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Texas Instruments JM38510/65553BSA
- Part No.:
- JM38510/65553BSA
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
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JM38510/65553BSA.pdf
- Description:
- 54HCT245 OCTAL BUS TRANSCEIVERS
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Inventory:3,508
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Product details
Overview
JM38510/65553BSA from Texas Instruments is a military-grade octal bus transceiver with 3-state outputs, bidirectional data flow control via DIR pin, and active-low output enable (OE). It operates at 4.5 V to 5.5 V, delivers ±6 mA output drive at 5 V, exhibits typical propagation delay of 14 ns (CL = 50 pF), and supports −55 °C to +125 °C operation in CFP-20 package. It is used for high-reliability bus isolation and signal strengthening in avionics backplanes.
For engineers reviewing the JM38510/65553BSA datasheet, JM38510/65553BSA pinout, JM38510/65553BSA application, or JM38510/65553BSA equivalent, key selection criteria include its MIL-PRF-38535 Class B qualification, 20-pin CFP package with 13.09 mm × 6.92 mm body size, guaranteed operation across full military temperature range, and compatibility with TTL-level inputs.
Technical Context
The JM38510/65553BSA implements a standard '245 logic function with dual-bus bidirectional data transfer controlled by a single DIR input and isolated via active-low OE. Its CMOS HCT architecture ensures TTL-voltage compatibility while maintaining low static current (≤80 µA) and balanced drive strength on all eight channels.
It features center-aligned VCC and GND pins to minimize switching noise, supports up to 15 LSTTL loads per output, and provides defined timing behavior with tpd ≤25 ns (max, CL = 50 pF), ten ≤52 ns (max), and tdis ≤45 ns (max) over its full operating temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures robust operation under nominal 5-V rail variation and brownout conditions in harsh environments. |
| Operating Temperature | −55 °C to +125 °C - Qualified per MIL-PRF-38535 Class B for extended life in aerospace, defense, and downhole systems. |
| Output Drive | ±6 mA at 5 V - Sufficient to directly drive 15 LSTTL loads without external buffering in legacy bus architectures. |
| Propagation Delay | Typ. 14 ns (CL = 50 pF) - Enables reliable 35+ MHz data throughput in synchronous bus applications. |
| Input Compatibility | TTL-voltage compatible (VIH ≥ 2 V, VIL ≤ 0.8 V) - Interoperates seamlessly with legacy 5-V TTL logic families without level-shifting. |
| Static Supply Current | ≤80 µA max - Minimizes standby power in always-on subsystems such as flight control monitoring circuits. |
| ESD Rating | HBM ±1500 V, CDM ±2000 V - Meets JEDEC JEP155/JEP157 for safe handling in controlled manufacturing environments. |
Pinout & Package
Package: CFP-20 (Ceramic Flatpack), body size 13.09 mm × 6.92 mm, hermetically sealed, lead finish unspecified (TBD per TI orderable addendum), MSL not applicable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DIR) | Direction Control Input | High = A→B data flow; Low = B→A; determines real-time bus direction without clocking or state machines. |
| 2–9 (A1–A8) | Port A I/O Terminals | Bidirectional data lines connected to local bus (e.g., microcontroller or FPGA side); high-impedance when OE = high. |
| 10 (GND) | Ground Reference | Primary return path for all internal logic and I/O; center-positioned to reduce ground bounce in high-speed switching. |
| 11–18 (B8–B1) | Port B I/O Terminals | Bidirectional data lines connected to remote bus (e.g., backplane or peripheral side); mirrored pin order for layout symmetry. |
| 19 (OE) | Output Enable Input | Active-low; forces all A/B ports into high-impedance state to isolate buses during arbitration or fault conditions. |
| 20 (VCC) | Power Supply | +5 V supply input; center-positioned opposite GND to balance power distribution and suppress supply noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Bus Isolation | Enables dynamic A↔B data routing and complete bus decoupling via OE, critical for fault containment in redundant avionics networks. |
| MIL-PRF-38535 Class B Qualification | Guarantees screening, testing, and traceability per U.S. military specification - required for flight-critical hardware in DoD programs. |
| Center-Pin Power/Ground Layout | VCC (pin 20) and GND (pin 10) are diametrically opposed to minimize loop inductance and suppress simultaneous switching noise. |
| Low Input Current | ≤100 nA max - Reduces loading on upstream drivers (e.g., FPGA I/O banks) and enables long trace routing without signal degradation. |
| Controlled Rise/Fall Times | Typ. 8–12 ns (CL = 50 pF) - Limits EMI generation and prevents overshoot/ringing on unterminated ribbon cables up to 1 m. |
Applications
| Avionics Data Backplane | Missile Guidance Interface |
|---|---|
|
Use Scenario: Bidirectional data exchange between flight computer and sensor modules across a 0.8-m ribbon cable in a jet aircraft's environmental control unit. IC Role / Device Role / Timing Role: Signal repeater and bus isolator; buffers weak MCU outputs to maintain signal integrity over lossy interconnects while enabling command-response handshaking. Use Value: Prevents bus contention during hot-swap events and extends maximum cable length by >40% compared to direct FPGA-to-peripheral connection. |
Use Scenario: Real-time telemetry and control link between guidance processor and actuator driver board inside a tactical missile's sealed compartment. IC Role / Device Role / Timing Role: Radiation-tolerant bus transceiver; provides deterministic 14-ns latency and thermal-stable drive strength across −55 °C to +125 °C operational envelope. Use Value: Eliminates need for custom level shifters or discrete buffer arrays, reducing BOM count and PCB area in space-constrained guidance electronics. |
| Ground-Based Radar Control | Nuclear Power Plant Safety PLC |
|
Use Scenario: Interfacing radar signal processor (A-side) with analog front-end ADC/DAC modules (B-side) in a cooled cabinet with EMI-sensitive RF sections. IC Role / Device Role / Timing Role: Electromagnetic isolation barrier; high-impedance disable mode (OE = high) breaks ground loops and blocks conducted noise between subsystems. Use Value: Achieves >60 dB common-mode rejection at 100 MHz without ferrites or optocouplers, simplifying EMC compliance testing. |
Use Scenario: Connecting safety-critical programmable logic controller (PLC) CPU to redundant I/O modules in Class 1E nuclear instrumentation and control systems. IC Role / Device Role / Timing Role: Certified bus repeater; provides fail-safe high-Z isolation on command to prevent cascading faults during module replacement or diagnostics. Use Value: Meets IEEE 383/603 qualification requirements for seismic survivability and long-term reliability (>40-year service life). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN54HCT245J | MIL-PRF-38535 Class S (not Class B); same CFP-20 package, identical electrical specs, but lower screening rigor and no burn-in. | Suitable for non-flight-critical ground test equipment where full Class B qualification is not mandated. | Select SN54HCT245J only if program documentation explicitly permits Class S devices and lifecycle cost is prioritized over field reliability. |
| JM38510/65553BRA | Same Class B qualification and temperature range, but CDIP-20 package (24.20 mm × 6.92 mm) instead of CFP-20; larger footprint and through-hole mounting. | Preferred for legacy board designs with existing CDIP footprints or manual solder rework requirements. | Choose JM38510/65553BRA when mechanical compatibility with existing through-hole assemblies outweighs weight and density advantages of CFP. |
Compared with SN54HCT245J, JM38510/65553BSA offers higher reliability assurance for mission-critical use; compared with JM38510/65553BRA, it reduces board area by 46% and improves thermal resistance (RθJA = 84.6 °C/W vs. 43.4 °C/W in SOIC variants), making it optimal for conduction-cooled avionics modules.
Availability
JM38510/65553BSA is available at Aetrix Electronics and suitable for avionics data backplanes, missile guidance interfaces, ground-based radar control systems, and nuclear safety PLCs requiring stable component supply across extended product lifecycles.
Supply support for JM38510/65553BSA 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 specializing in analog, embedded processing, and high-reliability components, with decades of heritage in aerospace and defense electronics.
JM38510/65553BSA belongs to TI's military logic portfolio, designed specifically for high-integrity digital interfacing in environments demanding radiation tolerance, extreme temperature resilience, and long-term supply chain stability.
FAQ
What is the qualified temperature range for JM38510/65553BSA?
JM38510/65553BSA is fully qualified for operation from −55 °C to +125 °C per MIL-PRF-38535 Class B requirements. This range is verified through temperature cycling, steady-state life testing, and parametric validation at both extremes - ensuring reliable performance in jet engine bays, missile canisters, and nuclear reactor control rooms where JM38510/65553BSA is deployed.
Does JM38510/65553BSA support TTL-level input signals?
Yes, JM38510/65553BSA has TTL-voltage compatible inputs: VIH ≥ 2.0 V and VIL ≤ 0.8 V over the full 4.5 V to 5.5 V supply range. This allows direct interface with legacy 5-V TTL logic families (e.g., 74LS, 74ALS) without level-shifting circuitry - a key design advantage in retrofitted defense systems where JM38510/65553BSA replaces aging transceivers.
What is the maximum output current rating per pin for JM38510/65553BSA?
JM38510/65553BSA specifies a continuous output current limit of ±35 mA per pin and ±70 mA total for all outputs combined. These values are validated under worst-case conditions (TA = +125 °C, VCC = 5.5 V) and define absolute safe operating boundaries - exceeding them risks latch-up or accelerated wear in JM38510/65553BSA's CMOS output stage.
How does the DIR pin control data flow direction in JM38510/65553BSA?
In JM38510/65553BSA, the DIR pin is a synchronous control input: when DIR = HIGH, data flows from Port A (pins 2–9) to Port B (pins 11–18); when DIR = LOW, data flows from Port B to Port A. This bidirectional routing occurs transparently with no internal latching - making JM38510/65553BSA ideal for half-duplex protocols like MIL-STD-1553B auxiliary buses.
Is JM38510/65553BSA RoHS-compliant?
JM38510/65553BSA is not subject to RoHS compliance requirements, as it is a Class B military device manufactured under MIL-PRF-38535 with leaded solder and non-RoHS materials permitted per exemption. Its lead finish is unspecified in public TI documentation (listed as "TBD" in orderable addendum), and it is intended for applications where reliability and qualification supersede environmental directives - consistent with JM38510/65553BSA's deployment in certified safety systems.
JM38510/65553BSA 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:
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- Mounting Type:
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- Supplier Device Package:
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JM38510/65553BSA FAQ
1.How can I place an order for JM38510/65553BSA through Aetrix?
Please submit a Request for Quotation (RFQ) for JM38510/65553BSA 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 JM38510/65553BSA reliable?
The price and inventory of JM38510/65553BSA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/65553BSA is usually 5 days.
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4.How is shipping managed for JM38510/65553BSA?
JM38510/65553BSA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JM38510/65553BSA 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 JM38510/65553BSA?
For technical support, including JM38510/65553BSA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/65553BSA requirements.
6.How does Aetrix verify that JM38510/65553BSA is sourced from the original manufacturer or authorized distributors?
All JM38510/65553BSA 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 JM38510/65553BSA meets industry standards.
7.What is the process for return or replacement of JM38510/65553BSA?
All JM38510/65553BSA units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/65553BSA, 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 JM38510/65553BSA part is unused and in its original packaging.
Return procedure for JM38510/65553BSA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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