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Texas Instruments JM38510/34803BSA
- Part No.:
- JM38510/34803BSA
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
JM38510/34803BSA.pdf
- Description:
- 54F245 OCTAL BUS TRANSCEIVERS WI
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Inventory:3,344
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Product details
Overview
JM38510/34803BSA from Texas Instruments is a military-grade octal bus transceiver with 3-state outputs, designed for asynchronous bidirectional data transfer between A and B buses in high-reliability systems. It features direction control (DIR), output enable (OE), ±55°C to +125°C operating range, 20-pin CFP package, and supports up to 64 mA low-level output current on B-side terminals.
For engineers reviewing the JM38510/34803BSA datasheet, JM38510/34803BSA pinout, JM38510/34803BSA application, or JM38510/34803BSA equivalent, key selection criteria include military temperature qualification, CFP packaging for hermetic reliability, 3-state isolation timing (tPZL = 9 ns max), and compatibility with legacy F-series TTL logic voltage thresholds.
Technical Context
The JM38510/34803BSA implements dual 8-bit bidirectional data paths controlled by DIR and OE inputs, enabling A→B or B→A transmission under active-low OE. Its internal architecture uses standard F-series TTL circuitry with Schottky-clamped transistors for speed and noise immunity.
It operates strictly within 4.5 V–5.5 V supply range, meets MIL-STD-883 Class B requirements, and delivers guaranteed switching performance across –55°C to +125°C without derating - including tPLH/tPHL ≤ 7 ns and tPZL/tPHZ ≤ 9 ns at CL = 50 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with 5 V TTL systems and margin against rail droop in ruggedized power domains. |
| Operating Temperature | –55°C to +125°C - qualified per MIL-PRF-38535 for deployment in avionics, missile guidance, and space-qualified electronics. |
| Output Drive (B-side) | 64 mA sink current - enables direct driving of heavy capacitive loads or multiple TTL inputs without external buffers. |
| Propagation Delay | ≤ 7 ns (A↔B) - supports high-speed bus arbitration in real-time control subsystems with sub-10 ns timing budgets. |
| 3-State Enable Time | tPZL ≤ 9 ns - guarantees rapid bus release during dynamic mode switching, minimizing contention windows in multiplexed architectures. |
| Input Thresholds | VIL = 0.8 V, VIH = 2.0 V - matches standard TTL logic families, eliminating level-shifting requirements in mixed-F-series designs. |
| Package Type | 20-pin CFP (W drawing) - hermetically sealed ceramic flatpack with glass-sealed leads for moisture resistance and long-term reliability in harsh environments. |
Pinout & Package
Package: 20-pin Ceramic Flatpack (CFP), JEDEC MO-041 compliant, body size 13.0 mm × 7.6 mm × 2.65 mm max height, glass-sealed leads, non-RoHS (lead-based finish).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | DIR | Direction control input: LOW enables B→A transfer; HIGH enables A→B transfer - critical for half-duplex bus arbitration logic. |
| 2–9 | A1–A8 | Terminal A-side I/O pins - connect to source bus; electrically identical to B-side but rated for lower drive strength (24 mA sink). |
| 10 | GND | Signal ground reference - must be low-inductance connection to minimize ground bounce during simultaneous 3-state transitions. |
| 11–18 | B1–B8 | Terminal B-side I/O pins - connect to destination bus; support higher sink current (64 mA) for fanout-critical interfaces. |
| 19 | OE | Active-low output enable - HIGH disables all outputs into high-impedance state, isolating both buses completely. |
| 20 | VCC | Positive supply pin - requires local 0.1 µF ceramic decoupling adjacent to pin to suppress switching noise. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Data Flow | Single DIR pin configures full 8-bit path reversal without external logic - reduces PCB routing complexity in dual-bus interconnects. |
| 3-State Bus Isolation | OE-controlled high-impedance mode eliminates bus contention during system reset or multi-master arbitration - prevents signal corruption. |
| Military Temperature Range | Qualified from –55°C to +125°C per MIL-PRF-38535 - validated for operation in jet engine bays, radar front-ends, and orbital platforms. |
| CFP Hermetic Packaging | Ceramic flatpack with glass-sealed leads - provides <10⁻⁶ atm·cc/sec He leak rate, ensuring long-term reliability in vacuum or corrosive atmospheres. |
| F-Series TTL Compatibility | Matches SN54F245 electrical specs exactly - allows drop-in replacement in legacy defense systems certified to original F-family baselines. |
Applications
| Avionics Data Bus Interface | Tactical Radio Baseband Link |
|---|---|
|
Use Scenario: Interfacing mission computer ARINC 429 receivers with discrete I/O FPGA modules in fighter aircraft flight control systems. IC Role / Device Role / Timing Role: Bidirectional level-translating transceiver managing time-critical sensor data handoff between dissimilar bus domains under EMI-heavy conditions. Use Value: Guaranteed 7 ns propagation delay and –55°C startup ensure deterministic latency during cold-soak launch sequences and sustained operation at altitude. |
Use Scenario: Enabling shared memory access between DSP and microcontroller in software-defined radio transceivers deployed in ground vehicles. IC Role / Device Role / Timing Role: Bus isolation gate controlling concurrent read/write cycles across dual-ported RAM banks during frequency-hopping transitions. Use Value: 9 ns tPZL ensures clean bus release before next hop window, preventing bit errors caused by residual bus coupling during RF burst timing. |
| Missile Guidance Signal Conditioning | Satellite Onboard Computer Expansion |
|
Use Scenario: Routing telemetry and command signals between radiation-hardened processor and analog sensor interface ASICs inside guided munition canisters. IC Role / Device Role / Timing Role: Radiation-tolerant bus repeater maintaining signal integrity across 20 cm backplane traces subject to thermal cycling and shock. Use Value: CFP package withstands 1500 g shock and 2000 hr 125°C life test - meets MIL-STD-202G Method 213 for weapon system survivability. |
Use Scenario: Extending spacecraft OBC parallel address/data bus to add-on payload controller modules in LEO satellite platforms. IC Role / Device Role / Timing Role: Hot-swap-capable bus buffer allowing in-orbit reconfiguration without powering down primary computing subsystem. Use Value: Absolute maximum rating of –0.5 V to 5.5 V on I/O pins prevents latch-up during undervoltage brownout events common in solar-array transient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JM38510/34803BRA | 20-pin CDIP package (J drawing), same electrical specs and temperature range - leaded through-hole, larger footprint, less hermetic than CFP. | Preferred for prototyping or repair where socketing and manual rework are required; unsuitable for high-vibration or vacuum environments. | Select when board-level repairability or legacy DIP layout reuse is prioritized over hermeticity and size. |
| JM38510/34803B2A | 20-pin LCCC package (FK drawing), identical specs and temp range - surface-mount ceramic, no leads, superior thermal dissipation vs CFP. | Used in high-density digital modules requiring minimal Z-height and enhanced thermal management, such as phased-array radar beamformers. | Select when thermal performance and ultra-low profile are critical, and reflow soldering capability exists. |
Compared with JM38510/34803BSA, the CDIP alternative offers easier manual handling but inferior environmental sealing, while the LCCC variant improves thermal response and mounting density at the cost of rework complexity - all three share identical logic behavior and military qualification scope.
Availability
JM38510/34803BSA is available at Aetrix Electronics and suitable for avionics integration, missile guidance subsystems, and satellite onboard computer expansion requiring stable component supply across extended product lifecycles.
Supply support for JM38510/34803BSA 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 founded in 1930, specializing in analog, embedded processing, and high-reliability logic solutions for defense, aerospace, and industrial markets.
JM38510/34803BSA belongs to TI's military 54F logic family, engineered to meet MIL-PRF-38535 requirements for QML Class B devices used in safety-critical real-time data routing applications.
FAQ
What is the qualified temperature range for JM38510/34803BSA?
JM38510/34803BSA is fully characterized and qualified for continuous operation from –55°C to +125°C per MIL-PRF-38535, with all electrical parameters guaranteed across this range - including propagation delay, output drive, and input thresholds - making it suitable for extreme-environment deployment without derating.
Is JM38510/34803BSA pin-compatible with commercial SN74F245 variants?
No - JM38510/34803BSA uses a 20-pin CFP (W) package, whereas SN74F245 is offered in SOIC (DW), SSOP (DB), or PDIP (N) packages. While logic function, pin numbering, and signal roles match identically, physical dimensions, lead form, and mounting method differ; PCB layout must be redesigned for CFP footprint.
Does JM38510/34803BSA support hot insertion or live bus swapping?
JM38510/34803BSA is not explicitly rated for hot insertion. Its absolute maximum ratings allow –0.5 V to 5.5 V on disabled outputs, but no built-in bus-fault protection or power sequencing logic exists. Safe live swapping requires external current-limiting and controlled enable sequencing - verified per system-level MIL-STD-1540 testing.
What is the maximum capacitive load JM38510/34803BSA can drive reliably?
JM38510/34803BSA is specified with CL = 50 pF in switching characteristics tables, and its 64 mA B-side sink current supports driving ≥ 10 standard TTL inputs or ~75 pF total trace+load capacitance while maintaining tPLH/tPHL ≤ 7 ns - beyond that, timing margins degrade and signal integrity must be verified per layout.
How does the CFP package of JM38510/34803BSA compare to CDIP and LCCC alternatives?
JM38510/34803BSA's CFP package offers hermetic sealing and moderate thermal resistance (θJA ≈ 55°C/W), sitting between CDIP (higher θJA, non-hermetic) and LCCC (lower θJA, zero-lead, highest cost). All three share identical die and electrical behavior - choice depends on mechanical, thermal, and reliability priorities per system design.
JM38510/34803BSA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
JM38510/34803BSA FAQ
1.How can I place an order for JM38510/34803BSA through Aetrix?
Please submit a Request for Quotation (RFQ) for JM38510/34803BSA 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 JM38510/34803BSA reliable?
The price and inventory of JM38510/34803BSA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/34803BSA is usually 5 days.
3.What payment methods are accepted for JM38510/34803BSA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JM38510/34803BSA transactions.
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4.How is shipping managed for JM38510/34803BSA?
JM38510/34803BSA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JM38510/34803BSA 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 JM38510/34803BSA?
For technical support, including JM38510/34803BSA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/34803BSA requirements.
6.How does Aetrix verify that JM38510/34803BSA is sourced from the original manufacturer or authorized distributors?
All JM38510/34803BSA 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 JM38510/34803BSA meets industry standards.
7.What is the process for return or replacement of JM38510/34803BSA?
All JM38510/34803BSA units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/34803BSA, 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 JM38510/34803BSA part is unused and in its original packaging.
Return procedure for JM38510/34803BSA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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