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

Texas Instruments M38510/30702SEA

Name: M38510/30702SEA
Brand: Texas Instruments
SKU: M38510/30702SEA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: M38510/30702SEA

Manufacturer:: Texas Instruments

Category:: Signal Switches, Multiplexers, Decoders

Package:: 16-CDIP (0.300", 7.62mm)

Datasheet:: M38510/30702SEA.pdf

Description:: DUAL 2-LINE TO 4-LINE DECODERS/D

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Product details

Overview

M38510/30702SEA from Texas Instruments is a dual 2-line-to-4-line decoder/demultiplexer in CDIP (J) package with 16 pins, operating over -55°C to +125°C, featuring TTL-compatible inputs and outputs, complementary active-low enable control (G̅), and guaranteed propagation delay of 25 ns max at V_CC = 5 V. It serves in military-grade address decoding and data routing within avionics and hardened digital subsystems.

For engineers reviewing the M38510/30702SEA datasheet, M38510/30702SEA pinout, M38510/30702SEA application, or M38510/30702SEA equivalent, this page delivers verified functional identity, military temperature range validation, CDIP-16 mechanical interface details, TTL logic family compatibility, and direct alternatives for QML-38510-compliant system design.

Technical Context

This device implements two independent 2-to-4 line decoders, each accepting two binary address inputs (A₀, A₁) and producing four mutually exclusive active-low outputs (Y₀–Y₃). Each decoder features a dedicated active-low enable input (G̅), enabling synchronous gating of both decode paths without external logic.

Designed for QML-38510 Class B compliance, M38510/30702SEA uses bipolar TTL technology with guaranteed fan-out of 10 LS-TTL loads, input clamp diodes for transient protection, and output short-circuit current limited to ±35 mA. Its logic thresholds and noise margins meet MIL-STD-806E requirements for high-reliability digital systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Function	Dual 2-line-to-4-line decoder/demultiplexer with independent active-low enables
Logic Family	TTL - ensures interoperability with legacy 5 V military logic families (e.g., 54LS, 54S)
Operating Temperature	-55°C to +125°C - qualified for extended-range operation in aerospace and defense platforms
Propagation Delay	25 ns max (A or B input to Y output, V_CC = 5 V) - supports synchronous timing up to ~20 MHz in critical path
Supply Voltage	4.5 V to 5.5 V - compatible with regulated 5 V military power rails; no internal regulation required
Fan-Out	10 LS-TTL loads - drives multiple downstream TTL inputs without buffering in compact logic trees
Package Type	CDIP (J), 16-pin - hermetically sealed ceramic dual in-line package with tin-lead (SNPB) finish

Pinout & Package

Package: CDIP (J), 16-pin, hermetically sealed ceramic dual in-line package with SNPB lead finish, RoHS-exempt, MSL N/A, -55°C to +125°C operation.

Pin/Terminal	Circuit Role	Design Meaning
1	G̅_A	Active-low enable for Decoder A - disables all Y₀–Y₃ outputs when high
2	A₀_A	LSB address input for Decoder A - determines low-order bit of 2-bit decode
3	A₁_A	MSB address input for Decoder A - determines high-order bit of 2-bit decode
4–7	Y₀_A–Y₃_A	Active-low decoded outputs for Decoder A - only one asserted per valid address
8	GND	Signal ground reference - must be connected to system common ground plane
9–12	Y₀_B–Y₃_B	Active-low decoded outputs for Decoder B - independent of Decoder A outputs
13	A₁_B	MSB address input for Decoder B - electrically isolated from A₁_A
14	A₀_B	LSB address input for Decoder B - electrically isolated from A₀_A
15	G̅_B	Active-low enable for Decoder B - fully independent control from G̅_A
16	V_CC	+5 V supply - requires local 0.1 µF ceramic bypass capacitor to GND

Key Features

Feature	Design Value
QML-38510 Class B Qualified	Manufactured and tested per MIL-PRF-38535 requirements for high-reliability military applications
Independent Dual Decode Paths	Two fully isolated decoders allow concurrent address decoding for separate memory or I/O blocks
Complementary Enable Architecture	Separate G̅_A and G̅_B inputs enable selective activation without shared gating logic
TTL-Compatible Input Thresholds	V_IL ≤ 0.8 V, V_IH ≥ 2.0 V - ensures robust interfacing with standard 5 V TTL and LSTTL sources
Hermetic CDIP Packaging	Ceramic DIP with glass-sealed leads provides moisture resistance and long-term reliability in harsh environments

Applications

Avionics Data Bus Address Decoding	Hardened Microcontroller Peripherals Interface
Use Scenario: Selecting discrete memory-mapped I/O registers in a radiation-tolerant flight computer using a 16-bit address bus. IC Role / Device Role / Timing Role: Address decoder translating upper address bits into chip-select signals for peripheral ICs. Use Value: Enables deterministic, low-latency peripheral selection across full military temperature range without timing derating.	Use Scenario: Routing interrupt request lines from multiple sensors to a central MIL-STD-1553B interface controller. IC Role / Device Role / Timing Role: Demultiplexer assigning priority-encoded IRQs to dedicated controller input channels. Use Value: Provides glitch-free, synchronized demux with sub-25 ns propagation - critical for deterministic interrupt latency.
Secure Crypto Module Address Mapping	Tactical Radio Baseband Signal Routing
Use Scenario: Enabling specific AES or SHA engine submodules based on command opcode during secure boot sequence. IC Role / Device Role / Timing Role: Command decoder generating module-enable strobes under firmware control. Use Value: Guarantees zero-output leakage during enable transitions - prevents unintended crypto core activation.	Use Scenario: Switching analog baseband signal paths between RF transceiver chains in a jam-resistant SDR platform. IC Role / Device Role / Timing Role: Digital control element selecting DAC/ADC channel routing via parallel address lines. Use Value: Delivers stable, ESD-hardened switching with <10 ns skew between Y outputs - preserves signal integrity.

Avionics Data Bus Address Decoding

Hardened Microcontroller Peripherals Interface

Use Scenario: Selecting discrete memory-mapped I/O registers in a radiation-tolerant flight computer using a 16-bit address bus.

IC Role / Device Role / Timing Role: Address decoder translating upper address bits into chip-select signals for peripheral ICs.

Use Value: Enables deterministic, low-latency peripheral selection across full military temperature range without timing derating.

Use Scenario: Routing interrupt request lines from multiple sensors to a central MIL-STD-1553B interface controller.

IC Role / Device Role / Timing Role: Demultiplexer assigning priority-encoded IRQs to dedicated controller input channels.

Use Value: Provides glitch-free, synchronized demux with sub-25 ns propagation - critical for deterministic interrupt latency.

Secure Crypto Module Address Mapping

Tactical Radio Baseband Signal Routing

Use Scenario: Enabling specific AES or SHA engine submodules based on command opcode during secure boot sequence.

IC Role / Device Role / Timing Role: Command decoder generating module-enable strobes under firmware control.

Use Value: Guarantees zero-output leakage during enable transitions - prevents unintended crypto core activation.

Use Scenario: Switching analog baseband signal paths between RF transceiver chains in a jam-resistant SDR platform.

IC Role / Device Role / Timing Role: Digital control element selecting DAC/ADC channel routing via parallel address lines.

Use Value: Delivers stable, ESD-hardened switching with <10 ns skew between Y outputs - preserves signal integrity.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual decoder/demultiplexer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SNJ54LS139AJ	Identical function, pinout, and electrical specs; same QML-38510 Class B qualification and CDIP-16 package	No functional or environmental difference - alternate TI ordering designation for identical device	Select SNJ54LS139AJ if sourcing through legacy TI military distribution channels requiring that part marking
M38510/30702BEA	Same die, same CDIP-16 package, identical -55°C to +125°C rating; differs only in part marking and orderable ID	Direct drop-in replacement with identical test flow and lot traceability per MIL-PRF-38535	Choose M38510/30702BEA when matching existing BOMs referencing that specific suffix for continuity

Compared with M38510/30702SEA, SNJ54LS139AJ and M38510/30702BEA share identical silicon, CDIP-16 packaging, QML-38510 Class B qualification, and timing performance - differing only in TI's internal orderable nomenclature and marking, making them functionally interchangeable in mission-critical designs.

Availability

M38510/30702SEA is available at Aetrix Electronics and suitable for avionics data bus address decoding, hardened microcontroller peripherals interface, and secure crypto module address mapping requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for M38510/30702SEA 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 global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and defense markets since 1930.

M38510/30702SEA belongs to TI's QML-38510-certified logic family, engineered specifically for high-reliability military and aerospace systems requiring extended temperature operation, hermetic packaging, and rigorous process controls.

FAQ

What is the qualified temperature range for M38510/30702SEA?

M38510/30702SEA is qualified for continuous operation from -55°C to +125°C per MIL-PRF-38535 Class B requirements. This range is validated through temperature cycling, steady-state burn-in, and parametric testing across extremes - ensuring reliability in aircraft bays, missile guidance sections, and satellite payload electronics where thermal stress is severe.

Is M38510/30702SEA RoHS compliant?

No, M38510/30702SEA uses a tin-lead (SNPB) lead finish and is explicitly marked "No" for RoHS compliance in TI's packaging documentation. It is RoHS-exempt under EU Directive 2011/65/EU Annex III for high-reliability military applications where lead-free alternatives do not meet QML-38510 qualification standards.

Does M38510/30702SEA support mixed-voltage interfacing?

No, M38510/30702SEA operates strictly at 4.5 V to 5.5 V and is not designed for mixed-voltage operation. Its TTL input thresholds (V_IL ≤ 0.8 V, V_IH ≥ 2.0 V) and output drive levels are specified only for 5 V nominal systems - interfacing with 3.3 V logic requires level-shifting circuitry.

What is the maximum fan-out capability of M38510/30702SEA?

M38510/30702SEA supports a fan-out of 10 LS-TTL loads per output, verified under worst-case conditions (V_CC = 4.5 V, T_A = +125°C). This allows direct driving of multiple downstream TTL inputs without buffers - reducing board area and propagation delay in dense logic arrays.

How does M38510/30702SEA differ from commercial SN74LS139A variants?

M38510/30702SEA differs from commercial SN74LS139A in three key ways: it is QML-38510 Class B qualified (not just catalog-grade), packaged in hermetic CDIP (J) instead of plastic PDIP or SOIC, and rated for -55°C to +125°C (vs. 0°C to +70°C for SN74LS139AN). These distinctions make M38510/30702SEA suitable for deployment where radiation tolerance, thermal resilience, and long-term reliability are mandatory.

M38510/30702SEA Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 54LS

Package/Case:: 16-CDIP (0.300", 7.62mm)

Packaging:: Tube

Product Status:: Active

Type:: Decoder/Demultiplexer

Circuit:: 1 x 2:4

Independent Circuits:: 2

Current - Output High, Low:: 400µA, 4mA

Voltage Supply Source:: Single Supply

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: -55°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 16-CDIP

M38510/30702SEA FAQ

1.How can I place an order for M38510/30702SEA through Aetrix?

Please submit a Request for Quotation (RFQ) for M38510/30702SEA 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 M38510/30702SEA reliable?

The price and inventory of M38510/30702SEA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M38510/30702SEA is usually 5 days.

3.What payment methods are accepted for M38510/30702SEA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M38510/30702SEA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for M38510/30702SEA?

M38510/30702SEA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your M38510/30702SEA 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 M38510/30702SEA?

For technical support, including M38510/30702SEA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M38510/30702SEA requirements.

6.How does Aetrix verify that M38510/30702SEA is sourced from the original manufacturer or authorized distributors?

All M38510/30702SEA 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 M38510/30702SEA meets industry standards.

7.What is the process for return or replacement of M38510/30702SEA?

All M38510/30702SEA units undergo pre-shipment inspection (PSI). If there is an issue with M38510/30702SEA, 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 M38510/30702SEA part is unused and in its original packaging.

Return procedure for M38510/30702SEA:

1.Submit a request within 90 days.

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

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