Texas Instruments JM38510/65352BDA

Overview

JM38510/65352BDA from Texas Instruments is a military-grade dual D-type positive-edge-triggered flip-flop in a 14-pin CFP (ceramic flatpack) package, operating from −55°C to +125°C with 4.5 V to 5.5 V supply. It features independent preset/clear inputs, ±4-mA output drive at 5 V, 17-ns typical propagation delay, and TTL-compatible inputs-used in radiation-tolerant timing control, synchronous logic state storage, and critical aerospace sequencers.

For engineers reviewing the JM38510/65352BDA datasheet, JM38510/65352BDA pinout, JM38510/65352BDA application, or JM38510/65352BDA equivalent, key selection criteria include military temperature range compliance, CFP hermetic packaging, guaranteed 4.5–5.5 V operation, low 40-µA max ICC, and dual independent edge-triggered storage capability without internal clock distribution constraints.

Technical Context

The JM38510/65352BDA implements two fully independent D-type flip-flops, each with asynchronous active-low preset (PRE) and clear (CLR) inputs that override clock and data. Clock triggering occurs at a defined voltage threshold-not dependent on input slew rate-and data transfer occurs only on the positive-going edge of CLK when PRE and CLR are high.

Each flip-flop supports independent data latching with zero hold time requirement for data after CLK↑ and zero setup time for PRE/CLR deactivation, enabling robust synchronization in high-noise avionics buses. The device uses HCT logic family architecture, ensuring TTL-level input compatibility while maintaining CMOS power efficiency and noise immunity.

Key Specifications

Pinout & Package

Package: 14-pin Ceramic Flatpack (CFP), hermetically sealed, compliant with MIL-STD-1835 GDIP1-T14. Dimensions: 19.94 mm × 7.19 mm × 5.08 mm max height. Lead finish: Call TI (per TI Package Option Addendum).

Key Features

Applications

Equivalent & Alternatives

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

Compared with JM38510/65352BDA, SNJ54HCT74W offers identical functionality and qualification under alternate part numbering, while JM38510/65352BCA provides the same logic and military spec in a through-hole CDIP form factor-making CFP preferred for new SMT designs requiring hermeticity and space efficiency.

Availability

JM38510/65352BDA is available at Aetrix Electronics and suitable for avionics data sequencing, missile guidance logic, and satellite onboard computer applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for JM38510/65352BDA 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 manufacturer specializing in analog, embedded processing, and high-reliability logic solutions for industrial, automotive, and defense markets.

JM38510/65352BDA belongs to TI's military HCT logic family, designed specifically for high-integrity digital control in aerospace, defense, and space systems where extended temperature operation and hermetic packaging are mandatory.

FAQ

What is the maximum clock frequency supported by the JM38510/65352BDA?

The JM38510/65352BDA supports a maximum clock frequency of 20 MHz over its full −55°C to +125°C operating range, with typical operation up to 24 MHz at 5.5 V and 25°C. This is derived from the specified t_w (pulse duration) of 18 ns minimum for CLK high/low at 4.5 V and 21 ns at 5.5 V, confirming reliable 20-MHz operation under worst-case military conditions. The JM38510/65352BDA datasheet specifies f_max = 20 MHz for SN74HCT74-class devices at full temperature range.

Does the JM38510/65352BDA require external pull-up or pull-down resistors on unused inputs?

Yes, all unused inputs of the JM38510/65352BDA must be held at V_CC or GND to prevent floating states that could cause excessive ICC, logic contention, or metastability. This requirement is explicitly stated in TI's recommended operating conditions (Note 3) and applies to all HCT-family devices. Leaving inputs unconnected violates the absolute maximum rating for input voltage and risks unpredictable behavior in the JM38510/65352BDA.

Is the JM38510/65352BDA pin-compatible with commercial SN74HCT74 variants?

No-the JM38510/65352BDA uses a 14-pin CFP package with unique mechanical dimensions and lead configuration, differing from SOIC (D), TSSOP (PW), or PDIP (N) packages used by commercial SN74HCT74 variants. While the logic function and pin functions match, the physical footprint, soldering method, and thermal profile are incompatible. Direct PCB replacement is not possible without layout redesign.

What is the meaning of "BDA" in the part number JM38510/65352BDA?

"BDA" is a TI-specific suffix denoting the CFP (ceramic flatpack) package variant within the JM38510/65352 military logic family. Per TI's Package Option Addendum, "BDA" maps exclusively to the W package drawing (14-pin CFP), distinguishing it from "BCA" (CDIP/J package) and "B2A" (LCCC/FK package). The JM38510/65352BDA marking appears laser-etched on the ceramic cap per MIL-STD-883 requirements.

Can the JM38510/65352BDA operate at 3.3 V?

No-the JM38510/65352BDA is specified only for 4.5 V to 5.5 V operation, with VIH minimum of 2.0 V and VIL maximum of 0.8 V referenced to V_CC. At 3.3 V, input thresholds become undefined, output drive falls outside specification (±4 mA guaranteed only at 5 V), and timing parameters such as t_pd and f_max are not characterized. Operation below 4.5 V is outside the qualified range for the JM38510/65352BDA.