My Inquiry
My Account
Texas Instruments JM38510/65305B2A
- Part No.:
- JM38510/65305B2A
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- -
- Datasheet:
-
JM38510/65305B2A.pdf
- Description:
- J-K FLIP-FLOP, HC/UH SERIES, 2 F
- Quantity:
- Payment:
- Shipping:
Inventory:387
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
JM38510/65305B2A from Texas Instruments is a dual J-K negative-edge-triggered flip-flop in a 16-pin CDIP package, operating across −55°C to 125°C with supply voltage range 2 V to 6 V. It features ±4-mA output drive at 5 V, typical propagation delay of 13 ns, low input current (≤1 µA), and drives up to 10 LSTTL loads - used in military-grade synchronous logic control, state machines, and clock-domain synchronization circuits.
For engineers reviewing the JM38510/65305B2A datasheet, JM38510/65305B2A pinout, JM38510/65305B2A application, or JM38510/65305B2A equivalent, key selection criteria include guaranteed operation over extended temperature, negative-edge clocking behavior, independent preset/clear functionality per flip-flop, and compatibility with HC-series logic families in high-reliability embedded timing systems.
Technical Context
The JM38510/65305B2A implements two fully independent J-K flip-flops, each with asynchronous active-low preset (PRE) and clear (CLR) inputs that override clocked operation. Data at J and K inputs is latched on the negative-going edge of CLK only when both PRE and CLR are high, with setup time ≥17 ns (at VCC = 6 V) and zero hold time required after CLK transition.
Its logic architecture uses internal transmission gates and cross-coupled inverters to realize toggle, set, reset, and hold functions. Clock triggering is level-sensitive (not edge-slope dependent), and the device maintains full functionality under slow input transitions (up to 1000 ns at VCC = 2 V), though functional assurance in shift/toggle modes requires adherence to specified transition times.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 6 V - supports mixed-voltage system interfacing and battery-backed operation down to 2 V. |
| Propagation Delay (tpd) | 13 ns typical at VCC = 5 V - enables reliable operation up to 25 MHz clock frequency in synchronous designs. |
| Output Drive Capability | ±4 mA at VCC = 5 V - sufficient to directly drive 10 LSTTL loads without buffering. |
| Input Current (II) | ≤1 µA max - minimizes loading on preceding logic stages and reduces static power in large fan-out networks. |
| Operating Temperature | −55°C to +125°C - qualified per MIL-PRF-38535 for use in aerospace, defense, and downhole industrial systems. |
| Quiescent Current (ICC) | 40 µA max - enables low-power standby states in mission-critical control sequencers. |
| Logic Family | High-speed CMOS (HC) - provides CMOS-level noise immunity and TTL-compatible voltage thresholds. |
Pinout & Package
Package: 16-pin Ceramic Dual In-line Package (CDIP), hermetically sealed, compliant with MIL-STD-883.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1CLK | Negative-edge-triggered clock input for first flip-flop; asynchronous operation disabled when PRE or CLR is low. |
| 2 | 1K | Data input for first flip-flop; controls reset behavior when CLK falls and PRE/CLR are inactive. |
| 3 | 1J | Data input for first flip-flop; controls set behavior on CLK↓; tied high for toggle mode. |
| 4 | 1PRE | Asynchronous active-low preset for Q₁ output; forces Q₁ = H regardless of CLK/J/K state. |
| 5 | 1Q̅ | Inverted output of first flip-flop; complementary to Q₁, usable as feedback or differential signaling. |
| 6 | 1Q | True output of first flip-flop; latched value reflects J/K state sampled at CLK falling edge. |
| 7 | 1CLR | Asynchronous active-low clear for Q₁ output; forces Q₁ = L independently of clock or data. |
| 8 | GND | Ground reference for all internal circuitry and I/O; must be low-impedance for noise immunity. |
| 9 | VCC | Positive supply rail (2–6 V); decoupling capacitor required near pin for transient current handling. |
| 10 | 2CLR | Asynchronous active-low clear for Q₂ output; independent of first flip-flop's control signals. |
| 11 | 2Q | True output of second flip-flop; electrically isolated but shares same VCC/GND rails. |
| 12 | 2Q̅ | Inverted output of second flip-flop; matches phase relationship of 1Q̅ for matched pair usage. |
| 13 | 2PRE | Asynchronous active-low preset for Q₂ output; no internal connection to first flip-flop logic. |
| 14 | 2J | Data input for second flip-flop; functionally identical to 1J with independent timing constraints. |
| 15 | 2K | Data input for second flip-flop; enables independent J-K configuration per channel. |
| 16 | 2CLK | Negative-edge-triggered clock input for second flip-flop; may be tied to 1CLK for synchronized operation. |
Key Features
| Feature | Design Value |
|---|---|
| Independent preset/clear per flip-flop | Enables asymmetric initialization - e.g., reset one stage while holding another in known state during power-up sequencing. |
| Negative-edge clock triggering | Reduces sensitivity to clock skew in cascaded counters; eliminates race conditions common with positive-edge designs in multi-stage pipelines. |
| Wide 2-V to 6-V supply range | Permits direct interface with 3.3-V microcontrollers and 5-V legacy peripherals without level-shifting circuitry. |
| Low 40-µA max ICC | Supports ultra-low-power operation in battery-powered telemetry modules where duty-cycled logic states are critical. |
| Guaranteed operation at −55°C to +125°C | Validated for deployment in avionics flight control units and satellite payload controllers exposed to extreme thermal cycling. |
Applications
| Avionics Timing Sequencer | Satellite Command Decoder |
|---|---|
|
Use Scenario: Generating precise, glitch-free enable pulses for phased antenna array calibration cycles. IC Role / Device Role / Timing Role: Dual J-K flip-flop providing synchronized, edge-aligned strobes with independent reset for channel isolation. Use Value: Ensures deterministic timing alignment between RF front-end modules using negative-edge sampling to avoid metastability in radiation-hardened environments. |
Use Scenario: Decoding command words from ground station telemetry streams into discrete actuator triggers. IC Role / Device Role / Timing Role: State register holding decoded instruction bits across multiple clock cycles until execution validation completes. Use Value: Leverages asynchronous PRE/CLR to force safe default states during command timeout or CRC failure - critical for fail-safe spacecraft autonomy. |
| Missile Guidance Logic Unit | Downhole Oilfield Sensor Controller |
|
Use Scenario: Implementing finite-state machine for seeker head stabilization loop with real-time fault recovery. IC Role / Device Role / Timing Role: Toggle-mode J-K pair generating quadrature timing for inertial measurement unit (IMU) sampling clocks. Use Value: Delivers sub-13-ns propagation consistency across −55°C to +125°C, ensuring closed-loop stability under rapid thermal transients. |
Use Scenario: Managing sensor wake-up/sleep cycles in high-pressure, high-temperature borehole monitoring systems. IC Role / Device Role / Timing Role: Synchronizing analog-to-digital conversion triggers with pressure-compensated sampling intervals. Use Value: Uses low 1-µA input current to minimize leakage-induced errors in millivolt-level sensor signal chains operating at 175°C ambient. |
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 |
|---|---|---|---|
| SNJ54HC112J | Identical electrical specs and pinout; differs only in qualification documentation - lacks QML-38535 Class B screening and lot traceability per MIL-PRF-38535. | Approved for non-mission-critical defense subsystems; not authorized for flight hardware or safety-critical launch systems. | Select SNJ54HC112J only if full QML-38535 Class B conformance (including burn-in, radiation testing, and lot acceptance test reports) is not required. |
| SN54HC112J | Same die and package, but rated for −55°C to +125°C without QML-38535 certification; no DLA-qualified lot trace or extended reliability testing. | Used in ground-support equipment and lab prototypes where environmental rating suffices but formal military qualification is unnecessary. | Choose SN54HC112J for cost-sensitive development platforms where full MIL-STD-883 compliance is deferred to later production lots. |
Compared with JM38510/65305B2A, SNJ54HC112J offers identical performance but omits QML-38535 Class B documentation and screening, while SN54HC112J provides the same temperature range without any military qualification - making JM38510/65305B2A the sole option for flight-certified, radiation-tolerant, and life-critical J-K logic in DoD programs.
Availability
JM38510/65305B2A is available at Aetrix Electronics and suitable for avionics timing sequencers, satellite command decoders, missile guidance logic units, and downhole oilfield sensor controllers requiring stable component supply across extended temperature and long product lifecycles.
Supply support for JM38510/65305B2A 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 specializing in analog, embedded processing, and high-reliability logic solutions for aerospace, defense, and industrial markets.
JM38510/65305B2A belongs to TI's military-grade HC logic family, designed specifically to meet MIL-PRF-38535 requirements for high-temperature stability, radiation tolerance, and long-term reliability in mission-critical systems.
FAQ
What is the maximum clock frequency supported by JM38510/65305B2A?
JM38510/65305B2A supports up to 29 MHz at VCC = 6 V and 25 MHz at VCC = 4.5 V under recommended operating conditions. These values are guaranteed across −55°C to +125°C and reflect worst-case propagation delay (tpd ≤ 31 ns at 6 V). The device achieves this performance using optimized HC-series CMOS gate design with minimal internal node capacitance.
Does JM38510/65305B2A require external pull-up or pull-down resistors on unused inputs?
Yes - all unused inputs of JM38510/65305B2A must be held at VCC or GND to prevent floating nodes that could cause excessive ICC, logic contention, or unintended state changes. This requirement is explicitly stated in TI Application Report SCBA004 and applies to J, K, PRE, CLR, and CLK inputs not actively driven in the design.
Is JM38510/65305B2A pin-compatible with commercial SN74HC112 variants?
JM38510/65305B2A uses the same 16-pin CDIP footprint and identical pin mapping as SNJ54HC112J and SN54HC112J, enabling mechanical interchangeability. However, it is not pin-compatible with SOIC (D) or PDIP (N) versions due to differing package dimensions and lead spacing - board layout must match CDIP-16 mechanical specifications.
What does the "B2A" suffix indicate in JM38510/65305B2A?
The "B2A" suffix denotes a specific QML-38535 qualification level: "B" indicates Class B screening (full MIL-STD-883 testing including burn-in, temperature cycling, and radiation hardness assurance), "2" specifies the revision level of the qualification test plan, and "A" identifies the particular lot trace and documentation package per DLA requirements for space-qualified components.
Can JM38510/65305B2A operate reliably at 2 V supply voltage?
Yes - JM38510/65305B2A is fully specified down to 2 V, with guaranteed parameters including tpd ≤ 165 ns, fmax ≥ 5 MHz, and VIH/VIL thresholds scaled proportionally. At 2 V, input transition time must remain ≤1000 ns to ensure functional correctness in toggle and count modes, as confirmed in the Absolute Maximum and Recommended Operating Conditions tables.
JM38510/65305B2A 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:
- -
JM38510/65305B2A FAQ
1.How can I place an order for JM38510/65305B2A through Aetrix?
Please submit a Request for Quotation (RFQ) for JM38510/65305B2A 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 JM38510/65305B2A reliable?
The price and inventory of JM38510/65305B2A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/65305B2A is usually 5 days.
3.What payment methods are accepted for JM38510/65305B2A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JM38510/65305B2A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JM38510/65305B2A?
JM38510/65305B2A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JM38510/65305B2A 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 JM38510/65305B2A?
For technical support, including JM38510/65305B2A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/65305B2A requirements.
6.How does Aetrix verify that JM38510/65305B2A is sourced from the original manufacturer or authorized distributors?
All JM38510/65305B2A 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 JM38510/65305B2A meets industry standards.
7.What is the process for return or replacement of JM38510/65305B2A?
All JM38510/65305B2A units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/65305B2A, 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 JM38510/65305B2A part is unused and in its original packaging.
Return procedure for JM38510/65305B2A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JM38510/65305B2A Tags
-
SN74HC74DR
Texas Instruments
-
SN74HC74PWR
Texas Instruments
-
74LVC1G74GT,115
Nexperia USA Inc.
-
SN74LVC2G74DCUR
Texas Instruments
-
CD4013BM96
Texas Instruments
-
SN74HCT273PWR
Texas Instruments
-
SN74LVC1G74DCUR
Texas Instruments
-
SN74HC574DWR
Texas Instruments
-
74LVC1G74DC,125
Nexperia USA Inc.
-
SN74HC273DWR
Texas Instruments
-
SN74HCT574DWR
Texas Instruments
-
SN74LVC1G74DCTR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
