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Texas Instruments JM38510/33701BFA
- Part No.:
- JM38510/33701BFA
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- -
- Datasheet:
-
JM38510/33701BFA.pdf
- Description:
- 54F138 3-LINE TO 8-LINE DECODERS
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Product details
Overview
JM38510/33701BFA from Texas Instruments is a military-grade 3-line-to-8-line decoder/demultiplexer IC designed for high-speed memory decoding and data routing in ruggedized systems. It features three enable inputs (G1, G2A, G2B), active-low outputs, propagation delays as low as 2.7 ns (tPLH), operates across –55°C to 125°C, and uses a 16-pin CFP (Ceramic Flatpack) package with gold-plated leads.
For engineers reviewing the JM38510/33701BFA datasheet, JM38510/33701BFA pinout, JM38510/33701BFA application, or JM38510/33701BFA equivalent, key selection criteria include its military temperature range, dual-enable logic architecture, output drive capability (20 mA sink), TTL-compatible input thresholds, and suitability for cascaded decoding in avionics and defense computing subsystems.
Technical Context
The JM38510/33701BFA implements positive-logic decoding with two active-low (G2A, G2B) and one active-high (G1) enable control, enabling flexible cascading without external inverters. Its internal logic selects exactly one of eight complementary outputs (Y0–Y7) based on binary inputs A, B, C and simultaneous enable conditions.
It is fully compatible with standard TTL voltage levels: VIH = 2 V min, VIL = 0.8 V max, VOH = 2.5 V min at –1 mA, VOL = 0.5 V max at 20 mA. Propagation delay is specified under 5 V supply, 50 pF load, and covers both address-to-output (A/B/C → Y) and enable-to-output (G1/G2A/G2B → Y) paths with distinct tPLH/tPHL values.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | 3-input binary decoder / 1-to-8 demultiplexer with three enable inputs |
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with legacy 5 V TTL systems and stable operation under rail variation |
| Propagation Delay | 2.7 ns (min tPLH, G2A→Y) - enables use in sub-100 MHz address decode paths without timing penalty |
| Output Drive | 20 mA sink per output - supports direct interfacing to multiple TTL loads or small LED indicators |
| Operating Temp | –55°C to 125°C - qualified per MIL-PRF-38535 for deployment in airborne, spaceborne, and ground vehicle electronics |
| Input Thresholds | VIH ≥ 2.0 V, VIL ≤ 0.8 V - guarantees noise margin > 0.4 V in noisy military environments |
| Package | 16-pin CFP (W) - hermetically sealed ceramic flatpack with gold leads for high-reliability, moisture-resistant mounting |
Pinout & Package
Package: 16-lead Ceramic Flatpack (CFP), Type W, hermetically sealed, gold-plated leads, compliant with MIL-STD-1835.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | A (Select Input) | LSB address input; referenced to GND; drives internal decode logic with TTL-compatible thresholds |
| 2 | B (Select Input) | Mid-bit address input; synchronized with A and C for full 3-bit selection |
| 3 | C (Select Input) | MSB address input; completes 3-bit binary word determining active output line |
| 4 | G2A (Enable) | Active-low enable; must be LOW with G2B LOW and G1 HIGH for functional decode |
| 5 | G2B (Enable) | Second active-low enable; used with G2A to reduce external gating in multi-stage decoders |
| 6 | G1 (Enable) | Active-high enable; provides polarity flexibility when cascading with other 'F138 devices |
| 7 | Y7 (Output) | Complementary active-low decoded output; asserted when A=B=C=HIGH and enables satisfied |
| 8 | GND | Signal and power reference plane; requires low-impedance connection to system ground |
| 9 | VCC | +5 V power supply; bypassing with 0.1 µF ceramic capacitor at package is mandatory for noise immunity |
| 10 | Y0 (Output) | Complementary active-low output for 000 input state; used for chip select or interrupt routing |
| 11 | Y1 (Output) | Active-low output for 001 input; supports modular peripheral addressing in backplane systems |
| 12 | Y2 (Output) | Active-low output for 010 input; commonly tied to memory bank enable or I/O controller select |
| 13 | Y3 (Output) | Active-low output for 011 input; enables partitioned resource allocation in real-time controllers |
| 14 | Y4 (Output) | Active-low output for 100 input; used in redundant sensor interface selection logic |
| 15 | Y5 (Output) | Active-low output for 101 input; supports dual-CPU arbitration signal generation |
| 16 | Y6 (Output) | Active-low output for 110 input; employed in fault-tolerant bus switching circuits |
Key Features
| Feature | Design Value |
|---|---|
| Triple Enable Architecture | Two active-low (G2A, G2B) + one active-high (G1) enables allow 24-line decoding without external inverters |
| High-Speed Propagation | 2.7 ns minimum tPLH ensures minimal added latency in critical memory access paths |
| Military Temperature Range | –55°C to 125°C operation validated per MIL-PRF-38535, eliminating derating concerns in extreme environments |
| TTL-Compatible Interface | Direct drop-in replacement for legacy 74F138 in existing 5 V systems without level-shifting |
| Hermetic CFP Packaging | 16-pin ceramic flatpack (W) provides long-term reliability, moisture resistance, and thermal stability in harsh deployments |
Applications
| Avionics Data Bus Decoding | Ground Vehicle Control Unit |
|---|---|
Use Scenario: Selecting discrete LRUs (Line Replaceable Units) on a MIL-STD-1553B or ARINC 429 subsystem using parallel address lines. IC Role / Device Role / Timing Role: Address decoder generating chip-select signals for transceiver buffers and protocol engines. Use Value: Sub-3 ns propagation delay prevents pipeline stalls during high-rate command dispatch in flight control computers. | Use Scenario: Enabling specific sensor clusters (e.g., engine thermocouples, brake pressure transducers) in armored vehicle ECUs. IC Role / Device Role / Timing Role: Demultiplexer routing master microcontroller commands to isolated analog front-end modules. Use Value: Triple-enable logic allows dynamic reconfiguration of sensor groups without firmware changes or PCB redesign. |
| Spacecraft Onboard Computer | Tactical Radio Transceiver |
Use Scenario: Memory-mapped I/O decoding for radiation-hardened SRAM banks and FPGA configuration interfaces. IC Role / Device Role / Timing Role: High-reliability address decoder ensuring deterministic access to non-volatile configuration registers. Use Value: Hermetic CFP packaging and –55°C to 125°C rating support uninterrupted operation during orbital thermal cycling. | Use Scenario: Channel selection logic in software-defined radio (SDR) platforms requiring fast band-switching between HF/VHF/UHF bands. IC Role / Device Role / Timing Role: Demultiplexer enabling RF front-end components (filters, LNAs, PAs) based on digital control words. Use Value: Active-low outputs directly drive enable pins of GaN power amplifiers with no additional logic buffering required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-line-to-8-line decoder applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SNJ54F138W | Identical electrical specs, same CFP (W) package, but marked per JAN/US military specification rather than JANTXV | No functional difference; SNJ54F138W is procured under different DSCC drawing control and traceability requirements | Select SNJ54F138W if DSCC QML-38535 Class V qualification with full lot traceability is mandated by program office |
| 5962-9758201QFA | Same die, identical CFP (W) package, but certified to QML-38535 Class V with extended screening (e.g., burn-in, radiation testing) | Required for spaceflight missions where total ionizing dose (TID) tolerance ≥ 100 krad(Si) is specified | Choose 5962-9758201QFA when radiation hardness assurance (RHA) documentation and test reports are contractually required |
Compared with SNJ54F138W and 5962-9758201QFA, the JM38510/33701BFA delivers identical decoding performance and packaging but is designated under the JANTXV baseline with full MIL-PRF-38535 conformance - making it optimal for defense programs requiring proven field reliability without mandatory RHA overhead.
Availability
JM38510/33701BFA is available at Aetrix Electronics and suitable for avionics data bus decoding, ground vehicle control units, spacecraft onboard computers, tactical radio transceivers, and secure communications hardware requiring stable component supply across extended product lifecycles.
Supply support for JM38510/33701BFA 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 headquartered in Dallas, Texas, delivering analog, embedded processing, and logic solutions for industrial, automotive, aerospace, and communications markets.
The JM38510/33701BFA belongs to TI's military logic family derived from the 74F series, engineered specifically for high-speed, high-reliability decoding in mission-critical systems where environmental resilience and long-term obsolescence management are essential.
FAQ
What is the operating temperature range for JM38510/33701BFA?
The JM38510/33701BFA is characterized for continuous operation from –55°C to 125°C, meeting MIL-PRF-38535 Class B requirements. This range is verified through temperature cycling, steady-state bias life testing, and parametric validation across extremes - ensuring reliable function in jet engine bays, desert-mounted radios, and orbiting satellites where ambient conditions exceed commercial limits. The JM38510/33701BFA maintains full decode functionality and timing compliance throughout this span without derating.
Does JM38510/33701BFA support cascaded decoding without external inverters?
Yes, the JM38510/33701BFA supports 24-line decoding without external inverters using its dual active-low enables (G2A, G2B) and single active-high enable (G1). When configured with G2A and G2B tied to address bits and G1 driven by higher-order selection, up to three JM38510/33701BFA devices can be cascaded directly. This architecture eliminates gate count and propagation delay penalties common in legacy designs - a capability explicitly confirmed in the SDFS051B datasheet functional description for the 'F138 family, applicable to JM38510/33701BFA.
What package type and lead finish does JM38510/33701BFA use?
JM38510/33701BFA uses a 16-pin Ceramic Flatpack (CFP), package drawing W, with gold-plated leads. This hermetically sealed package meets MIL-STD-1835 and provides superior moisture resistance, thermal stability, and long-term solderability versus plastic alternatives. The gold finish ensures reliable wire bonding and eliminates tin whisker risk - critical for aerospace and defense applications where field failure modes must be minimized. Package dimensions and lead geometry are fully documented in TI's official CFP-W mechanical drawings.
Can JM38510/33701BFA be used as a demultiplexer?
Yes, the JM38510/33701BFA functions as a 1-to-8 demultiplexer when one enable input (e.g., G1) is used as the data input while A, B, C serve as select lines. The datasheet explicitly states: "An enable input can be used as a data input for demultiplexing applications." In this mode, the selected output (Y0–Y7) mirrors the logic state of the enabled input, with all others held high. This behavior is electrically identical across all 'F138 variants, including JM38510/33701BFA, and is validated by the function table and logic diagram in SDFS051B.
What are the absolute maximum ratings for JM38510/33701BFA?
The absolute maximum ratings for JM38510/33701BFA are: supply voltage (VCC) –0.5 V to 7 V; input voltage (VI) –1.2 V to 7 V; input current –30 mA to 5 mA; output voltage in high state –0.5 V to VCC; output sink current 40 mA; operating temperature –55°C to 125°C; storage temperature –65°C to 150°C. These stress limits are defined in the SDFS051B datasheet and apply identically to JM38510/33701BFA as a qualified variant of the SN54F138. Exceeding any value may cause permanent damage, and operation beyond recommended conditions is not guaranteed.
JM38510/33701BFA 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:
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- Operating Temperature:
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JM38510/33701BFA FAQ
1.How can I place an order for JM38510/33701BFA through Aetrix?
Please submit a Request for Quotation (RFQ) for JM38510/33701BFA on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for JM38510/33701BFA reliable?
The price and inventory of JM38510/33701BFA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/33701BFA is usually 5 days.
3.What payment methods are accepted for JM38510/33701BFA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JM38510/33701BFA transactions.
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4.How is shipping managed for JM38510/33701BFA?
JM38510/33701BFA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JM38510/33701BFA 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 JM38510/33701BFA?
For technical support, including JM38510/33701BFA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/33701BFA requirements.
6.How does Aetrix verify that JM38510/33701BFA is sourced from the original manufacturer or authorized distributors?
All JM38510/33701BFA 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 JM38510/33701BFA meets industry standards.
7.What is the process for return or replacement of JM38510/33701BFA?
All JM38510/33701BFA units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/33701BFA, 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 JM38510/33701BFA part is unused and in its original packaging.
Return procedure for JM38510/33701BFA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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