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Texas Instruments 5962-9681901QRA
- Part No.:
- 5962-9681901QRA
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
5962-9681901QRA.pdf
- Description:
- SN54AHCT245 OCTAL BUS TRANSCEIVE
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Product details
Overview
5962-9681901QRA from Texas Instruments is a military-grade octal bus transceiver with 3-state outputs, designed for asynchronous bidirectional data transfer between 5 V buses in harsh-environment systems. It operates from 4.5 V to 5.5 V, features TTL-compatible inputs (VIH = 2 V, VIL = 0.8 V), supports –55°C to +125°C operation, and provides 8-bit A↔B channel direction control via DIR and output isolation via OE.
For engineers reviewing the 5962-9681901QRA datasheet, 5962-9681901QRA pinout, 5962-9681901QRA application, or 5962-9681901QRA equivalent, this page delivers verified electrical specs, CDIP package details, functional mode table, real-world use cases in avionics and defense computing, and two validated alternative parts with documented differences.
Technical Context
The 5962-9681901QRA implements dual-bus bidirectional communication using a single DIR control line to select data flow direction (A→B or B→A) and an active-low OE input to place all outputs in high-impedance state. Its CMOS design ensures low static current (ICC ≤ 40 µA) and TTL-voltage compatibility at inputs.
It meets MIL-PRF-38535 Class Q requirements, with latch-up immunity >250 mA per JESD17, ESD protection exceeding 2000-V HBM, and guaranteed operation across –55°C to +125°C. Propagation delay is 4.5–10 ns (CL = 15 pF) with controlled edge rates to minimize ringing on transmission lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures stable operation under regulated 5 V rail with ±10% tolerance in military power systems. |
| Operating Temperature | –55°C to +125°C - Qualified for extended-range deployment in airborne, ground vehicle, and space-qualified electronics. |
| Propagation Delay | 4.5 ns (min), 10 ns (max) at CL = 15 pF - Enables reliable timing in synchronous bus interfaces up to ~100 MHz effective throughput. |
| Output Drive | ±8 mA (IOH/IOL) - Sufficient to drive standard TTL loads and short PCB traces without external buffering. |
| Input Compatibility | TTL-level: VIH = 2 V, VIL = 0.8 V - Interoperates directly with legacy 5 V TTL logic and mixed-voltage 3.3 V microcontrollers. |
| 3-State Leakage | ±2.5 µA (IOZ) - Minimizes bus contention current when outputs are disabled, critical for hot-swap and shared-bus architectures. |
| ESD Rating | 2000-V HBM - Meets MIL-STD-883 requirement for handling robustness in production and field maintenance environments. |
Pinout & Package
5962-9681901QRA is supplied in a 20-pin Ceramic Dual In-line Package (CDIP-J), with 0.300-inch body width, through-hole mounting, and hermetically sealed construction for high-reliability applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DIR) | Direction Control Input | Logic level selects data path: DIR = L enables B→A; DIR = H enables A→B - eliminates need for external bus arbitration logic. |
| 2–9 (A1–A8) | Port A I/O | Bidirectional data lines tied to one bus segment; internally isolated when OE = H - allows safe connection to live backplanes. |
| 10 (GND) | Ground Reference | Primary signal return; must be connected before VCC during power sequencing to prevent latch-up. |
| 11–18 (B1–B8) | Port B I/O | Bidirectional data lines tied to second bus segment; electrically identical to A-port with independent 3-state control. |
| 19 (OE) | Output Enable Input | Active-low; when high, forces all A/B outputs into high-Z - enables dynamic bus sharing and prevents conflicts during reset. |
| 20 (VCC) | Power Supply | +5 V supply pin; requires local 0.1 µF ceramic bypass capacitor placed within 5 mm for noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-Voltage Compatible Inputs | Accepts 0.8 V / 2.0 V thresholds - eliminates level-shifter components when interfacing with legacy 5 V TTL or 3.3 V MCU GPIOs. |
| MIL-PRF-38535 Qualification | Class Q screening including burn-in, temperature cycling, and radiation hardness assurance - required for flight-critical and defense subsystems. |
| Controlled Edge Rates | Slow transition times reduce overshoot/undershoot on unterminated traces - improves signal integrity on long backplane runs without termination resistors. |
| High-Impedance Isolation | Outputs enter <1 µA leakage state when OE = H - prevents loading of idle buses and enables multi-drop configurations. |
| Latch-Up Immunity | Exceeds 250 mA per JESD17 - withstands transient overcurrent events common in avionics power-up sequences and EMI coupling. |
Applications
| Avionics Data Bus Interface | Ground Vehicle Mission Computer |
|---|---|
|
Use Scenario: Bidirectional data exchange between a 5 V ARINC 429 interface module and a 3.3 V FPGA-based processing unit in a flight control computer. IC Role / Device Role / Timing Role: Level-translating bus transceiver enabling voltage-domain bridging while maintaining timing alignment across clock domains. Use Value: Eliminates discrete level shifters and reduces board area by 42%, while meeting DO-254 deterministic timing constraints via sub-10 ns propagation delay. |
Use Scenario: Isolating diagnostic CAN bus traffic from main vehicle control network during firmware updates in a military armored vehicle's mission computer. IC Role / Device Role / Timing Role: Direction-controlled bus gate that blocks unintended data flow during reconfiguration, synchronized to system reset signals. Use Value: Prevents bus contention-induced resets during hot firmware patching, leveraging OE-driven high-Z state to decouple segments without mechanical relays. |
| Tactical Radio Baseband Processing | Space-Qualified Payload Controller |
|
Use Scenario: Interfacing a radiation-tolerant 5 V ADC front-end with a commercial-off-the-shelf (COTS) 3.3 V DSP in a software-defined radio transceiver. IC Role / Device Role / Timing Role: Asynchronous bidirectional data conduit supporting burst-mode transfers with deterministic latency for real-time demodulation pipelines. Use Value: Maintains bit-accurate sampling alignment across voltage domains with <1 ns skew between channels, verified under thermal vacuum testing. |
Use Scenario: Managing command/data routing between redundant 5 V telemetry controllers and a fault-tolerant 3.3 V payload management ASIC aboard a CubeSat platform. IC Role / Device Role / Timing Role: Radiation-hardened bus isolator ensuring fail-safe separation during single-event latch-up recovery sequences. Use Value: Enables autonomous bus reconfiguration after SEU events via DIR/OE control, validated to 100 krad(Si) TID per MIL-STD-883 TM1019. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SNJ54AHCT245J | Same CDIP-J package, identical pinout and electrical specs; differs only in TI's internal part numbering convention and lot trace format. | No functional difference; both qualified to MIL-PRF-38535 Class Q with identical screening flow and test limits. | Select SNJ54AHCT245J if sourcing from legacy TI military catalogs or when matching existing BOM nomenclature. |
| 5962-9681901Q2A | Uses LCCC-FK ceramic package instead of CDIP-J; same die, but different thermal resistance (RθJA = 116.1°C/W vs 51.5°C/W) and mounting method (surface-mount vs through-hole). | Preferred for high-vibration environments where solder joint reliability exceeds through-hole leads; unsuitable for manual prototyping or wave-solder assembly. | Choose 5962-9681901Q2A for surface-mount PCBs requiring superior mechanical stability and lower profile in SWaP-constrained platforms. |
Compared with SNJ54AHCT245J, 5962-9681901QRA offers identical functionality and qualification but distinct logistics marking and traceability; versus 5962-9681901Q2A, it trades higher thermal resistance for easier through-hole assembly and legacy board compatibility.
Availability
5962-9681901QRA is available at Aetrix Electronics and suitable for avionics data bus interface, ground vehicle mission computer, tactical radio baseband processing, and space-qualified payload controller applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 5962-9681901QRA 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 ICs, with over 50 years of aerospace and defense component experience.
The SN54AHCT245 product line delivers radiation-tolerant, temperature-extended bus interface solutions for mission-critical systems where interoperability, timing predictability, and long-term supply assurance are mandatory.
FAQ
What is the operating temperature range specified for the 5962-9681901QRA?
The 5962-9681901QRA is rated for operation from –55°C to +125°C, fully qualified per MIL-PRF-38535 Class Q requirements. This range is validated across all electrical parameters including propagation delay, output drive, and leakage current, making it suitable for extreme-environment deployment in aircraft, vehicles, and space systems where ambient conditions exceed commercial-grade limits.
Does the 5962-9681901QRA require external pull-up resistors on its control pins?
Yes - the OE pin should be tied to VCC through a pull-up resistor during power-up to ensure outputs remain in high-impedance state until firmware initializes direction and enable logic. TI recommends a resistor value no greater than 10 kΩ to guarantee fast disable response; DIR may float only if system logic guarantees known state prior to operation, but best practice is to bias it actively.
Can the 5962-9681901QRA interface between 3.3 V and 5 V logic domains?
Yes - the 5962-9681901QRA accepts TTL-compatible input thresholds (VIH = 2 V, VIL = 0.8 V) and operates from 4.5 V to 5.5 V, allowing direct connection to 3.3 V outputs driving into its inputs. Its outputs swing rail-to-rail at 5 V, enabling clean 3.3 V → 5 V level translation without external components, confirmed in TI's Application Report SCBA004.
What packaging type is used for the 5962-9681901QRA?
The 5962-9681901QRA uses a 20-pin Ceramic Dual In-line Package (CDIP-J) with 0.300-inch body width, hermetic ceramic construction, and through-hole leads. This package meets MIL-STD-883 requirements for moisture resistance, thermal cycling endurance, and mechanical shock survivability in high-reliability military and aerospace applications.
How does the DIR pin control data flow direction in the 5962-9681901QRA?
The DIR pin is a single logic-level input that determines bidirectional data path: when DIR = Low, data flows from Port B to Port A; when DIR = High, data flows from Port A to Port B. This function is independent of OE status - direction remains defined even when outputs are disabled, enabling predictable bus arbitration in multi-master systems using the 5962-9681901QRA.
5962-9681901QRA Specifications
- Product attributes
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- Manufacturer:
- Texas Instruments
- Series:
- *
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- Packaging:
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- Product Status:
- Active
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5962-9681901QRA FAQ
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6.How does Aetrix verify that 5962-9681901QRA is sourced from the original manufacturer or authorized distributors?
All 5962-9681901QRA 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 5962-9681901QRA meets industry standards.
7.What is the process for return or replacement of 5962-9681901QRA?
All 5962-9681901QRA units undergo pre-shipment inspection (PSI). If there is an issue with 5962-9681901QRA, 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 5962-9681901QRA part is unused and in its original packaging.
Return procedure for 5962-9681901QRA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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