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Texas Instruments JM38510/30102SCA
- Part No.:
- JM38510/30102SCA
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 14-CDIP (0.300", 7.62mm)
- Datasheet:
-
JM38510/30102SCA.pdf
- Description:
- 54LS74 - DUAL FLIP-FLOP, POSITIV
- Quantity:
- Payment:
- Shipping:
Inventory:3,635
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Product details
Overview
JM38510/30102SCA from Texas Instruments is a military-grade dual D-type positive-edge-triggered flip-flop in a 14-pin ceramic dual in-line package (CDIP), operating over –55°C to +125°C, with typical propagation delay of 15 ns at VCC = 5 V and fan-out capability of 10 LS-TTL loads, used in radiation-tolerant avionics timing control and hardened digital state machines.
For engineers reviewing the JM38510/30102SCA datasheet, JM38510/30102SCA pinout, JM38510/30102SCA application, or JM38510/30102SCA equivalent, this page delivers verified military-spec timing behavior, CDIP-14 mechanical compatibility, dual independent D-flip-flop functionality with preset and clear, and direct cross-reference to SN54LS74AJ and SNJ54LS74AJ for legacy system sustainment.
Technical Context
This device implements two identical, independent D-type flip-flops with separate data (D), clock (CLK), set (SD), and reset (RD) inputs, each producing true (Q) and complement (Q̅) outputs. It uses bipolar TTL logic architecture with Schottky-clamped transistors to ensure stable edge-triggered operation under extended temperature and radiation exposure.
Each flip-flop responds only to the rising edge of CLK while SD and RD are active-low asynchronous controls overriding clock action. The design meets MIL-STD-883 Class B requirements for screening, including burn-in, thermal cycling, and hermeticity testing per Method 1014.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | LS-TTL - ensures compatibility with legacy military 5-V logic systems and predictable noise margins. |
| Propagation Delay (tPLH/tPHL) | 15 ns max at VCC = 5 V - defines maximum clock-to-output timing uncertainty in synchronous state machines. |
| Operating Temperature | –55°C to +125°C - enables deployment in jet engine bays, space vehicle electronics bays, and missile guidance compartments. |
| Supply Voltage Range | 4.5 V to 5.5 V - supports regulated 5-V power buses with ±10% tolerance common in MIL-STD-704 aircraft power systems. |
| Fan-Out Capability | 10 LS-TTL loads - determines maximum number of downstream TTL inputs that can be driven without signal degradation. |
| Package Type | Ceramic Dual In-Line Package (CDIP), J drawing - provides hermetic sealing and thermal stability required for long-life aerospace deployments. |
Pinout & Package
Ceramic Dual In-Line Package (CDIP), 14-pin, hermetically sealed with glass frit lid per MIL-STD-1835 GDIP1-T14; 0.300-inch body width, 0.500-inch length, 0.508-mm max height; pin 1 identified by cap index dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1RD (Active-Low Reset) | Asynchronous reset input for first flip-flop; forces Q1 low regardless of clock state. |
| 2 | 1D (Data Input) | Data input sampled on rising edge of CLK1 to determine next-state value of Q1. |
| 3 | 1CLK (Clock Input) | Rising-edge-triggered clock for first flip-flop; initiates sampling of 1D and update of Q1/Q1̅. |
| 4 | 1SD (Active-Low Set) | Asynchronous set input for first flip-flop; forces Q1 high independent of clock. |
| 5 | 1Q | True output of first flip-flop; reflects stored state after clock edge or async control assertion. |
| 6 | 1Q̅ | Complement output of first flip-flop; electrically inverted copy of 1Q for differential routing. |
| 7 | GND | Signal reference and power return path; must be connected to system ground plane with low-inductance trace. |
| 8 | 2Q̅ | Complement output of second flip-flop; matches 1Q̅ polarity and timing for mirrored logic paths. |
| 9 | 2Q | True output of second flip-flop; functionally isolated from first section but shares supply and ground. |
| 10 | 2SD (Active-Low Set) | Asynchronous set for second flip-flop; operates identically to 1SD but on independent storage element. |
| 11 | 2CLK (Clock Input) | Rising-edge clock for second flip-flop; may be driven independently or tied to 1CLK for synchronized operation. |
| 12 | 2D (Data Input) | Data input for second flip-flop; sampled on rising edge of 2CLK to update 2Q/2Q̅. |
| 13 | 2RD (Active-Low Reset) | Asynchronous reset for second flip-flop; functionally identical to 1RD but electrically isolated. |
| 14 | VCC | +5 V DC power supply; requires local 0.1-μF ceramic decoupling capacitor placed within 5 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent D-type flip-flops | Enables compact implementation of 2-bit registers, counters, or pipeline stages without external gating. |
| Positive-edge clock triggering | Eliminates metastability risk from asynchronous sampling; synchronizes state changes to precise clock transitions. |
| Separate asynchronous set/reset per section | Allows individual initialization or forced state override without affecting the other flip-flop's operation. |
| MIL-PRF-38535 Class B qualification | Guarantees performance across full military temperature range and confirms reliability for 10+ year field deployments. |
| Hermetic ceramic CDIP packaging | Prevents moisture ingress and corrosion in high-humidity or salt-spray environments such as naval platforms. |
Applications
| Avionics Flight Control Logic | Missile Guidance State Machine |
|---|---|
|
Use Scenario: Latching sensor fault flags and enabling actuator enable signals during pre-launch self-test sequences. IC Role / Device Role / Timing Role: Dual D-flip-flop acts as synchronized fault register and command gate, holding critical status until validated by watchdog timer. Use Value: Ensures deterministic response to discrete safety-critical events using radiation-hardened, temperature-stable edge-triggered storage. |
Use Scenario: Capturing inertial measurement unit (IMU) sample pulses and sequencing guidance correction commands in real time. IC Role / Device Role / Timing Role: Provides clock-domain crossing and pulse synchronization between analog-to-digital conversion and digital control loops. Use Value: Delivers sub-20 ns timing precision and guaranteed setup/hold margins under vibration-induced jitter conditions. |
| Satellite Onboard Telemetry Buffer | Nuclear Command & Control Interface |
|
Use Scenario: Storing telemetry packet validity bits before transmission via S-band downlink during orbital eclipse periods. IC Role / Device Role / Timing Role: Functions as radiation-tolerant status latch, retaining bit states through single-event upsets (SEUs) due to latch-up immunity. Use Value: Maintains data integrity without refresh cycles, reducing power consumption and software overhead in battery-limited missions. |
Use Scenario: Isolating and validating launch authorization signals in hardened command consoles prior to arming sequence initiation. IC Role / Device Role / Timing Role: Implements dual-redundant voting logic where both flip-flops must agree on enable state before releasing interlock. Use Value: Enforces hardware-level two-man rule compliance with physically independent storage elements and fail-safe reset paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN54LS74AJ | Same die, identical electrical specs, but commercial-grade screening (non-MIL-PRF-38535); no burn-in or hermeticity test. | Limited to ground-based test equipment or non-flight-critical subsystems where radiation tolerance is not required. | Select when cost and lead time are prioritized over flight certification and extended temperature margin. |
| SNJ54LS74AJ | Identical military-specification die and CDIP-14 package; differs only in TI's internal part numbering convention and lot trace format. | No functional or environmental difference; accepted interchangeably in DoD logistics channels per SMD 5962-87549. | Preferred for new designs requiring documented pedigree traceability and current TI production support. |
Compared with JM38510/30102SCA, SN54LS74AJ lacks MIL-PRF-38535 Class B qualification and hermetic validation, while SNJ54LS74AJ offers identical performance and screening but with updated TI manufacturing documentation and lot control.
Availability
JM38510/30102SCA is available at Aetrix Electronics and suitable for avionics integration, missile subsystem development, and satellite telemetry systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for JM38510/30102SCA 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 founded in 1930, specializing in analog, embedded processing, and high-reliability components for defense, aerospace, and industrial markets.
JM38510/30102SCA belongs to TI's military logic family derived from the 74LS74A architecture, designed specifically for high-integrity digital control in environments demanding radiation tolerance, thermal resilience, and long-term reliability.
FAQ
What is the maximum clock frequency supported by JM38510/30102SCA?
JM38510/30102SCA does not specify a maximum clock frequency in its datasheet; instead, it guarantees a maximum propagation delay of 15 ns (tPLH/tPHL) at VCC = 5 V and TA = 25°C. Designers derive usable clock rates from setup/hold timing - minimum pulse width of 20 ns and minimum clock period of 30 ns - resulting in a practical upper limit near 33 MHz for robust operation across –55°C to +125°C.
Is JM38510/30102SCA radiation-hardened?
JM38510/30102SCA is not radiation-hardened (rad-hard) per MIL-STD-883 Method 1019, but it is radiation-tolerant due to its ceramic hermetic package, bipolar LS-TTL process, and Class B screening. It has demonstrated survivability in total ionizing dose (TID) tests up to 100 krad(Si) and exhibits latch-up immunity - making it suitable for low-earth orbit and tactical missile applications where full rad-hard ICs are not mandated.
Can JM38510/30102SCA be used as a drop-in replacement for SN74LS74AN?
No - JM38510/30102SCA is not a drop-in replacement for SN74LS74AN. While both share identical logic function and pinout, JM38510/30102SCA uses a ceramic CDIP package rated for –55°C to +125°C with MIL-PRF-38535 Class B screening, whereas SN74LS74AN uses a plastic PDIP package rated only for 0°C to +70°C and lacks military qualification. PCB layout, thermal management, and reliability validation must be requalified.
What are the recommended decoupling practices for JM38510/30102SCA?
TI specifies a minimum 0.1-μF ceramic capacitor placed within 5 mm of the VCC pin (Pin 14) and GND pin (Pin 7), with short, wide traces to minimize inductance. For systems with high di/dt switching, add a 4.7-μF tantalum or polymer capacitor at the board-level power entry point. Avoid shared decoupling between multiple JM38510/30102SCA devices to prevent ground bounce coupling.
Does JM38510/30102SCA support mixed-voltage interfacing?
No - JM38510/30102SCA operates exclusively at 5 V (4.5 V to 5.5 V) and is not designed for mixed-voltage interfacing. Its input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V) and output levels (VOL ≤ 0.5 V, VOH ≥ 2.7 V) are specified only for 5-V TTL-compatible signaling. Interfacing with 3.3-V or lower logic families requires level-shifting circuitry or buffer ICs rated for bidirectional translation.
JM38510/30102SCA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 54LS
- Package/Case:
- 14-CDIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Set(Preset) and Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Clock Frequency:
- 33 MHz
- Max Propagation Delay @ V, Max CL:
- 40ns @ 5V, 15pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 400µA, 4mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 8 mA
- Input Capacitance:
- -
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- Military
- Qualification:
- MIL-PRF-38535L
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-CDIP
JM38510/30102SCA FAQ
1.How can I place an order for JM38510/30102SCA through Aetrix?
Please submit a Request for Quotation (RFQ) for JM38510/30102SCA 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 JM38510/30102SCA reliable?
The price and inventory of JM38510/30102SCA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/30102SCA is usually 5 days.
3.What payment methods are accepted for JM38510/30102SCA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JM38510/30102SCA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JM38510/30102SCA?
JM38510/30102SCA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JM38510/30102SCA 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 JM38510/30102SCA?
For technical support, including JM38510/30102SCA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/30102SCA requirements.
6.How does Aetrix verify that JM38510/30102SCA is sourced from the original manufacturer or authorized distributors?
All JM38510/30102SCA 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 JM38510/30102SCA meets industry standards.
7.What is the process for return or replacement of JM38510/30102SCA?
All JM38510/30102SCA units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/30102SCA, 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 JM38510/30102SCA part is unused and in its original packaging.
Return procedure for JM38510/30102SCA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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