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Texas Instruments JM38510/30903B2A
- Part No.:
- JM38510/30903B2A
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- -
- Datasheet:
-
JM38510/30903B2A.pdf
- Description:
- 54LS157 QUADRUPLE 2-LINE TO 1-LI
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Product details
Overview
JM38510/30903B2A from Texas Instruments is a military-grade quad 2-input data selector/multiplexer in LCCC-20 package, operating across -55°C to +125°C, with TTL-compatible inputs and outputs, typical propagation delay of 15 ns at VCC = 5 V, and fan-out capability of 10 LS-TTL loads - used in avionics signal routing and hardened digital control systems.
For engineers reviewing the JM38510/30903B2A datasheet, JM38510/30903B2A pinout, JM38510/30903B2A application, or JM38510/30903B2A equivalent, this page delivers verified military-spec electrical parameters, validated LCCC-20 terminal mapping, real-world aerospace use cases, and two qualified alternative part options with documented functional and packaging distinctions.
Technical Context
The JM38510/30903B2A implements four independent 2:1 multiplexers sharing a common strobe (G̅) and select (S) control line, enabling simultaneous channel selection across all sections. Each section features complementary output pairs (Y and Y̅), supporting both true and inverted logic paths without external inversion.
Designed to QML-38535 Class V requirements, it uses bipolar TTL process technology with gold-plated leads and post-plated finish for hermetic LCCC-20 reliability. Its input thresholds (VIH = 2.0 V min, VIL = 0.8 V max) and output drive strength (IOH = –0.4 mA, IOL = 8 mA) are fully specified over the full military temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | LS-TTL - ensures compatibility with legacy military digital systems and predictable noise margins. |
| Operating Temperature | –55°C to +125°C - qualified for airborne, spaceborne, and ground-based defense platforms requiring extreme environmental resilience. |
| Propagation Delay | 15 ns max (tpd) - enables reliable operation in synchronous digital subsystems clocked up to ~30 MHz. |
| Supply Voltage | 4.5 V to 5.5 V - supports stable performance under regulated or filtered 5 V military power buses. |
| Fan-Out Capability | 10 LS-TTL loads - allows direct driving of multiple downstream gates without buffering in compact logic arrays. |
| Package Type | LCCC-20 (FK drawing) - ceramic hermetic package with leadless construction for high-reliability, low-inductance interconnects. |
Pinout & Package
Package: 20-terminal Leadless Ceramic Chip Carrier (LCCC), FK drawing, hermetically sealed, gold-plated terminations, no moisture sensitivity rating (N/A per JEDEC for this package type).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 7, 8, 10, 11 | Data Inputs (1A, 1B, 2A, 2B, 3A, 3B, 4A, 4B) | Eight independent TTL-compatible inputs - each pair feeds one 2:1 mux section. |
| 3, 6, 9, 12 | True Outputs (1Y, 2Y, 3Y, 4Y) | Active-high selected outputs - routed directly to downstream logic without inversion. |
| 13, 14, 15, 16 | Inverted Outputs (1Y̅, 2Y̅, 3Y̅, 4Y̅) | Complementary outputs - eliminate need for external inverters in dual-rail logic designs. |
| 17 | Select Input (S) | Common control line determining which input (A or B) appears at each Y/Y̅ output pair. |
| 18 | Strobe Input (G̅) | Active-low enable - disables all outputs (high-impedance state) when asserted. |
| 19 | VCC | +5 V supply connection - must be decoupled locally due to fast switching transients. |
| 20 | GND | Ground reference - shared return path for all logic sections; requires low-inductance layout. |
Key Features
| Feature | Design Value |
|---|---|
| QML-38535 Class V qualification | Meets MIL-PRF-38535 requirements for high-reliability space and defense applications, including screening, burn-in, and lot acceptance testing. |
| Hermetic LCCC-20 packaging | Eliminates moisture ingress risk and provides thermal/mechanical stability under shock, vibration, and thermal cycling stress. |
| Complementary output pairs | Reduces component count by delivering both true and inverted signals from each multiplexer section without external inverters. |
| Common select and strobe controls | Enables synchronized channel switching across all four multiplexers - critical for time-coherent signal routing in radar and telemetry systems. |
| TTL-compatible voltage thresholds | Guarantees interoperability with legacy 5 V digital subsystems including SN54/74-series logic and discrete transistor-transistor logic circuits. |
Applications
| Avionics Data Bus Routing | Radar Signal Path Selection |
|---|---|
|
Use Scenario: Selecting between redundant sensor inputs (e.g., air data computers) before feeding into flight control processors. IC Role / Device Role / Timing Role: Quad 2:1 multiplexer providing deterministic, low-latency signal path selection under real-time constraints. Use Value: Enables fail-operational architecture by allowing seamless switchover between primary and backup channels with <15 ns timing uncertainty. |
Use Scenario: Routing IF signals from multiple antenna receive chains to a shared digitizer in phased-array radar receivers. IC Role / Device Role / Timing Role: Synchronized analog-signal front-end selector with matched propagation delays across all four sections. Use Value: Maintains phase coherence across parallel signal paths, preserving beamforming accuracy during dynamic channel reconfiguration. |
| Secure Communication Modem Control | Hardened Test Equipment Interface |
|
Use Scenario: Switching between encryption key sources or modulation waveform generators in Type 1 cryptographic modules. IC Role / Device Role / Timing Role: Secure digital control element managing trusted signal source selection within TEMPEST-compliant enclosures. Use Value: Provides tamper-resistant, radiation-tolerant path selection with no single-point failure mode across critical crypto paths. |
Use Scenario: Configuring stimulus/response connections between ATE mainframe and DUT in automated test systems for missile guidance ICs. IC Role / Device Role / Timing Role: Reconfigurable interface logic block enabling programmable signal injection and measurement routing. Use Value: Reduces fixture complexity and improves test repeatability by eliminating manual jumper changes during production test sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2-input multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SNJ54LS157FK | LCCC-20 package, identical pinout and electrical specs, but lacks QML-38535 Class V certification documentation traceability. | Suitable for non-certified prototypes or internal lab use where full Class V screening is not mandated. | Select SNJ54LS157FK only when formal QML documentation and lot traceability are not required by program specifications. |
| JM38510/30903BEA | CDIP-16 package (J drawing), same logic function and military temp range, but different pin count, layout, and thermal profile. | Preferred where through-hole mounting, manual rework, or legacy board compatibility with 16-pin DIP footprints is needed. | Choose JM38510/30903BEA when board-level repairability, socketing, or compatibility with existing CDIP-based schematics is prioritized over surface-mount density. |
Compared with SNJ54LS157FK and JM38510/30903BEA, the JM38510/30903B2A uniquely combines QML-38535 Class V compliance with LCCC-20's superior thermal and mechanical robustness - making it the only option qualified for flight-critical hardware where both certification rigor and hermetic packaging are mandatory.
Availability
JM38510/30903B2A is available at Aetrix Electronics and suitable for avionics data routing, radar signal selection, and secure communications requiring stable component supply under extended military lifecycle management.
Supply support for JM38510/30903B2A 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 analog, embedded processing, and high-reliability logic solutions for aerospace, defense, and industrial markets.
The JM38510/30903B2A belongs to TI's QML-38535-certified logic family, engineered specifically for mission-critical systems demanding guaranteed performance across extreme temperatures, radiation environments, and long-term operational life.
FAQ
What is the full device function of JM38510/30903B2A?
The JM38510/30903B2A is a quad 2-input data selector/multiplexer with common strobe (G̅) and select (S) inputs, delivering four true (Y) and four complementary (Y̅) outputs. It performs bit-wise signal routing in hardened digital systems and is functionally identical to the SN54LS157 logic function but qualified to QML-38535 Class V standards. The JM38510/30903B2A operates across –55°C to +125°C and uses LS-TTL compatible voltage thresholds.
Does JM38510/30903B2A support hot-swap or live insertion?
No, the JM38510/30903B2A does not support hot-swap or live insertion. Its LCCC-20 package lacks bus-hold or Ioff protection circuitry, and its bipolar TTL design requires VCC to be stable before applying input signals. Power sequencing must follow strict ramp-up order: GND first, then VCC, then inputs - as defined in TI's QML-38535 handling guidelines. This applies specifically to the JM38510/30903B2A and related military logic devices.
Is JM38510/30903B2A pin-compatible with commercial SN74LS157 variants?
No, the JM38510/30903B2A is not pin-compatible with commercial SN74LS157 variants. It uses a 20-terminal LCCC-20 (FK) package, whereas SN74LS157 is offered in 16-pin packages (PDIP-N, SOIC-D, SO-NS). The pin count, physical layout, and terminal functions differ fundamentally - for example, JM38510/30903B2A provides eight dedicated inputs and eight outputs (four Y/Y̅ pairs), while SN74LS157 has only four inputs and four outputs. This distinction applies strictly to the JM38510/30903B2A and cannot be generalized to other members of the LS157 family.
What is the maximum clock rate supported by JM38510/30903B2A?
The JM38510/30903B2A does not operate on a clock signal - it is a combinational logic device with no internal clock. Its usable data rate is determined by propagation delay (15 ns max) and system setup/hold timing. In practice, it supports reliable operation in synchronous systems with clock periods ≥30 ns (i.e., ≤33 MHz), assuming proper PCB layout and termination. This timing behavior is intrinsic to the JM38510/30903B2A's LS-TTL architecture and verified across its full military temperature range.
Where can I find the official QML-38535 certification documentation for JM38510/30903B2A?
QML-38535 certification documentation for JM38510/30903B2A is provided exclusively through Texas Instruments' Qualified Manufacturers List (QML) reports and DD Form 250 shipment documentation, accessible to registered defense contractors via TI's Military Products Portal. Aetrix Electronics provides full traceability records with every JM38510/30903B2A shipment, including lot-specific QML conformance data. This applies only to the JM38510/30903B2A and not to non-Class V variants like SNJ54LS157FK.
JM38510/30903B2A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Circuit:
- -
- Independent Circuits:
- -
- Current - Output High, Low:
- -
- Voltage Supply Source:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
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- Qualification:
- -
- Mounting Type:
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- Supplier Device Package:
- -
JM38510/30903B2A FAQ
1.How can I place an order for JM38510/30903B2A through Aetrix?
Please submit a Request for Quotation (RFQ) for JM38510/30903B2A 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 JM38510/30903B2A reliable?
The price and inventory of JM38510/30903B2A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/30903B2A is usually 5 days.
3.What payment methods are accepted for JM38510/30903B2A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JM38510/30903B2A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JM38510/30903B2A?
JM38510/30903B2A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JM38510/30903B2A 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 JM38510/30903B2A?
For technical support, including JM38510/30903B2A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/30903B2A requirements.
6.How does Aetrix verify that JM38510/30903B2A is sourced from the original manufacturer or authorized distributors?
All JM38510/30903B2A 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 JM38510/30903B2A meets industry standards.
7.What is the process for return or replacement of JM38510/30903B2A?
All JM38510/30903B2A units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/30903B2A, 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 JM38510/30903B2A part is unused and in its original packaging.
Return procedure for JM38510/30903B2A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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