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Texas Instruments 8509601EA
- Part No.:
- 8509601EA
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- -
- Datasheet:
-
8509601EA.pdf
- Description:
- SN54ALS253 DUAL 1-OF-4 DATA SELE
- Quantity:
- Payment:
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Inventory:349
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Product details
Overview
8509601EA from Texas Instruments is a dual 4-line to 1-line data selector/multiplexer with independent 3-state outputs, designed for bus-organized digital systems. It features two independent 4-input sections (1C0–1C3 and 2C0–2C3), common select lines (A/B), separate output-enable inputs (1OE/2OE), and operates over −55°C to 125°C. It performs parallel-to-serial conversion and enables multiplexing from eight data lines to one shared bus line in military-grade applications.
For engineers reviewing the 8509601EA datasheet, 8509601EA pinout, 8509601EA application, or 8509601EA equivalent, this device is critical for high-reliability signal routing in avionics, test equipment, and ruggedized control logic where temperature stability, output isolation, and deterministic propagation delay are required.
Technical Context
The 8509601EA implements two independent ALS-family 4:1 multiplexer sections sharing binary select inputs A and B, each driving a dedicated 3-state output (1Y and 2Y) with individual enable controls (1OE and 2OE). Its internal architecture includes inverters, drivers, and AND-OR gating for full binary decoding and data selection.
Each section supports high-speed switching with tPLH/tPHL ≤ 30 ns (SN54ALS253), low-output impedance (IOL = 12 mA min), and high-impedance off-state leakage (IOZL ≤ ±20 µA), enabling clean bus contention management without external pull-ups or arbitration logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - Ensures compatibility with standard 5-V TTL/ALS logic rails and noise margin compliance. |
| Operating Temperature | −55°C to 125°C - Qualified for full military temperature range, suitable for embedded systems in extreme environments. |
| Propagation Delay (tPLH/tPHL) | 5 ns to 30 ns - Guarantees sub-30 ns worst-case path timing for synchronous bus arbitration and real-time data routing. |
| Output Drive (IOL/IOH) | 12 mA / −1 mA - Sufficient sink current to drive multiple TTL loads directly; compatible with legacy bus loading requirements. |
| 3-State Leakage (IOZL/IOZH) | ±20 µA - Minimizes bus leakage during output disable, preventing unintended logic-level corruption on shared data lines. |
| Input Voltage Thresholds | VIL ≤ 0.8 V, VIH ≥ 2.0 V - Matches standard TTL input sensitivity, ensuring interoperability with 74LS/74ALS families. |
Pinout & Package
8509601EA is supplied in a 16-pin Ceramic Dual-In-Line Package (CDIP, J package), hermetically sealed for high-reliability operation in harsh environments. Pin layout matches industry-standard 300-mil DIP footprint with no internal connections at pins 3 and 12.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1C0 | Data input 0 for first multiplexer section - connects to source channel 0 of first 4:1 path. |
| 2 | 1C1 | Data input 1 for first multiplexer section - enables selection among four parallel inputs. |
| 3 | NC | No internal connection - unused pin; must remain unconnected per design specification. |
| 4 | 1C2 | Data input 2 for first multiplexer section - part of full binary-decoded 4-input set. |
| 5 | 1C3 | Data input 3 for first multiplexer section - completes first 4:1 data source group. |
| 6 | 1Y | 3-state output for first section - drives bus line only when 1OE is low; high-Z otherwise. |
| 7 | GND | Ground reference - provides return path for all internal logic and output currents. |
| 8 | 2C0 | Data input 0 for second multiplexer section - independent 4:1 path for concurrent routing. |
| 9 | 2Y | 3-state output for second section - electrically isolated from 1Y; enables dual-bus or time-multiplexed use. |
| 10 | 2C1 | Data input 1 for second section - shares select lines A/B but operates independently. |
| 11 | 2C2 | Data input 2 for second section - supports identical functionality as first section with separate I/O. |
| 12 | NC | No internal connection - unused pin; floating or grounded per PCB layout best practice. |
| 13 | 2C3 | Data input 3 for second section - completes second independent 4-input set. |
| 14 | 1OE | Output-enable for first section - active-low control; disables 1Y to high-impedance state when high. |
| 15 | 2OE | Output-enable for second section - independent enable allows selective activation of either output. |
| 16 | VCC | Positive supply - powers both sections; requires local 0.1 µF ceramic decoupling per JEDEC guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4:1 multiplexers | Enables simultaneous routing of two 4-channel data streams using shared select lines-reduces address decode logic and PCB routing complexity. |
| Individual 3-state output enables (1OE/2OE) | Allows precise bus arbitration: only one output drives the bus at a time while others float, eliminating contention without external logic. |
| Military-grade temperature qualification | Rated for −55°C to 125°C operation-validated for deployment in aerospace, defense, and industrial control systems with wide thermal excursions. |
| ALS logic family performance | Delivers 30 ns max propagation delay with 12 mA sink capability-balances speed and power efficiency better than standard TTL or LS variants. |
| Ceramic DIP (J-package) construction | Hermetic sealing and low moisture absorption ensure long-term reliability in high-humidity or vacuum environments where plastic packages degrade. |
Applications
| Avionics Data Bus Interface | Automated Test Equipment (ATE) Signal Routing |
|---|---|
|
Use Scenario: Multiplexing sensor telemetry (temperature, pressure, voltage) from multiple aircraft subsystems onto a single ARINC 429 or MIL-STD-1553B-compatible serial bus interface. IC Role / Device Role / Timing Role: Dual 4:1 selector routes discrete analog-to-digital converter outputs under microcontroller command; 3-state outputs prevent bus conflicts during channel switching. Use Value: Eliminates need for discrete logic gates or FPGA resources to manage 8:1 routing, reducing BOM count and improving timing predictability across −55°C to 125°C flight envelope. |
Use Scenario: Dynamically connecting calibration reference signals (e.g., precision voltage standards) to DUT inputs during automated functional testing sequences. IC Role / Device Role / Timing Role: Acts as programmable signal switch matrix-microcontroller selects one of four references per section, enabling multi-point calibration without relay wear-out. Use Value: Sub-30 ns propagation delay ensures nanosecond-level timing alignment between reference selection and measurement capture, critical for <10 ppm accuracy validation. |
| Ruggedized Industrial PLC I/O Expansion | Military Communications Baseband Switching |
|
Use Scenario: Aggregating status signals from 8 field-mounted sensors (limit switches, proximity detectors) into a centralized controller via shared RS-485 data line. IC Role / Device Role / Timing Role: Provides electrically isolated channel selection with independent OE control-prevents ground loop coupling and enables hot-swap-safe signal injection. Use Value: Ceramic DIP package withstands vibration and thermal cycling in factory-floor environments; 12 mA drive sustains signal integrity over 1200 m RS-485 runs. |
Use Scenario: Selecting between multiple encrypted audio/data streams in secure HF/VHF radio baseband processing modules before modulation. IC Role / Device Role / Timing Role: Routes conditioned baseband signals under cryptographic processor control; dual-section architecture supports redundant or diversity paths. Use Value: Military temperature rating and hermetic packaging meet MIL-PRF-38535 Class K requirements for deployed comms hardware operating in desert or arctic conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 4:1 multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALS253N | Plastic DIP (N package), commercial temp range (0°C to 70°C); identical logic function and pinout. | Limited to benign environments; lacks hermetic seal and extended temperature capability. | Select when cost-sensitive, non-military applications require same logic but not ruggedization. |
| SNJ54ALS253FK | Ceramic LCCC (FK package), 20-pin, −55°C to 125°C; same electrical specs but different pinout and footprint. | Requires PCB redesign; used where surface-mount or higher I/O density is needed. | Choose for space-constrained military boards needing SMT assembly and improved thermal dissipation. |
Compared with SN74ALS253N, 8509601EA delivers guaranteed operation across the full military temperature range in a through-hole ceramic package, while SNJ54ALS253FK offers surface-mount compatibility at the cost of layout redesign-making 8509601EA optimal for legacy-replacement or high-reliability through-hole designs.
Availability
8509601EA is available at Aetrix Electronics and suitable for avionics data interfaces, automated test equipment signal routing, and ruggedized industrial PLC I/O expansion requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 8509601EA 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 founded in 1930, specializing in analog, embedded processing, and high-reliability logic solutions for industrial, automotive, and defense markets.
The 8509601EA belongs to TI's military-grade ALS logic family, engineered for deterministic timing, radiation-tolerant operation, and long-term stability in mission-critical systems where failure is not an option.
FAQ
What is the operating temperature range specified for the 8509601EA?
The 8509601EA is characterized for operation from −55°C to 125°C, meeting full military temperature range requirements per SN54ALS253 specifications. This rating is validated per the absolute maximum and recommended operating conditions tables in the SDAS216A datasheet and confirmed by TI's packaging documentation for the CDIP (J) variant.
Is the 8509601EA pin-compatible with the SN74ALS253N?
Yes, the 8509601EA shares identical pinout and logic function with the SN74ALS253N, including matching pin assignments for 1C0–1C3, 1Y, 1OE, 2C0–2C3, 2Y, 2OE, VCC, and GND. However, 8509601EA uses a ceramic DIP (J) package rated for −55°C to 125°C, whereas SN74ALS253N uses plastic DIP (N) rated for 0°C to 70°C.
Does the 8509601EA support 3-state bus interfacing?
Yes, the 8509601EA features two independent 3-state outputs (1Y and 2Y), each controlled by its own active-low output-enable input (1OE and 2OE). When OE is high, the corresponding output enters high-impedance state, allowing safe connection to shared data buses without contention.
What logic family does the 8509601EA belong to, and what are its key electrical advantages?
The 8509601EA is an Advanced Low-Power Schottky (ALS) logic device. Key advantages include 30 ns maximum propagation delay, 12 mA output sink current, ±20 µA 3-state leakage, and compatibility with standard TTL input thresholds-delivering superior speed-power trade-offs versus earlier LS or standard TTL families.
Can the 8509601EA be used in place of the SN74AS253A?
No-while functionally similar as dual 4:1 multiplexers, the 8509601EA is an ALS device (SN54ALS253), whereas SN74AS253A is an Advanced Schottky (AS) variant with higher drive (48 mA IOL) and faster timing (7.5 ns max tPHL). They share pinout but differ electrically; substitution requires validation of load, speed, and power requirements in the target circuit.
8509601EA 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:
- -
8509601EA FAQ
1.How can I place an order for 8509601EA through Aetrix?
Please submit a Request for Quotation (RFQ) for 8509601EA 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 8509601EA reliable?
The price and inventory of 8509601EA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 8509601EA is usually 5 days.
3.What payment methods are accepted for 8509601EA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 8509601EA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 8509601EA?
8509601EA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 8509601EA 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 8509601EA?
For technical support, including 8509601EA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 8509601EA requirements.
6.How does Aetrix verify that 8509601EA is sourced from the original manufacturer or authorized distributors?
All 8509601EA 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 8509601EA meets industry standards.
7.What is the process for return or replacement of 8509601EA?
All 8509601EA units undergo pre-shipment inspection (PSI). If there is an issue with 8509601EA, 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 8509601EA part is unused and in its original packaging.
Return procedure for 8509601EA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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