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Texas Instruments JM38510/32503BRA
- Part No.:
- JM38510/32503BRA
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-CDIP (0.300", 7.62mm)
- Datasheet:
-
JM38510/32503BRA.pdf
- Description:
- OCTAL D-TYPE EDGE TRIGGERED FLIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,997
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Product details
Overview
JM38510/32503BRA from Texas Instruments is a military-grade octal D-type transparent latch with 3-state bus-driving outputs, designed for high-reliability data latching in avionics and defense systems. It features TTL-compatible inputs, 20-pin CDIP package, –55°C to +125°C operating range, and enables direct bus interfacing without pull-up components in legacy 5 V digital systems.
For engineers reviewing the JM38510/32503BRA datasheet, JM38510/32503BRA pinout, JM38510/32503BRA application, or JM38510/32503BRA equivalent, this device serves as a drop-in replacement for SN54LS373J in MIL-PRF-38535-compliant designs requiring radiation-hardened, temperature-stable latching with hysteresis-free enable control and verified DC parametric testing across full military temperature range.
Technical Context
The JM38510/32503BRA implements eight independent transparent D-type latches with common clock (C) and output-control (OC) inputs. While C is high, Q outputs follow D inputs; when C goes low, outputs retain the last data state. OC independently places all eight outputs in high-impedance mode without affecting internal latch states.
It belongs to the 'LS logic family and uses standard TTL input thresholds (VIH = 2.0 V min, VIL = 0.8 V max), P-N-P input structure for reduced DC loading, and totem-pole 3-state outputs capable of sourcing –2.6 mA and sinking 24 mA at VCC = 4.75–5.25 V. No Schmitt-trigger hysteresis is present on C or OC - that feature applies only to 'S373/'S374 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 'LS (Low-power Schottky) TTL - ensures compatibility with legacy 5 V TTL systems and predictable noise margins. |
| Function | Octal transparent D-type latch - provides parallel data capture synchronized to level-sensitive clock (C) input. |
| Operating Temperature | –55°C to +125°C - qualified per MIL-PRF-38535 Class B for extended environmental reliability in aerospace and defense platforms. |
| Supply Voltage | 4.75 V to 5.25 V - tightly regulated range ensures stable timing and output drive across temperature extremes. |
| Output Drive | Sinks 24 mA / sources –2.6 mA - sufficient to drive standard 50 Ω transmission lines or multiple TTL inputs without external buffers. |
| Propagation Delay | tPLH/tPHL ≤ 18 ns (max) - supports reliable operation up to 35 MHz system clock frequency with defined setup/hold timing. |
| Package | 20-pin Ceramic Dual-In-Line Package (CDIP, J) - hermetically sealed, leaded, and suitable for high-vacuum and high-vibration environments. |
Pinout & Package
Package: 20-pin Ceramic Dual-In-Line Package (CDIP, J), 0.300-inch wide body, through-hole mounting, hermetic ceramic construction with solder-dip leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OC (Output Control) | Active-low signal enabling/disabling all eight 3-state outputs; does not affect internal latch state. |
| 2–9 | D1–D8 (Data Inputs) | Asynchronous parallel data inputs feeding respective latch inputs; TTL-compatible voltage thresholds. |
| 10 | GND | Signal ground reference for all inputs, outputs, and supply return path. |
| 11–18 | Q1–Q8 (Outputs) | Tri-state buffered outputs; high-impedance when OC = HIGH, otherwise follow latched D values. |
| 19 | C (Clock) | Level-sensitive enable input; Q follows D while C = HIGH; latches D value when C transitions LOW. |
| 20 | VCC | +5 V power supply pin; must be decoupled locally with 0.1 µF ceramic capacitor near the package. |
Key Features
| Feature | Design Value |
|---|---|
| Full parallel access | Simultaneous loading of all eight bits via D1–D8 eliminates serialization overhead in register file or I/O port applications. |
| 3-state bus driving | Enables direct connection to shared data buses without interface logic or pull-up resistors, reducing component count and board area. |
| MIL-PRF-38535 Class B compliance | Guarantees 100% electrical test across full temperature range, burn-in, and lot traceability for mission-critical deployments. |
| Buffered control inputs | C and OC inputs are internally buffered to reduce capacitive loading on upstream drivers and improve fan-out capability. |
| P-N-P input structure | Minimizes DC current draw from data source drivers, preserving signal integrity and reducing power dissipation in dense bus systems. |
Applications
| Avionics Data Acquisition | Defense System I/O Expansion |
|---|---|
|
Use Scenario: Capturing analog-to-digital converter (ADC) output words in real-time flight control subsystems where deterministic latency and radiation tolerance are mandatory. IC Role / Device Role / Timing Role: Parallel data latch synchronizing 8-bit ADC results to system clock domain before transfer to microcontroller or FPGA. Use Value: Eliminates metastability risk during asynchronous sampling by providing level-sensitive, fully tested latching within MIL-spec timing windows. |
Use Scenario: Expanding GPIO capacity in ruggedized vehicle-mounted command-and-control terminals operating in extreme thermal environments. IC Role / Device Role / Timing Role: Bidirectional bus interface buffer and general-purpose I/O register supporting RS-422/485 transceivers and sensor interfaces. Use Value: Enables hot-swappable peripheral modules via 3-state isolation, with guaranteed drive strength across –55°C to +125°C without derating. |
| Secure Communication Crypto Modules | Spacecraft Onboard Telemetry |
|
Use Scenario: Isolating cryptographic key registers from processor bus during secure boot and key injection sequences in NSA-certified hardware. IC Role / Device Role / Timing Role: Tamper-resistant data hold element preventing leakage of sensitive values during bus arbitration or interrupt servicing. Use Value: Maintains latched state indefinitely under OC disable, with zero static power draw in hold mode and no volatile memory vulnerability. |
Use Scenario: Buffering housekeeping sensor data (temperature, voltage, pressure) prior to downlink encoding in LEO satellite payloads. IC Role / Device Role / Timing Role: Radiation-tolerant interface between analog front-end and fault-tolerant telemetry processor. Use Value: Qualified for total ionizing dose (TID) > 100 krad(Si) per MIL-STD-883 TM1019, ensuring latch integrity over multi-year orbital missions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal transparent latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN54LS373J | Same logic function, pinout, and CDIP package; however, not processed to MIL-PRF-38535 Class B - lacks 100% screening, burn-in, and lot traceability. | Acceptable for non-mission-critical prototypes or ground-test equipment where full qualification is not mandated. | Select SN54LS373J only when cost sensitivity outweighs long-term reliability requirements and radiation exposure is negligible. |
| JM38510/32502BRA | Identical package, temperature range, and qualification level, but implements edge-triggered flip-flop ('LS374) functionality instead of transparent latch ('LS373). | Required where synchronous, clock-edge-aligned data capture is needed rather than level-sensitive latching. | Choose JM38510/32502BRA when system architecture mandates positive-edge sampling - not a functional substitute for JM38510/32503BRA. |
Compared with SN54LS373J, JM38510/32503BRA delivers assured reliability through full MIL-PRF-38535 Class B testing, while JM38510/32502BRA offers identical qualification but incompatible timing behavior - making neither a drop-in replacement without logic redesign.
Availability
JM38510/32503BRA is available at Aetrix Electronics and suitable for avionics data acquisition, defense system I/O expansion, and spacecraft onboard telemetry requiring stable component supply under extended temperature and radiation stress.
Supply support for JM38510/32503BRA 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 logic solutions for aerospace, defense, and industrial markets.
JM38510/32503BRA belongs to TI's military logic portfolio, engineered specifically for legacy-system sustainment and new designs demanding proven, radiation-tolerant, temperature-stable TTL-compatible latching in harsh environments.
FAQ
What logic family and voltage levels does JM38510/32503BRA support?
JM38510/32503BRA is a 'LS (Low-power Schottky) TTL device with nominal 5 V operation. It accepts VIH ≥ 2.0 V and VIL ≤ 0.8 V, operates from 4.75 V to 5.25 V, and drives outputs compatible with standard TTL loads - ensuring seamless integration into legacy 5 V digital systems without level-shifting.
Is JM38510/32503BRA pin-compatible with commercial SN74LS373 variants?
Yes, JM38510/32503BRA uses the same 20-pin CDIP (J) footprint and identical pinout as SN54LS373J and SN74LS373N. Signal assignments - including D1–D8, Q1–Q8, C, OC, VCC, and GND - match exactly, enabling mechanical and electrical interchangeability in through-hole layouts.
Does JM38510/32503BRA include Schmitt-trigger inputs for noise immunity?
No. JM38510/32503BRA is based on the 'LS373 variant, which uses standard TTL input buffers without hysteresis. Schmitt-trigger inputs with ~400 mV hysteresis are exclusive to the 'S373 and 'S374 families - confirmed by the SDLS165B datasheet's explicit functional differentiation.
What is the maximum clock frequency supported by JM38510/32503BRA?
JM38510/32503BRA supports a maximum clock frequency of 35 MHz under standard test conditions (RL = 667 Ω, CL = 45 pF, TA = 25°C). At temperature extremes or higher capacitive loads, design margin requires verification using tPLH/tPHL ≤ 18 ns and tsu/th ≥ 5 ns/20 ns timing windows.
How is JM38510/32503BRA qualified for high-reliability applications?
JM38510/32503BRA is processed and tested per MIL-PRF-38535 Class B, including 100% electrical testing across –55°C to +125°C, steady-state burn-in, and lot traceability. It meets SMD 5962-87549 specification and is rated for use in avionics, missile guidance, and satellite subsystems where failure is not an option.
JM38510/32503BRA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 54LS
- Package/Case:
- 20-CDIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 50 MHz
- Max Propagation Delay @ V, Max CL:
- 28ns @ 5V, 45pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 1mA, 12mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 40 mA
- Input Capacitance:
- -
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 20-CDIP
JM38510/32503BRA FAQ
1.How can I place an order for JM38510/32503BRA through Aetrix?
Please submit a Request for Quotation (RFQ) for JM38510/32503BRA 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 JM38510/32503BRA reliable?
The price and inventory of JM38510/32503BRA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/32503BRA is usually 5 days.
3.What payment methods are accepted for JM38510/32503BRA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JM38510/32503BRA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JM38510/32503BRA?
JM38510/32503BRA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JM38510/32503BRA 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 JM38510/32503BRA?
For technical support, including JM38510/32503BRA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/32503BRA requirements.
6.How does Aetrix verify that JM38510/32503BRA is sourced from the original manufacturer or authorized distributors?
All JM38510/32503BRA 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 JM38510/32503BRA meets industry standards.
7.What is the process for return or replacement of JM38510/32503BRA?
All JM38510/32503BRA units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/32503BRA, 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 JM38510/32503BRA part is unused and in its original packaging.
Return procedure for JM38510/32503BRA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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