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Texas Instruments JM38510/37103B2A
- Part No.:
- JM38510/37103B2A
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- -
- Datasheet:
-
JM38510/37103B2A.pdf
- Description:
- 54ALS112A DUAL J-K NEGATIVE-EDGE
- Quantity:
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Inventory:4,677
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Product details
Overview
JM38510/37103B2A from Texas Instruments is a dual J-K negative-edge-triggered flip-flop IC designed for high-reliability military logic systems. It contains two independent flip-flops, operates over −55°C to 125°C, supports up to 25 MHz clock frequency, dissipates 6 mW per flip-flop typical, and features fully buffered inputs for maximum noise immunity in harsh environments such as avionics control and radiation-tolerant digital sequencers.
For engineers reviewing the JM38510/37103B2A datasheet, JM38510/37103B2A pinout, JM38510/37103B2A application, or JM38510/37103B2A equivalent, this device is selected for deterministic edge-triggered state storage in synchronous military-grade digital systems where input isolation, temperature resilience, and MIL-PRF-38535 Class B qualification are mandatory.
Technical Context
The JM38510/37103B2A implements two independent J-K flip-flops with asynchronous active-low preset (PRE) and clear (CLR), each triggered on the negative-going edge of CLK. Clock triggering is voltage-level–based-not dependent on fall time-ensuring robust timing across wide temperature and supply variations.
It uses Advanced Low-Power Schottky (ALS) bipolar technology, delivering 25 MHz max clock frequency at VCC = 4.5 V–5.5 V, 4 mA low-level output drive (IOL), and −0.4 mA high-level output current (IOH), with setup time (tsu) of 22 ns and hold time (th) of 0 ns relative to CLK↓.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Clock Frequency | 25 MHz maximum - defines maximum synchronous system clock rate without timing violation |
| Operating Temperature | −55°C to 125°C - qualified for full military ambient range per MIL-PRF-38535 |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V TTL/ALS logic rails with margin for ripple |
| Power Dissipation | 6 mW per flip-flop typical - enables dense packaging in thermally constrained avionics modules |
| Output Drive | IOL = 4 mA / IOH = −0.4 mA - sufficient to drive multiple ALS loads or interface to discrete buffers |
| Propagation Delay | tPLH/tPHL ≤ 26 ns (max) - ensures predictable timing margins in critical control-state machines |
| Input Thresholds | VIL = 0.7 V, VIH = 2.0 V - maintains noise immunity with ≥0.4 V DC noise margin under worst-case VCC |
Pinout & Package
Package: 20-lead Ceramic Leadless Chip Carrier (LCCC), FK package per MIL-STD-1835, hermetically sealed, lead finish POST-PLATE, RoHS-exempt per military specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 7, 8, 13, 14, 16, 17, 19, 20 | No internal connection (NC) | Unused pads; must remain unconnected to avoid parasitic coupling or mechanical stress |
| 3 | 2CLR | Asynchronous active-low clear for second flip-flop; overrides clock and data when asserted |
| 6 | 2CLK | Negative-edge clock input for second flip-flop; triggers state update on falling transition |
| 9 | 2K | Data input for second flip-flop; controls reset behavior when J=H and K=L, or toggle when J=K=H |
| 10 | 2J | Data input for second flip-flop; controls set behavior when J=L and K=H, or toggle when J=K=H |
| 11 | 2PRE | Asynchronous active-low preset for second flip-flop; forces Q=H regardless of other inputs |
| 12 | 2Q | True output of second flip-flop; complements 2Q̅ and updates only on CLK↓ or PRE/CLR assertion |
| 15 | 2Q̅ | Inverted output of second flip-flop; provides complementary state for differential routing or feedback |
| 18 | VCC | Positive supply terminal; requires local 0.1 µF ceramic decoupling adjacent to pin |
| GND | Ground | Reference return path; tied to substrate plane in LCCC for minimal ground bounce |
Key Features
| Feature | Design Value |
|---|---|
| Fully buffered inputs | Isolates internal logic from external noise transients, enabling reliable operation in EMI-intensive platforms like radar subsystems |
| Negative-edge clock triggering | Eliminates sensitivity to clock rise-time distortion, supporting clean state transitions even with slow-rising clocks |
| Asynchronous PRE/CLR | Allows immediate initialization or fault recovery independent of clock phase-critical for safety-critical reset sequences |
| TTL-compatible I/O levels | Direct interoperation with legacy 5 V TTL, ALS, and AS families without level-shifting circuitry |
| MIL-PRF-38535 Class B qualification | Guarantees screening, testing, and traceability per U.S. Department of Defense requirements for flight-critical hardware |
Applications
| Avionics Flight Control Sequencing | Secure Communication Synchronization |
|---|---|
|
Use Scenario: Storing mode-select states and validating command validity before actuator engagement in triple-modular-redundant (TMR) flight computers. IC Role / Device Role / Timing Role: Dual J-K flip-flop providing synchronized, glitch-free state latching with asynchronous reset for fail-safe shutdown. Use Value: Enables deterministic state capture at 25 MHz while surviving −55°C to 125°C thermal cycling and ionizing radiation environments. |
Use Scenario: Aligning encryption key loading cycles and frame boundary detection in Type 1 cryptographic modules. IC Role / Device Role / Timing Role: Edge-triggered storage element synchronizing internal crypto engine clocks to external secure timing references. Use Value: Provides voltage-level–based clock triggering and 22 ns setup time to maintain bit alignment under jitter-prone RF-adjacent conditions. |
| Nuclear Instrumentation Logic | Tactical Radar Pulse Generation |
|
Use Scenario: Capturing neutron detector pulse edges and gating counter enable signals in reactor monitoring systems. IC Role / Device Role / Timing Role: High-immunity dual latch converting analog comparator outputs into validated digital state transitions. Use Value: Fully buffered inputs reject EMI from nearby gamma detectors; MIL-spec temp range ensures stability during extended hot-cell operation. |
Use Scenario: Generating precise PRI (pulse repetition interval) timing windows and antenna scan synchronization in ground-based fire-control radars. IC Role / Device Role / Timing Role: Toggle-mode J-K configuration driving programmable delay chains for sub-microsecond pulse edge placement. Use Value: 26 ns max propagation delay and 0 ns hold time allow tight timing closure in multi-stage pulse shaping logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual J-K flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN54ALS112AJ | Same die, CDIP-16 package (J), no NC pins; identical electrical specs and temp range | Lacks LCCC's hermeticity and vibration resistance; suitable for board-level prototypes but not sealed chassis | Select SN54ALS112AJ for lab validation where FK package assembly is unavailable |
| SNJ54ALS112AJ | Identical to SN54ALS112AJ but with enhanced screening per JAN specification; same package and timing | Higher test coverage and lot traceability; required for DoD procurement contracts citing MIL-STD-883 | Choose SNJ54ALS112AJ when contractual compliance mandates JAN-level documentation and burn-in |
Compared with JM38510/37103B2A, SN54ALS112AJ offers identical logic function and speed but reduced mechanical ruggedness due to through-hole DIP construction, while SNJ54ALS112AJ adds JAN screening rigor without altering timing or drive capability-making it ideal for audit-driven defense programs.
Availability
JM38510/37103B2A is available at Aetrix Electronics and suitable for avionics flight control, nuclear instrumentation, secure communications, and tactical radar systems requiring stable component supply under extended temperature and radiation exposure conditions.
Supply support for JM38510/37103B2A 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 aerospace, defense, and industrial markets.
JM38510/37103B2A belongs to TI's military-qualified ALS logic family, engineered specifically for deterministic, noise-immune digital sequencing in mission-critical systems operating beyond commercial environmental limits.
FAQ
What is the qualified temperature range for JM38510/37103B2A?
JM38510/37103B2A is characterized for continuous operation from −55°C to 125°C per MIL-PRF-38535 Class B requirements. This range is verified through temperature cycling, steady-state bias life testing, and parametric screening across the full interval-not extrapolated or derated.
Does JM38510/37103B2A support toggle mode operation?
Yes, JM38510/37103B2A supports toggle mode by tying both J and K inputs high on either flip-flop. In this configuration, the output toggles on every negative clock edge-confirmed in the device's function table and used in frequency-division circuits within radar timing subsystems.
What package type is JM38510/37103B2A supplied in?
JM38510/37103B2A is supplied exclusively in the 20-lead Ceramic Leadless Chip Carrier (LCCC) package, designated FK per MIL-STD-1835. It features a hermetic ceramic body, gold-plated leads with post-plate finish, and no external leads-requiring solder reflow onto land-grid arrays.
How does the clock triggering mechanism work in JM38510/37103B2A?
JM38510/37103B2A triggers on the negative-going edge of CLK at a defined voltage threshold-not based on edge slew rate. This voltage-level detection ensures consistent timing behavior across varying clock rise/fall times and supply voltages, as specified in the SDAS199A datasheet timing diagrams.
Is JM38510/37103B2A pin-compatible with commercial SN74ALS112A variants?
No, JM38510/37103B2A is not pin-compatible with SN74ALS112A variants. It uses a 20-pin LCCC (FK) package with 12 NC pins, whereas SN74ALS112A uses 16-pin DIP (N), SOIC (D), or NS packages with full pin utilization-requiring PCB redesign for substitution.
JM38510/37103B2A 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:
- -
JM38510/37103B2A FAQ
1.How can I place an order for JM38510/37103B2A through Aetrix?
Please submit a Request for Quotation (RFQ) for JM38510/37103B2A 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 JM38510/37103B2A reliable?
The price and inventory of JM38510/37103B2A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/37103B2A is usually 5 days.
3.What payment methods are accepted for JM38510/37103B2A?
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4.How is shipping managed for JM38510/37103B2A?
JM38510/37103B2A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JM38510/37103B2A 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 JM38510/37103B2A?
For technical support, including JM38510/37103B2A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/37103B2A requirements.
6.How does Aetrix verify that JM38510/37103B2A is sourced from the original manufacturer or authorized distributors?
All JM38510/37103B2A 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 JM38510/37103B2A meets industry standards.
7.What is the process for return or replacement of JM38510/37103B2A?
All JM38510/37103B2A units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/37103B2A, 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 JM38510/37103B2A part is unused and in its original packaging.
Return procedure for JM38510/37103B2A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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