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Texas Instruments 5962-9686901QCA
- Part No.:
- 5962-9686901QCA
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
5962-9686901QCA.pdf
- Description:
- SN54AHCT125 QUADRUPLE BUS BUFFER
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Product details
Overview
5962-9686901QCA from Texas Instruments is a military-grade quadruple bus buffer gate with 3-state outputs, designed for high-reliability aerospace and defense systems operating from −55°C to 125°C. It features TTL-voltage-compatible inputs, ±25 mA output drive, 5 V supply operation, and latch-up immunity exceeding 250 mA per JESD 17 - enabling robust data bus isolation in avionics backplanes and radiation-tolerant control modules.
For engineers reviewing the 5962-9686901QCA datasheet, 5962-9686901QCA pinout, 5962-9686901QCA application, or 5962-9686901QCA equivalent, this device serves as a drop-in MIL-PRF-38535-compliant replacement for SNJ54AHCT125J in legacy CDIP-based flight computers, requiring no PCB layout changes and supporting deterministic 3-state bus arbitration under extreme thermal cycling.
Technical Context
The 5962-9686901QCA implements four independent noninverting buffers, each with dedicated output-enable (OE) control that places the Y output in high-impedance state when OE = HIGH. Its logic behavior follows standard positive-logic truth table: when OE = LOW, Y = A; when OE = HIGH, Y = high-Z.
It operates strictly at VCC = 4.5 V to 5.5 V, with guaranteed VOH ≥ 3.8 V (IOH = −8 mA) and VOL ≤ 0.44 V (IOL = 8 mA), and supports input transition rates up to 20 ns/V. All unused inputs must be tied to VCC or GND to prevent floating-node-induced current leakage or oscillation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with legacy 5 V TTL and CMOS logic rails in military platforms. |
| Operating Temperature | −55°C to 125°C - qualified per MIL-PRF-38535 for use in uncontrolled environmental zones of aircraft and spaceborne electronics. |
| Output Drive | ±8 mA (min) - sufficient to drive 50 pF loads with <8.5 ns propagation delay, supporting multi-drop bus timing budgets. |
| Input Compatibility | TTL-voltage compatible (VIH = 2 V, VIL = 0.8 V) - interfaces directly with legacy TTL peripherals without level-shifting. |
| Latch-Up Immunity | >250 mA per JESD 17 - prevents destructive latch-up during ESD transients or power-rail fault conditions in harsh EM environments. |
| ESD Protection | 2000-V HBM, 200-V MM, 1000-V CDM - meets MIL-STD-883 method 3015 for handling and board-level reliability. |
| Propagation Delay | tPLH/tPHL = 1 ns to 6.5 ns (CL = 15 pF) - enables sub-10 ns bus turnaround in real-time deterministic communication links. |
Pinout & Package
Ceramic Dual-In-Line Package (CDIP), 14-pin, hermetically sealed with glass-frit lid per MIL-STD-1835 and GDIP1-T14. Maximum height: 5.08 mm. Pin 1 identified by optional index mark on cap.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | Output Enable (1OE, 2OE, 3OE, 4OE) | Active-low control: HIGH forces corresponding Y output into high-impedance state; critical for bus contention avoidance. |
| 2, 5, 11, 14 | Data Input (1A, 2A, 3A, 4A) | TTL-compatible input accepting 0.8 V/2 V thresholds; must be terminated to VCC or GND if unused to prevent metastability. |
| 3, 6, 12, 9 | Buffered Output (1Y, 2Y, 3Y, 4Y) | Noninverting 3-state output capable of sourcing/sinking ±8 mA; high-Z state isolates bus segments during arbitration. |
| 7 | GND | Signal reference plane; requires low-inductance connection to system ground plane to maintain noise margin. |
| 14 | VCC | 5 V power supply; decoupling capacitor (0.1 µF ceramic) required within 10 mm of pin to suppress switching noise. |
Key Features
| Feature | Design Value |
|---|---|
| 3-State Bus Isolation | Independent OE control per channel enables selective bus segment enable/disable - essential for time-triggered ARINC-429 or MIL-STD-1553B subsystem partitioning. |
| MIL-PRF-38535 Qualification | Fully tested per QML Class V requirements including screening, burn-in, and lot acceptance testing - mandatory for DoD procurement and flight-critical hardware. |
| TTL-Compatible Inputs | Accepts standard TTL logic levels without external biasing - simplifies integration with legacy discrete logic and microcontroller GPIOs in retrofit programs. |
| High-Reliability Packaging | Hermetic CDIP construction with ceramic body and glass-sealed lid provides >10-year operational life in high-humidity, high-vibration, and radiation-prone environments. |
| Power-Up/Down High-Z Guarantee | OE tied to VCC via pullup resistor ensures outputs remain high-Z during power sequencing - prevents bus contention during cold-start or brownout recovery. |
Applications
| Avionics Data Bus Interface | Spacecraft Command & Telemetry |
|---|---|
Use Scenario: Isolating ARINC-429 transmit/receive lines between flight management computer and sensor interface units. IC Role / Device Role / Timing Role: Quad buffer provides direction-controlled bidirectional bus separation with nanosecond-level enable/disable timing. Use Value: Enables deterministic 100 kbps serial data transfer with zero bus contention across multiple LRUs sharing common backplane wiring. |
Use Scenario: Buffering telemetry packet streams from radiation-hardened FPGAs to spacecraft downlink modulators. IC Role / Device Role / Timing Role: 3-state outputs allow time-multiplexed access to shared UART TX lines while maintaining signal integrity under total ionizing dose exposure. Use Value: Guarantees error-free telemetry transmission over 10+ years in GEO orbit due to latch-up immunity and hermetic packaging. |
| Ground-Based Radar Control | Nuclear Power Plant Safety Logic |
Use Scenario: Driving parallel address/data buses between radar processor and analog front-end ADC/DAC modules. IC Role / Device Role / Timing Role: Four independent buffers isolate processor I/O from high-noise RF sections while preserving setup/hold timing margins. Use Value: Maintains <1 ns skew across all 4 channels under −55°C startup, ensuring synchronous sampling alignment in pulse-Doppler processing. |
Use Scenario: Interfacing safety PLCs with redundant sensor inputs in Class 1E nuclear instrumentation and control systems. IC Role / Device Role / Timing Role: Provides fail-safe bus gating where OE signals are derived from dual-channel watchdog circuits to force high-Z on fault detection. Use Value: Meets IEEE 382 and IEC 61513 requirements for hardware-based fault containment and safe shutdown response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SNJ54AHCT125J | Identical electrical specs and CDIP-14 package; same MIL-PRF-38535 Class V qualification but different lot traceability and marking format. | No functional difference; used interchangeably in new designs where 5962-9686901QCA is unavailable. | Select SNJ54AHCT125J only if procurement documentation requires explicit "SNJ" prefix per legacy BOMs. |
| 5962-9686901Q2A | LCCC-20 package (vs. CDIP-14); identical logic function and temperature range but different pinout, footprint, and thermal resistance (θJA ≈ N/A vs. CDIP's ~80°C/W). | Requires PCB redesign; suited for high-density, low-inductance layouts in missile guidance systems where LCCC mechanical stability is prioritized. | Choose 5962-9686901Q2A only when board space constraints or vibration tolerance demand LCCC packaging. |
Compared with SNJ54AHCT125J, 5962-9686901QCA offers identical performance but updated manufacturing traceability and test reporting per current DSCC standards; versus 5962-9686901Q2A, it delivers direct CDIP-14 drop-in capability without layout revision, making it optimal for sustainment of fielded avionics hardware.
Availability
5962-9686901QCA is available at Aetrix Electronics and suitable for avionics data bus interface, spacecraft command & telemetry, and nuclear plant safety logic requiring stable component supply across extended product lifecycles and strict obsolescence management.
Supply support for 5962-9686901QCA 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 50 years of heritage in analog, logic, and military-grade IC design, headquartered in Dallas, Texas.
The SN54AHCT family was developed specifically for high-reliability defense and aerospace applications requiring MIL-PRF-38535 qualification, wide-temperature operation, and proven radiation-tolerant logic behavior.
FAQ
What is the full military specification compliance status of the 5962-9686901QCA?
The 5962-9686901QCA is fully compliant with MIL-PRF-38535 Class V requirements, including screening, burn-in, and lot acceptance testing per QML certification. It meets all absolute maximum ratings, recommended operating conditions, and electrical characteristics specified in the SCLS264O datasheet, and is listed as ACTIVE in TI's military product addendum with full traceability to DSCC source control drawings.
Can the 5962-9686901QCA be used as a direct replacement for SNJ54AHCT125J in existing hardware?
Yes, the 5962-9686901QCA is a direct functional, electrical, and mechanical replacement for SNJ54AHCT125J. Both share identical CDIP-14 packaging, pinout, DC/AC specifications, and MIL-PRF-38535 Class V qualification. No PCB or firmware changes are required - only verification of updated lot traceability documentation per DoD contract requirements.
What is the recommended power-up sequence to ensure high-impedance outputs on the 5962-9686901QCA?
To guarantee high-impedance outputs during power-up, tie all OE pins to VCC through a pullup resistor. The minimum value is determined by the driver's current-sinking capability; a 10-kΩ resistor is typical. This ensures OE remains HIGH until system logic asserts active-LOW enable, preventing bus contention during voltage ramp-up across the −55°C to 125°C range.
Does the 5962-9686901QCA support hot-swap or live-insertion in backplane applications?
No, the 5962-9686901QCA is not rated for hot-swap operation. Its absolute maximum ratings do not include powered insertion stress, and the CDIP package lacks built-in hot-swap protection circuitry. For live-insertion systems, external current-limiting and sequencing circuitry must be implemented upstream of the 5962-9686901QCA to avoid violating VI or IO limits during insertion transients.
How does the 5962-9686901QCA handle floating inputs, and what is the recommended termination?
All unused inputs of the 5962-9686901QCA must be terminated to either VCC or GND to prevent floating nodes, which can cause excessive supply current, logic instability, or increased EMI susceptibility. TI recommends using 10-kΩ pullup or pulldown resistors - consistent with application report SCBA004 - especially in high-reliability systems where long-term parametric drift must be avoided.
5962-9686901QCA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
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5962-9686901QCA FAQ
1.How can I place an order for 5962-9686901QCA through Aetrix?
Please submit a Request for Quotation (RFQ) for 5962-9686901QCA on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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The price and inventory of 5962-9686901QCA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5962-9686901QCA is usually 5 days.
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5.How can I obtain technical support or documentation for 5962-9686901QCA?
For technical support, including 5962-9686901QCA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5962-9686901QCA requirements.
6.How does Aetrix verify that 5962-9686901QCA is sourced from the original manufacturer or authorized distributors?
All 5962-9686901QCA 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 5962-9686901QCA meets industry standards.
7.What is the process for return or replacement of 5962-9686901QCA?
All 5962-9686901QCA units undergo pre-shipment inspection (PSI). If there is an issue with 5962-9686901QCA, 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 5962-9686901QCA part is unused and in its original packaging.
Return procedure for 5962-9686901QCA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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