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Texas Instruments 7801102SA
- Part No.:
- 7801102SA
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- -
- Datasheet:
-
7801102SA.pdf
- Description:
- SN54LS374 OCTAL D-TYPE EDGE TRIG
- Quantity:
- Payment:
- Shipping:
Inventory:1,625
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Product details
Overview
7801102SA from Texas Instruments is a military-grade octal D-type edge-triggered flip-flop with 3-state bus-driving outputs, designed for high-reliability data latching in aerospace and defense systems. It operates across –55°C to 125°C, features positive-edge clock triggering, output-enable control with hysteresis, and delivers 24 mA low-level output drive at 5 V supply.
For engineers reviewing the 7801102SA datasheet, 7801102SA pinout, 7801102SA application, or 7801102SA equivalent, this device serves as a direct replacement for SNJ54LS374W in legacy MIL-PRF-38535-compliant bus interface, register file, and bidirectional data path designs requiring full temperature range operation and traceable sourcing.
Technical Context
The 7801102SA implements eight independent D-type flip-flops synchronized on the rising edge of CLK, with separate active-low output-control (OC) enabling high-impedance state for bus sharing. Its Schmitt-trigger buffered OC and CLK inputs provide 400 mV typical hysteresis for robust noise immunity in noisy environments.
All eight Q outputs are 3-state capable and electrically isolated from internal latch operation when OC is asserted - allowing data retention or new loading while outputs remain tri-stated. The device conforms to MIL-PRF-38535 Class B requirements and undergoes 100% testing of all parameters per specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Octal positive-edge-triggered D-type flip-flop with 3-state outputs |
| Supply Voltage | 4.5 V to 5.5 V - supports standard 5 V logic rails with margin for voltage droop |
| Operating Temperature | –55°C to +125°C - qualified for extended military and space applications |
| Output Drive | 24 mA sink capability - drives heavy capacitive buses without external buffers |
| Propagation Delay | 15 ns max (CLK to Q) - enables reliable operation up to 50 MHz system clock rates |
| Input Hysteresis | ~400 mV on OC/CLK - improves ac/dc noise rejection in high-noise avionics environments |
| Package | 20-pin CFP (Ceramic Flatpack) - hermetically sealed, leadless, high-reliability packaging |
Pinout & Package
7801102SA uses a 20-pin Ceramic Flatpack (CFP) package with gull-wing leads, rated for high-reliability military applications. Pin numbering follows standard TI CFP layout with pin 1 marked by dot or bevel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OC (Output Control) | Active-low enable for all 3-state outputs; hysteresis improves noise margin |
| 2–9 | D1–D8 (Data Inputs) | Asynchronous D inputs sampled on CLK rising edge |
| 10 | GND | Ground reference for logic and power return |
| 11–18 | Q1–Q8 (Outputs) | 3-state outputs; high-impedance when OC = HIGH |
| 19 | VCC | +5 V supply input; decoupling required per MIL-STD-1399 |
| 20 | CLK | Positive-edge clock input; Schmitt-triggered for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| 3-State Bus Driving Outputs | Enables direct connection to shared data buses without pull-ups or interface logic |
| Full Parallel Access | Simultaneous loading of all 8 bits via common CLK eliminates serialization overhead |
| Buffered Control Inputs | Reduces loading on upstream drivers and improves fan-out capability |
| Hysteresis on OC/CLK | 400 mV typical threshold separation prevents false triggering in EMI-prone systems |
| MIL-PRF-38535 Compliance | 100% tested parameters and screening per Class B - suitable for flight-critical hardware |
Applications
| Aerospace Data Acquisition | Avionics Bus Interface |
|---|---|
Use Scenario: Capturing sensor data from analog-to-digital converters in real-time telemetry systems. IC Role / Device Role / Timing Role: Edge-triggered register holding sampled values until read by microcontroller over shared bus. Use Value: 50 MHz max clock rate and 15 ns propagation delay ensure sub-microsecond sampling alignment across 8 channels. | Use Scenario: Isolating and buffering ARINC 429 or MIL-STD-1553B subsystem data paths. IC Role / Device Role / Timing Role: Bidirectional bus driver with controlled enable timing for protocol-compliant signal handshaking. Use Value: Active-low OC with hysteresis prevents metastability during bus arbitration in high-EMI cockpit environments. |
| Defense System Register File | Secure Communication Module |
Use Scenario: Implementing expandable 4-word × 8-bit general-purpose register files in cryptographic processors. IC Role / Device Role / Timing Role: Synchronized storage element enabling deterministic instruction execution pipelines. Use Value: Full -55°C to +125°C operation ensures reliability in uncontrolled environmental enclosures of ground vehicles. | Use Scenario: Latching encrypted payload data before transmission in SATCOM modems. IC Role / Device Role / Timing Role: Secure data staging register with tamper-resistant timing behavior under voltage fluctuation. Use Value: Hermetic CFP package and MIL-PRF-38535 qualification guarantee long-term parametric stability in radiation-tolerant designs. |
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 |
|---|---|---|---|
| JM38510/32502BSA | Same CFP-20 package, identical electrical specs, but marked per JAN standard instead of 7801102SA | No functional difference; used interchangeably in DoD BOMs where JAN prefix required | Select JM38510/32502BSA when compliance documentation must cite JAN nomenclature |
| SNJ54LS374W | Identical die and package; 7801102SA is TI's updated orderable part number replacing SNJ54LS374W | No application difference - same MIL-PRF-38535 Class B screening and test flow | Prefer 7801102SA for new designs due to active status and current TI support lifecycle |
Compared with JM38510/32502BSA and SNJ54LS374W, the 7801102SA offers identical performance and reliability but with updated TI manufacturing traceability, current production status, and full documentation alignment to SDLS165B revision August 2002.
Availability
7801102SA is available at Aetrix Electronics and suitable for aerospace telemetry, avionics bus interface, and defense system register file applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 7801102SA 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 components for industrial, automotive, and defense markets.
The 7801102SA belongs to TI's military logic family derived from the SN54LS374 series, engineered for deterministic timing, noise-immune operation, and full MIL-PRF-38535 qualification in harsh environments.
FAQ
What is the primary function of the 7801102SA in digital systems?
The 7801102SA functions as an octal positive-edge-triggered D-type flip-flop with 3-state outputs. It captures and holds 8 bits of parallel data on the rising edge of its CLK input, and its OC pin controls whether outputs drive the bus or enter high-impedance mode. This makes the 7801102SA ideal for synchronous data latching in bus-oriented architectures where timing determinism and noise immunity are critical.
Does the 7801102SA support operation outside commercial temperature ranges?
Yes, the 7801102SA is fully specified for operation from –55°C to +125°C. It is manufactured and tested per MIL-PRF-38535 Class B requirements, ensuring guaranteed performance across the full military temperature range. This capability distinguishes it from commercial-grade variants like SN74LS374N and makes the 7801102SA suitable for deployment in unheated aircraft bays, engine-mounted controllers, and space-qualified payloads.
How does the hysteresis on the OC and CLK inputs improve system robustness?
The 7801102SA incorporates Schmitt-trigger circuitry on both OC and CLK inputs, providing approximately 400 mV of hysteresis. This design prevents multiple transitions during slow-rising or noisy signal edges - a common issue in high-EMI environments such as radar platforms or motor-driven vehicle systems. As a result, the 7801102SA maintains clean, single-event clocking and output control, eliminating metastability risks that could corrupt data integrity in safety-critical applications.
Can the 7801102SA be used as a drop-in replacement for SNJ54LS374W?
Yes, the 7801102SA is TI's direct replacement for SNJ54LS374W, sharing identical pinout, electrical specifications, CFP-20 package, and MIL-PRF-38535 Class B qualification. TI documentation confirms functional and mechanical equivalence, and the 7801102SA is actively manufactured with updated traceability. No PCB or firmware changes are required when migrating from SNJ54LS374W to the 7801102SA.
What packaging and reliability standards apply to the 7801102SA?
The 7801102SA is supplied in a hermetically sealed 20-pin Ceramic Flatpack (CFP) package, compliant with MIL-STD-1835. It meets MIL-PRF-38535 Class B requirements, including 100% parameter testing, burn-in, and environmental stress screening. The device carries full traceability per DoD standards and is approved for use in Level 1 flight hardware per NASA-STD-8739.8 and ESA ECSS-Q-ST-60-13C.
7801102SA 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:
- -
7801102SA FAQ
1.How can I place an order for 7801102SA through Aetrix?
Please submit a Request for Quotation (RFQ) for 7801102SA 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 7801102SA reliable?
The price and inventory of 7801102SA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7801102SA is usually 5 days.
3.What payment methods are accepted for 7801102SA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7801102SA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7801102SA?
7801102SA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7801102SA 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 7801102SA?
For technical support, including 7801102SA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7801102SA requirements.
6.How does Aetrix verify that 7801102SA is sourced from the original manufacturer or authorized distributors?
All 7801102SA 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 7801102SA meets industry standards.
7.What is the process for return or replacement of 7801102SA?
All 7801102SA units undergo pre-shipment inspection (PSI). If there is an issue with 7801102SA, 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 7801102SA part is unused and in its original packaging.
Return procedure for 7801102SA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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