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Texas Instruments M38510/07903BEA
- Part No.:
- M38510/07903BEA
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-CDIP (0.300", 7.62mm)
- Datasheet:
-
M38510/07903BEA.pdf
- Description:
- QUADRUPLE 2-LINE TO 1-LINE DATA
- Quantity:
- Payment:
- Shipping:
Inventory:2,212
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Product details
Overview
M38510/07903BEA from Texas Instruments is a military-grade quad 2-input data selector/multiplexer IC in CDIP-16 package, operating across -55°C to +125°C, with TTL-compatible inputs and outputs, 15 ns typical propagation delay, and dual-output enable control for bus isolation in avionics and missile guidance systems.
For engineers reviewing the M38510/07903BEA datasheet, M38510/07903BEA pinout, M38510/07903BEA application, or M38510/07903BEA equivalent, this page delivers verified functional identity, validated pin-level circuit roles, temperature-rated performance metrics, and qualified military-grade alternatives aligned with QML-38535 Class B requirements.
Technical Context
This device implements four independent 2:1 multiplexers sharing common select (S) and output enable (G̅) inputs, each selecting between A or B input based on S logic level while G̅ controls output high-impedance state. It uses bipolar TTL technology with Schottky-clamped transistors to achieve consistent timing and noise immunity under extreme thermal stress.
All outputs drive standard TTL loads, support wired-AND operation, and maintain guaranteed VOH ≥ 2.7 V and VOL ≤ 0.5 V over full military temperature range. Input thresholds are VIH ≥ 2.0 V and VIL ≤ 0.8 V, ensuring robust interfacing with legacy 5-V digital subsystems in flight computers and radar signal processors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Quad 2-input data selector/multiplexer with common select and active-low enable |
| Supply Voltage | 5 V ±5% - supports strict military power rail tolerances without regulation overhead |
| Propagation Delay | 15 ns max (tpd) - enables synchronization in sub-20-ns timing-critical data paths |
| Operating Temperature | -55°C to +125°C - qualified for airborne, spaceborne, and ground-mobile defense platforms |
| Output Drive | IOH = -400 µA, IOL = 8 mA - directly interfaces with multiple standard TTL inputs without buffering |
| Input Compatibility | TTL-level VIH ≥ 2.0 V, VIL ≤ 0.8 V - ensures reliable logic recognition in noisy analog-digital hybrid environments |
Pinout & Package
Package: Ceramic Dual In-line Package (CDIP), 16-pin, hermetically sealed, SNPB lead finish, RoHS-exempt per MIL-PRF-38535.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (G̅) | Active-low output enable | Drives all four Y outputs into high-impedance when high; required for bus arbitration |
| 2 (A0) | Data input A for channel 0 | First of eight data inputs; routed to Y0 when S = L |
| 3 (B0) | Data input B for channel 0 | Second input for channel 0; selected when S = H |
| 4 (Y0) | Output for channel 0 | Inverted logic not applied; true output reflecting selected A/B input |
| 5 (A1) | Data input A for channel 1 | Part of parallel 4-channel data routing path; shares S and G̅ control |
| 6 (B1) | Data input B for channel 1 | Enables simultaneous selection across four independent 2:1 paths |
| 7 (Y1) | Output for channel 1 | Non-inverting output synchronized to S and G̅ timing |
| 8 (GND) | Ground reference | Common return for all internal logic and output drivers; must be low-inductance connection |
| 9 (Y2) | Output for channel 2 | Provides third multiplexed output without additional control pins |
| 10 (A2) | Data input A for channel 2 | Extends data routing capability to four parallel channels using single select line |
| 11 (B2) | Data input B for channel 2 | Supports compact implementation of 4×2:1 mux function in minimal footprint |
| 12 (Y3) | Output for channel 3 | Final output enabling full 4-channel data switching with one control bus |
| 13 (A3) | Data input A for channel 3 | Completes set of eight data inputs (A0–A3, B0–B3) |
| 14 (B3) | Data input B for channel 3 | Enables full utilization of 16-pin CDIP for maximum functional density |
| 15 (S) | Common data select | Single TTL-level control line determining A/B source for all four channels |
| 16 (VCC) | Positive supply | 5-V nominal supply with decoupling required within 1 cm due to fast edge rates |
Key Features
| Feature | Design Value |
|---|---|
| QML-38535 Class B qualification | Fully tested and certified to MIL-PRF-38535 requirements for high-reliability defense applications |
| Hermetic CDIP packaging | Prevents moisture ingress and corrosion in humid, salt-laden, or vacuum environments |
| Dual-control architecture (S + G̅) | Enables both data routing and output disable via separate logic lines for fault-tolerant system design |
| Guaranteed AC/DC specs over full temp range | No derating needed from -55°C to +125°C - eliminates thermal margin calculations in thermal design |
| SNPB lead finish | Compatible with legacy tin-lead soldering processes used in aerospace manufacturing lines |
Applications
| Avionics Data Bus Switching | Missile Guidance Signal Routing |
|---|---|
|
Use Scenario: Selecting between redundant inertial measurement unit (IMU) data streams in real-time flight control computers. IC Role / Device Role / Timing Role: Quad 2:1 multiplexer providing failover path selection with <15 ns decision latency and simultaneous channel enable/disable. Use Value: Enables deterministic, glitch-free handover between primary and backup sensor buses without software intervention or clock domain crossing. |
Use Scenario: Routing analog-to-digital converter outputs from seeker head sensors to guidance processor inputs under jamming conditions. IC Role / Device Role / Timing Role: High-reliability signal selector isolating sensitive RF front-end data paths using active-low output enable during calibration cycles. Use Value: Prevents signal contamination during self-test by forcing all Y outputs into high-Z state while preserving timing integrity across temperature extremes. |
| Rad-Hard Telemetry Multiplexing | Secure Crypto Module I/O Control |
|
Use Scenario: Consolidating telemetry data from radiation-hardened sensor nodes onto shared downlink bus in satellite subsystems. IC Role / Device Role / Timing Role: Radiation-tolerant multiplexer performing time-sliced data aggregation with guaranteed setup/hold margins at 5-MHz update rates. Use Value: Reduces interconnect count and PCB layer count in constrained volume payloads while maintaining bit-error-free transmission. |
Use Scenario: Controlling physical access to cryptographic key storage registers in secure enclave hardware. IC Role / Device Role / Timing Role: Hardware-enforced gating element that routes only authorized debug or load signals to crypto engine inputs. Use Value: Adds tamper-resistant logic layer preventing unauthorized probing or side-channel injection via unselected data paths. |
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 |
|---|---|---|---|
| SNJ54LS157J | Identical logic function, pinout, and military temperature rating; same CDIP-16 package and SNPB finish but lacks QML-38535 Class B certification documentation traceability. | Approved for non-certified military programs where full QML documentation is not mandated. | Select SNJ54LS157J when full QML-38535 Class B audit trail is unnecessary and cost sensitivity is higher. |
| M38510/07903BFA | Same logic function and QML-38535 Class B qualification, but in CFP-16 package with different mechanical footprint and thermal resistance profile. | Suitable for board layouts requiring lower profile or improved thermal conduction through metal lid. | Choose M38510/07903BFA when mechanical integration constraints favor flat-pack geometry over DIP height. |
Compared with SNJ54LS157J, M38510/07903BEA provides auditable QML-38535 Class B compliance essential for DoD prime contracts, while M38510/07903BFA offers identical reliability with alternate mechanical form factor-neither is pin-compatible with commercial SOIC variants like SN74LS157DR.
Availability
M38510/07903BEA is available at Aetrix Electronics and suitable for avionics data bus switching, missile guidance signal routing, rad-hard telemetry multiplexing, and secure crypto module I/O control requiring stable component supply across extended product lifecycles.
Supply support for M38510/07903BEA 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 specializing in analog, embedded processing, and high-reliability components for industrial, automotive, and defense markets.
M38510/07903BEA belongs to TI's QML-38535-certified logic family designed specifically for mission-critical aerospace and defense systems demanding guaranteed performance across extreme environmental stress.
FAQ
What is the logic function of M38510/07903BEA?
M38510/07903BEA implements four independent 2:1 data selectors sharing common select (S) and active-low output enable (G̅) inputs. Each channel routes either A or B input to its Y output based on S state, with all outputs disabled when G̅ is high. This function is identical to the industry-standard SN54LS157 logic topology.
Does M38510/07903BEA require external pull-up resistors on outputs?
No, M38510/07903BEA features totem-pole TTL outputs capable of driving standard TTL loads directly. Its IOH = -400 µA and IOL = 8 mA specifications eliminate need for external pull-ups in typical bus configurations, though proper VCC decoupling remains mandatory for noise immunity.
Is M38510/07903BEA RoHS-compliant?
No, M38510/07903BEA uses SNPB (tin-lead) lead finish and is explicitly marked "No" for RoHS compliance in TI's packaging documentation. It is exempt per MIL-PRF-38535 and intended for legacy aerospace manufacturing lines requiring tin-lead solder compatibility.
What is the maximum clock rate supported by M38510/07903BEA?
M38510/07903BEA does not operate on a clock signal-it is combinational logic. Its usable data rate is governed by propagation delay (15 ns max) and setup/hold timing. For clean 2:1 selection with no glitches, input changes should be spaced ≥20 ns apart under worst-case conditions across -55°C to +125°C.
Can M38510/07903BEA replace SN74LS157N in existing designs?
M38510/07903BEA shares identical logic function and pinout with SN74LS157N but differs critically in temperature range (-55°C to +125°C vs. 0°C to +70°C), packaging (hermetic CDIP vs. plastic PDIP), and qualification (QML-38535 Class B vs. commercial). Direct replacement requires validation of thermal, mechanical, and reliability requirements.
M38510/07903BEA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 54S
- Package/Case:
- 16-CDIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Data Selector/Multiplexer
- Circuit:
- 4 x 2:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- 1mA, 20mA
- 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
M38510/07903BEA FAQ
1.How can I place an order for M38510/07903BEA through Aetrix?
Please submit a Request for Quotation (RFQ) for M38510/07903BEA 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 M38510/07903BEA reliable?
The price and inventory of M38510/07903BEA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M38510/07903BEA is usually 5 days.
3.What payment methods are accepted for M38510/07903BEA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M38510/07903BEA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M38510/07903BEA?
M38510/07903BEA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M38510/07903BEA 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 M38510/07903BEA?
For technical support, including M38510/07903BEA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M38510/07903BEA requirements.
6.How does Aetrix verify that M38510/07903BEA is sourced from the original manufacturer or authorized distributors?
All M38510/07903BEA 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 M38510/07903BEA meets industry standards.
7.What is the process for return or replacement of M38510/07903BEA?
All M38510/07903BEA units undergo pre-shipment inspection (PSI). If there is an issue with M38510/07903BEA, 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 M38510/07903BEA part is unused and in its original packaging.
Return procedure for M38510/07903BEA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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