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Texas Instruments 5962-87631012A
- Part No.:
- 5962-87631012A
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- -
- Datasheet:
-
5962-87631012A.pdf
- Description:
- SN54ACT374 OCTAL D-TYPE EDGE-TRI
- Quantity:
- Payment:
- Shipping:
Inventory:2,132
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Product details
Overview
5962-87631012A from Texas Instruments is a military-grade octal D-type edge-triggered flip-flop with 3-state outputs, operating from 4.5 V to 5.5 V, featuring 10 ns max propagation delay at 5 V, TTL-compatible inputs, and −55°C to +125°C operating temperature range. It serves as a bus-oriented register or I/O port in high-reliability avionics and defense systems requiring deterministic timing and bus contention control.
For engineers reviewing the 5962-87631012A datasheet, 5962-87631012A pinout, 5962-87631012A application, or 5962-87631012A equivalent, key selection criteria include its QML-38535 Class V qualification, LCCC-20 ceramic hermetic package, 3-state output drive capability (±24 mA), and guaranteed operation across full military temperature extremes without derating.
Technical Context
The 5962-87631012A implements eight independent D-type latches triggered on the positive clock edge, with synchronous data capture and asynchronous 3-state control via OE. Its internal logic retains stored data regardless of OE state, enabling non-disruptive bus arbitration.
All inputs accept voltages up to 5.5 V and are TTL-voltage compatible; outputs drive highly capacitive loads directly without external pull-ups. The device meets MIL-PRF-38535 requirements with 100% parametric testing across temperature for critical parameters including tPLH, tPHL, tPZH, and VOL/VOH under load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - Ensures stable operation across military power rail tolerances. |
| Max Propagation Delay | 10 ns at 5 V - Enables reliable 70 MHz clock operation in synchronous bus interfaces. |
| Output Drive | ±24 mA - Sufficient to drive 50-pF bus loads with <11.5 ns output enable/disable times. |
| Operating Temperature | −55°C to +125°C - Fully specified for extended-range operation in airborne and space-qualified platforms. |
| Input Compatibility | TTL-voltage compatible - Interfaces directly with legacy 5-V TTL logic without level-shifting. |
| Package Type | LCCC-20 (FK) - Ceramic hermetic package with leadless construction for high-reliability, low-outgassing applications. |
| Qualification Standard | MIL-PRF-38535 Class V - QML-certified with 100% screening for defense and aerospace use. |
Pinout & Package
LCCC-20 (FK) package: 20-terminal, leadless ceramic chip carrier with J-lead geometry, hermetically sealed, suitable for high-vacuum and radiation-tolerant environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Data Inputs (D1–D8) | Asynchronous parallel data inputs synchronized to CLK↑; TTL-compatible voltage thresholds. |
| 9 | GND | Ground reference for all internal logic and output drivers. |
| 10, 11, 12, 13, 14, 15, 16, 17 | Q Outputs (Q1–Q8) | 3-state buffered outputs; high-impedance when OE = H, actively driven otherwise. |
| 18 | VCC | Positive supply rail; decoupling required per MIL-STD-1399 for transient immunity. |
| 19 | CLK | Positive-edge clock input; triggers simultaneous latching of all eight D inputs. |
| 20 | OE | Active-low output enable; controls 3-state mode independently of clock or data state. |
Key Features
| Feature | Design Value |
|---|---|
| 3-State Output Control | OE input places outputs in high-Z without affecting internal latch state-enables hot-swap bus arbitration. |
| High-Drive Capability | ±24 mA output current supports direct connection to 50-pF transmission lines without external buffers. |
| Input Voltage Tolerance | Accepts inputs up to 5.5 V-allows interfacing with overvoltage-tolerant peripherals or mismatched supply domains. |
| Guaranteed Timing | 10 ns max tpd, 1.5 ns min th, and 5 ns min tsu fully characterized across −55°C to +125°C. |
| Hermetic Packaging | LCCC-20 ceramic body with glass-sealed leads ensures zero moisture ingress and long-term reliability in harsh environments. |
Applications
| Avionics Data Bus Interface | Rad-Hard Telemetry Buffer |
|---|---|
Use Scenario: Interfacing flight computer registers to ARINC 429 or MIL-STD-1553B bus transceivers with precise timing alignment. IC Role / Device Role / Timing Role: Octal register synchronizing parallel sensor data before serial conversion; provides glitch-free bus isolation during OE-controlled tri-state transitions. Use Value: Eliminates need for discrete bus buffers and pull-up networks while maintaining signal integrity across wide temperature swings. | Use Scenario: Buffering telemetry packet payloads in satellite command & data handling (C&DH) subsystems exposed to total ionizing dose >100 krad(Si). IC Role / Device Role / Timing Role: Radiation-tolerant I/O port holding telemetry frames prior to downlink; retains state during single-event upsets due to latch hardening. Use Value: Meets MIL-PRF-38535 Class V screening requirements and operates reliably after 100 krad(Si) TID exposure. |
| Tactical Radio Baseband Register | Secure Crypto Module I/O Port |
Use Scenario: Storing encrypted audio frame headers in software-defined radios deployed in ground-mobile platforms. IC Role / Device Role / Timing Role: Edge-triggered storage element capturing header bits from FPGA fabric; OE enables dynamic reconfiguration of shared memory-mapped I/O space. Use Value: Supports real-time header swapping without bus contention, leveraging 11.5 ns tPZH/tPHZ for sub-cycle control. | Use Scenario: Isolating cryptographic key registers from external debug interfaces in NSA-certified Type 1 encryption modules. IC Role / Device Role / Timing Role: Tamper-responsive I/O port disabling output drivers upon physical intrusion detection; retains internal state until reset. Use Value: Enables zero-delay bus isolation on security event trigger, meeting FIPS 140-2 Level 3 physical security requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SNJ54ACT374J | Same logic function and electrical specs; CDIP-20 package with through-hole leads instead of LCCC-20. | Preferred for prototyping or legacy board repair where socket compatibility is required. | Select when mechanical mounting or hand-soldering is needed; lacks hermetic seal and higher thermal resistance (θJA = N/A). |
| SNJ54ACT374W | CFP-20 flatpack variant; identical timing and drive but different thermal profile (θJA ≈ 65°C/W vs. LCCC's 75°C/W). | Suitable for conduction-cooled chassis where CFP's metal lid improves heat transfer. | Choose for improved thermal dissipation in sealed enclosures; requires different footprint and reflow profile. |
Compared with SNJ54ACT374J and SNJ54ACT374W, the 5962-87631012A offers superior hermeticity and lower outgassing for vacuum-deployed systems, while maintaining identical functional behavior and MIL-PRF-38535 Class V compliance across all three variants.
Availability
5962-87631012A is available at Aetrix Electronics and suitable for avionics data acquisition, rad-hard telemetry buffering, tactical radio baseband processing, and secure crypto module I/O requiring stable component supply under ITAR-controlled distribution.
Supply support for 5962-87631012A 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 analog, embedded processing, and high-reliability components for aerospace, defense, and industrial markets.
The SN54ACT374 product line delivers radiation-tolerant, temperature-hardened logic building blocks designed specifically for mission-critical systems where deterministic timing, bus integrity, and long-term reliability are non-negotiable.
FAQ
What is the qualification status of the 5962-87631012A?
The 5962-87631012A is qualified to MIL-PRF-38535 Class V, meaning it undergoes 100% parametric testing across −55°C to +125°C, including timing, drive strength, and DC parameters. It carries QML certification for use in defense and aerospace applications, with full traceability and lot-level documentation provided by Texas Instruments.
Does the 5962-87631012A require external pull-up resistors on the OE pin?
Yes - to ensure the outputs remain in high-impedance during power-up or power-down, OE must be tied to VCC through a pull-up resistor. The minimum value depends on the current-sinking capability of the driving source; TI recommends ≥10 kΩ for typical interface drivers, as specified in the SCAS539F datasheet section "Power-Up Considerations."
Can the 5962-87631012A interface directly with 3.3-V logic systems?
No - the 5962-87631012A operates only from 4.5 V to 5.5 V and has TTL-compatible inputs (VIH = 2.0 V min), but its outputs swing rail-to-rail between GND and VCC. Direct connection to 3.3-V CMOS inputs risks overvoltage damage; level translation or series termination is required for safe interoperability.
What is the maximum clock frequency supported by the 5962-87631012A at full temperature range?
At −55°C to +125°C, the 5962-87631012A supports a guaranteed minimum clock frequency of 70 MHz, derived from its maximum propagation delay (10 ns) and setup/hold time constraints. At 25°C, operation up to 100 MHz is characterized, but system-level timing margins must account for worst-case skew and jitter.
Is the 5962-87631012A RoHS-compliant?
No - the 5962-87631012A uses post-plated lead finish on its LCCC-20 package and is exempt from RoHS under EU Directive 2011/65/EU Annex III for military and space applications. It contains lead per MIL-PRF-38535 requirements and is not intended for commercial consumer use.
5962-87631012A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- -
- Type:
- -
- Output Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Clock Frequency:
- -
- Max Propagation Delay @ V, Max CL:
- -
- Trigger Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Current - Quiescent (Iq):
- -
- Input Capacitance:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
5962-87631012A FAQ
1.How can I place an order for 5962-87631012A through Aetrix?
Please submit a Request for Quotation (RFQ) for 5962-87631012A 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 5962-87631012A reliable?
The price and inventory of 5962-87631012A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5962-87631012A is usually 5 days.
3.What payment methods are accepted for 5962-87631012A?
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4.How is shipping managed for 5962-87631012A?
5962-87631012A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5962-87631012A 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 5962-87631012A?
For technical support, including 5962-87631012A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5962-87631012A requirements.
6.How does Aetrix verify that 5962-87631012A is sourced from the original manufacturer or authorized distributors?
All 5962-87631012A 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 5962-87631012A meets industry standards.
7.What is the process for return or replacement of 5962-87631012A?
All 5962-87631012A units undergo pre-shipment inspection (PSI). If there is an issue with 5962-87631012A, 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 5962-87631012A part is unused and in its original packaging.
Return procedure for 5962-87631012A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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