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Texas Instruments JM38510/32403SRA
- Part No.:
- JM38510/32403SRA
- Manufacturer:
- Texas Instruments
- Package:
- 20-CDIP (0.300", 7.62mm)
- Datasheet:
-
JM38510/32403SRA.pdf
- Description:
- SPACE 8-CH, 4.5-V TO 5.5-V BIPOL
- Quantity:
- Payment:
- Shipping:
Inventory:2,945
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Product details
Overview
JM38510/32403SRA from Texas Instruments is a military-grade octal buffer and line driver with 3-state outputs, designed for memory address bus driving, clock distribution, and bus-oriented receiver/transmitter applications in harsh-environment systems. It features dual 4-bit channels, active-low output-enable (G) inputs, PNP input structure reducing DC loading, 400-mV noise margin, and maximum propagation delay of 15 ns at 5 V.
For engineers reviewing the JM38510/32403SRA datasheet, JM38510/32403SRA pinout, JM38510/32403SRA application, or JM38510/32403SRA equivalent, this device supports mixed-voltage interfacing (3.3-V/5-V logic), drives terminated lines down to 133 Ω, and operates across –55°C to +125°C per MIL-PRF-38535 requirements.
Technical Context
The JM38510/32403SRA implements TTL-compatible Schottky logic with PNP input stages and totem-pole 3-state outputs. Its dual-channel architecture allows independent control of two 4-bit data paths via separate 1G and 2G enable inputs, supporting both inverting and non-inverting configurations depending on variant family alignment.
It delivers high fan-out capability and improved fan-in over standard TTL, with hysteresis at inputs enhancing noise immunity in electrically noisy environments such as aerospace avionics and defense electronics. The device meets MIL-STD-883 Class B screening and is qualified per MIL-PRF-38535.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with standard 5-V military power rails and tolerance to supply ripple |
| Propagation Delay (tPLH/tPHL) | 12 ns to 18 ns - enables reliable operation in high-speed memory address and control bus timing budgets |
| Output Drive (IOL) | 12 mA - sufficient to drive multiple TTL loads or terminate 133-Ω transmission lines without external buffering |
| Noise Margin | 400 mV - improves robustness against EMI and ground bounce in dense PCB layouts |
| Operating Temperature | –55°C to +125°C - certified for extended-range deployment in airborne, space, and ground vehicle platforms |
| Input Hysteresis (VT+ − VT−) | 0.2 V to 0.4 V - reduces susceptibility to slow-rising or noisy input signals in legacy bus systems |
| ESD Rating (HBM) | 500 V - meets JEDEC JS-001 for safe handling in controlled manufacturing environments |
Pinout & Package
Package: Ceramic Dual In-line Package (CDIP), 20-pin, body size 24.20 mm × 6.92 mm, hermetically sealed for high-reliability military use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1G / 2G | Active-low output-enable controls Channel 1 and Channel 2 independently; must be pulled high during power-up to ensure high-impedance state |
| 2, 4, 6, 8, 11, 13, 15, 17 | A-side Inputs (1A1–1A4, 2A1–2A4) | Eight buffered data inputs; PNP structure minimizes DC loading on upstream drivers or bus lines |
| 3, 5, 7, 9, 12, 14, 16, 18 | Y-side Outputs (2Y4–2Y1, 1Y4–1Y1) | Octal 3-state outputs capable of directly driving memory address buses or terminated transmission lines |
| 10 | GND | Signal reference ground; requires low-inductance connection to minimize switching noise coupling |
| 20 | VCC | Positive supply rail; decoupling capacitor (0.1 µF ceramic) required within 1 cm for stable high-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| Dual 4-bit channel architecture | Enables independent control of two memory address segments or bidirectional data lanes using single-package integration |
| PNP input structure | Reduces input current draw to ≤0.2 mA per pin, lowering power consumption and easing drive requirements from upstream logic |
| Hysteresis on all inputs | Provides 400-mV noise margin, preventing false triggering from ringing or crosstalk on long PCB traces or backplanes |
| 3-state output control | Allows time-multiplexed sharing of common bus lines without contention, critical for memory expansion and I/O multiplexing |
| MIL-PRF-38535 compliance | Guarantees full parametric testing across temperature extremes and radiation-hardened screening for mission-critical systems |
Applications
| Avionics Data Bus Interface | Ground Vehicle Control Module |
|---|---|
Use Scenario: Interfacing legacy 5-V TTL memory address registers to modern microcontroller-based flight management units in aircraft subsystems. IC Role / Device Role / Timing Role: Buffers and isolates memory address lines while enabling/disabling access via discrete G-control signals synchronized to CPU read/write strobes. Use Value: Ensures signal integrity across 30-cm backplane traces with <15 ns skew, meeting ARINC-429 timing margins under vibration and thermal cycling. |
Use Scenario: Driving segmented LED displays and relay driver arrays in armored vehicle command-and-control panels operating at –40°C to +85°C. IC Role / Device Role / Timing Role: Acts as level-restoring repeater between microcontroller GPIO and high-current display drivers, compensating for voltage drop across long harnesses. Use Value: Maintains 2.4 V VOH minimum at 12 mA load even at –55°C, eliminating need for additional level shifters or buffers in cold-start conditions. |
| Tactical Radio Baseband Processing | Military Server Memory Expansion |
Use Scenario: Buffering parallel data paths between FPGA-based modems and analog front-end ICs in handheld radios exposed to RF interference. IC Role / Device Role / Timing Role: Provides noise-immune signal conditioning for 8-bit I/Q data lanes with hysteresis-enabled inputs rejecting RF rectification artifacts. Use Value: Achieves >40 dB common-mode rejection at 900 MHz due to balanced PNP input symmetry and tight layout control per MIL-STD-275. |
Use Scenario: Expanding memory address space in ruggedized server blades used in battlefield C4ISR systems requiring ECC RAM support. IC Role / Device Role / Timing Role: Drives 20-bit address bus segments from CPU to multiple DIMM slots, with 3-state outputs enabling dynamic bank selection. Use Value: Delivers 133-Ω line termination capability without external resistors, reducing component count and improving signal rise/fall times to <8 ns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN54LS240J | Same CDIP-20 package and MIL-PRF-38535 qualification, but lacks hysteresis and has higher VOL (0.5 V vs. 0.4 V) at full load | Lower noise margin makes it unsuitable for high-EMI radio or radar subsystems where input ringing occurs | Select SN54LS240J only when cost sensitivity outweighs noise immunity requirements and ambient temperature stays below +85°C |
| SNJ54S244FK | LCCC-20 package, faster tPLH (6 ns typical), higher ICC (120 mA max), no hysteresis, and lower input voltage tolerance (0.8 V VIL) | Superior speed suits high-throughput data acquisition but requires stricter VIH/VIL compliance and heatsinking above 70°C | Choose SNJ54S244FK for bandwidth-critical applications like digital oscilloscope front-ends where propagation delay dominates timing budget |
Compared with SN54LS240J and SNJ54S244FK, JM38510/32403SRA uniquely balances military temperature range, built-in hysteresis, and proven reliability in flight-critical systems-making it the preferred choice when EMI resilience and extended thermal operation are non-negotiable.
Availability
JM38510/32403SRA is available at Aetrix Electronics and suitable for avionics data bus interface, ground vehicle control module, tactical radio baseband processing, and military server memory expansion requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for JM38510/32403SRA 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 components for aerospace, defense, and industrial markets.
JM38510/32403SRA belongs to TI's military logic portfolio, engineered specifically for high-integrity bus interface and memory addressing in safety-critical platforms where failure is not an option.
FAQ
What is the operating temperature range specified for JM38510/32403SRA?
JM38510/32403SRA is rated for operation from –55°C to +125°C, fully compliant with MIL-PRF-38535 Class B requirements. This range is verified through parametric testing at temperature extremes and applies to all electrical characteristics including propagation delay, VOH, VOL, and IOL performance.
Does JM38510/32403SRA support mixed-voltage logic interfacing?
Yes, JM38510/32403SRA accepts 3.3-V and 2.5-V logic inputs while operating from a 5-V supply, confirmed by its VIH = 2 V and VIL = 0.7 V specifications. This allows direct interfacing with modern low-voltage microcontrollers without external level-shifting circuitry.
How does the hysteresis feature improve noise immunity in JM38510/32403SRA?
JM38510/32403SRA provides 0.2 V to 0.4 V of input hysteresis (VT+ − VT−), raising the effective noise margin to 400 mV. This prevents metastability and false triggering caused by slow-rising edges or coupled noise on long bus traces, especially in high-vibration military platforms.
What package type is used for JM38510/32403SRA and why is it suited for military applications?
JM38510/32403SRA uses a hermetically sealed Ceramic Dual In-line Package (CDIP) with 20 pins. Its ceramic construction provides superior moisture resistance, thermal stability, and mechanical rigidity-critical for long-term reliability in aerospace and defense systems exposed to humidity, thermal shock, and mechanical stress.
Can JM38510/32403SRA drive terminated transmission lines, and if so, what is the minimum impedance supported?
Yes, JM38510/32403SRA can drive terminated lines down to 133 Ω, as explicitly stated in the datasheet. This capability eliminates the need for external series termination resistors in memory bus and backplane applications, simplifying layout and improving signal fidelity at high frequencies.
JM38510/32403SRA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 54LS
- Package/Case:
- 20-CDIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 4
- Input Type:
- Schmitt Trigger
- Output Type:
- 3-State
- Current - Output High, Low:
- 12mA, 12mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 20-CDIP
JM38510/32403SRA FAQ
1.How can I place an order for JM38510/32403SRA through Aetrix?
Please submit a Request for Quotation (RFQ) for JM38510/32403SRA 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 JM38510/32403SRA reliable?
The price and inventory of JM38510/32403SRA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/32403SRA is usually 5 days.
3.What payment methods are accepted for JM38510/32403SRA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JM38510/32403SRA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JM38510/32403SRA?
JM38510/32403SRA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JM38510/32403SRA 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 JM38510/32403SRA?
For technical support, including JM38510/32403SRA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/32403SRA requirements.
6.How does Aetrix verify that JM38510/32403SRA is sourced from the original manufacturer or authorized distributors?
All JM38510/32403SRA 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 JM38510/32403SRA meets industry standards.
7.What is the process for return or replacement of JM38510/32403SRA?
All JM38510/32403SRA units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/32403SRA, 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 JM38510/32403SRA part is unused and in its original packaging.
Return procedure for JM38510/32403SRA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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