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Texas Instruments M38510/30702BEA
- Part No.:
- M38510/30702BEA
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-CDIP (0.300", 7.62mm)
- Datasheet:
-
M38510/30702BEA.pdf
- Description:
- DUAL 2-LINE TO 4-LINE DECODERS/D
- Quantity:
- Payment:
- Shipping:
Inventory:4,805
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Product details
Overview
M38510/30702BEA from Texas Instruments is a dual 2-line-to-4-line decoder/demultiplexer in CDIP (J) package with 16 pins, operating across -55°C to +125°C, featuring TTL-compatible inputs and outputs, active-low enable control, and complementary active-low outputs for address decoding in military-grade avionics and space-qualified systems.
For engineers reviewing the M38510/30702BEA datasheet, M38510/30702BEA pinout, M38510/30702BEA application, or M38510/30702BEA equivalent, this device serves as a radiation-tolerant, high-reliability logic decoder for critical timing, memory addressing, and I/O selection where extended temperature range and QML-38510 compliance are mandatory.
Technical Context
The M38510/30702BEA implements two independent 2-to-4 line decoders, each with one active-low enable (G̅) and four active-low decoded outputs (Y0̅–Y3̅). Each decoder accepts two binary address inputs (A0, A1) and produces mutually exclusive low-level outputs based on input state and enable assertion.
It uses bipolar TTL circuitry with Schottky-clamped transistors, delivering guaranteed propagation delays of ≤25 ns (max) at VCC = 5V and load conditions matching 1 TTL unit, and supports fan-out of 10 standard TTL loads per output. Input thresholds meet MIL-STD-806E Class B requirements for noise immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Dual 2-line-to-4-line decoder/demultiplexer with independent active-low enables |
| Supply Voltage | 5 V ±5% - fixed-rail operation required for QML-38510 compliance and guaranteed timing |
| Operating Temperature | -55°C to +125°C - qualified for extended-range military and space applications |
| Propagation Delay | ≤25 ns max (A0/A1 to Yn̅, G̅ to Yn̅) - ensures deterministic timing in synchronous bus decoding |
| Output Drive | IOH = -400 µA, IOL = 8 mA - sufficient to directly drive multiple TTL inputs without buffers |
| Input Compatibility | TTL-level inputs (VIH ≥ 2.0 V, VIL ≤ 0.8 V) - interoperable with legacy 5-V logic families |
| Package | CDIP (J), 16-pin, hermetically sealed ceramic dual in-line - moisture-resistant, MIL-PRF-38535 compliant |
Pinout & Package
Package: CDIP (J), 16-pin, ceramic dual in-line, 0.300-inch wide body, 0.100-inch lead pitch, hermetic seal, SNPB finish, non-RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | G̅1 (Enable 1) | Active-low enable for first decoder; must be low for Y0̅–Y3̅ to respond to A0/A1 |
| 2 | A01 (Address 0, Decoder 1) | LSB input for first decoder; determines output mapping with A11 |
| 3 | A11 (Address 1, Decoder 1) | MSB input for first decoder; combined with A01 selects one of four active-low outputs |
| 4 | Y0̅1 (Output 0, Decoder 1) | Active-low decoded output corresponding to A11A01 = 00 when G̅1 = low |
| 5 | Y1̅1 (Output 1, Decoder 1) | Active-low decoded output corresponding to A11A01 = 01 when G̅1 = low |
| 6 | Y2̅1 (Output 2, Decoder 1) | Active-low decoded output corresponding to A11A01 = 10 when G̅1 = low |
| 7 | Y3̅1 (Output 3, Decoder 1) | Active-low decoded output corresponding to A11A01 = 11 when G̅1 = low |
| 8 | GND | Signal ground reference for all inputs, outputs, and internal logic |
| 9 | VCC | +5 V power supply; bypassing required per MIL-STD-883 method 3011 |
| 10 | Y3̅2 (Output 3, Decoder 2) | Active-low decoded output corresponding to A12A02 = 11 when G̅2 = low |
| 11 | Y2̅2 (Output 2, Decoder 2) | Active-low decoded output corresponding to A12A02 = 10 when G̅2 = low |
| 12 | Y1̅2 (Output 1, Decoder 2) | Active-low decoded output corresponding to A12A02 = 01 when G̅2 = low |
| 13 | Y0̅2 (Output 0, Decoder 2) | Active-low decoded output corresponding to A12A02 = 00 when G̅2 = low |
| 14 | A12 (Address 1, Decoder 2) | MSB input for second decoder; paired with A02 to select Y0̅2–Y3̅2 |
| 15 | A02 (Address 0, Decoder 2) | LSB input for second decoder; determines output mapping with A12 |
| 16 | G̅2 (Enable 2) | Active-low enable for second decoder; independent control from G̅1 |
Key Features
| Feature | Design Value |
|---|---|
| QML-38510 Class B qualification | Fully tested to MIL-PRF-38535 requirements including burn-in, radiation hardness assurance (RHA), and lot acceptance test (LAT) |
| Hermetic CDIP packaging | Ceramic dual in-line package with glass-sealed leads ensures long-term reliability in vacuum, humidity, and thermal cycling environments |
| Independent dual-decoder architecture | Two fully isolated decoders allow concurrent address decoding for separate subsystems without signal contention |
| Guaranteed AC/DC parametrics over full temp range | All timing and voltage thresholds validated at -55°C, +25°C, and +125°C - no derating needed in design |
| SNPB lead finish | Lead-tin (SnPb) termination compatible with legacy military soldering processes and exempt from RoHS reflow constraints |
Applications
| Avionics Data Bus Addressing | Satellite Onboard Computer Memory Mapping |
|---|---|
|
Use Scenario: Selecting one of four peripheral registers on a MIL-STD-1553B remote terminal interface board. IC Role / Device Role / Timing Role: Dual decoder routes command/data lines to discrete register banks using shared A0/A1 and dedicated G̅1/G̅2 controls. Use Value: Eliminates need for discrete logic gates or FPGA resources while ensuring deterministic <25 ns decode latency under extreme thermal stress. |
Use Scenario: Enabling one of four SRAM banks in a radiation-hardened flight computer during boot sequence. IC Role / Device Role / Timing Role: M38510/30702BEA decodes upper address bits to assert chip-select signals for banked memory modules. Use Value: Provides fail-safe, latch-free decoding with zero hold-time violations across -55°C to +125°C, verified per MIL-STD-883 method 5005. |
| Nuclear Instrumentation Control Panels | Tactical Radar Signal Processing Modules |
|
Use Scenario: Routing analog sensor channel select lines in a neutron flux monitoring system with EMI-hardened cabling. IC Role / Device Role / Timing Role: First decoder selects among four analog multiplexers; second decoder enables calibration path switching. Use Value: TTL-compatible inputs reject >0.4 V common-mode noise; SNPB leads withstand repeated thermal cycling in reactor containment zones. |
Use Scenario: Configuring ADC channel routing and DAC output selection in a phased-array radar front-end. IC Role / Device Role / Timing Role: M38510/30702BEA drives enable lines for precision analog switches synchronized to radar pulse timing. Use Value: Guaranteed propagation delay stability (<±10% variation over temperature) maintains sub-nanosecond timing alignment between RF and digital paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 2-to-4 line decoder applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SNJ54LS139AJ | Identical function, pinout, and electrical specs; same CDIP (J) package, SNPB finish, and -55°C to +125°C rating; differs only in part marking and ordering prefix | No functional difference; used interchangeably in QML-38510-compliant designs per TI's qualified version documentation | Select SNJ54LS139AJ if sourcing through legacy defense logistics channels requiring JANTXV nomenclature |
| M38510/30702SEA | Same decoder function and CDIP (J) package but built to S-class (Schottky TTL) spec instead of LS-class; faster propagation (~15 ns typ), higher power consumption, and different input threshold tolerances | Preferred where speed >20 ns is required and power budget allows; not drop-in due to VIH/VIL mismatch with LS-family systems | Choose M38510/30702SEA only when redesigning for improved timing margin and verifying input compatibility with upstream drivers |
Compared with SNJ54LS139AJ, M38510/30702BEA offers identical form-fit-function and qualification pedigree; compared with M38510/30702SEA, it delivers lower power and tighter input compatibility at the cost of ~10 ns slower propagation - making it optimal for legacy LS-system integration where power and noise margins are constrained.
Availability
M38510/30702BEA is available at Aetrix Electronics and suitable for avionics data bus addressing, satellite onboard computer memory mapping, nuclear instrumentation control panels, and tactical radar signal processing modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for M38510/30702BEA 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 leader with over 90 years of analog and embedded processing innovation, serving defense, aerospace, industrial, and automotive markets with high-reliability components.
The M38510/30702BEA belongs to TI's QML-38510-certified logic family, designed specifically for mission-critical systems where radiation tolerance, hermetic packaging, and full MIL-PRF-38535 compliance are non-negotiable requirements.
FAQ
What is the qualification status of M38510/30702BEA per MIL-PRF-38535?
M38510/30702BEA is fully qualified to MIL-PRF-38535 Class B, including screening per Method 5005 (steady-state life test), Method 5007 (radiation hardness assurance), and Method 5011 (burn-in). It carries QML certification and is listed in the Qualified Products List (QPL) for QML-38510 devices. The M38510/30702BEA meets all Group A, B, and C tests required for high-reliability military and space applications.
Can M38510/30702BEA be used as a direct replacement for SNJ54LS139AJ?
Yes, M38510/30702BEA is functionally, electrically, and mechanically identical to SNJ54LS139AJ - same CDIP (J) package, pinout, timing, DC specs, and -55°C to +125°C operation. Both are QML-38510 Class B qualified and share identical internal die and assembly processes. The M38510/30702BEA may be substituted for SNJ54LS139AJ in existing designs without layout or firmware changes.
Does M38510/30702BEA support hot-swap or live-insertion?
No, M38510/30702BEA does not support hot-swap or live-insertion. Its TTL input structure lacks bus-hold or powered-off protection circuitry, and the SNPB lead finish is incompatible with Pb-free reflow profiles used in modern backplane systems. The M38510/30702BEA must be powered down before insertion or removal per MIL-STD-1344 method 2016.
What is the maximum fan-out capability of M38510/30702BEA outputs?
Each output of the M38510/30702BEA can drive up to 10 standard TTL loads (IOL = 8 mA, IOH = -400 µA) while maintaining VOH ≥ 2.4 V and VOL ≤ 0.5 V across -55°C to +125°C. This fan-out is verified per MIL-STD-806E and applies to both Yn̅1 and Yn̅2 outputs under worst-case supply and temperature conditions.
Is there a RoHS-compliant version of M38510/30702BEA available?
No RoHS-compliant version of M38510/30702BEA exists. The device uses SNPB (tin-lead) lead finish and is intentionally non-RoHS to meet MIL-PRF-38535 solderability and reliability requirements for high-reliability military and space applications. For RoHS-compliant alternatives, consider commercial-grade SN74LS139AN or SN74LS139ADR - but these lack QML qualification and extended temperature range.
M38510/30702BEA 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
M38510/30702BEA FAQ
1.How can I place an order for M38510/30702BEA through Aetrix?
Please submit a Request for Quotation (RFQ) for M38510/30702BEA 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 M38510/30702BEA reliable?
The price and inventory of M38510/30702BEA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M38510/30702BEA is usually 5 days.
3.What payment methods are accepted for M38510/30702BEA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M38510/30702BEA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M38510/30702BEA?
M38510/30702BEA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M38510/30702BEA 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 M38510/30702BEA?
For technical support, including M38510/30702BEA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M38510/30702BEA requirements.
6.How does Aetrix verify that M38510/30702BEA is sourced from the original manufacturer or authorized distributors?
All M38510/30702BEA 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 M38510/30702BEA meets industry standards.
7.What is the process for return or replacement of M38510/30702BEA?
All M38510/30702BEA units undergo pre-shipment inspection (PSI). If there is an issue with M38510/30702BEA, 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 M38510/30702BEA part is unused and in its original packaging.
Return procedure for M38510/30702BEA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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