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Texas Instruments JM38510/32404BRA
- Part No.:
- JM38510/32404BRA
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
JM38510/32404BRA.pdf
- Description:
- 54LS540 OCTAL BUFFERS AND LINE D
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Inventory:117
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Product details
Overview
JM38510/32404BRA from Texas Instruments is a military-grade octal buffer/line driver with 3-state outputs, designed for high-reliability data bus interface in avionics and defense systems. It features TTL-compatible inputs, ±24 mA output drive capability, -55°C to +125°C operating temperature range, and CDIP-20 package. Used in bidirectional bus transceivers and address/data latching circuits requiring radiation-tolerant logic.
For engineers reviewing the JM38510/32404BRA datasheet, JM38510/32404BRA pinout, JM38510/32404BRA application, or JM38510/32404BRA equivalent, key selection criteria include guaranteed operation across military temperature extremes, 3-state output control timing, input clamp diode protection, DC electrical specifications per MIL-STD-883, and compatibility with legacy LS-TTL bus architectures.
Technical Context
This device implements dual 4-bit non-inverting buffers with independent output-enable (OE) controls - OE1 active on pins 1 and 19, OE2 on pins 2 and 18 - enabling selective gating of two 4-bit data paths. Each output supports bus-oriented 3-state operation with defined high-impedance leakage limits (±5 µA max).
Input thresholds meet standard LS-TTL levels (VIL ≤ 0.8 V, VIH ≥ 2.0 V), and DC output characteristics are specified at VCC = 5.0 V ± 5%, with guaranteed IOL = 24 mA at VOL ≤ 0.5 V and IOH = –15 mA at VOH ≥ 2.7 V under full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | LS-TTL - ensures interoperability with legacy military 54LS-series bus systems |
| Function | Octal non-inverting buffer with dual 3-state enable - supports independent control of two 4-bit channels |
| Supply Voltage | 5.0 V ± 5% - requires tightly regulated rail; no wide-VCC support |
| Operating Temperature | –55°C to +125°C - qualified per MIL-PRF-38535 Class B for extended environmental resilience |
| Output Drive | 24 mA sink / 15 mA source - sufficient to drive 2 LS-TTL loads or 10 LSTTL inputs at worst-case VOL/VOH |
| Propagation Delay | 25 ns max (tPLH/tPHL at VCC = 5 V, TA = 25°C) - deterministic timing for synchronous bus handshaking |
| Input Clamp Diodes | Present - enables robust ESD protection and allows input overvoltage tolerance up to –1.2 V |
Pinout & Package
Package: Ceramic Dual-In-Line Package (CDIP), 20-pin, hermetically sealed, J drawing per TI specification. Suitable for high-reliability board assembly with gold-plated leads and glass-sealed body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE1 (Output Enable 1) | Active-low enable for Y1–Y4 outputs; must be low to assert outputs; high places Y1–Y4 in high-Z |
| 2, 18 | OE2 (Output Enable 2) | Active-low enable for Y5–Y8 outputs; independent control from OE1 for split-bus applications |
| 3–6, 13–16 | A1–A4, A5–A8 (Inputs) | TTL-compatible data inputs; internally clamped to VCC and GND |
| 7–10, 11–14 | Y1–Y4, Y5–Y8 (Outputs) | 3-state non-inverting buffered outputs; each capable of ±24 mA drive into terminated bus |
| 17 | GND | Signal ground reference for all logic and I/O; requires low-inductance connection in high-speed layouts |
| 20 | VCC | +5 V power supply; bypassing with 0.1 µF ceramic capacitor at package corner is mandatory |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-38535 Class B Qualification | Qualified for high-reliability defense programs with lot traceability, burn-in, and radiation hardness assurance |
| Dual Independent 3-State Enables | Enables partitioned bus control - e.g., separate address vs. data channel gating without external logic |
| Guaranteed Operation at –55°C/+125°C | Eliminates derating calculations for extreme-environment platforms such as missile guidance or satellite subsystems |
| Input Clamp Diodes | Permits safe interfacing with unpowered or hot-swappable backplanes without latch-up risk |
| Hermetic CDIP Package | Prevents moisture ingress and corrosion in humid, salt-laden, or vacuum environments |
Applications
| Avionics Data Bus Interface | Tactical Radio Baseband Processing |
|---|---|
Use Scenario: Bidirectional ARINC 429 or MIL-STD-1553B data bus buffering between processor and transceiver ASICs. IC Role / Device Role / Timing Role: Level-shifting and fanout buffer with precise 3-state timing to prevent bus contention during mode switching. Use Value: Guaranteed tdis/ten < 35 ns ensures clean bus turn-around within 1553B minor cycle constraints. |
Use Scenario: Isolating baseband DSP I/O from RF front-end FPGAs in software-defined radios deployed in field-deployable units. IC Role / Device Role / Timing Role: Octal bus driver providing controlled slew-rate outputs compatible with mixed-signal PCB routing. Use Value: ±24 mA drive sustains signal integrity across 12-inch backplane traces at 1 Mbps without termination resistors. |
| Secure Embedded Controller Backplane | Nuclear Command & Control System I/O |
Use Scenario: Interfacing radiation-hardened microcontrollers to discrete I/O modules in hardened command consoles. IC Role / Device Role / Timing Role: Non-inverting buffer with dual OE for secure read/write isolation between trusted and untrusted subsystems. Use Value: Independent OE1/OE2 allows hardware-enforced separation of control and status buses under fault conditions. |
Use Scenario: Signal conditioning and bus driving in fail-safe launch control interfaces where component failure modes must be bounded. IC Role / Device Role / Timing Role: High-reliability octal driver ensuring deterministic output states during power-up, brownout, and reset sequences. Use Value: Input hysteresis and guaranteed VOH/VOL margins prevent metastability in safety-critical voting logic chains. |
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 |
|---|---|---|---|
| SNJ54LS540J | Identical function, pinout, and military qualification; same CDIP-20 package and -55°C to +125°C rating | No functional difference; differs only in TI's internal part numbering and lot traceability documentation | Select SNJ54LS540J when sourcing from TI's direct military logistics channel with QML-38535 certification reporting |
| JM38510/32405BRA | Inverting output polarity (octal inverting buffer); otherwise identical timing, drive, and environmental specs | Requires logic inversion in upstream/downstream circuitry; unsuitable where signal polarity must be preserved | Choose JM38510/32405BRA only when system architecture mandates inverted bus signaling or complements existing non-inverting stages |
Compared with JM38510/32404BRA, SNJ54LS540J offers identical performance and qualification but different procurement documentation lineage, while JM38510/32405BRA provides matched reliability and packaging with inverted logic - making it a functional alternative only when polarity inversion is acceptable or required in the signal chain.
Availability
JM38510/32404BRA is available at Aetrix Electronics and suitable for avionics data bus interface, tactical radio baseband processing, and nuclear command & control system I/O requiring stable component supply across extended temperature and long lifecycle programs.
Supply support for JM38510/32404BRA 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 founded in 1930, specializing in analog, embedded processing, and high-reliability military ICs with over 90 years of aerospace and defense component leadership.
JM38510/32404BRA belongs to TI's 54LS family of radiation-tolerant, high-temperature logic devices engineered specifically for mission-critical defense electronics where failure is not an option.
FAQ
What is the maximum propagation delay for JM38510/32404BRA across its full operating temperature range?
The maximum propagation delay (tPLH and tPHL) for JM38510/32404BRA is 30 ns at VCC = 5.0 V and TA = –55°C to +125°C, as verified per MIL-STD-883 Method 3003. This value includes process, voltage, and temperature extremes - critical for timing budgeting in synchronous bus designs using JM38510/32404BRA.
Does JM38510/32404BRA support hot-swap or live-insertion into a powered backplane?
JM38510/32404BRA includes input clamp diodes that allow limited overvoltage tolerance (–1.2 V min), but it does not feature true hot-swap protection such as current limiting or slew-controlled outputs. Insertion into a live backplane is not recommended unless external series resistors and TVS protection are implemented - JM38510/32404BRA itself lacks integrated hot-swap circuitry.
What is the output leakage current specification for JM38510/32404BRA in 3-state mode?
In high-impedance (3-state) mode, JM38510/32404BRA guarantees output leakage current of ±5 µA maximum at VCC = 5.0 V and TA = –55°C to +125°C per MIL-STD-883 Test Method 3001.1. This low leakage ensures minimal bus loading when JM38510/32404BRA outputs are disabled, preserving signal integrity on shared data lines.
Can JM38510/32404BRA be used interchangeably with commercial SN74LS540 devices?
No - JM38510/32404BRA is not interchangeable with commercial SN74LS540 due to fundamental differences in qualification, temperature range, and test rigor. SN74LS540 operates only from 0°C to +70°C and lacks MIL-PRF-38535 Class B screening. Substituting JM38510/32404BRA for SN74LS540 is acceptable in military designs, but reverse substitution violates environmental and reliability requirements for JM38510/32404BRA.
What package variants are available for JM38510/32404BRA besides the CDIP-20?
JM38510/32404BRA is exclusively offered in the CDIP-20 (J package) configuration per TI's official packaging addendum. Alternate packages such as LCCC (FK) or CFP (W) exist for related part numbers like JM38510/32404B2A or SNJ54LS541W, but those are distinct orderables - JM38510/32404BRA itself has no LCCC or CFP variant.
JM38510/32404BRA 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:
- -
JM38510/32404BRA FAQ
1.How can I place an order for JM38510/32404BRA through Aetrix?
Please submit a Request for Quotation (RFQ) for JM38510/32404BRA 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 JM38510/32404BRA reliable?
The price and inventory of JM38510/32404BRA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/32404BRA is usually 5 days.
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JM38510/32404BRA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JM38510/32404BRA 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 JM38510/32404BRA?
For technical support, including JM38510/32404BRA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/32404BRA requirements.
6.How does Aetrix verify that JM38510/32404BRA is sourced from the original manufacturer or authorized distributors?
All JM38510/32404BRA 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 JM38510/32404BRA meets industry standards.
7.What is the process for return or replacement of JM38510/32404BRA?
All JM38510/32404BRA units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/32404BRA, 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 JM38510/32404BRA part is unused and in its original packaging.
Return procedure for JM38510/32404BRA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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