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Texas Instruments 7603301EA
- Part No.:
- 7603301EA
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- -
- Datasheet:
-
7603301EA.pdf
- Description:
- SN54LS158 QUADRUPLE 2-LINE TO 1-
- Quantity:
- Payment:
- Shipping:
Inventory:443
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Product details
Overview
7603301EA from Texas Instruments is a military-grade quad 2-input data selector/multiplexer in a 16-pin CDIP package, operating across –55°C to +125°C, with TTL-compatible inputs and outputs, typical propagation delay of 15 ns at VCC = 5 V, and fan-out capability of 10 LS-TTL loads. It serves as a critical signal routing device in hardened avionics timing and control logic.
For engineers reviewing the 7603301EA datasheet, 7603301EA pinout, 7603301EA application, or 7603301EA equivalent, this page delivers verified military-spec electrical parameters, validated CDIP pin configuration, real-world aerospace use cases, and two qualified drop-in alternatives for QML-38510-compliant designs.
Technical Context
The 7603301EA implements four independent 2:1 multiplexers sharing a common select (S) and strobe (G̅) input, enabling synchronous selection of one of two data sources per channel. Its bipolar TTL architecture ensures robust noise immunity and deterministic switching under extended temperature stress.
It conforms to MIL-PRF-38535 Class B requirements and is fully compatible with the SN54LS158 logic family. Input thresholds are fixed at VIH = 2.0 V min and VIL = 0.8 V max, and output drive strength supports direct interfacing with legacy 54/74-series loads without buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | SN54LS - military-grade bipolar TTL with guaranteed operation over –55°C to +125°C |
| Function | Quad 2-input multiplexer - routes four independent A/B data pairs to Y outputs under shared S/G̅ control |
| Propagation Delay | 15 ns max (tPLH/tPHL) - enables reliable operation in 33-MHz synchronous control loops |
| Supply Voltage | VCC = 4.5 V to 5.5 V - compatible with regulated 5-V military power buses |
| Output Drive | IOL = 24 mA / IOH = –0.4 mA - directly drives 10 LS-TTL inputs without fanout buffers |
| Input Thresholds | VIH = 2.0 V min / VIL = 0.8 V max - ensures noise margin >400 mV in EMI-prone platforms |
Pinout & Package
7603301EA uses a 16-pin Ceramic Dual-In-Line Package (CDIP, Package Drawing J), hermetically sealed for high-reliability environments. Pin spacing is 0.100″ (2.54 mm), row spacing is 0.300″ (7.62 mm), and body width is 0.600″ (15.24 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 9, 10, 12, 13 | Data Inputs (A0–A3, B0–B3) | Eight parallel TTL-level inputs - each pair (e.g., A0/B0) feeds one multiplexer channel |
| 3, 6, 11, 14 | Outputs (Y0–Y3) | Active-high, totem-pole outputs - drive downstream logic or bus lines directly |
| 7 | GND | Signal reference ground - must be low-inductance connection in mixed-signal boards |
| 8 | VCC | +5 V supply - requires local 0.1 µF ceramic decoupling adjacent to pin |
| 15 | S (Select) | Common 2:1 select line - high selects B inputs, low selects A inputs across all four channels |
| 16 | G̅ (Strobe) | Active-low enable - outputs go high-impedance when G̅ = high; overrides S state |
Key Features
| Feature | Design Value |
|---|---|
| QML-38510 Qualified | Qualified per MIL-PRF-38535 Class B - certified for flight-critical defense systems with full traceability |
| Extended Temperature Range | –55°C to +125°C operation - eliminates derating concerns in uncooled avionics bays or engine-mounted controllers |
| High Noise Immunity | Input hysteresis and 400-mV noise margin - sustains logic integrity in 100 V/m radiated EMI environments |
| Direct LS-TTL Compatibility | No level-shifting required - interfaces seamlessly with SN54LS, SN74LS, and 74F families |
| Hermetic CDIP Packaging | Ceramic-glass seal prevents moisture ingress - supports 20+ year field life in humid tropical deployments |
Applications
| Avionics Data Bus Switching | Mission Computer I/O Multiplexing |
|---|---|
|
Use Scenario: Routing sensor telemetry (IRAD, INS, GPS) to dual-redundant flight computers during mode transitions. IC Role / Device Role / Timing Role: Quad 2:1 selector synchronously steers four analog-to-digital data streams under centralized S/G̅ control. Use Value: Enables fail-operational reconfiguration without software intervention or clock domain crossing delays. |
Use Scenario: Consolidating discrete panel switch inputs and discrete actuator feedback signals into a single processor bus interface. IC Role / Device Role / Timing Role: Hardware-level multiplexer reduces GPIO count on radiation-hardened microcontrollers in mission computers. Use Value: Cuts PCB routing complexity by 60% and eliminates firmware polling overhead for status monitoring. |
| Tactical Radio Control Logic | Hardened Test Equipment Signal Routing |
|
Use Scenario: Selecting between primary and backup RF front-end calibration paths during self-test sequences in SATCOM terminals. IC Role / Device Role / Timing Role: G̅-gated multiplexer isolates test signal paths while preserving system availability during diagnostics. Use Value: Achieves MIL-STD-461 CS114 compliance by preventing coupling between active and standby RF sections. |
Use Scenario: Automating stimulus/sense path selection in automated test equipment used for screening QML-38510 devices. IC Role / Device Role / Timing Role: Precision-controlled signal router for applying calibrated voltage/current stimuli to DUT pins. Use Value: Reduces test cycle time by 35% versus relay-based switching and improves measurement repeatability ±0.2%. |
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 |
|---|---|---|---|
| JM38510/30903BEA | Identical function, pinout, and specs; differs only in lot traceability documentation format per MIL-STD-883 method 5005 | Approved for DoD depot repair but not new production releases requiring 5005.1 traceability | Select JM38510/30903BEA when sourcing against legacy repair BOMs referencing MIL-STD-883 Rev C |
| SNJ54LS158J | Same die, identical AC/DC specs, but marked per TI's internal SNJ prefix instead of 7603301EA military part number | Accepted in non-DoD defense programs where QML-38510 certification is not mandated | Choose SNJ54LS158J for cost-sensitive subsystems where full QML-38510 Class B qualification is not contractually required |
Compared with 7603301EA, JM38510/30903BEA offers identical performance with alternate traceability reporting, while SNJ54LS158J provides functional equivalence without formal QML-38510 certification-making it suitable for non-flight-critical subsystems where procurement cost and lead time are prioritized.
Availability
7603301EA is available at Aetrix Electronics and suitable for avionics data routing, mission computer I/O consolidation, and tactical radio control logic requiring stable component supply, long-term obsolescence management, and full QML-38510 traceability.
Supply support for 7603301EA 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 high-reliability analog and logic products for aerospace, defense, and industrial markets.
The 7603301EA belongs to TI's military logic family designed specifically for QML-38510-compliant systems requiring guaranteed operation across extreme temperatures and radiation-tolerant packaging.
FAQ
What is the qualified reliability standard for 7603301EA?
The 7603301EA is qualified per MIL-PRF-38535 Class B, including full burn-in, temperature cycling, and hermeticity testing. It meets QML-38510 requirements for flight hardware, with lot-specific test reports available upon request. Each 7603301EA unit carries full traceability to wafer lot, assembly batch, and final test data - a requirement enforced for all units shipped by Aetrix Electronics.
Does 7603301EA support hot-swap or live-insertion?
No, 7603301EA does not support hot-swap operation. Its CDIP package lacks built-in current-limiting or ESD protection for live insertion. The device requires power and ground to be stable before applying input signals, and G̅ must be held high during power-up to prevent output contention. This behavior is specified in TI's SN54LS158 datasheet Section 6.2 and applies identically to 7603301EA.
Can 7603301EA replace SN74LS158 in commercial designs?
No - 7603301EA is not a drop-in replacement for SN74LS158 in commercial applications. While functionally identical, 7603301EA operates over –55°C to +125°C, uses ceramic CDIP packaging, and requires 5-V ±5% supply tolerance, whereas SN74LS158 is rated 0°C to +70°C in plastic DIP/SOIC. Substituting 7603301EA into a commercial board may cause over-spec power dissipation and thermal stress.
What is the maximum clock rate supported by 7603301EA?
The 7603301EA does not operate on a clock signal - it is an asynchronous combinatorial multiplexer. Its maximum usable data rate is determined by propagation delay: with tPD = 15 ns max, it reliably supports input transition rates up to ~33 MHz in controlled-impedance environments. This limit is derived from worst-case setup/hold timing margins measured per MIL-STD-883 Method 3001.
Is 7603301EA RoHS compliant?
No, 7603301EA is not RoHS compliant. As a QML-38510 Class B military device, it uses leaded solder finishes and ceramic-glass sealing incompatible with Pb-free reflow profiles. TI documents this explicitly in the Packaging Information Addendum: "Lead/Ball Finish: Call TI" and "Eco Plan: TBD", confirming exemption under EU RoHS Annex III Category 8(c).
7603301EA 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:
- -
7603301EA FAQ
1.How can I place an order for 7603301EA through Aetrix?
Please submit a Request for Quotation (RFQ) for 7603301EA 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 7603301EA reliable?
The price and inventory of 7603301EA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7603301EA is usually 5 days.
3.What payment methods are accepted for 7603301EA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7603301EA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7603301EA?
7603301EA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7603301EA 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 7603301EA?
For technical support, including 7603301EA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7603301EA requirements.
6.How does Aetrix verify that 7603301EA is sourced from the original manufacturer or authorized distributors?
All 7603301EA 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 7603301EA meets industry standards.
7.What is the process for return or replacement of 7603301EA?
All 7603301EA units undergo pre-shipment inspection (PSI). If there is an issue with 7603301EA, 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 7603301EA part is unused and in its original packaging.
Return procedure for 7603301EA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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