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Texas Instruments 5962-8409901VSA
- Part No.:
- 5962-8409901VSA
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- -
- Datasheet:
-
5962-8409901VSA.pdf
- Description:
- 54HC273 OCTAL D-TYPE FLIP-FLOPS
- Quantity:
- Payment:
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Product details
Overview
5962-8409901VSA from Texas Instruments is a military-grade octal D-type positive-edge-triggered flip-flop with active-low asynchronous clear, operating across –55°C to +125°C. It features 2 V to 6 V supply range, ±4 mA output drive at 5 V, typical propagation delay of 12 ns, and low ICC of 80 µA max - deployed in radiation-tolerant avionics timing and control registers.
For engineers reviewing the 5962-8409901VSA datasheet, 5962-8409901VSA pinout, 5962-8409901VSA application, or 5962-8409901VSA equivalent, key selection criteria include its CFP-20 package, MIL-PRF-38535 compliance, guaranteed operation over extended temperature, and direct-clear functionality for deterministic reset in safety-critical logic sequencing.
Technical Context
The 5962-8409901VSA implements eight independent D flip-flops sharing a common clock and global active-low CLR input. Each stage samples data on the rising edge of CLK and latches it to Q, with no internal feedback or preset capability.
Its CMOS architecture ensures rail-to-rail output swing, high noise immunity (VIH ≥ 3.15 V at VCC = 4.5 V), and sub-1-µA input leakage. Timing is characterized per JEDEC JESD78, with setup/hold times validated across full military temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Octal D-type positive-edge-triggered flip-flop with asynchronous active-low clear |
| Supply Voltage Range | 2 V to 6 V - supports mixed-voltage system interfacing and battery-backed operation |
| Propagation Delay (tpd) | Typical 12 ns at VCC = 5 V - enables reliable 21 MHz operation in synchronous control paths |
| Output Drive | ±4 mA at VCC = 4.5 V - sufficient to directly drive 10 LSTTL loads without buffering |
| Input Leakage Current | Max ±1 µA - minimizes static power and prevents unintended logic transitions on unterminated inputs |
| Operating Temperature | –55°C to +125°C - qualified per MIL-PRF-38535 for aerospace and defense embedded systems |
| Power Consumption (ICC) | Max 80 µA at VCC = 6 V - enables low-quiescent-power hold modes in standby circuits |
Pinout & Package
5962-8409901VSA uses a 20-pin Ceramic Flatpack (CFP) package with 13.09 mm × 6.92 mm body size and hermetically sealed construction for high-reliability environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | CLR | Active-low asynchronous clear - forces all Q outputs low regardless of clock or data state |
| 2 | 1Q | Output of first flip-flop - provides registered data path for bit 0 |
| 3 | 1D | Data input for first flip-flop - sampled on next CLK rising edge |
| 4 | 2D | Data input for second flip-flop - independent of other D inputs |
| 5 | 2Q | Output of second flip-flop - synchronized copy of 2D at CLK edge |
| 6 | 3Q | Output of third flip-flop - maintains state between clocks |
| 7 | 3D | Data input for third flip-flop - supports independent parallel loading |
| 8 | 4D | Data input for fourth flip-flop - enables full octal register configuration |
| 9 | 4Q | Output of fourth flip-flop - part of 8-bit storage bank |
| 10 | GND | Ground reference - must be low-impedance return for all internal switching currents |
| 11 | CLK | Clock input - rising-edge sensitive; requires monotonic transition and valid setup/hold margins |
| 12 | 5Q | Output of fifth flip-flop - extends register width to full byte |
| 13 | 5D | Data input for fifth flip-flop - matches timing behavior of all D inputs |
| 14 | 6D | Data input for sixth flip-flop - supports simultaneous 8-bit latch operation |
| 15 | 6Q | Output of sixth flip-flop - contributes to deterministic output bus timing |
| 16 | 7Q | Output of seventh flip-flop - maintains signal integrity under load |
| 17 | 7D | Data input for seventh flip-flop - electrically identical to other D pins |
| 18 | 8D | Data input for eighth flip-flop - completes octal input set |
| 19 | 8Q | Output of eighth flip-flop - final bit of registered output word |
| 20 | VCC | Positive supply - requires local 0.1 µF bypass capacitor per TI layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply voltage range (2 V–6 V) | Enables interoperability with legacy 5 V TTL, modern 3.3 V logic, and battery-powered 2.5 V subsystems |
| Direct active-low clear (CLR) | Provides immediate, clock-independent reset of all eight outputs - critical for fault recovery in flight control |
| Individual D inputs per flip-flop | Supports parallel loading of arbitrary 8-bit patterns without external multiplexing or gating |
| Low input current (≤1 µA) | Eliminates need for pull-up/pull-down resistors on unused inputs in high-density PCB layouts |
| Guaranteed operation at –55°C to +125°C | Validated per MIL-PRF-38535 screening - suitable for unheated satellite bays and engine-mounted controllers |
| CMOS output drive (±4 mA @ 5 V) | Drives standard LSTTL loads directly, reducing component count in interface logic chains |
Applications
| Avionics Data Acquisition | Mission-Critical Control Registers |
|---|---|
|
Use Scenario: Capturing sensor telemetry (e.g., inertial measurement unit outputs) at fixed intervals in real-time flight software loops. IC Role / Device Role / Timing Role: Synchronizing asynchronous analog-to-digital converter outputs into a deterministic 8-bit parallel bus aligned to system clock domain. Use Value: Prevents metastability-induced data corruption during clock domain crossing, leveraging guaranteed setup/hold margins and rail-to-rail CMOS outputs. |
Use Scenario: Holding configuration bits for radiation-hardened FPGA configuration memory or microcontroller peripheral enable states. IC Role / Device Role / Timing Role: Providing nonvolatile storage of critical control words during processor reset sequences using active-low CLR for atomic initialization. Use Value: Ensures known safe state on power-up or fault recovery, eliminating race conditions in safety-critical startup routines. |
| Satellite Command Decoding | Tactical Radio Baseband Timing |
|
Use Scenario: Latching command packets received over space-link telemetry channels before CRC validation and execution. IC Role / Device Role / Timing Role: Acting as first-stage input register for command buffers, isolating downstream logic from bursty RF receiver output jitter. Use Value: Delivers clean, glitch-free 8-bit command nibbles to decoder logic with <27 ns max tpd at 4.5 V - meeting tight latency budgets. |
Use Scenario: Generating precise timing windows for TDMA slot synchronization in secure HF/VHF radios operating in extreme thermal environments. IC Role / Device Role / Timing Role: Building programmable delay elements and state machines that maintain timing accuracy across –55°C to +125°C ambient swings. Use Value: Maintains <±10% propagation delay variation over full temperature range - enabling stable slot alignment without calibration. |
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 |
|---|---|---|---|
| SN54HC273J | Same die, CDIP-20 package; higher thermal resistance (RθJA = 70°C/W vs. CFP's 50°C/W); no hermetic seal | Limited to less demanding environmental profiles; not qualified for vacuum or high-humidity missions | Select when cost sensitivity outweighs hermeticity and thermal performance requirements |
| SNJ54HC273W | Identical CFP-20 package and MIL-PRF-38535 Class V screening; same electrical specs and marking "SNJ54HC273W" | No functional difference - dual-source option for supply chain diversification | Preferred for programs requiring multiple qualified suppliers without redesign or requalification |
Compared with SN54HC273J, 5962-8409901VSA offers superior thermal management and hermetic reliability; compared with SNJ54HC273W, it shares identical form-fit-function but differs only in orderable device ID and traceability documentation scope.
Availability
5962-8409901VSA is available at Aetrix Electronics and suitable for avionics data acquisition, mission-critical control registers, satellite command decoding, and tactical radio baseband timing requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for 5962-8409901VSA 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 logic solutions for aerospace, defense, and industrial markets.
The 5962-8409901VSA belongs to TI's military logic family designed specifically for radiation-tolerant, high-temperature, and long-lifecycle applications where failure is not an option.
FAQ
What is the maximum clock frequency supported by the 5962-8409901VSA?
The 5962-8409901VSA supports up to 21 MHz at VCC = 4.5 V and full –55°C to +125°C operating range, as specified in Section 6.10 of the SNx4HC273 datasheet. At 25°C and VCC = 4.5 V, typical fmax reaches 50 MHz, but system-level timing must be verified under worst-case voltage and temperature conditions. The 5962-8409901VSA maintains this rating due to its MIL-PRF-38535 qualification.
Does the 5962-8409901VSA require external pull-up resistors on unused inputs?
No - the 5962-8409901VSA has CMOS inputs with ≤1 µA leakage, so unused inputs may be tied directly to VCC or GND without resistors. TI recommends hard-wiring all unused inputs to prevent floating states that could cause excessive current draw or oscillation. This applies equally to CLR, D, and CLK pins not used in a given design.
How does the 5962-8409901VSA differ from commercial SN74HC273 variants?
The 5962-8409901VSA is the military-spec version of the SN74HC273, fabricated on the same silicon but screened to MIL-PRF-38535 Class V standards, packaged in hermetic CFP-20, and rated for –55°C to +125°C operation. Commercial SN74HC273 variants use plastic packages, have narrower temperature ranges (–40°C to +85°C), and lack radiation tolerance or burn-in testing required for space and defense use.
Can the 5962-8409901VSA drive LED indicators directly?
Yes - with ±4 mA output drive at 5 V, the 5962-8409901VSA can directly sink or source current for low-current LEDs (e.g., 2 mA red/green indicators). For higher-brightness or multi-LED loads, external drivers are recommended. Always verify VOL ≤ 0.33 V and VOH ≥ 3.84 V under load per Section 6.7 to ensure logic compatibility.
Is the 5962-8409901VSA pin-compatible with other SNx4HC273 variants?
Yes - the 5962-8409901VSA shares identical pinout and electrical behavior with all SNx4HC273 family members, including SN54HC273J (CDIP), SNJ54HC273W (CFP), and SN74HC273N (PDIP). All use the same 20-pin configuration with matching signal assignments, enabling drop-in replacement where package and temperature requirements align.
5962-8409901VSA 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:
- -
5962-8409901VSA FAQ
1.How can I place an order for 5962-8409901VSA through Aetrix?
Please submit a Request for Quotation (RFQ) for 5962-8409901VSA 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 5962-8409901VSA reliable?
The price and inventory of 5962-8409901VSA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5962-8409901VSA is usually 5 days.
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5962-8409901VSA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5962-8409901VSA 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 5962-8409901VSA?
For technical support, including 5962-8409901VSA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5962-8409901VSA requirements.
6.How does Aetrix verify that 5962-8409901VSA is sourced from the original manufacturer or authorized distributors?
All 5962-8409901VSA 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 5962-8409901VSA meets industry standards.
7.What is the process for return or replacement of 5962-8409901VSA?
All 5962-8409901VSA units undergo pre-shipment inspection (PSI). If there is an issue with 5962-8409901VSA, 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 5962-8409901VSA part is unused and in its original packaging.
Return procedure for 5962-8409901VSA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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