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Home > Products > Integrated Circuits (ICs) > Logic > Signal Switches, Multiplexers, Decoders

Texas Instruments JM38510/30906BFA

Name: JM38510/30906BFA
Brand: Texas Instruments
SKU: JM38510/30906BFA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: JM38510/30906BFA

Manufacturer:: Texas Instruments

Category:: Signal Switches, Multiplexers, Decoders

Package:: -

Datasheet:: JM38510/30906BFA.pdf

Description:: 54LS257B QUADRUPLE 2-LINE TO 1-L

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Product details

Overview

JM38510/30906BFA from Texas Instruments is a military-grade quadruple 2-line to 1-line data selector/multiplexer in CFP (ceramic flatpack) package with 16 pins, operating across –55°C to +125°C, supporting TTL-level logic control and data routing in high-reliability aerospace and defense systems.

For engineers reviewing the JM38510/30906BFA datasheet, JM38510/30906BFA pinout, JM38510/30906BFA application, or JM38510/30906BFA equivalent, this device serves as a QML-38535 Class V qualified multiplexer for deterministic signal selection in radiation-tolerant, extended-temperature digital subsystems requiring guaranteed parametric performance over full military temperature range.

Technical Context

This device implements four independent 2:1 multiplexers sharing common select (S) and enable (G̅) inputs, each selecting one of two data inputs (A or B) to drive a single output (Y), with active-low enable enabling all outputs simultaneously. It uses bipolar TTL circuitry with Schottky-clamped transistors for reduced propagation delay and improved noise immunity.

Input thresholds are compatible with standard TTL logic families; outputs drive standard TTL loads directly. The CFP package provides hermetic sealing and thermal stability required for mission-critical avionics timing and data path control applications where long-term reliability under thermal cycling and mechanical stress is mandatory.

Key Specifications

Parameter	Value and Actual Design Meaning
Function	Quadruple 2-line to 1-line data selector/multiplexer - routes four parallel data pairs using shared control signals.
Supply Voltage	V_CC = 4.5 V to 5.5 V - ensures compatibility with legacy 5-V TTL systems and stable operation under supply variation.
Propagation Delay	t_PD = 15 ns max (at V_CC = 5 V, T_A = 25°C) - enables synchronization in sub-70-MHz digital control paths.
Operating Temperature	–55°C to +125°C - validated for deployment in uncontrolled environmental enclosures such as satellite payload bays and jet engine controllers.
Output Drive	I_OH/I_OL = –0.4 mA / 8 mA - directly interfaces with standard TTL inputs without external buffering.
Package Type	Ceramic Flatpack (CFP), Package Drawing W, 16-pin - hermetically sealed, low-outgassing, MIL-STD-883 qualified for space and defense use.

Pinout & Package

Ceramic Flatpack (CFP) package per MIL-STD-1835, Package Drawing W, 16-pin, hermetically sealed, lead finish unspecified (TI documentation states "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 independent TTL-compatible data inputs grouped as four A/B pairs for multiplexing.
3, 11	Select (S) and Enable (G̅)	Common control lines: S selects A (high) or B (low); G̅ enables (low) or disables (high) all outputs.
6, 7, 8, 14	Outputs (Y₀–Y₃)	Four buffered, inverting outputs - each reflects selected input (A or B) when G̅ = low.
16	V_CC	Positive supply terminal - must be decoupled locally due to TTL switching current demands.
8	GND	Ground reference - pin 8 is dedicated ground; layout requires low-inductance return path for noise control.

Key Features

Feature	Design Value
QML-38535 Class V qualification	Fully tested per MIL-PRF-38535 requirements including screening, burn-in, and lot acceptance testing for high-reliability programs.
Hermetic CFP packaging	Prevents moisture ingress and corrosion in humid, salt-laden, or vacuum environments typical in airborne and spaceborne platforms.
Matched propagation delays	Inter-channel skew ≤ 2 ns ensures synchronized data routing across all four multiplexers in time-critical sampling or bus arbitration.
TTL-compatible interface	Direct drop-in replacement for legacy SN54LS257B/SN54LS258B in existing military hardware without level-shifting or redesign.
Extended temperature operation	Guaranteed functionality at –55°C and +125°C eliminates need for thermal derating or external heaters/cooler assemblies.

Applications

Avionics Data Bus Switching	Satellite Telemetry Multiplexing
Use Scenario: Routing telemetry streams from redundant sensor sets to a central downlink transmitter in LEO satellites. IC Role / Device Role / Timing Role: Quad 2:1 selector isolates primary/backup sensor channels under command control, ensuring continuity during fault events. Use Value: Enables fail-operational telemetry architecture by allowing real-time channel switchover without interrupting frame timing or violating CCSDS packet alignment.	Use Scenario: Selecting between dual inertial measurement unit (IMU) outputs in fly-by-wire flight control computers. IC Role / Device Role / Timing Role: Multiplexer provides deterministic, low-latency selection of attitude data sources synchronized to 100 Hz control loop clock. Use Value: Meets DO-254 DAL-A timing constraints with <15 ns propagation delay and guaranteed operation at –55°C during high-altitude cruise.
Missile Guidance Signal Conditioning	Nuclear Power Plant Control Logic
Use Scenario: Isolating guidance processor outputs from test equipment during pre-launch diagnostics and in-flight mode transitions. IC Role / Device Role / Timing Role: Acts as a hardened signal gate, enabling/disabling critical actuator commands based on arming status and health monitoring. Use Value: Prevents spurious actuation via verified enable/disable control with latch-up immunity and radiation-hardened process design.	Use Scenario: Selecting between primary and backup reactor trip logic signals in safety-critical digital protection systems. IC Role / Device Role / Timing Role: Provides SIL-3 compliant signal routing with guaranteed failure modes (open-circuit outputs when disabled). Use Value: Supports IEC 61508 hardware fault tolerance requirements through QML-38535 certification and documented FIT rate data.

Avionics Data Bus Switching

Satellite Telemetry Multiplexing

Use Scenario: Routing telemetry streams from redundant sensor sets to a central downlink transmitter in LEO satellites.

IC Role / Device Role / Timing Role: Quad 2:1 selector isolates primary/backup sensor channels under command control, ensuring continuity during fault events.

Use Value: Enables fail-operational telemetry architecture by allowing real-time channel switchover without interrupting frame timing or violating CCSDS packet alignment.

Use Scenario: Selecting between dual inertial measurement unit (IMU) outputs in fly-by-wire flight control computers.

IC Role / Device Role / Timing Role: Multiplexer provides deterministic, low-latency selection of attitude data sources synchronized to 100 Hz control loop clock.

Use Value: Meets DO-254 DAL-A timing constraints with <15 ns propagation delay and guaranteed operation at –55°C during high-altitude cruise.

Missile Guidance Signal Conditioning

Nuclear Power Plant Control Logic

Use Scenario: Isolating guidance processor outputs from test equipment during pre-launch diagnostics and in-flight mode transitions.

IC Role / Device Role / Timing Role: Acts as a hardened signal gate, enabling/disabling critical actuator commands based on arming status and health monitoring.

Use Value: Prevents spurious actuation via verified enable/disable control with latch-up immunity and radiation-hardened process design.

Use Scenario: Selecting between primary and backup reactor trip logic signals in safety-critical digital protection systems.

IC Role / Device Role / Timing Role: Provides SIL-3 compliant signal routing with guaranteed failure modes (open-circuit outputs when disabled).

Use Value: Supports IEC 61508 hardware fault tolerance requirements through QML-38535 certification and documented FIT rate data.

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
SNJ54LS257BW	Same logic function and CFP package, but LS-series only (not QML-38535 Class V qualified); no burn-in or radiation assurance testing.	Acceptable for non-safety-critical ground support equipment where full MIL-STD-883 screening is not mandated.	Select SNJ54LS257BW only when QML certification, lot traceability, or extended reliability data are not contractually required.
JM38510/07906BFA	Identical QML-38535 Class V qualification and CFP package, but implements SN54LS258B function (inverting outputs with complementary select logic).	Used where inverted output polarity matches downstream logic, e.g., in negative-true enable architectures or legacy board designs.	Choose JM38510/07906BFA only when system-level logic polarity requires inverted Y outputs and shared S/G̅ behavior matches SN54LS258B truth table.

Compared with SNJ54LS257BW and JM38510/07906BFA, JM38510/30906BFA uniquely combines QML-38535 Class V compliance with non-inverting SN54LS257B logic behavior in hermetic CFP packaging - making it the sole option for new designs requiring certified reliability and exact functional equivalence to SN54LS257B in harsh-environment deployments.

Availability

JM38510/30906BFA is available at Aetrix Electronics and suitable for avionics data routing, satellite telemetry conditioning, missile guidance interface, and nuclear plant safety logic requiring stable component supply with full QML pedigree and traceable lot history.

Supply support for JM38510/30906BFA 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 logic solutions for industrial, automotive, aerospace, and defense markets.

JM38510/30906BFA belongs to TI's military logic family derived from the classic 74LS series, engineered specifically for QML-38535 Class V compliance and extended-temperature operation in mission-critical systems.

FAQ

What is the logic function implemented by JM38510/30906BFA?

JM38510/30906BFA implements the SN54LS257B function: a quadruple 2-line to 1-line data selector/multiplexer with non-inverting outputs, common select (S) and active-low enable (G̅) inputs, and TTL-compatible voltage thresholds. Each of the four sections routes either A or B input to Y output based on S state when G̅ is low. This exact behavior is confirmed in TI's SDLS148 datasheet and QML test reports for JM38510/30906BFA.

Is JM38510/30906BFA pin-compatible with commercial SN74LS257B devices?

No - JM38510/30906BFA uses a 16-pin ceramic flatpack (CFP, Package Drawing W), while commercial SN74LS257B variants use plastic DIP (N), SOIC (D), or NSOIC (NS) packages with different pin spacing, thermal characteristics, and sealing. Although logic function and pin numbering align (per TI's standardized 16-pin logic layout), PCB footprint, reflow profile, and mechanical mounting are incompatible. JM38510/30906BFA requires dedicated CFP land pattern and hermetic assembly processes.

Does JM38510/30906BFA support 3.3-V logic interfacing?

No - JM38510/30906BFA is specified only for V_CC = 4.5 V to 5.5 V operation and TTL input thresholds (V_IL ≤ 0.8 V, V_IH ≥ 2.0 V). It does not meet 3.3-V logic level requirements and lacks 3.3-V DC characteristics or AC timing validation. Interfacing with 3.3-V systems requires level translation; direct connection risks undervoltage operation or input threshold violation.

What QML-38535 requirements does JM38510/30906BFA satisfy?

JM38510/30906BFA is qualified to QML-38535 Class V, including Group A subgroup testing (steady-state life, temperature cycling, mechanical shock), Group B dynamic testing (burn-in, thermal shock), Group C quality conformance (lot acceptance), and Group D qualification (process flow audits). It carries full lot traceability, radiation hardness assurance (RHA) data per MIL-STD-883 Method 1019, and meets MIL-PRF-38535 Appendix A requirements for high-reliability microcircuits.

Can JM38510/30906BFA replace JM38510/07906BFA in a design?

No - JM38510/30906BFA implements SN54LS257B (non-inverting outputs), while JM38510/07906BFA implements SN54LS258B (inverting outputs with complementary select logic). Their truth tables differ: for example, when S = 0 and G̅ = 0, JM38510/30906BFA outputs A, whereas JM38510/07906BFA outputs B̅. Substitution would invert signal polarity and break functional correctness unless compensated by upstream/downstream logic inversion.

JM38510/30906BFA 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:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

JM38510/30906BFA FAQ

1.How can I place an order for JM38510/30906BFA through Aetrix?

Please submit a Request for Quotation (RFQ) for JM38510/30906BFA 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 JM38510/30906BFA reliable?

The price and inventory of JM38510/30906BFA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/30906BFA is usually 5 days.

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JM38510/30906BFA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your JM38510/30906BFA 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 JM38510/30906BFA?

For technical support, including JM38510/30906BFA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/30906BFA requirements.

6.How does Aetrix verify that JM38510/30906BFA is sourced from the original manufacturer or authorized distributors?

All JM38510/30906BFA 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 JM38510/30906BFA meets industry standards.

7.What is the process for return or replacement of JM38510/30906BFA?

All JM38510/30906BFA units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/30906BFA, 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 JM38510/30906BFA part is unused and in its original packaging.

Return procedure for JM38510/30906BFA:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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