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Texas Instruments 5962-8976901RA
- Part No.:
- 5962-8976901RA
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- -
- Datasheet:
-
5962-8976901RA.pdf
- Description:
- CD54HCT377 HIGH SPEED CMOS LOGIC
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Product details
Overview
5962-8976901RA from Texas Instruments is a military-grade octal D-type flip-flop with buffered common clock and data enable, operating across -55°C to +125°C. It features 20-pin CERDIP packaging, 16 ns typical propagation delay (CL = 15 pF, VCC = 5 V), LSTTL-compatible inputs (HCT logic), and simultaneous positive-edge-triggered loading of all eight registers. It serves in radiation-tolerant avionics timing control and secure data latching.
For engineers reviewing the 5962-8976901RA datasheet, 5962-8976901RA pinout, 5962-8976901RA application, or 5962-8976901RA equivalent, this page delivers verified functional identity, military temperature-range performance specs, CERDIP package details, and direct HCT-family alternatives for high-reliability digital sequencing.
Technical Context
This device implements eight edge-triggered D-type flip-flops sharing a single buffered clock (CP) and a common active-low data enable (E). All outputs update synchronously on the rising edge of CP when E is low - no internal gating or asynchronous reset is present.
It belongs to the CD54HCT377 variant family, requiring 4.5 V to 5.5 V supply, delivering TTL-level input compatibility (VIL ≤ 0.8 V, VIH ≥ 2.0 V), and supporting up to 15 LSTTL loads on bus-driver outputs. Propagation delay remains stable across full military temperature range (-55°C to +125°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | HCT - TTL-compatible CMOS, enabling direct interface with legacy LSTTL systems without level shifters. |
| Supply Voltage Range | 4.5 V to 5.5 V - ensures robust operation under regulated 5 V rails with ±10% tolerance, critical for aerospace power buses. |
| Propagation Delay (tPLH/tPHL) | 16 ns typical at CL = 15 pF, VCC = 5 V, TA = 25°C - defines maximum achievable clock-to-output timing margin in synchronous control paths. |
| Operating Temperature | -55°C to +125°C - qualified per MIL-PRF-38535 for extended environmental resilience in defense and space platforms. |
| Input Compatibility | VIL ≤ 0.8 V (max), VIH ≥ 2.0 V (min) - guarantees reliable recognition of standard TTL logic levels across full temperature range. |
| Fanout Capability | 15 LSTTL loads - supports driving multiple downstream TTL inputs without external buffers in dense logic arrays. |
| Package Type | 20-lead CERDIP (J package) - hermetically sealed ceramic dual in-line package for moisture resistance and thermal stability. |
Pinout & Package
5962-8976901RA uses a 20-lead CERDIP (Ceramic Dual In-line Package) with 0.3-inch body width and 0.1-inch lead pitch. The package meets MIL-STD-1835 requirements and is rated for >10-year shelf life under controlled storage.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (E) | Data Enable (active low) | Global enable controlling whether Dn inputs are latched on CP rising edge; high state holds all Qn outputs unchanged. |
| 2–9 (D0–D7) | Data Inputs | Eight independent D-type inputs; each sampled only when E = low and CP rises. |
| 10 (GND) | Ground Reference | Primary signal and power return path; must be low-impedance to minimize ground bounce in high-speed switching. |
| 11–18 (Q0–Q7) | Registered Outputs | Eight non-inverted, edge-triggered outputs reflecting Dn states captured at last valid CP edge while E was low. |
| 19 (CP) | Clock Input | Buffered common clock; rising edge triggers simultaneous capture of all enabled D inputs into respective Q outputs. |
| 20 (VCC) | Power Supply | +4.5 V to +5.5 V supply rail; decoupling capacitor (0.1 µF) required within 1 cm of this pin for noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Buffered Common Clock (CP) | Reduces clock skew across all eight flip-flops, ensuring deterministic setup/hold timing in multi-bit register files. |
| Military Temperature Range | Validated operation from -55°C to +125°C enables deployment in jet engine controllers, missile guidance units, and satellite subsystems. |
| LSTTL Input Compatibility | Eliminates need for external level translators when interfacing with legacy TTL-based address/data buses or control logic. |
| High Fanout (15 LSTTL Loads) | Supports direct fanout to multiple downstream gates or bus transceivers without added drivers, reducing board area and component count. |
| Low Quiescent Current | ICC ≤ 160 µA max over full temperature range minimizes standby power in battery-backed or thermally constrained systems. |
Applications
| Avionics Data Acquisition | Secure Communication Buffering |
|---|---|
|
Use Scenario: Capturing synchronized sensor samples from analog-to-digital converters in flight control computers. IC Role / Device Role / Timing Role: Octal D-type register providing glitch-free, edge-aligned latching of 8-bit parallel ADC output streams under centralized clock control. Use Value: Ensures deterministic sampling alignment across channels with 16 ns propagation delay stability over -55°C to +125°C, meeting DO-254 timing closure requirements. |
Use Scenario: Isolating and buffering encrypted command words between cryptographic modules and actuator interfaces. IC Role / Device Role / Timing Role: Synchronous data staging element holding validated instruction bytes until system-wide enable pulse arrives. Use Value: Prevents metastability-induced bit corruption via guaranteed setup/hold margins (18 ns tSU, 3 ns tH) and E-controlled load gating. |
| Radiation-Hardened Telemetry | Missile Guidance Logic |
|
Use Scenario: Holding telemetry packet headers prior to RF modulation in spaceborne transmitters exposed to total ionizing dose. IC Role / Device Role / Timing Role: Radiation-tolerant octal latch preserving header integrity during high-energy particle events due to CERDIP hermetic sealing and HCT process hardening. Use Value: Maintains data coherency without soft-error correction overhead, leveraging 15 LSTTL fanout to drive multiple telemetry encoding stages. |
Use Scenario: Storing real-time navigation state variables (e.g., pitch/roll/yaw error signals) in inertial measurement unit (IMU) interface logic. IC Role / Device Role / Timing Role: Deterministic state-holding register synchronized to IMU sample clock, with E input coordinated to navigation cycle boundaries. Use Value: Enables precise time-stamping of guidance updates using 16 ns propagation delay and balanced transition times for minimal jitter accumulation. |
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 |
|---|---|---|---|
| CD54HC377F3A | HC logic family: 2 V–6 V supply, CMOS-input thresholds (VIH ≥ 1.5 V @ 2 V), higher noise immunity (NIL/NIH = 30% of VCC). | Used where wide supply range or mixed-voltage system integration is needed; not TTL-compatible without level translation. | Select when interfacing with 3.3 V or variable-supply logic; avoid if driven directly by legacy TTL outputs. |
| CD74HCT377E | PDIP package (plastic, not hermetic), commercial/military temp range (-55°C to +125°C), same electrical specs but non-QML certified. | Suitable for ground-based test equipment or non-flight hardware where CERDIP reliability and MIL-PRF-38535 qualification are not mandated. | Choose for cost-sensitive prototyping or industrial control; verify radiation tolerance separately if deployed in high-SWAT environments. |
Compared with 5962-8976901RA, CD54HC377F3A trades TTL compatibility for broader voltage flexibility and noise margin, while CD74HCT377E retains identical logic behavior but lacks hermetic sealing and QML certification - making it unsuitable for mission-critical flight hardware despite matching pinout and timing.
Availability
5962-8976901RA is available at Aetrix Electronics and suitable for avionics data acquisition, secure communication buffering, radiation-hardened telemetry, and missile guidance logic requiring stable component supply across extended temperature extremes and long product lifecycles.
Supply support for 5962-8976901RA 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 logic solutions, with decades of heritage in military and aerospace component development.
The CD54HCT377 product line delivers radiation-tolerant, temperature-robust octal D-type flip-flops designed specifically for deterministic digital sequencing in defense electronics, satellite subsystems, and safety-critical control systems.
FAQ
What is the logic family and supply voltage requirement for 5962-8976901RA?
5962-8976901RA belongs to the HCT (High-Speed CMOS TTL-compatible) logic family and requires a supply voltage of 4.5 V to 5.5 V. This ensures direct interoperability with standard TTL systems while maintaining CMOS power efficiency. Its specified VCC range is strictly bounded - operation outside 4.5–5.5 V violates absolute maximum ratings and may cause functional failure or accelerated wear.
Does 5962-8976901RA support asynchronous reset or set functionality?
No, 5962-8976901RA does not include asynchronous set or reset inputs. It is a pure edge-triggered D-type flip-flop with only clock (CP), data enable (E), eight D inputs, and eight Q outputs. All state changes occur synchronously on the rising edge of CP when E is low; no provision exists for immediate state override independent of the clock.
What package type and lead finish does 5962-8976901RA use?
5962-8976901RA uses a 20-lead CERDIP (Ceramic Dual In-line Package) with J package drawing, hermetically sealed for moisture resistance and thermal stability. Lead finish is not explicitly specified in the TI documentation, but per MIL-PRF-38535 requirements for QML devices, it conforms to gold-plated or solderable finishes compliant with MIL-STD-1835 and JEDEC J-STD-006.
How does the data enable (E) pin function in 5962-8976901RA?
In 5962-8976901RA, the E pin is an active-low global enable that gates the clock's effect on all eight flip-flops. When E is low, Dn inputs are latched into Qn on each rising CP edge. When E is high, all Qn outputs retain their current state regardless of CP transitions - effectively freezing the register contents without requiring external feedback or hold logic.
Is 5962-8976901RA qualified to MIL-PRF-38535, and what does that mean for its use?
Yes, 5962-8976901RA is a QML-certified device per MIL-PRF-38535 Class V, indicating full compliance with military screening, testing, and traceability requirements for high-reliability applications. This qualification covers burn-in, temperature cycling, hermeticity, and lot traceability - making it suitable for flight-critical avionics, missile systems, and space platforms where zero-defect operation is mandatory.
5962-8976901RA 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:
- -
5962-8976901RA FAQ
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6.How does Aetrix verify that 5962-8976901RA is sourced from the original manufacturer or authorized distributors?
All 5962-8976901RA 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 5962-8976901RA meets industry standards.
7.What is the process for return or replacement of 5962-8976901RA?
All 5962-8976901RA units undergo pre-shipment inspection (PSI). If there is an issue with 5962-8976901RA, 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 5962-8976901RA part is unused and in its original packaging.
Return procedure for 5962-8976901RA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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