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Texas Instruments JM38510/30906BEA
- Part No.:
- JM38510/30906BEA
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- -
- Datasheet:
-
JM38510/30906BEA.pdf
- Description:
- 54LS257B QUADRUPLE 2-LINE TO 1-L
- Quantity:
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Inventory:183
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Product details
Overview
JM38510/30906BEA from Texas Instruments is a military-grade quadruple 2-line to 1-line data selector/multiplexer IC operating across –55°C to +125°C, featuring TTL-compatible inputs and outputs, 16-pin CDIP (J) package, and dual enable control per section for independent channel gating in high-reliability digital logic systems.
For engineers reviewing the JM38510/30906BEA datasheet, JM38510/30906BEA pinout, JM38510/30906BEA application, or JM38510/30906BEA equivalent, this device supports deterministic signal routing in avionics data buses, radiation-tolerant test instrumentation, and legacy MIL-STD-1553 interface logic where quad-channel selectivity, wide temperature operation, and QML-38510 qualification are required.
Technical Context
The JM38510/30906BEA implements four independent 2:1 multiplexers in a single monolithic TTL circuit, each with separate data inputs (A/B), common output (Y), and dual active-low enable (G1/G2) pins enabling per-section output disable. It uses standard bipolar LS (low-power Schottky) transistor technology for balanced speed–power trade-off.
Its logic function conforms to the SN54LS257B family specification SDLS148 (Oct 1976, Rev Mar 1988), supporting fan-out of 10 LS-TTL loads, propagation delay of 15 ns typical at VCC = 5 V, and guaranteed noise margins of 0.4 V (high) and 0.4 V (low) under full military temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Quadruple 2-line to 1-line data selector/multiplexer - enables four parallel 2:1 signal routing paths with independent gating. |
| Logic Family | TTL LS (Low-Power Schottky) - ensures compatibility with legacy 74LS logic families and predictable DC/AC behavior. |
| Operating Temperature | –55°C to +125°C - qualified for extended-range military and aerospace applications without derating. |
| Supply Voltage | 4.5 V to 5.5 V - maintains stable operation across nominal 5 V rail tolerances in ruggedized power environments. |
| Propagation Delay | 15 ns typical (A/B to Y), 20 ns max - supports synchronous data switching up to ~33 MHz in critical timing paths. |
| Output Drive | IOH = –0.4 mA, IOL = 8 mA - sufficient to drive 10 LS-TTL loads directly without buffering in distributed logic networks. |
| Enable Logic | Active-low dual enable (G1, G2) per section - allows selective channel isolation while preserving other sections active. |
Pinout & Package
Package: 16-pin Ceramic Dual In-line Package (CDIP), Package Drawing J, hermetically sealed, lead finish unspecified (Call TI), MSL not applicable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 9, 10, 12, 13 | Data Inputs (A₀–A₃, B₀–B₃) | Eight total data inputs - two per multiplexer section (A/B), routed to internal gates based on select state. |
| 3, 6, 11, 14 | Outputs (Y₀–Y₃) | Four independent buffered outputs - each reflects selected A or B input when corresponding G1/G2 are low. |
| 7, 15 | Ground (GND) / VCC | Pin 7 = GND, Pin 15 = VCC - standard dual-rail power configuration for 16-pin DIP logic devices. |
| 8 | Common Ground Reference | Pin 8 = GND - primary ground reference for all sections; no signal or control function. |
| 16 | VCC | Positive supply terminal - must be decoupled locally to suppress switching noise in high-density layouts. |
| 17–18 (N/A) | Not Applicable | No pins 17–18 - 16-pin package; numbering ends at Pin 16. |
Key Features
| Feature | Design Value |
|---|---|
| QML-38510 Qualified | Meets MIL-PRF-38535 Class B requirements including screening, lot traceability, and extended environmental testing. |
| Dual Enable Control | Each of four multiplexers has two independent active-low enables (G1/G2), allowing precise per-channel output disable. |
| Wide-Temperature Operation | Guaranteed functionality from –55°C to +125°C without performance degradation or parameter drift beyond spec limits. |
| TTL-Compatible Interface | Input thresholds and output voltage levels match standard 74LS logic, enabling drop-in replacement in legacy designs. |
| Hermetic CDIP Packaging | Ceramic DIP (J) construction provides moisture resistance and long-term reliability in high-humidity or vacuum environments. |
Applications
| Avionics Data Bus Interface | MIL-STD-1553 Test Instrumentation |
|---|---|
|
Use Scenario: Routing discrete status signals from multiple Line Replaceable Units (LRUs) to a central bus controller in airborne platforms. IC Role / Device Role / Timing Role: Quad 2:1 selector isolates and forwards health-monitoring bits (e.g., power OK, fault flag) under command-driven select lines. Use Value: Enables compact, radiation-tolerant signal consolidation without FPGA or microcontroller overhead in safety-critical flight control subsystems. |
Use Scenario: Emulating dynamic bus traffic patterns during MIL-STD-1553 protocol validation using programmable stimulus generators. IC Role / Device Role / Timing Role: Multiplexes test pattern sources (valid vs. corrupted frames) into a single physical bus line under real-time control. Use Value: Provides deterministic, low-jitter signal selection essential for bit-level timing compliance verification across temperature extremes. |
| Secure Crypto Module I/O Switching | Ruggedized Industrial PLC Backplane |
|
Use Scenario: Selecting between primary and backup cryptographic key streams in tamper-responsive hardware security modules. IC Role / Device Role / Timing Role: Acts as failover gate for encrypted data paths, activated only upon integrity check failure. Use Value: Delivers sub-20 ns switching with zero metastability risk-critical for maintaining side-channel attack resistance during key reconfiguration. |
Use Scenario: Managing analog sensor input routing across redundant ADC channels in oil & gas downhole controllers exposed to thermal cycling. IC Role / Device Role / Timing Role: Routes conditioned sensor outputs (e.g., pressure, temperature) to designated A/D converters based on channel health status. Use Value: Ensures uninterrupted measurement continuity via hardware-level redundancy-no firmware intervention required during field operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quadruple 2:1 multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SNJ54LS257BJ | Identical logic function, same CDIP-J package and military temperature range; differs only in device marking and ordering prefix. | No functional difference; both meet QML-38510 Class B, but SNJ54LS257BJ uses older TI part-numbering convention. | Select SNJ54LS257BJ if sourcing from legacy inventory or cross-referencing against historical procurement documents. |
| JM38510/07906BEA | Same LS logic family and pinout, but implements dual 4:1 multiplexers instead of quad 2:1 - different internal routing architecture and select-bit mapping. | Suitable for applications requiring fewer channels with wider input selection (e.g., 4-input priority encoding), not direct functional substitution. | Choose JM38510/07906BEA only when system-level logic requires 4:1 topology; verify truth table alignment before board-level reuse. |
Compared with SNJ54LS257BJ, JM38510/30906BEA offers identical electrical and mechanical specifications but updated documentation traceability under current QML-38510 revision cycles; JM38510/07906BEA serves distinct routing needs and cannot replace JM38510/30906BEA without redesigning select logic and signal grouping.
Availability
JM38510/30906BEA is available at Aetrix Electronics and suitable for avionics integration, defense electronics manufacturing, and space-qualified subsystem development requiring stable component supply with full QML-38510 documentation and traceability.
Supply support for JM38510/30906BEA 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 founded in 1930, specializing in analog, embedded processing, and high-reliability logic solutions for aerospace, defense, and industrial markets.
JM38510/30906BEA belongs to TI's QML-38510-certified TTL logic product line, designed specifically for mission-critical systems demanding guaranteed parametric performance across extreme environmental conditions.
FAQ
What is the logic function of JM38510/30906BEA?
JM38510/30906BEA implements four independent 2-line to 1-line data selectors/multiplexers, each with two data inputs (A/B), one output (Y), and dual active-low enable controls (G1/G2). Its truth table matches the SN54LS257B specification per SDLS148, delivering deterministic signal routing without internal latching or clocking. The device operates strictly combinatorially, making JM38510/30906BEA ideal for static and dynamic data path selection in synchronous digital systems.
Is JM38510/30906BEA pin-compatible with commercial SN74LS257B variants?
No, JM38510/30906BEA is not pin-compatible with commercial SN74LS257B variants due to differing temperature range, packaging, and qualification level. While both share identical pin functions and logic behavior, JM38510/30906BEA uses a 16-pin CDIP (J) package rated for –55°C to +125°C and QML-38510 Class B screening, whereas SN74LS257B typically appears in plastic DIP (N) or SOIC (D) packages rated 0°C to +70°C. Physical layout reuse requires verifying footprint, thermal relief, and solder mask clearances.
Does JM38510/30906BEA support 3.3 V operation?
No, JM38510/30906BEA is specified only for 4.5 V to 5.5 V supply operation and does not guarantee functionality at 3.3 V. Its TTL LS input thresholds (VIH min = 2.0 V, VIL max = 0.8 V) and output drive characteristics are optimized for 5 V rails. Attempting 3.3 V operation may result in marginal noise margins, increased propagation delay, or failure to meet fan-out requirements. For 3.3 V systems, consider modern 74LVC or 74ALVC logic families instead of JM38510/30906BEA.
What is the maximum clock/data rate supported by JM38510/30906BEA?
JM38510/30906BEA does not operate on a clock; it is a purely combinational multiplexer. Its usable data switching rate is limited by propagation delay (15 ns typical, 20 ns max) and transition time. Assuming clean edges and proper termination, reliable operation is achievable up to approximately 33 MHz for repetitive toggling, though setup/hold timing must be verified per application. For high-speed serial protocols, JM38510/30906BEA serves best in control-path or status-routing roles-not data-path serialization.
Where can I find the official datasheet for JM38510/30906BEA?
The official technical documentation for JM38510/30906BEA is consolidated under Texas Instruments' SDLS148 datasheet (October 1976, revised March 1988), which covers the entire SN54LS257B/SN54LS258B family-including all QML-38510 variants like JM38510/30906BEA. TI hosts SDLS148 on ti.com as a legacy PDF; Aetrix Electronics also provides direct access to the fully annotated version with package drawings, test reports, and QML-38510 compliance summaries for JM38510/30906BEA purchasers.
JM38510/30906BEA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
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- Independent Circuits:
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- Current - Output High, Low:
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- Voltage - Supply:
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JM38510/30906BEA FAQ
1.How can I place an order for JM38510/30906BEA through Aetrix?
Please submit a Request for Quotation (RFQ) for JM38510/30906BEA 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 JM38510/30906BEA reliable?
The price and inventory of JM38510/30906BEA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/30906BEA is usually 5 days.
3.What payment methods are accepted for JM38510/30906BEA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JM38510/30906BEA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JM38510/30906BEA?
JM38510/30906BEA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JM38510/30906BEA 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 JM38510/30906BEA?
For technical support, including JM38510/30906BEA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/30906BEA requirements.
6.How does Aetrix verify that JM38510/30906BEA is sourced from the original manufacturer or authorized distributors?
All JM38510/30906BEA 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 JM38510/30906BEA meets industry standards.
7.What is the process for return or replacement of JM38510/30906BEA?
All JM38510/30906BEA units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/30906BEA, 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 JM38510/30906BEA part is unused and in its original packaging.
Return procedure for JM38510/30906BEA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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