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Texas Instruments 5962-8952501KA
- Part No.:
- 5962-8952501KA
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
5962-8952501KA.pdf
- Description:
- BUS DRIVER, AS SERIES
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Product details
Overview
5962-8952501KA from Texas Instruments is a military-grade 9-bit bus-interface D-type flip-flop with 3-state outputs, noninverting data inputs, and operation over –55°C to 125°C. It features clock-enable (CLKEN), asynchronous clear (CLR), and buffered output-enable (OE) controls, delivering ±24 mA high-level and 48 mA low-level output drive at 5 V. It is used in radiation-tolerant avionics data buses and hardened I/O port expansion.
For engineers reviewing the 5962-8952501KA datasheet, 5962-8952501KA pinout, 5962-8952501KA application, or 5962-8952501KA equivalent, key selection criteria include military temperature range compliance, CFP-24 hermetic packaging, 3-state bus-driving capability, undershoot-protection circuitry, and functional equivalence to AM29823 for legacy system refresh.
Technical Context
This device implements nine edge-triggered D-type flip-flops sharing common CLK, CLKEN, CLR, and OE controls. Clocking is synchronous with low-to-high CLK transitions when CLKEN is low; CLKEN high disables clock propagation while retaining latch state. CLR forces all Q outputs low asynchronously, independent of clock timing.
The 3-state outputs support bidirectional bus interfacing without external pull-ups or interface components. Buffered control inputs reduce DC loading on upstream logic, and undershoot-protection circuitry safeguards against negative transients on data and clock lines - critical in high-noise aerospace environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | AS (Advanced Schottky) - enables 7.5 ns minimum CLK pulse width and sub-10 ns propagation delays |
| Operating Temperature | –55°C to 125°C - qualified per MIL-PRF-38535 for space and defense platforms |
| Supply Voltage | 4.5 V to 5.5 V - supports stable operation across wide input rail variation in avionics power systems |
| Output Drive | –24 mA IOH / 48 mA IOL - sufficient to drive 50-pF loads with <13 ns tPHL, enabling direct connection to backplane traces |
| Input Thresholds | VIL = 0.8 V, VIH = 2.0 V - compatible with TTL and AS-series logic families without level translation |
| 3-State Leakage | ±50 µA IOZL/IOZH - ensures minimal bus leakage during high-impedance hold, preserving signal integrity in multiplexed architectures |
| Propagation Delay | tPLH/tPHL ≤ 9 ns (CLK to Q) - meets timing closure for 100+ MHz bus handshaking in real-time control subsystems |
Pinout & Package
5962-8952501KA is supplied in a 24-lead Ceramic Flatpack (CFP-W) package - a hermetically sealed, side-brazed ceramic package with 0.025-inch lead pitch, designed for high-reliability military and space applications. It complies with MIL-STD-1835 and JEDEC MO-058 AB outlines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8, 9 | Data Inputs (1D–9D) | Noninverting D-type inputs; sampled on CLK↑ when CLKEN = L; tolerate –1.2 V undershoot via internal clamping |
| 10 | Clear (CLR) | Asynchronous active-low reset; forces all Q outputs low regardless of CLK or CLKEN state |
| 11 | GND | Ground reference for logic and output stages; requires low-inductance connection to minimize switching noise |
| 12 | VCC | Positive supply (4.5–5.5 V); decoupling capacitor required within 0.5 inch for transient current handling |
| 13, 14, 15, 16, 17, 18, 19, 20, 21 | Outputs (1Q–9Q) | 3-state noninverting outputs; placed in high-Z when OE = H; drive bus lines directly without external termination |
| 22 | CLKEN | Active-low clock enable; disables CLK buffer when high, freezing register state without affecting OE or CLR |
| 23 | CLK | Primary clock input; triggers edge-sensitive latching on low-to-high transition; min pulse width 9.5 ns |
| 24 | OE | Active-low output enable; controls 3-state mode independently of internal register operation; no effect on Q retention |
Key Features
| Feature | Design Value |
|---|---|
| Undershoot-protection circuitry | Internal clamps limit input voltage to –1.2 V, preventing damage from ESD or transmission-line reflections in long-backplane designs |
| Power-up high-impedance state | Outputs remain in 3-state until VCC stabilizes and first valid OE assertion, eliminating bus contention during cold start |
| Buffered control inputs | CLKEN, CLR, and OE each present ≤0.5 mA DC load, reducing fanout burden on FPGA or ASIC control drivers |
| Functionally equivalent to AM29823 | Drop-in replacement for AMD's AM29823 in legacy MIL-STD-1553B and ARINC 429 interface modules without redesign |
| Hermetic CFP-24 packaging | Sealed ceramic construction with gold-plated leads ensures >10-year operational life in vacuum, humidity, and thermal cycling environments |
Applications
| Avionics Data Bus Interface | Military I/O Port Expansion |
|---|---|
|
Use Scenario: Interfacing a radiation-hardened microcontroller to a 16-bit MIL-STD-1553B remote terminal data bus with parity channel. IC Role / Device Role / Timing Role: 9-bit parallel register buffers data between processor and bus transceiver; provides synchronized sampling and 3-state isolation during arbitration cycles. Use Value: Enables full 9-bit address/data + parity path with <9 ns propagation delay and –55°C to 125°C operation - meeting DO-254 Level A timing and environmental requirements. |
Use Scenario: Expanding GPIO count on a missile guidance system FPGA using a hardened parallel I/O bank. IC Role / Device Role / Timing Role: Acts as a latch-and-drive interface between FPGA fabric and external analog monitoring circuits and actuator drivers. Use Value: Delivers 48 mA sink current per output to directly drive optocouplers and relay coils, eliminating discrete driver stages and board area. |
| Satellite Onboard Computer Memory Buffer | Nuclear Command & Control System Parity Handling |
|
Use Scenario: Isolating SRAM read/write paths in a fault-tolerant onboard computer with triple-modular redundancy. IC Role / Device Role / Timing Role: Provides bidirectional 9-bit data path buffering with OE-controlled directionality and CLKEN-gated write enable. Use Value: Supports simultaneous read and write strobes with <10 ns skew across all 9 bits, ensuring atomic memory access under single-event upset conditions. |
Use Scenario: Generating and checking odd/even parity across 9-bit command words in a secure nuclear C2 subsystem. IC Role / Device Role / Timing Role: Latches parity bits alongside data bits; CLR resets parity state before each new command frame. Use Value: Integrates parity storage into same timing domain as data - eliminating inter-chip skew and enabling cycle-accurate error detection in real-time command validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 9-bit bus-interface flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 5962-8952501LA | Same die, CDIP-JT (24-pin ceramic DIP) package instead of CFP-W; identical electrical specs and temp range | Preferred for through-hole prototyping or legacy board rework where socket compatibility is required | Select 5962-8952501LA only if JT footprint and manual assembly are mandated; CFP-W offers superior thermal dissipation and vibration resistance |
| SNJ54AS823AJT | Same functionality and military qualification, but marked per JAN/ASN standard; identical pinout and timing | Used in DoD procurement channels requiring JAN-certified traceability and test documentation | Choose SNJ54AS823AJT when contract requires JAN-qualified labeling and 100% lot testing per MIL-STD-883 Method 5005 |
Compared with 5962-8952501KA, the 5962-8952501LA offers identical performance in a through-hole package ideal for lab validation, while SNJ54AS823AJT delivers identical functionality with JAN-standard certification for formal defense acquisition - neither is pin-compatible with plastic SOIC variants due to differing thermal and mechanical constraints.
Availability
5962-8952501KA is available at Aetrix Electronics and suitable for avionics data bus interface, military I/O port expansion, satellite onboard computer memory buffering, and nuclear command & control system parity handling requiring stable component supply across extended lifecycle programs.
Supply support for 5962-8952501KA 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 high-reliability analog and logic solutions for aerospace, defense, and industrial markets.
The SN54AS823A product line was developed to provide radiation-tolerant, high-speed bus-interface logic for MIL-STD-1553B, ARINC 429, and hardened computing subsystems requiring guaranteed operation across extreme temperature and EMI environments.
FAQ
What is the maximum clock frequency supported by the 5962-8952501KA?
The 5962-8952501KA does not specify a maximum clock frequency, but its minimum CLK pulse width is 9.5 ns (high or low), implying reliable operation up to approximately 50 MHz under recommended conditions. Propagation delay (tPLH/tPHL) is ≤9 ns, and setup/hold times (tsu/th) are 7 ns and 0 ns respectively - allowing safe use in systems with ≥20 ns clock periods. Actual max frequency depends on board layout, load capacitance, and supply stability.
Is the 5962-8952501KA RoHS compliant?
The 5962-8952501KA uses an A42 lead finish (tin-lead eutectic) and is not RoHS compliant. As a Class W CFP device qualified to MIL-PRF-38535, it follows legacy military plating standards. TI's Package Option Addendum confirms "TBD" for Eco Plan and lists "A42" under Lead/Ball Finish - indicating SnPb termination required for solderability and thermal fatigue performance in hermetic packages.
Does the 5962-8952501KA support inverting data inputs?
No, the 5962-8952501KA implements the SN54AS823A function, which has noninverting D inputs (1D–9D). The inverting variant is the SN54AS824A, designated under different part numbers (e.g., 5962-8952502KA). Pinout, timing, and control logic are identical between the two, but data inversion occurs internally only in the 824A family - confirmed by the function tables and logic diagrams in the SDAS231A datasheet.
Can the 5962-8952501KA be used with a 3.3 V system?
No, the 5962-8952501KA is specified only for 4.5 V to 5.5 V operation. Its VIH minimum is 2.0 V and VIL maximum is 0.8 V, but input thresholds and output drive levels are optimized for 5 V TTL/AS logic families. Operating below 4.5 V risks failure to meet timing specs (e.g., tsu = 7 ns) and may cause undefined output states. It is not interoperable with 3.3 V logic without level-shifting circuitry.
What is the meaning of "NRND" status for the 5962-8952501KA?
"NRND" (Not Recommended for New Designs) indicates that Texas Instruments no longer promotes the 5962-8952501KA for newly initiated projects, though it remains in production to support existing qualified programs. This status reflects long-term obsolescence planning - not immediate discontinuation. Aetrix Electronics maintains active inventory and lifecycle coordination to ensure continued supply for certified military and space programs relying on this device.
5962-8952501KA 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:
- -
5962-8952501KA FAQ
1.How can I place an order for 5962-8952501KA through Aetrix?
Please submit a Request for Quotation (RFQ) for 5962-8952501KA 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 5962-8952501KA reliable?
The price and inventory of 5962-8952501KA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5962-8952501KA is usually 5 days.
3.What payment methods are accepted for 5962-8952501KA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5962-8952501KA transactions.
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4.How is shipping managed for 5962-8952501KA?
5962-8952501KA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5962-8952501KA 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 5962-8952501KA?
For technical support, including 5962-8952501KA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5962-8952501KA requirements.
6.How does Aetrix verify that 5962-8952501KA is sourced from the original manufacturer or authorized distributors?
All 5962-8952501KA 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 5962-8952501KA meets industry standards.
7.What is the process for return or replacement of 5962-8952501KA?
All 5962-8952501KA units undergo pre-shipment inspection (PSI). If there is an issue with 5962-8952501KA, 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 5962-8952501KA part is unused and in its original packaging.
Return procedure for 5962-8952501KA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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