test screening per QML-38510 Appendix A, making it the sole choice for programs requiring documented lot traceability, extended reliability testing, and full compliance with DoD assurance requirements.

Availability

JM38510/65302SCA is available at Aetrix Electronics and suitable for avionics timing control, missile guidance sequencing, and spacecraft onboard telemetry requiring stable component supply under extended temperature and radiation environments.

Supply support for JM38510/65302SCA 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 global semiconductor leader specializing in analog, embedded processing, and high-reliability logic solutions for aerospace, defense, and industrial markets.

JM38510/65302SCA belongs to TI's QML-38510-certified logic family, engineered specifically for mission-critical systems demanding guaranteed performance across extreme environmental stress and long-term reliability.

FAQ

What is the maximum clock frequency supported by JM38510/65302SCA at 5 V?

JM38510/65302SCA supports a maximum clock frequency of 25 MHz at VCC = 5 V and TA = 25°C, as specified in the switching characteristics table. This limit derives from propagation delay (tpd ≤ 44 ns) and setup/hold timing constraints. Operation above this frequency risks metastability or incorrect data capture and is not guaranteed across the full –55°C to +125°C temperature range.

Does JM38510/65302SCA require external pull-up resistors on PRE and CLR pins?

No, JM38510/65302SCA does not require external pull-up resistors on PRE and CLR pins when actively driven. However, per TI application guidance, unused PRE or CLR inputs must be tied to VCC (not left floating) to prevent undefined states. The device's CMOS inputs draw ≤1 µA, so standard 10-kΩ pull-ups suffice if active driving is unavailable.

Is JM38510/65302SCA compatible with 3.3-V logic systems?

Yes, JM38510/65302SCA operates reliably at VCC = 3.3 V, with verified VIH = 2.31 V and VIL = 0.99 V per recommended conditions. Its inputs tolerate up to 5.5 V, enabling safe interfacing with 5-V controllers. Output VOH exceeds 3.1 V and VOL remains below 0.33 V at 3.3 V, ensuring robust noise margins with 3.3-V CMOS loads.

What is the meaning of "SCA" in the part number JM38510/65302SCA?

The "SCA" suffix in JM38510/65302SCA denotes a specific QML-38510 screening level and package variant: "S" indicates Class S (highest reliability tier), "C" specifies CDIP packaging, and "A" designates the initial revision of this screened configuration per MIL-PRF-38535. It is not a generic suffix but a controlled identifier tied to test documentation and lot traceability.

Can JM38510/65302SCA be used as a divide-by-2 counter?

Yes, JM38510/65302SCA can implement a divide-by-2 counter by connecting Q to D and using the clock input directly. With PRE and CLR held high, each positive clock edge toggles the output state. This configuration is explicitly supported in TI's functional mode table and verified in typical application circuits, delivering clean 50% duty-cycle output with tpd-limited jitter.