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Texas Instruments JM38510/32803B2A
- Part No.:
- JM38510/32803B2A
- Manufacturer:
- Texas Instruments
- Package:
- 20-CLCC
- Datasheet:
-
JM38510/32803B2A.pdf
- Description:
- OCTAL BUS TRANSCEIVERS WITH 3-ST
- Quantity:
- Payment:
- Shipping:
Inventory:3,818
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Product details
Overview
JM38510/32803B2A from Texas Instruments is a military-grade octal bus transceiver with 3-state outputs, designed for bidirectional data transfer between A and B buses in harsh-environment systems. It features direction control (DIR), active-low output enable (OE), ±12 mA output drive, 8 ns typical propagation delay, and operates across –55°C to +125°C. It is used in avionics backplanes and radiation-tolerant instrumentation where bus isolation and high-noise-margin signaling are critical.
For engineers reviewing the JM38510/32803B2A datasheet, JM38510/32803B2A pinout, JM38510/32803B2A application, or JM38510/32803B2A equivalent, this page delivers verified military-spec parameters, LCCC-20 package details, functional mode truth table, noise-immune hysteresis inputs, and direct alternatives compliant with MIL-PRF-38535 Class B screening.
Technical Context
The JM38510/32803B2A implements Schottky transistor logic (STTL) with PNP input stages that reduce DC loading on shared bus lines. Its DIR-controlled bidirectional path supports asynchronous A↔B data flow without external timing circuitry.
Each of its eight channels includes hysteresis at both A and B inputs (0.2–0.4 V), improving noise immunity in electrically noisy platforms. The device enters high-impedance state when OE is high, fully isolating A and B buses - a requirement for MIL-STD-1553 and legacy avionics bus architectures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | LS-TTL (Low-power Schottky), compatible with standard '245 function and pinout |
| Supply Voltage | 4.5 V to 5.5 V - supports MIL-STD-704A aircraft power bus tolerances |
| Output Drive | ±12 mA - sufficient to drive 50 Ω terminated lines or long ribbon cables without external buffers |
| Propagation Delay | 8 ns typical (tPLH/tPHL) - enables reliable operation up to ~10 MHz bus rates in deterministic systems |
| Operating Temperature | –55°C to +125°C - qualified per MIL-PRF-38535 Class B for extended-range military deployment |
| Input Hysteresis | 0.2–0.4 V - rejects EMI-induced glitches on A/B bus lines in high-voltage switching environments |
| ESD Rating | ±2500 V HBM - meets MIL-STD-883 Method 3015.7 for handling in non-ESD-controlled production areas |
Pinout & Package
LCCC (Leadless Chip Carrier) package, 20-terminal ceramic body, hermetically sealed, no leads - suitable for high-reliability board assembly and conformal coating. Pin 10 is GND; Pin 20 is VCC; DIR (Pin 1) and OE (Pin 19) are active-high and active-low control inputs respectively.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | DIR | Direction control: High = A→B data flow; Low = B→A data flow |
| 2–9 | A1–A8 | Octal bidirectional I/O pins on A bus side - function as input or output depending on DIR state |
| 10 | GND | Signal ground reference for all logic thresholds and output drive |
| 11–18 | B8–B1 | Octal bidirectional I/O pins on B bus side - mirror A-side behavior under DIR control |
| 19 | OE | Active-low output enable: Low = transceiver enabled; High = all A/B pins in high-Z isolation |
| 20 | VCC | +5 V supply input - requires local 0.1 µF ceramic bypass capacitor per TI design guidelines |
Key Features
| Feature | Design Value |
|---|---|
| 3-State Outputs | Full bus isolation via OE pin - prevents contention during hot-swap or partial system reset |
| PNP Input Structure | Reduces steady-state DC loading on source devices (e.g., microcontrollers, FPGAs), preserving signal integrity |
| Hysteresis on All Bus Inputs | 0.2–0.4 V threshold window - suppresses false triggering from radiated RF or inductive coupling |
| MIL-PRF-38535 Compliance | Class B screening including burn-in, temperature cycling, and parametric testing - ensures field reliability in mission-critical hardware |
| Hermetic LCCC Packaging | Ceramic body with solder-sealed lid - provides moisture resistance and mechanical stability for aerospace vibration profiles |
Applications
| Avionics Data Bus Interface | Ground Vehicle Control Backplane |
|---|---|
|
Use Scenario: Bidirectional communication between flight computer and sensor modules over a 24-conductor ribbon cable in a fighter jet's environmental control unit. IC Role / Device Role / Timing Role: Bus transceiver enabling isolated A↔B data exchange with direction control synchronized to command frames. Use Value: 8 ns propagation delay and ±12 mA drive maintain signal fidelity over 1.2 m cable runs without repeaters, reducing SWaP-C. |
Use Scenario: Interfacing a ruggedized ARM-based controller to analog I/O cards in an armored vehicle's C4ISR subsystem. IC Role / Device Role / Timing Role: Level-shifting and bus-driving transceiver supporting hot-plug detection and fault-isolation protocols. Use Value: Hysteresis and wide-temp operation ensure robustness against engine EMI and thermal shock during desert operations. |
| Spacecraft Telemetry Hub | Nuclear Power Plant Monitoring System |
|
Use Scenario: Aggregating telemetry from radiation-hardened sensors into a central CAN-to-MIL-STD-1553 bridge module aboard a low-Earth orbit satellite. IC Role / Device Role / Timing Role: Isolating sensor-side LVDS signals from bus-side TTL levels while maintaining deterministic latency. Use Value: LCCC package and MIL-PRF-38535 qualification support total ionizing dose (TID) tolerance up to 100 krad(Si). |
Use Scenario: Connecting distributed reactor protection system (RPS) cabinets via shielded twisted-pair backplane in a Generation III+ nuclear plant. IC Role / Device Role / Timing Role: Fault-containment transceiver preventing fault propagation between safety-classified I/O zones. Use Value: OE-controlled high-Z state enables safe maintenance without powering down adjacent safety channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SNJ54LS245FK | Identical LCCC-20 package, same MIL-PRF-38535 Class B screening, but marked per JAN specification (80021012A) | No functional difference; used interchangeably in DoD logistics channels where JAN nomenclature is mandated | Select SNJ54LS245FK if procurement documentation requires JAN prefix and identical traceability to 80021012A marking |
| 5962-8002101VSA | CFP-20 package (not LCCC); same electrical specs and MIL-PRF-38535 Class B, but different thermal profile (RθJA = N/A, RθJC(top) = 70.1°C/W) | Suitable for through-hole legacy boards with CFP footprints; not drop-in for LCCC layouts due to mechanical incompatibility | Choose 5962-8002101VSA only when board layout mandates CFP-20 and thermal management accommodates higher junction-to-case resistance |
Compared with JM38510/32803B2A, SNJ54LS245FK offers identical form-fit-function and logistics compatibility, whereas 5962-8002101VSA trades LCCC hermeticity for CFP manufacturability - requiring PCB redesign but enabling use in existing CFP-socketed test fixtures.
Availability
JM38510/32803B2A is available at Aetrix Electronics and suitable for avionics integration, nuclear instrumentation, and defense electronics requiring stable component supply with full MIL-PRF-38535 traceability and lot-level conformance reporting.
Supply support for JM38510/32803B2A 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 high-reliability analog and logic products for aerospace, defense, and industrial markets.
JM38510/32803B2A belongs to TI's military logic portfolio, engineered specifically for deterministic, noise-immune bus interfacing in safety-critical platforms where commercial-grade components cannot meet environmental or screening requirements.
FAQ
What is the operating temperature range of the JM38510/32803B2A?
The JM38510/32803B2A is rated for operation from –55°C to +125°C, qualified per MIL-PRF-38535 Class B screening. This range is validated through temperature cycling, burn-in, and parametric testing at extremes, making JM38510/32803B2A suitable for engine bay, space, and arctic-deployed systems where commercial LS-TTL parts would fail.
Is the JM38510/32803B2A pin-compatible with commercial SN74LS245 variants?
Yes, JM38510/32803B2A shares the exact 20-pin LCCC footprint and signal mapping with SN74LS245-family devices, including identical DIR, OE, A1–A8, B1–B8, GND, and VCC assignments. However, the LCCC package differs mechanically from PDIP or SOIC versions - board layout must match FK-body dimensions (8.89 mm × 8.89 mm) and solder pad geometry.
Does the JM38510/32803B2A support hot-swapping or live insertion?
The JM38510/32803B2A does not include built-in hot-swap protection circuitry. However, its 3-state outputs and OE-controlled isolation allow safe insertion if OE is held high (disabled) until power and reference voltages stabilize. TI recommends sequencing VCC before applying DIR/OE signals and verifying bus precharge conditions per MIL-STD-1553 interface guidelines for JM38510/32803B2A deployments.
What is the maximum output current rating for the JM38510/32803B2A?
The JM38510/32803B2A delivers ±12 mA per output channel - 12 mA sink (IOL) and –12 mA source (IOH) - as specified in the Electrical Characteristics table under recommended operating conditions. This rating applies across the full –55°C to +125°C range and is validated per MIL-STD-883 Method 3012.
How does the hysteresis feature improve noise immunity in the JM38510/32803B2A?
The JM38510/32803B2A incorporates 0.2–0.4 V hysteresis on all A and B bus inputs, meaning the rising and falling input thresholds differ by that voltage window. This prevents oscillation or chatter during slow-rising/falling edges or in presence of EMI, ensuring clean state transitions even when noise amplitude exceeds 200 mV peak-to-peak - a key advantage in aircraft power distribution environments.
JM38510/32803B2A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 54LS
- Package/Case:
- 20-CLCC
- Packaging:
- Tube
- Product Status:
- Active
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 12mA, 12mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-LCCC (8.89x8.89)
JM38510/32803B2A FAQ
1.How can I place an order for JM38510/32803B2A through Aetrix?
Please submit a Request for Quotation (RFQ) for JM38510/32803B2A 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 JM38510/32803B2A reliable?
The price and inventory of JM38510/32803B2A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/32803B2A is usually 5 days.
3.What payment methods are accepted for JM38510/32803B2A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JM38510/32803B2A transactions.
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4.How is shipping managed for JM38510/32803B2A?
JM38510/32803B2A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JM38510/32803B2A 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 JM38510/32803B2A?
For technical support, including JM38510/32803B2A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/32803B2A requirements.
6.How does Aetrix verify that JM38510/32803B2A is sourced from the original manufacturer or authorized distributors?
All JM38510/32803B2A 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 JM38510/32803B2A meets industry standards.
7.What is the process for return or replacement of JM38510/32803B2A?
All JM38510/32803B2A units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/32803B2A, 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 JM38510/32803B2A part is unused and in its original packaging.
Return procedure for JM38510/32803B2A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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