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Texas Instruments 84001022A
- Part No.:
- 84001022A
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-CLCC
- Datasheet:
-
84001022A.pdf
- Description:
- OCTAL D-TYPE EDGE-TRIGGERED FLIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,141
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Product details
Overview
84001022A from Texas Instruments is a military-grade octal D-type edge-triggered flip-flop with 3-state inverting outputs, designed for bus driving in high-reliability systems. It features synchronous clear (CLR), buffered control inputs, bus-structured pinout, and operates over −55°C to 125°C. It drives bidirectional data buses directly in avionics and defense computing interfaces.
For engineers reviewing the 84001022A datasheet, 84001022A pinout, 84001022A application, or 84001022A equivalent, key selection criteria include its −55°C to 125°C temperature rating, 20-pin LCCC (FK) ceramic package, 30 MHz max clock frequency, 15 ns data setup time before CLK↑, and compatibility with ALS logic family voltage thresholds (VIH = 2 V, VIL = 0.7 V).
Technical Context
This device implements eight independent D-type flip-flops with edge-triggered clocking on the low-to-high transition of CLK. Each channel includes an output-enable (OE) input that isolates outputs without affecting internal state retention or data capture timing.
The SN54ALS576B variant-identical in logic function and pinout to 84001022A-is characterized for full military temperature operation and uses TTL-compatible input thresholds and 3-state output drive capable of sinking 24 mA or sourcing −2.6 mA at VCC = 5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | ALS (Advanced Low-Power Schottky), TTL-compatible input/output levels |
| Operating Temperature | −55°C to 125°C - qualified for aerospace and defense platforms requiring extended thermal stability |
| Max Clock Frequency | 30 MHz - supports high-speed data latching in real-time bus arbitration systems |
| Data Setup Time | 15 ns before CLK↑ - defines minimum data hold window for reliable register capture |
| Output Drive | 24 mA sink / −2.6 mA source - sufficient to drive terminated 50 Ω transmission lines or multiple TTL loads |
| Package Type | LCCC (FK), 20-pin ceramic - hermetically sealed, leadless, suitable for high-vibration and radiation-tolerant PCBs |
| Supply Voltage | 4.5 V to 5.5 V - compatible with regulated 5 V military power rails; absolute max 7 V |
Pinout & Package
LCCC (FK) 20-pin leadless ceramic chip carrier, 8.89 mm × 8.89 mm body, 1.27 mm pitch, 2.03 mm max height, hermetic ceramic construction with solderable metallized terminations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE (Output Enable) | Active-low 3-state control; disables all Q outputs without affecting internal flip-flop state or clocking |
| 2–9 | 1D–8D | Data inputs for each of eight D-type flip-flops; sampled on CLK↑ |
| 10 | GND | Ground reference for logic and power return path |
| 11 | VCC | Positive supply (4.5–5.5 V); decoupling required within 10 mm of this pin |
| 12–19 | 1Q–8Q | Inverting 3-state outputs; high-impedance when OE = HIGH |
| 20 | CLK | Common clock input; edge-triggered on low-to-high transition for all eight registers |
Key Features
| Feature | Design Value |
|---|---|
| Bus-structured pinout | Minimizes trace crossovers and signal skew in dense backplane or motherboard layouts |
| Synchronous clear (CLR) | Resets all eight flip-flop outputs simultaneously on active-low CLR assertion, independent of CLK |
| Buffered control inputs | OE and CLK inputs have Schmitt-trigger-like noise immunity and reduced capacitive loading on driving gates |
| 3-state inverting outputs | Enables bidirectional bus sharing without external direction control logic or transceivers |
| Military temperature qualification | Validated operation across −55°C to 125°C ensures reliability in uncontrolled environmental enclosures |
Applications
| Avionics Data Bus Interface | Secure Military Communication Controller |
|---|---|
Use Scenario: Interfacing mission computer to ARINC 429 or MIL-STD-1553B bus transceivers with level translation and timing isolation. IC Role / Device Role / Timing Role: Octal register buffers latching command/status words synchronously to system clock while enabling/disabling bus drivers via OE. Use Value: Eliminates need for discrete gating logic; 30 MHz clock support meets deterministic latency requirements for flight control loops. | Use Scenario: Isolating cryptographic processor I/O from external peripherals in TEMPEST-compliant secure radios. IC Role / Device Role / Timing Role: Bidirectional bus driver with synchronous reset ensures deterministic startup state and prevents bus contention during key loading sequences. Use Value: Hermetic LCCC package and −55°C to 125°C rating ensure uninterrupted operation in airborne RF-intensive environments. |
| Ruggedized Industrial PLC Backplane | Tactical Vehicle Control System |
Use Scenario: Buffering sensor input registers and actuator output latches across modular I/O chassis with hot-swap capability. IC Role / Device Role / Timing Role: Acts as I/O port latch with 3-state outputs allowing dynamic bus ownership handoff between CPU and diagnostics module. Use Value: OE-controlled high-impedance mode enables safe insertion/removal without bus glitches or latch-up risk. | Use Scenario: Synchronizing distributed vehicle subsystems (engine, braking, comms) using deterministic time-triggered architecture. IC Role / Device Role / Timing Role: Edge-triggered register captures sensor fusion data at precise intervals; CLR ensures known state after power-on reset. Use Value: 15 ns setup time and 4 ns hold time guarantee timing margin under worst-case voltage/temperature conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type bus interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SNJ54ALS576BFK | Identical die, same FK package, identical −55°C to 125°C rating and pinout; TI's direct military-qualified part number | No functional difference; used interchangeably in QML-38534 certified designs | Select SNJ54ALS576BFK when formal QML certification documentation and traceability are required. |
| 8400102RA | Same SN54ALS576B functionality but in 20-pin CDIP (J) package; through-hole, non-hermetic plastic-ceramic hybrid | Lower vibration resistance and moisture ingress tolerance; unsuitable for high-G or sealed enclosure use | Choose 8400102RA only for legacy board rework where LCCC footprint is unavailable and environmental specs are relaxed. |
Compared with 84001022A, SNJ54ALS576BFK offers identical performance and qualification with full QML pedigree, while 8400102RA trades hermeticity and mechanical robustness for through-hole assembly compatibility - neither is pin-compatible with SOIC variants due to differing pin counts and package geometry.
Availability
84001022A is available at Aetrix Electronics and suitable for avionics data bus interface, secure military communication controller, and ruggedized industrial PLC backplane applications requiring stable component supply across extended temperature and long lifecycle programs.
Supply support for 84001022A 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 for industrial, automotive, and defense markets.
The SN54ALS576B product line delivers military-qualified octal D-type registers with 3-state outputs, engineered specifically for deterministic bus interfacing in harsh-environment computing systems.
FAQ
What is the operating temperature range of the 84001022A?
The 84001022A is rated for operation from −55°C to 125°C, meeting full military temperature specifications per SN54ALS576B characterization. This range is validated across all electrical parameters including setup/hold times, propagation delays, and output drive strength, making it suitable for deployment in unheated aircraft bays or desert-deployed ground systems where ambient extremes occur.
Does the 84001022A include a synchronous clear function?
Yes, the 84001022A implements synchronous clear (CLR) as defined in the SN54ALS576B logic family. The CLR input resets all eight flip-flop outputs to logic HIGH on the next active CLK↑ edge when CLR is asserted LOW, ensuring deterministic initialization without asynchronous glitches. This behavior is confirmed in the function table on page 2 of the SDAS065B datasheet.
What package type is used for the 84001022A?
The 84001022A uses a 20-pin LCCC (Leadless Ceramic Chip Carrier) package designated FK, with 8.89 mm × 8.89 mm body size, 1.27 mm pin pitch, and hermetic ceramic construction. This package is specified in TI's Package Option Addendum and matches the SNJ54ALS576BFK ordering code, supporting surface-mount assembly with high thermal and mechanical reliability.
Can the 84001022A be used as a direct replacement for SN74ALS576B in commercial designs?
No, the 84001022A is not a direct replacement for SN74ALS576B due to fundamental differences in temperature rating, qualification, and package. While both share identical logic functionality, 84001022A is SN54ALS576B-class (−55°C to 125°C, military) in FK ceramic, whereas SN74ALS576B is commercial (0°C to 70°C) and offered in SOIC/DIP packages - mixing them risks thermal derating failure or solder joint fatigue.
What is the maximum clock frequency supported by the 84001022A?
The 84001022A supports a maximum clock frequency of 30 MHz under recommended operating conditions (VCC = 4.5 V to 5.5 V, CL = 50 pF). This value is specified in the switching characteristics table (page 4, SDAS065B) for SN74ALS576B/SN74ALS577A, and applies identically to the SN54ALS576B variant embodied by 84001022A per TI's cross-reference in the Package Option Addendum.
84001022A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 54ALS
- Package/Case:
- 20-CLCC
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 22 MHz
- Max Propagation Delay @ V, Max CL:
- 24ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 1mA, 12mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 30 mA
- Input Capacitance:
- -
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-LCCC (8.89x8.89)
84001022A FAQ
1.How can I place an order for 84001022A through Aetrix?
Please submit a Request for Quotation (RFQ) for 84001022A 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 84001022A reliable?
The price and inventory of 84001022A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 84001022A is usually 5 days.
3.What payment methods are accepted for 84001022A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 84001022A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 84001022A?
84001022A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 84001022A 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 84001022A?
For technical support, including 84001022A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 84001022A requirements.
6.How does Aetrix verify that 84001022A is sourced from the original manufacturer or authorized distributors?
All 84001022A 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 84001022A meets industry standards.
7.What is the process for return or replacement of 84001022A?
All 84001022A units undergo pre-shipment inspection (PSI). If there is an issue with 84001022A, 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 84001022A part is unused and in its original packaging.
Return procedure for 84001022A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
84001022A Tags
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