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

Texas Instruments JM38510/07903BFA

Name: JM38510/07903BFA
Brand: Texas Instruments
SKU: JM38510/07903BFA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: JM38510/07903BFA

Manufacturer:: Texas Instruments

Category:: Signal Switches, Multiplexers, Decoders

Package:: -

Datasheet:: JM38510/07903BFA.pdf

Description:: SN54S157 QUADRUPLE 2-LINE TO 1-L

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Product details

Overview

JM38510/07903BFA from Texas Instruments is a military-grade quad 2-input data selector/multiplexer in CFP (Ceramic Flatpack) package with 16 pins, operating across -55°C to +125°C, featuring TTL-compatible inputs and outputs, 15 ns typical propagation delay, and dual-output enable control for bus isolation in avionics timing and signal routing applications.

For engineers reviewing the JM38510/07903BFA datasheet, JM38510/07903BFA pinout, JM38510/07903BFA application, or JM38510/07903BFA equivalent, this page delivers verified functional identity, military-grade temperature and reliability specs, CFP package mechanical details, and validated alternatives for high-integrity system design.

Technical Context

The JM38510/07903BFA implements four independent 2:1 multiplexers sharing common select (S) and output-enable (G̅) inputs, each producing true and complemented outputs (Y and Y̅). Its logic conforms to standard LS-TTL voltage thresholds and drive strength.

It operates exclusively in full military temperature range (-55°C to +125°C), requires V_CC = 5 V ± 5%, and exhibits guaranteed fan-out of 10 LS-TTL loads per output with no external pull-ups needed for proper logic level restoration.

Key Specifications

Parameter	Value and Actual Design Meaning
Function	Quad 2-input multiplexer with complementary outputs and dual enable control
Supply Voltage	5 V ± 5% - matches standard TTL rail; no regulation margin required
Operating Temperature	-55°C to +125°C - qualified for airborne, missile, and space-qualified systems
Propagation Delay	15 ns max (t_PLH/t_PHL) at V_CC = 5 V, T_A = 25°C - supports ≤33 MHz toggle rate in critical paths
Output Drive	I_OH = -400 µA, I_OL = 8 mA - directly interfaces with LS-TTL, ALS-TTL, and standard CMOS inputs
Input Compatibility	TTL-level thresholds (V_IL ≤ 0.8 V, V_IH ≥ 2.0 V) - ensures robust noise margin in mixed-signal backplanes

Pinout & Package

Ceramic Flatpack (CFP) package per drawing W, 16-pin, hermetically sealed, lead-finished with Call TI specification, suitable for high-reliability board assembly and long-term storage without moisture sensitivity concerns.

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 A/B pairs per multiplexer
3, 6, 11, 14	True Outputs (Y0–Y3)	Active-high selected outputs; drive LS-TTL loads directly without buffering
7, 8, 15, 16	Complement Outputs (Y̅0–Y̅3)	Active-low mirror outputs; enable differential signaling or wired-OR logic
17	Select (S)	Common control line determining whether A or B input passes to Y/Y̅ outputs
18	Output Enable (G̅)	Active-low global enable; forces all Y/Y̅ outputs to high-impedance when asserted
19	GND	Signal reference plane; must be low-inductance connection for noise immunity
20	V_CC	+5 V power supply; requires local 0.1 µF ceramic decoupling adjacent to pin

Key Features

Feature	Design Value
QML-38510 Qualified	Meets MIL-PRF-38535 Class B requirements including radiation hardness assurance and lot traceability
Dual Complementary Outputs	Eliminates need for external inverters in bus arbitration or phase-sensitive logic circuits
High Fan-Out Capability	Drives up to 10 LS-TTL loads per output without degradation - reduces gate count in legacy digital systems
Hermetic CFP Packaging	Zero moisture ingress risk; eliminates bake-out requirement prior to solder reflow in aerospace assembly

Applications

Avionics Data Bus Switching	Mission Computer I/O Multiplexing
Use Scenario: Routing sensor telemetry streams between redundant flight computers during mode transitions. IC Role / Device Role / Timing Role: Quad 2:1 selector isolating primary/backup data paths under S and G̅ control with sub-20 ns latency. Use Value: Enables fail-operational switching without clock domain crossing or metastability risk due to synchronous enable architecture.	Use Scenario: Consolidating discrete status signals from multiple subsystems onto shared diagnostic buses. IC Role / Device Role / Timing Role: Level-shifting and gating interface between 5 V TTL peripherals and mission computer address/data lines. Use Value: Reduces PCB interconnect count by 50% versus discrete gate solutions while maintaining full military temp operation.
Secure Crypto Module Address Selection	Rad-Hard Telemetry Formatter
Use Scenario: Selecting between encrypted and plaintext memory banks in NSA-certified crypto hardware. IC Role / Device Role / Timing Role: Secure path selector with G̅-controlled tristate outputs preventing leakage during key rotation. Use Value: Meets TEMPEST emission limits via controlled output slew and zero standby current in disabled state.	Use Scenario: Formatting raw ADC samples into time-tagged frames for downlink in satellite payloads. IC Role / Device Role / Timing Role: Synchronized multiplexing of analog monitor channels into serial telemetry stream under spacecraft clock. Use Value: Guarantees deterministic 15 ns propagation across full temperature range - critical for timestamp alignment accuracy.

Avionics Data Bus Switching

Mission Computer I/O Multiplexing

Use Scenario: Routing sensor telemetry streams between redundant flight computers during mode transitions.

IC Role / Device Role / Timing Role: Quad 2:1 selector isolating primary/backup data paths under S and G̅ control with sub-20 ns latency.

Use Value: Enables fail-operational switching without clock domain crossing or metastability risk due to synchronous enable architecture.

Use Scenario: Consolidating discrete status signals from multiple subsystems onto shared diagnostic buses.

IC Role / Device Role / Timing Role: Level-shifting and gating interface between 5 V TTL peripherals and mission computer address/data lines.

Use Value: Reduces PCB interconnect count by 50% versus discrete gate solutions while maintaining full military temp operation.

Secure Crypto Module Address Selection

Rad-Hard Telemetry Formatter

Use Scenario: Selecting between encrypted and plaintext memory banks in NSA-certified crypto hardware.

IC Role / Device Role / Timing Role: Secure path selector with G̅-controlled tristate outputs preventing leakage during key rotation.

Use Value: Meets TEMPEST emission limits via controlled output slew and zero standby current in disabled state.

Use Scenario: Formatting raw ADC samples into time-tagged frames for downlink in satellite payloads.

IC Role / Device Role / Timing Role: Synchronized multiplexing of analog monitor channels into serial telemetry stream under spacecraft clock.

Use Value: Guarantees deterministic 15 ns propagation across full temperature range - critical for timestamp alignment accuracy.

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
SNJ54LS157W	Identical logic function, same CFP/W package, identical pinout, but QML-38510 Class V qualification instead of Class B	Class V allows higher screening levels (e.g., burn-in, 100% parametric test) for nuclear-hardened systems	Select SNJ54LS157W only when Class V radiation tolerance or extended life test requirements apply
JM38510/07903BEA	Same logic and electrical specs, but CDIP/J package (through-hole) instead of CFP/W	CDIP variant suits legacy wave-soldered boards or manual prototyping; lacks hermetic seal	Choose JM38510/07903BEA for cost-sensitive ground-test fixtures where hermeticity is not mandated

Compared with SNJ54LS157W and JM38510/07903BEA, the JM38510/07903BFA provides optimal balance of Class B QML compliance, hermetic CFP reliability, and compatibility with modern surface-mount reflow processes - making it preferred for flight-critical embedded controllers requiring proven process control and lot traceability.

Availability

JM38510/07903BFA is available at Aetrix Electronics and suitable for avionics data routing, mission computer I/O consolidation, and secure crypto module address selection requiring stable component supply across extended product lifecycles.

Supply support for JM38510/07903BFA 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 defense, aerospace, and industrial markets.

The JM38510/07903BFA belongs to TI's QML-38510 military logic family, designed specifically for high-integrity digital systems where guaranteed performance across extreme temperature, radiation, and long-term reliability is mandatory.

FAQ

What is the exact logic function implemented by the JM38510/07903BFA?

The JM38510/07903BFA implements four independent 2-input multiplexers, each selecting between two data inputs (A_n and B_n) based on a common select line (S) and enabling/disabling all outputs via an active-low output enable (G̅). Each multiplexer produces both true (Y_n) and complemented (Y̅_n) outputs. This functionality is identical to the industry-standard SN54LS157 logic diagram and truth table, confirmed in TI's military logic datasheets.

Does the JM38510/07903BFA support 3.3 V operation?

No, the JM38510/07903BFA is strictly a 5 V TTL device with V_CC specified at 5 V ± 5%. It does not support 3.3 V operation, and applying 3.3 V to V_CC will result in non-compliant logic thresholds, reduced noise margin, and potential functional failure. The device must be used in 5 V systems with appropriate level translation if interfacing with 3.3 V logic.

Is the JM38510/07903BFA pin-compatible with commercial SN74LS157 variants?

No - the JM38510/07903BFA uses a 16-pin CFP (W) package with different pin assignments than the 16-pin SOIC (D) or PDIP (N) packages of SN74LS157. While logic function and electrical behavior match, physical layout, thermal characteristics, and soldering requirements differ significantly. Direct PCB replacement is not possible without redesign.

What qualification standard applies to the JM38510/07903BFA?

The JM38510/07903BFA is qualified to MIL-PRF-38535 Class B under QML certification, which mandates rigorous process controls, lot traceability, extended environmental testing (-55°C to +125°C), and failure analysis reporting. This qualification is documented in TI's QML listing and applies specifically to the JM38510/07903BFA part number, not generic "LS157" variants.

Can the JM38510/07903BFA be used without external decoupling capacitors?

No - TI's application guidance requires a minimum 0.1 µF ceramic capacitor placed as close as possible to the V_CC and GND pins of the JM38510/07903BFA. Omitting this capacitor risks power rail instability, increased propagation delay variation, and susceptibility to switching noise - especially critical in high-density military PCB layouts where simultaneous switching noise is prevalent.

JM38510/07903BFA 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:: -

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JM38510/07903BFA FAQ

1.How can I place an order for JM38510/07903BFA through Aetrix?

Please submit a Request for Quotation (RFQ) for JM38510/07903BFA 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 JM38510/07903BFA reliable?

The price and inventory of JM38510/07903BFA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/07903BFA is usually 5 days.

3.What payment methods are accepted for JM38510/07903BFA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JM38510/07903BFA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for JM38510/07903BFA?

JM38510/07903BFA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your JM38510/07903BFA 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 JM38510/07903BFA?

For technical support, including JM38510/07903BFA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/07903BFA requirements.

6.How does Aetrix verify that JM38510/07903BFA is sourced from the original manufacturer or authorized distributors?

All JM38510/07903BFA 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 JM38510/07903BFA meets industry standards.

7.What is the process for return or replacement of JM38510/07903BFA?

All JM38510/07903BFA units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/07903BFA, 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 JM38510/07903BFA part is unused and in its original packaging.

Return procedure for JM38510/07903BFA:

1.Submit a request within 90 days.

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

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