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Texas Instruments JM38510/32402B2A
- Part No.:
- JM38510/32402B2A
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
JM38510/32402B2A.pdf
- Description:
- 54LS241 OCTAL BUFFERS AND LINE D
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Inventory:2,216
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Product details
Overview
JM38510/32402B2A from Texas Instruments is a military-grade octal buffer and line driver with 3-state outputs, designed for memory address bus driving and high-noise-margin bus interfacing in harsh environments. It features dual 4-bit channels, active-low output-enable (1G/2G), 15 ns maximum propagation delay at 5 V, ±24 mA output drive capability, and operates across –55°C to +125°C.
For engineers reviewing the JM38510/32402B2A datasheet, JM38510/32402B2A pinout, JM38510/32402B2A application, or JM38510/32402B2A equivalent, key selection criteria include its MIL-PRF-38535 qualification, CDIP-20 hermetic package, PNP input structure reducing DC loading, 400-mV noise margin, and compatibility with 3.3-V/5-V mixed logic systems.
Technical Context
The JM38510/32402B2A implements two independent 4-bit non-inverting buffer channels (1A→1Y and 2A→2Y), each controlled by dedicated active-low enable inputs (1G and 2G). Its PNP input stage minimizes bus loading, while built-in input hysteresis ensures robust noise immunity in electrically noisy military platforms.
It operates strictly at 5 V (4.5–5.5 V) with guaranteed performance over full military temperature range. All parameters are 100% tested per MIL-PRF-38535 requirements, including switching characteristics (tPLH/tPHL ≤15 ns), output drive (IOL = 24 mA min), and input hysteresis (0.2–0.4 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures stable operation in regulated 5-V military power rails with tolerance for supply ripple. |
| Propagation Delay | ≤15 ns - Enables reliable timing in high-speed memory address buffering up to ~67 MHz clock-equivalent systems. |
| Output Drive | ±24 mA - Sufficient to drive terminated lines down to 133 Ω and support fan-out to ≥20 LS-TTL loads. |
| Input Hysteresis | 0.2–0.4 V - Provides 400-mV noise margin, critical for signal integrity in avionics and ground vehicle EMI environments. |
| Operating Temp | –55°C to +125°C - Fully qualified for extended-range deployment in airborne, space, and tactical systems. |
| ESD Rating | 500 V HBM - Meets standard handling requirements for military assembly and field maintenance. |
Pinout & Package
Package: Ceramic Dual-In-Line Package (CDIP-20), 24.20 mm × 6.92 mm, hermetically sealed, MIL-STD-883 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1G / 2G | Active-low output-enable controls for Channel 1 and Channel 2 - Must be pulled high via external resistor during power-up to ensure high-impedance default state. |
| 2, 4, 6, 8, 11, 13, 15, 17 | 1A1–1A4 / 2A1–2A4 | Non-inverting data inputs - PNP structure reduces DC loading on source buses; tolerant of 2-V minimum input voltage. |
| 3, 5, 7, 9, 12, 14, 16, 18 | 2Y4–2Y1 / 1Y4–1Y1 | 3-state non-inverting outputs - Drive bus lines directly; high-impedance when corresponding G is high; capable of sinking 24 mA. |
| 10 | GND | Signal and power ground reference - Requires low-inductance connection to minimize ground bounce in high-speed switching. |
| 20 | VCC | +5 V supply - Must be decoupled locally with 0.1 µF ceramic capacitor to suppress switching transients. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-38535 Qualified | Fully tested per Class B requirements - Guarantees reliability, traceability, and screening for defense-critical applications. |
| PNP Input Structure | Reduces input DC loading to <0.2 mA - Minimizes bus current draw and heat generation in dense backplane designs. |
| 3-State Output Control | Independent 1G/2G enables bidirectional bus arbitration - Allows time-multiplexed use of shared address/data paths without external logic. |
| Hysteresis-Enhanced Inputs | 0.2–0.4 V threshold separation - Prevents false triggering from EMI-induced glitches on long PCB traces or cables. |
| 5-V Logic Compatibility | Accepts 2-V minimum VIH - Interoperates with legacy TTL, LVTTL, and mixed-voltage microcontrollers without level shifters. |
Applications
| Aerospace Avionics Data Bus | Tactical Vehicle Memory Address Buffering |
|---|---|
Use Scenario: Driving multiplexed address lines between flight computer and radiation-hardened PROM/ROM modules in UAV guidance systems. IC Role / Device Role / Timing Role: Non-inverting octal buffer isolating CPU address bus from memory array; provides noise-immune signal restoration over 15-cm PCB runs. Use Value: 400-mV noise margin and –55°C to +125°C operation ensure deterministic timing under vibration, thermal cycling, and EMI exposure. | Use Scenario: Buffering control signals from armored vehicle's mission computer to distributed I/O modules across CAN and discrete wiring harnesses. IC Role / Device Role / Timing Role: Dual-channel 4-bit driver enabling independent enable control for separate sensor and actuator address groups. Use Value: Independent 1G/2G pins allow selective activation of subsystems without software overhead or additional glue logic. |
| Ground-Based Radar Signal Conditioning | Military Communications Backplane Interface |
Use Scenario: Re-timing and strengthening serial configuration commands sent to T/R module FPGAs in phased-array radar front ends. IC Role / Device Role / Timing Role: Level-restoring repeater for slow-rising control signals degraded by long coaxial cable runs and connector parasitics. Use Value: 15 ns tpd and 24 mA drive restore edge integrity, enabling reliable setup/hold timing at 20+ MHz command rates. | Use Scenario: Interfacing legacy 5-V bus controllers to modern 3.3-V FPGA-based payload processors in secure comms radios. IC Role / Device Role / Timing Role: Voltage-tolerant translator - accepts 3.3-V inputs while driving 5-V backplane loads with no external components. Use Value: Eliminates need for discrete level-shifting circuitry, reducing BOM count and improving MTBF in SWaP-constrained radios. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN54LS244J | Same logic function, CDIP-20 package, but commercial-grade screening (not MIL-PRF-38535 qualified); lower temperature range (–55°C to +125°C not guaranteed). | Not approved for flight-critical or nuclear-hardened deployments; suitable for ground-test equipment or non-safety-critical subsystems. | Select only if MIL-spec qualification is unnecessary and cost sensitivity outweighs long-term reliability requirements. |
| SNJ54LS240FK | LCCC-20 ceramic package instead of CDIP-20; identical electrical specs and military temp range, but different mounting and thermal profile (RθJA = 45.5°C/W vs. 50.6°C/W). | Better suited for high-vibration environments due to leadless construction; requires reflow-compatible PCB layout and inspection. | Choose when board-level shock resistance or higher packaging density is prioritized over through-hole assembly compatibility. |
Compared with SN54LS244J and SNJ54LS240FK, JM38510/32402B2A delivers verified MIL-PRF-38535 Class B conformance, full parametric test coverage, and documented lot traceability - essential for DoD procurement and DO-254/DO-178C certification evidence packages.
Availability
JM38510/32402B2A is available at Aetrix Electronics and suitable for aerospace avionics, ground vehicle control systems, and radar signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for JM38510/32402B2A 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 company specializing in analog, embedded processing, and high-reliability components for industrial, automotive, and defense markets.
JM38510/32402B2A belongs to TI's military logic family, engineered specifically to meet MIL-PRF-38535 requirements for high-reliability bus interface functions in safety-critical platforms.
FAQ
What is the operating temperature range certified for JM38510/32402B2A?
JM38510/32402B2A is fully specified and tested over –55°C to +125°C per MIL-PRF-38535 Class B requirements. This range is guaranteed for all electrical parameters including propagation delay, output drive, and input hysteresis - unlike commercial variants where only limited parameters are characterized at extremes.
Does JM38510/32402B2A support 3.3-V input logic levels?
Yes, JM38510/32402B2A accepts input voltages as low as 2 V, making it compatible with 3.3-V CMOS and LVTTL sources. Its PNP input structure ensures proper logic recognition without external level shifting, enabling direct interfacing in mixed-voltage military subsystems.
How is the high-impedance state ensured during power-up for JM38510/32402B2A?
To guarantee high-impedance outputs at power-up, both 1G and 2G pins must be tied to VCC via pullup resistors. The minimum resistor value is determined by the driver's current-sinking capability - typically 4.7 kΩ suffices to hold G high until system firmware asserts control.
What package type does JM38510/32402B2A use, and is it hermetically sealed?
JM38510/32402B2A uses a Ceramic Dual-In-Line Package (CDIP-20), 24.20 mm × 6.92 mm, and is hermetically sealed per MIL-STD-883. This construction prevents moisture ingress and ensures long-term reliability in high-humidity or salt-fog environments typical of naval and airborne platforms.
Can JM38510/32402B2A drive terminated transmission lines, and down to what impedance?
Yes, JM38510/32402B2A is characterized to drive terminated lines down to 133 Ω, supporting robust signal integrity on controlled-impedance PCB traces and backplanes. This capability is validated across the full military temperature range and supports reliable operation in radar and comms systems with strict eye-diagram requirements.
JM38510/32402B2A 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:
- -
JM38510/32402B2A FAQ
1.How can I place an order for JM38510/32402B2A through Aetrix?
Please submit a Request for Quotation (RFQ) for JM38510/32402B2A 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 JM38510/32402B2A reliable?
The price and inventory of JM38510/32402B2A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/32402B2A is usually 5 days.
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JM38510/32402B2A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JM38510/32402B2A 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 JM38510/32402B2A?
For technical support, including JM38510/32402B2A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/32402B2A requirements.
6.How does Aetrix verify that JM38510/32402B2A is sourced from the original manufacturer or authorized distributors?
All JM38510/32402B2A 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 JM38510/32402B2A meets industry standards.
7.What is the process for return or replacement of JM38510/32402B2A?
All JM38510/32402B2A units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/32402B2A, 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 JM38510/32402B2A part is unused and in its original packaging.
Return procedure for JM38510/32402B2A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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