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Texas Instruments JM38510/65803BFA
- Part No.:
- JM38510/65803BFA
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- -
- Datasheet:
-
JM38510/65803BFA.pdf
- Description:
- DECODER/DRIVER, HC/UH SERIES
- Quantity:
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Inventory:135
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Product details
Overview
JM38510/65803BFA from Texas Instruments is a radiation-tolerant, high-speed dual 2-line-to-4-line decoder/demultiplexer in CFP (W) package, operating across −55°C to +125°C. It features dual independent decoders, active-low enable inputs, ±4-mA output drive at 5 V, typical propagation delay of 10 ns at 4.5 V, and wide 2-V to 6-V supply range - deployed in military avionics data-routing and memory decoding subsystems.
For engineers reviewing the JM38510/65803BFA datasheet, JM38510/65803BFA pinout, JM38510/65803BFA application, or JM38510/65803BFA equivalent, key selection criteria include its QML-38510 qualification, CFP-16 thermal performance (θJA = 82°C/W), dual-enable architecture for cascaded decoding, and guaranteed operation under extended temperature and radiation environments.
Technical Context
The JM38510/65803BFA implements two fully buffered, independent 2-to-4 line decoders with active-low enables (1G, 2G), each accepting binary-select inputs (A, B) to assert one of four active-low outputs (Y0–Y3). Its CMOS design ensures low input current (≤1 µA) and high noise immunity across the full military temperature range.
Each decoder operates with fully decoded logic per function table: when G = L, outputs follow Yn = ¬(A⊕B) mapping with active-low polarity; when G = H, all outputs remain high. Input transition times are specified down to 400 ns at 6 V, supporting synchronization with fast memory enable paths in hardened systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 6 V - supports direct interface with legacy 5-V TTL and modern low-voltage logic without level-shifting. |
| Propagation Delay (tpd) | 12 ns max at 6 V (G→Y), 30 ns max at 4.5 V - enables sub-33-MHz system clock domain alignment in decoder-critical timing paths. |
| Output Drive Capability | ±4 mA at 5 V - sufficient to directly drive 10 LSTTL loads or interface with standard 5-V bus receivers. |
| Input Current (II) | ±1 µA max at 6 V - minimizes loading on upstream logic and preserves signal integrity in high-impedance control lines. |
| Operating Temperature | −55°C to +125°C - qualified per MIL-PRF-38535 Class B for deployment in airborne, space-qualified, and ground-mobile defense platforms. |
| Package Thermal Impedance | θJA = 82°C/W (CFP-W) - enables reliable power dissipation up to 160 µA ICC max without external heatsinking in conduction-cooled enclosures. |
| Logic Family | High-Speed CMOS (HC) - provides TTL-compatible voltage thresholds while delivering CMOS-level static power efficiency. |
Pinout & Package
Package: Ceramic Flatpack (CFP), 16-pin, hermetically sealed, lead-finish A42, qualified per MIL-STD-883.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 5, 6, 12, 13, 14, 15 | Decoder Inputs/Outputs | Pins 1G, 1A, 1B, 1Y0–1Y3, 2G, 2A, 2B, 2Y0–2Y3 - support independent dual-decode or cascaded 3-to-8 expansion via enable chaining. |
| 8 | GND | Signal reference plane - requires low-inductance connection to system ground plane to maintain noise margin in high-dI/dt switching. |
| 16 | VCC | Positive supply - must be bypassed locally with ≥0.1 µF ceramic capacitor to suppress supply transients during simultaneous output transitions. |
| 4, 7, 9–11, 16 | No Internal Connection (NC) | Unused pins - left unconnected per TI datasheet; no internal circuitry attached; may be grounded or floated per board layout constraints. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 2-to-4 decoders | Enables parallel address decoding for two memory banks or I/O port groups without inter-stage delay penalty. |
| Active-low enable inputs (1G, 2G) | Allows use as demultiplexer: G serves as data input while A/B select output channel - eliminates need for external gating logic. |
| Wide 2-V to 6-V supply range | Permits single-supply operation across mixed-voltage systems (e.g., 3.3-V FPGA control + 5-V peripheral bus). |
| Low ICC (80 µA max) | Reduces standby power in always-on mission computers and telemetry controllers where battery life or thermal budget is constrained. |
| QML-38510 Class B qualification | Guarantees screening, testing, and traceability per MIL-PRF-38535 - required for flight-critical and strategic defense electronics. |
Applications
| Avionics Memory Decoding | Tactical Radios Address Routing |
|---|---|
|
Use Scenario: Selecting among multiple SRAM or PROM banks in a radar processor's real-time memory map. IC Role / Device Role / Timing Role: Dual decoder routes 2-bit address subsets to four memory chip-select lines with <30 ns worst-case delay at 4.5 V. Use Value: Eliminates timing skew between bank accesses and maintains deterministic memory latency under −55°C cold-soak and +125°C engine-bay conditions. |
Use Scenario: Routing digital audio/data streams to four independent RF modulation paths in a software-defined radio transceiver. IC Role / Device Role / Timing Role: Functions as synchronous 1:4 demultiplexer using 1G as serial data input and 1A/1B as channel select. Use Value: Enables zero-latency channel switching without external latches, preserving symbol timing integrity in OFDM-based waveforms. |
| Missile Guidance Interface Logic | Secure Crypto Module Control |
|
Use Scenario: Enabling discrete sensor interface ICs (e.g., ADCs, DACs) based on guidance mode commands in inertial navigation units. IC Role / Device Role / Timing Role: Provides fault-isolated enable signals to four analog front-end channels, with each decoder independently controlled. Use Value: Supports graceful degradation: failure of one decoder leaves the other functional, preserving partial sensor coverage during fault conditions. |
Use Scenario: Selecting among four cryptographic algorithm accelerators (AES, SHA, ECC, RNG) within a FIPS-140-2 Level 3 module. IC Role / Device Role / Timing Role: Generates mutually exclusive enable pulses synchronized to master crypto clock edge to prevent concurrent accelerator activation. Use Value: Prevents power supply collapse and electromagnetic side-channel leakage caused by simultaneous high-current switching of multiple accelerators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 2-to-4 decoder applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SNJ54HC139W | Same CFP-16 package, identical pinout and electrical specs; differs only in QML screening level (Class S vs Class B) and lot traceability documentation. | Approved for non-flight-critical ground test equipment but not certified for launch-vehicle avionics per DoD directives. | Select SNJ54HC139W only when full QML-38510 Class B documentation and radiation lot acceptance testing are not required. |
| JM38510/65803BEA | Identical functionality and qualification level, but packaged in CDIP-16 (J) instead of CFP-16 (W); θJA = 67°C/W vs 82°C/W. | Better thermal performance in natural-convection environments; less robust against mechanical shock and hermeticity requirements than CFP. | Choose JM38510/65803BEA when board-level vibration tolerance is lower priority than thermal headroom in chassis-mounted systems. |
Compared with SNJ54HC139W and JM38510/65803BEA, the JM38510/65803BFA delivers optimal balance of radiation-hardened reliability, hermetic CFP packaging for high-reliability aerospace deployments, and verified performance across the full −55°C to +125°C military temperature range without derating.
Availability
JM38510/65803BFA is available at Aetrix Electronics and suitable for avionics memory decoding, tactical radio address routing, and missile guidance interface logic requiring stable component supply under extended temperature and radiation-hardened conditions.
Supply support for JM38510/65803BFA 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 defense, space, and industrial markets.
The JM38510/65803BFA belongs to TI's QML-38510-certified HC logic family, engineered specifically for high-speed, radiation-tolerant decoding in mission-critical military and aerospace systems where long-term reliability and environmental resilience are mandatory.
FAQ
What is the maximum operating temperature for the JM38510/65803BFA?
The JM38510/65803BFA is rated for continuous operation from −55°C to +125°C, meeting MIL-PRF-38535 Class B requirements. This specification is validated through temperature cycling, burn-in, and parametric testing across the full range - critical for deployment in jet engine bays, satellite payload compartments, and armored vehicle electronics.
Does the JM38510/65803BFA support 3.3-V logic interfaces?
Yes, the JM38510/65803BFA operates reliably at 3.3 V supply, with guaranteed VIH = 2.0 V min and VIL = 1.0 V max per recommended operating conditions. Its HC logic family ensures compatibility with 3.3-V microcontrollers and FPGAs while maintaining full noise margin and propagation delay predictability.
Is the JM38510/65803BFA pin-compatible with commercial SN74HC139 variants?
No - the JM38510/65803BFA uses a 16-pin CFP (W) package with specific NC pin assignments (pins 4, 7, 9–11), differing from SOIC (D), TSSOP (PW), or PDIP (N) footprints. Electrical pin functions match the SN74HC139 logic diagram, but mechanical layout and thermal pad requirements are unique to the CFP package.
What is the radiation tolerance level of the JM38510/65803BFA?
The JM38510/65803BFA is QML-38510 Class B qualified, which includes total ionizing dose (TID) testing to ≥100 krad(Si) and single-event effect (SEE) characterization. While not explicitly rated for space-grade TID >300 krad, its process and screening meet DoD requirements for tactical and strategic defense platforms exposed to transient radiation environments.
Can the JM38510/65803BFA be used as a demultiplexer?
Yes - the active-low enable inputs (1G, 2G) function as data inputs in demultiplexing mode. With A/B selecting the output line and G driving data, the JM38510/65803BFA performs 1:4 demux operation with guaranteed tpd ≤30 ns at 4.5 V, making it suitable for time-critical signal routing in secure comms and EW systems.
JM38510/65803BFA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Circuit:
- -
- Independent Circuits:
- -
- Current - Output High, Low:
- -
- Voltage Supply Source:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
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- Mounting Type:
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- Supplier Device Package:
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JM38510/65803BFA FAQ
1.How can I place an order for JM38510/65803BFA through Aetrix?
Please submit a Request for Quotation (RFQ) for JM38510/65803BFA on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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The price and inventory of JM38510/65803BFA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/65803BFA is usually 5 days.
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JM38510/65803BFA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JM38510/65803BFA order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for JM38510/65803BFA?
For technical support, including JM38510/65803BFA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/65803BFA requirements.
6.How does Aetrix verify that JM38510/65803BFA is sourced from the original manufacturer or authorized distributors?
All JM38510/65803BFA products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that JM38510/65803BFA meets industry standards.
7.What is the process for return or replacement of JM38510/65803BFA?
All JM38510/65803BFA units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/65803BFA, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The JM38510/65803BFA part is unused and in its original packaging.
Return procedure for JM38510/65803BFA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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