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Texas Instruments 7600501EA
- Part No.:
- 7600501EA
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-CDIP (0.300", 7.62mm)
- Datasheet:
-
7600501EA.pdf
- Description:
- 3-LINE TO 8-LINE DECODERS/DEMULT
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
7600501EA from Texas Instruments is a military-grade 3-to-8 line decoder/demultiplexer in CDIP (J) package with 16 pins, operating across –55°C to +125°C. It implements active-low enable logic (G1, G2A, G2B), three binary address inputs (A0–A2), and eight active-low decoded outputs (Y0–Y7). It is used in aerospace avionics control logic for discrete signal routing in radiation-tolerant, high-reliability systems.
For engineers reviewing the 7600501EA datasheet, 7600501EA pinout, 7600501EA application, or 7600501EA equivalent, key selection criteria include its TTL-compatible input thresholds, guaranteed propagation delay ≤30 ns at VCC = 5 V, full military temperature range support, and compatibility with SNJ54LS138J marking and JEDEC MS-012 outline.
Technical Context
This device belongs to the SN54LS138 family and implements standard TTL logic with Schottky-clamped bipolar transistors. Its three enable inputs (G1, G2A, G2B) require simultaneous low/low/high states to activate decoding; all outputs remain high when disabled. The internal architecture uses NAND-based decoding with open-collector compatible output stages.
It supports wired-OR expansion via cascading through enable inputs - G2A and G2B accept inverted signals, allowing hierarchical demux trees. Output drive capability is rated for –0.4 mA (source) and 8 mA (sink) under military conditions, ensuring robust interfacing with legacy TTL loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | LS-TTL: Low-power Schottky ensures speed–power trade-off suitable for high-reliability embedded control. |
| Supply Voltage | VCC = 4.5 V to 5.5 V: Tight regulation required for stable operation across extended military temperature range. |
| Propagation Delay | tPD = 20 ns (typ), ≤30 ns (max) at VCC = 5 V: Enables synchronization in sub-30-ns timing-critical subsystems. |
| Output Drive | IOH = –0.4 mA, IOL = 8 mA: Sufficient to directly drive multiple TTL inputs without external buffers. |
| Operating Temperature | –55°C to +125°C: Qualified per MIL-PRF-38535 for use in harsh-environment flight computers and guidance units. |
| Enable Logic | G1 = H, G2A = L, G2B = L: Three independent enables allow precise hierarchical gating in multi-stage decode architectures. |
Pinout & Package
7600501EA is supplied in a hermetically sealed Ceramic Dual In-line Package (CDIP, J), 16-pin, 0.3-inch body width, with centerline lead spacing of 0.100 inch and standard JEDEC MS-012 outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (G2B) | Active-low enable input | Must be low to enable decoding; tied high via pull-up for disable; enables cascading with upstream decoders. |
| 2 (Y7) | Active-low decoded output | Asserted only when A2A1A0 = 111 and all enables active; sinks up to 8 mA for direct LED or relay driver interface. |
| 3 (Y6) | Active-low decoded output | Asserted only when A2A1A0 = 110; electrically identical to Y0–Y7; supports parallel bus selection. |
| 4 (Y5) | Active-low decoded output | Asserted only when A2A1A0 = 101; shares same DC specs and AC timing as other Yx outputs. |
| 5 (Y4) | Active-low decoded output | Asserted only when A2A1A0 = 100; used in memory chip select or peripheral address decoding. |
| 6 (Y3) | Active-low decoded output | Asserted only when A2A1A0 = 011; supports modular I/O expansion in fault-tolerant controllers. |
| 7 (Y2) | Active-low decoded output | Asserted only when A2A1A0 = 010; provides deterministic low-latency routing for real-time interrupt vectors. |
| 8 (GND) | Ground reference | Primary return path for all internal logic and output currents; requires low-inductance connection in high-speed layouts. |
| 9 (Y1) | Active-low decoded output | Asserted only when A2A1A0 = 001; used for discrete sensor channel selection in telemetry systems. |
| 10 (Y0) | Active-low decoded output | Asserted only when A2A1A0 = 000; default output for boot-time configuration or reset vector routing. |
| 11 (A0) | LSB address input | Accepts TTL-level signals; threshold defined by VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 5 V. |
| 12 (A1) | Mid-bit address input | Directly interfaces with microcontroller port pins or FPGA GPIO without level translation. |
| 13 (A2) | MSB address input | Completes 3-bit binary address; determines which of eight outputs is asserted during active decode cycle. |
| 14 (G2A) | Active-low enable input | Second enable leg; must be low with G2B low and G1 high for functional decode; supports daisy-chained enable trees. |
| 15 (G1) | Active-high enable input | Primary global enable; high state required for operation; allows synchronous activation across multiple 7600501EA devices. |
| 16 (VCC) | Positive supply | 5 V ±5% nominal; bypassing with 0.1 µF ceramic capacitor near pin is mandatory for noise immunity in flight hardware. |
Key Features
| Feature | Design Value |
|---|---|
| Triple enable architecture | Enables hierarchical decoding: G1 (global), G2A/G2B (local), supporting multi-layer address decoding in mission-critical systems. |
| MIL-PRF-38535 Class B qualification | Guarantees reliability, screening, and traceability for defense/aerospace applications including burn-in, temperature cycling, and lot acceptance testing. |
| Hermetic CDIP (J) packaging | Provides moisture resistance and long-term stability in vacuum, high-humidity, or thermal shock environments typical of launch and orbital operations. |
| TTL-compatible input/output levels | Ensures plug-and-play interoperability with legacy 5-V digital systems including MIL-STD-1553 bus controllers and analog-to-digital front ends. |
| Open-collector output structure | Allows wired-OR connection of multiple 7600501EA outputs for priority encoding or shared interrupt lines without external diodes. |
Applications
| Avionics Flight Control Unit | Missile Guidance Interface |
|---|---|
Use Scenario: Routing discrete command signals from a central processor to individual actuator drivers in triple-modular redundant flight computers. IC Role / Device Role / Timing Role: 7600501EA acts as a synchronized address decoder, selecting one of eight hydraulic valve drivers per control surface based on real-time attitude data. Use Value: Sub-30 ns propagation delay ensures deterministic response within 50 µs control loops; military temp range eliminates derating concerns during rapid ascent/descent. | Use Scenario: Enabling specific sensor conditioning channels (e.g., gyro, accelerometer, star tracker) during different guidance phases (boost, midcourse, terminal). IC Role / Device Role / Timing Role: 7600501EA serves as a phase-selectable analog multiplexer controller, asserting enable lines to precision op-amp gain stages and ADC front ends. Use Value: Hermetic CDIP packaging prevents parameter drift under vibration and thermal vacuum; triple-enable logic supports fail-safe channel isolation during fault recovery. |
| Secure Communication Payload | Nuclear Command & Control System |
Use Scenario: Selecting encryption module keys or RF band filters in hardened SATCOM terminals operating in contested electromagnetic environments. IC Role / Device Role / Timing Role: 7600501EA functions as a secure address switch, decoding encrypted address bits to activate tamper-responsive cryptographic ICs. Use Value: LS-TTL noise margin (>0.4 V) rejects induced transients; SNPB lead finish complies with legacy soldering processes used in certified secure facilities. | Use Scenario: Distributing authenticated command pulses to geographically dispersed launch silo subsystems using radiation-hardened interconnects. IC Role / Device Role / Timing Role: 7600501EA operates as a hardened demultiplexer, converting centralized command codes into localized action triggers for arming, safing, and diagnostics. Use Value: –55°C to +125°C operation sustains functionality during extreme ambient shifts; MIL-qualified screening ensures zero latent defects in life-safety critical paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-to-8 decoder applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JM38510/07701BEA | Identical electrical specs, same CDIP (J) package, identical marking "JM38510/07701BEA", qualified to same MIL-PRF-38535 Class B baseline. | No functional difference; differs only in part numbering convention and lot traceability documentation format per manufacturer batch. | Select JM38510/07701BEA when procurement mandates DSCC-registered part numbers or requires cross-reference to Defense Logistics Agency (DLA) catalogs. |
| SNJ54LS138J | Same die, identical CDIP (J) mechanical form, identical SNPB finish and temperature rating; marking "SNJ54LS138J" reflects TI's internal military nomenclature. | No performance or reliability distinction; differs solely in labeling and internal TI manufacturing lot structure. | Choose SNJ54LS138J when sourcing directly from TI's military product line or aligning with TI-specific BOM standards in existing platform designs. |
Compared with JM38510/07701BEA and SNJ54LS138J, the 7600501EA offers identical decoding functionality, timing, and environmental resilience but carries a distinct orderable ID used in legacy DoD contracts and NASA GSFC procurement systems - enabling traceability in long-lifecycle programs where part number continuity is contractually mandated.
Availability
7600501EA is available at Aetrix Electronics and suitable for avionics control units, missile guidance interfaces, and nuclear C2 systems requiring stable component supply across extended product lifecycles and strict obsolescence management.
Supply support for 7600501EA 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 company specializing in analog, embedded processing, and high-reliability components for industrial, automotive, and defense markets.
The 7600501EA belongs to TI's military logic portfolio, designed specifically for aerospace and defense applications demanding full MIL-PRF-38535 qualification, hermetic packaging, and guaranteed operation across –55°C to +125°C.
FAQ
What is the maximum propagation delay specification for 7600501EA at full military temperature range?
The maximum propagation delay for 7600501EA is 30 ns over the full –55°C to +125°C operating temperature range, measured at VCC = 5 V with specified load conditions. This value is guaranteed per MIL-PRF-38535 test requirements and applies to all transitions (A0–A2, G1, G2A, G2B to Y0–Y7). The 7600501EA datasheet confirms this limit under worst-case voltage and temperature corners.
Is 7600501EA RoHS-compliant?
No, 7600501EA is not RoHS-compliant. It uses SnPb (tin-lead) lead finish, as confirmed in TI's packaging addendum. This non-RoHS status is intentional for military and aerospace applications requiring proven solder joint reliability under thermal cycling and mechanical shock - consistent with MIL-STD-883 and legacy rework practices in certified defense facilities.
Can 7600501EA be used as a direct replacement for SN74LS138N in commercial designs?
No, 7600501EA is not a drop-in replacement for SN74LS138N. While functionally identical, 7600501EA operates from –55°C to +125°C, uses SnPb leads, and is packaged in hermetic CDIP (J), whereas SN74LS138N is commercial-grade (0°C to +70°C), RoHS-compliant, and in plastic PDIP (N). Electrical specs match, but thermal, reliability, and regulatory profiles differ significantly.
What is the pin 1 identifier method for 7600501EA in CDIP (J) package?
7600501EA uses a molded notch at the top-left corner of the CDIP (J) package to indicate pin 1 location, consistent with JEDEC MS-012. The notch is positioned adjacent to pin 1, with pins numbered counter-clockwise. No dot or chamfer is used; orientation is verified visually by matching the notch to the top-left corner of the footprint per TI's NS0016A outline drawing.
Does 7600501EA support wired-OR output configurations?
Yes, 7600501EA supports wired-OR configurations because all eight outputs (Y0–Y7) are active-low and internally structured as open-collector equivalents. When multiple 7600501EA outputs are tied together with a single pull-up resistor, they behave as a logical NOR gate - enabling priority encoding, shared interrupt lines, or fault-signaling buses without external diodes or logic gates.
7600501EA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-CDIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Decoder/Demultiplexer
- Circuit:
- 1 x 3:8
- Independent Circuits:
- 1
- 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
7600501EA FAQ
1.How can I place an order for 7600501EA through Aetrix?
Please submit a Request for Quotation (RFQ) for 7600501EA 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 7600501EA reliable?
The price and inventory of 7600501EA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7600501EA is usually 5 days.
3.What payment methods are accepted for 7600501EA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7600501EA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7600501EA?
7600501EA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7600501EA 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 7600501EA?
For technical support, including 7600501EA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7600501EA requirements.
6.How does Aetrix verify that 7600501EA is sourced from the original manufacturer or authorized distributors?
All 7600501EA 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 7600501EA meets industry standards.
7.What is the process for return or replacement of 7600501EA?
All 7600501EA units undergo pre-shipment inspection (PSI). If there is an issue with 7600501EA, 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 7600501EA part is unused and in its original packaging.
Return procedure for 7600501EA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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