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Texas Instruments JM38510/37101SCA
- Part No.:
- JM38510/37101SCA
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- -
- Datasheet:
-
JM38510/37101SCA.pdf
- Description:
- ALS SERIES, 2 FUNC, POSITIVE EDG
- Quantity:
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Product details
Overview
JM38510/37101SCA from Texas Instruments is a military-grade dual positive-edge-triggered D-type flip-flop IC operating across −55°C to 125°C, featuring independent preset (PRE) and clear (CLR) inputs, 5 V nominal supply voltage, 25 MHz maximum clock frequency (CL = 50 pF), and TTL-compatible input/output levels. It serves as a synchronous storage element in hardened digital control logic for aerospace telemetry sequencers and radiation-tolerant avionics timing circuits.
For engineers reviewing the JM38510/37101SCA datasheet, JM38510/37101SCA pinout, JM38510/37101SCA application, or JM38510/37101SCA equivalent, this page delivers verified functional specifications, military-qualified package details, absolute maximum ratings, switching timing constraints, and direct alternatives for high-reliability system design.
Technical Context
The JM38510/37101SCA implements two identical edge-triggered D flip-flops with asynchronous active-low PRE and CLR controls. Each stage transfers data from D to Q on the rising edge of CLK only when both PRE and CLR are high, with no dependency on CLK rise time-triggering occurs at a defined voltage threshold.
It belongs to the SN54ALS74A family and is characterized for full military temperature operation. Its logic behavior follows the standard D-type truth table with non-overlapping asynchronous set/reset priority, and output states remain stable after hold-time compliance without metastability propagation under valid setup/hold conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | ALS (Advanced Low-Power Schottky) TTL - enables low-power, high-speed operation with standard TTL voltage compatibility. |
| Max Clock Frequency | 25 MHz at CL = 50 pF - defines maximum synchronous update rate in buffered logic paths with typical load. |
| Supply Voltage Range | 4.5 V to 5.5 V - ensures robust operation across power rail variations in regulated military power systems. |
| Input Voltage Thresholds | VIH = 2.0 V min, VIL = 0.8 V max - guarantees noise margin >0.4 V against TTL-level interference in noisy environments. |
| Output Drive Capability | IOL = 4 mA / IOH = −0.4 mA - supports direct fan-out to ≥10 standard TTL loads without buffering. |
| Operating Temperature | −55°C to 125°C - qualified per MIL-PRF-38535 Class S for use in spaceflight, missile guidance, and engine control units. |
| Propagation Delay | tPLH/tPHL ≤ 23 ns (CLK to Q) - determines worst-case path delay in synchronous state machines and counters. |
Pinout & Package
Ceramic Dual-In-Line Package (CDIP), J package, 14-pin, hermetically sealed with ceramic lid and glass frit seal per MIL-STD-1835 GDIP1-T14. Height ≤ 5.08 mm. Pin 1 identified by optional index mark on cap.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1CLR | Active-low asynchronous reset for first flip-flop - forces 1Q = L, 1Q̅ = H independent of clock or data. |
| 2 | 1D | Data input for first flip-flop - sampled on rising CLK edge when PRE/CLR are inactive (high). |
| 3 | 1CLK | Clock input for first flip-flop - rising-edge sensitive with voltage-threshold triggering, not slew-rate dependent. |
| 4 | 1PRE | Active-low asynchronous preset for first flip-flop - forces 1Q = H, 1Q̅ = L regardless of other inputs. |
| 5 | 1Q | True output of first flip-flop - latched value of 1D at last qualifying CLK↑ edge. |
| 6 | 1Q̅ | Inverted output of first flip-flop - complementary to 1Q, available for differential signaling or feedback. |
| 7 | GND | Ground reference - must be low-impedance connection to minimize ground bounce in high-speed switching. |
| 8 | VCC | +5 V power supply - decoupling capacitor (0.1 µF ceramic) required within 1 cm of this pin for noise suppression. |
| 9 | 2CLR | Active-low asynchronous reset for second flip-flop - independent control, no coupling to first stage. |
| 10 | 2D | Data input for second flip-flop - electrically isolated from 1D; supports dual-channel parallel data capture. |
| 11 | 2CLK | Clock input for second flip-flop - may share CLK with first stage or operate from separate timing source. |
| 12 | 2PRE | Active-low asynchronous preset for second flip-flop - fully independent of 1PRE; enables selective initialization. |
| 13 | 2Q | True output of second flip-flop - synchronized to 2CLK, unaffected by 1CLK or 1D transitions. |
| 14 | 2Q̅ | Inverted output of second flip-flop - provides complementary latch state for bus drivers or XOR logic gates. |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Set/Reset Priority | PRE and CLR override clock and data - enables immediate state forcing for fault recovery or mode initialization. |
| Voltage-Threshold Clock Triggering | CLK edge detection independent of rise time - eliminates timing skew due to signal distortion in long traces or backplanes. |
| Military Temperature Qualification | Tested and screened over −55°C to 125°C - meets MIL-PRF-38535 Class S requirements for mission-critical hardware. |
| Low Power Dissipation | 6 mW per flip-flop typical - reduces thermal load in densely packed modules and extends battery life in portable defense systems. |
| TTL-Compatible I/O Levels | VIH/VIL and VOH/VOL match standard TTL specs - allows seamless integration into legacy 5 V logic families without level shifters. |
Applications
| Flight Control Sequencing | Secure Data Latching |
|---|---|
|
Use Scenario: Capturing discrete command signals from flight control computers before actuator driver activation in real-time UAV autopilot loops. IC Role / Device Role / Timing Role: Dual D flip-flop providing synchronized, glitch-free registration of pitch/roll enable bits with independent reset for emergency abort. Use Value: Ensures deterministic sampling at 25 MHz with <23 ns propagation delay, preventing race conditions during rapid control updates. |
Use Scenario: Storing encrypted key fragments in tamper-resistant cryptographic modules where state integrity must survive voltage transients. IC Role / Device Role / Timing Role: Hardened storage element holding critical bits across power cycles, leveraging PRE/CLR for secure zeroization on intrusion detection. Use Value: −55°C to 125°C operation and hermetic CDIP packaging maintain bit validity under extreme thermal shock and EMI exposure. |
| Radar Pulse Timing | Telemetry Frame Sync |
|
Use Scenario: Aligning transmit/receive gate windows in pulsed Doppler radar front-ends using precise clock-domain crossing between RF and baseband clocks. IC Role / Device Role / Timing Role: Edge-triggered register synchronizing asynchronous trigger pulses to system clock domain while suppressing metastability via setup/hold compliance. Use Value: Verified 16 ns setup and 2 ns hold times guarantee reliable capture of sub-10 ns radar strobes without timing violations. |
Use Scenario: Generating frame synchronization markers in satellite telemetry downlink processors where bit alignment must persist across orbital thermal gradients. IC Role / Device Role / Timing Role: Dual-stage latch generating aligned start-of-frame pulses from asynchronous sensor data streams. Use Value: Independent PRE/CLR pins allow on-the-fly frame counter reset without disrupting adjacent telemetry channels. |
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 |
|---|---|---|---|
| SN54AS74AJ | Higher speed: 90 MHz max clock, 10.5 mA ICC, AS-family propagation delays ≤10 ns. | Used where higher throughput is needed but radiation tolerance is secondary to speed. | Select SN54AS74AJ when system clock exceeds 25 MHz and temperature range remains −55°C to 125°C. |
| JM38510/37101BCA | Same ALS family, identical electrical specs, but CDIP J package with different screening lot traceability per MIL-PRF-38535. | Preferred for programs requiring alternate lot qualification or specific procurement documentation lineage. | Choose JM38510/37101BCA when continuity of manufacturing pedigree or alternate test report format is mandated. |
Compared with JM38510/37101SCA, SN54AS74AJ trades lower power and tighter noise margins for significantly higher speed, while JM38510/37101BCA offers identical functionality with divergent quality documentation-neither is pin-compatible without verifying mechanical footprint and thermal pad layout.
Availability
JM38510/37101SCA is available at Aetrix Electronics and suitable for aerospace flight control, secure communications, and radar subsystems requiring stable component supply under extended lifecycle management and traceable sourcing.
Supply support for JM38510/37101SCA 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 founded in 1930, specializing in analog, embedded processing, and high-reliability logic solutions for industrial, automotive, and defense markets.
JM38510/37101SCA belongs to TI's military logic portfolio designed specifically for ruggedized digital control in safety-critical systems where guaranteed performance across extreme environmental stress is mandatory.
FAQ
What is the absolute maximum supply voltage rating for JM38510/37101SCA?
The absolute maximum supply voltage (VCC) for JM38510/37101SCA is 7 V, as specified in the absolute maximum ratings table. Operation above this level risks permanent damage. The recommended operating range is strictly 4.5 V to 5.5 V, and sustained use at 7 V is prohibited even briefly. This limit applies to JM38510/37101SCA regardless of temperature or load condition.
Does JM38510/37101SCA support 3.3 V logic interfacing?
No, JM38510/37101SCA is a 5 V TTL device with VIH minimum of 2.0 V and VIL maximum of 0.8 V - it does not meet 3.3 V logic thresholds. Direct connection to 3.3 V microcontrollers or FPGAs requires level-shifting circuitry. The internal architecture, biasing, and output drive are optimized for 5 V operation, and JM38510/37101SCA is not characterized for reliable function below 4.5 V VCC.
What is the meaning of "S" in the JM38510/37101SCA part number suffix?
The "S" in JM38510/37101SCA denotes the screening level per MIL-PRF-38535: it indicates Class S (Space Level) qualification, including extended burn-in, radiation hardness assurance testing, and full lot traceability. This distinguishes JM38510/37101SCA from Class B or Class K variants and confirms its suitability for spacecraft and high-altitude platforms. The "CA" suffix specifies ceramic DIP (J) package with standard lead finish.
Can JM38510/37101SCA be used in place of SN54ALS74AJ?
Yes - JM38510/37101SCA is functionally and electrically identical to SN54ALS74AJ, sharing the same ALS logic family, pinout, timing, and military temperature range. Both are CDIP-packaged, −55°C to 125°C rated devices. However, JM38510/37101SCA carries additional Space Level (Class S) screening per MIL-PRF-38535, making it acceptable where SN54ALS74AJ is not certified for flight hardware.
What are the thermal resistance characteristics of JM38510/37101SCA?
Thermal resistance (θJA) is not published for JM38510/37101SCA in the SDAS143C datasheet, as ceramic DIP packages are not characterized using standard JEDEC PCB test boards. The device relies on conduction through leads and hermetic sealing rather than convective cooling. Maximum junction temperature is inferred from ambient limits (−55°C to 125°C) and power dissipation (2.4–4 mA ICC × 5 V ≈ 12–20 mW), resulting in negligible self-heating under normal operation. No θJA value is assigned to JM38510/37101SCA in official TI documentation.
JM38510/37101SCA 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:
- -
JM38510/37101SCA FAQ
1.How can I place an order for JM38510/37101SCA through Aetrix?
Please submit a Request for Quotation (RFQ) for JM38510/37101SCA 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 JM38510/37101SCA reliable?
The price and inventory of JM38510/37101SCA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/37101SCA is usually 5 days.
3.What payment methods are accepted for JM38510/37101SCA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JM38510/37101SCA transactions.
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4.How is shipping managed for JM38510/37101SCA?
JM38510/37101SCA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JM38510/37101SCA 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 JM38510/37101SCA?
For technical support, including JM38510/37101SCA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/37101SCA requirements.
6.How does Aetrix verify that JM38510/37101SCA is sourced from the original manufacturer or authorized distributors?
All JM38510/37101SCA 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 JM38510/37101SCA meets industry standards.
7.What is the process for return or replacement of JM38510/37101SCA?
All JM38510/37101SCA units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/37101SCA, 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 JM38510/37101SCA part is unused and in its original packaging.
Return procedure for JM38510/37101SCA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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