My Inquiry
My Account
Texas Instruments JM38510/32403SSA
- Part No.:
- JM38510/32403SSA
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
JM38510/32403SSA.pdf
- Description:
- SN54LS244-SP OCTAL BUFFERS AND L
- Quantity:
- Payment:
- Shipping:
Inventory:2,028
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
JM38510/32403SSA 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 environments. It features dual 4-bit channels, active-low output-enable (G) control per channel, PNP input structure reducing DC loading, 400-mV noise margin, and maximum propagation delay of 15 ns at 5 V.
For engineers reviewing the JM38510/32403SSA datasheet, JM38510/32403SSA pinout, JM38510/32403SSA application, or JM38510/32403SSA equivalent, this device serves as a high-reliability interface solution for MIL-PRF-38535-compliant systems requiring stable 5-V TTL-compatible drive, bus isolation, and noise-immune signal conditioning in aerospace, defense, and industrial control subsystems.
Technical Context
The JM38510/32403SSA implements two independent 4-bit non-inverting buffer sections (SN54LS244 function), each with separate active-low output-enable (1G, 2G) inputs. Its PNP input stage minimizes DC loading on upstream logic, while built-in input hysteresis enhances noise immunity on shared bus lines.
It operates across –55°C to +125°C under 4.5 V to 5.5 V supply, supports 3.3-V/5-V mixed-voltage interfacing, and delivers ±24 mA low-level output drive (IOL) and –15 mA high-level output drive (IOH) - enabling direct termination into 133 Ω lines and robust bus driving capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | LS-TTL (Low-power Schottky), compatible with standard 5-V TTL systems and tolerant of 3.3-V inputs |
| Supply Voltage Range | 4.5 V to 5.5 V - ensures operation across wide military-grade voltage tolerances |
| Propagation Delay (tpd) | 12–18 ns max (at VCC = 5 V, CL = 45 pF) - enables reliable timing in high-speed address/data buses |
| Output Drive (IOL / IOH) | 24 mA / –15 mA - sufficient to drive terminated lines down to 133 Ω without external buffers |
| Noise Margin | 400 mV - improves immunity to EMI and crosstalk in dense PCB layouts and noisy environments |
| Input Hysteresis (VT+ − VT−) | 0.2–0.4 V - stabilizes switching thresholds against slow-rising or noisy input signals |
| Operating Temperature | –55°C to +125°C - qualified per MIL-PRF-38535 Class B for extended environmental reliability |
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 inputs - independently disable Channel 1 or Channel 2 outputs to high-impedance state |
| 2, 4, 6, 8, 11, 13, 15, 17 | 1A1–1A4 / 2A1–2A4 | Non-inverting data inputs - accept TTL-level signals; PNP structure reduces DC loading on source drivers |
| 3, 5, 7, 9, 12, 14, 16, 18 | 2Y4–2Y1 / 1Y4–1Y1 | Non-inverting 3-state outputs - drive bus lines directly; high-Z state prevents contention during multiplexing |
| 10 | GND | Ground reference - must be low-inductance connection to minimize switching noise coupling |
| 20 | VCC | Positive power supply - requires local 0.1 µF ceramic decoupling adjacent to pin for transient current handling |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4-bit non-inverting buffers | Enables isolated control of two memory address segments or bidirectional data lanes using single package |
| PNP input structure | Reduces input DC loading to ≤0.2 mA, minimizing burden on upstream TTL or CMOS drivers |
| Input hysteresis (≥0.2 V) | Prevents chatter on slow or noisy bus signals - critical for reliable operation in electrically hostile platforms |
| 3-state outputs with separate G controls | Allows time-multiplexed bus sharing without external logic; eliminates need for discrete bus switches |
| MIL-PRF-38535 Class B qualification | Guarantees full parametric testing across temperature, radiation tolerance, and long-term reliability per military spec |
Applications
| Memory Address Bus Driver | Avionics Data Bus Repeater |
|---|---|
|
Use Scenario: Driving 20-bit memory address lines from a microprogram ROM or CPU address latch across a 15-cm PCB trace in an airborne mission computer. IC Role / Device Role / Timing Role: Non-inverting buffer with 3-state isolation; provides fan-out gain and edge sharpening while preventing back-driving during bus arbitration. Use Value: 24 mA IOL ensures clean transitions into 133 Ω terminated lines; 15 ns tpd maintains setup/hold timing margins at 20 MHz clock rates. |
Use Scenario: Restoring signal integrity on a daisy-chained ARINC 429 or MIL-STD-1553B stub bus operating in a radar processor cabinet. IC Role / Device Role / Timing Role: Level-restoring repeater; regenerates degraded TTL waveforms with hysteresis-enhanced noise rejection. Use Value: 400 mV noise margin suppresses EMI-induced glitches; PNP inputs avoid loading legacy transmitter outputs. |
| Secure I/O Expander Interface | Ruggedized Industrial PLC Backplane |
|
Use Scenario: Isolating FPGA I/O banks from a safety-critical sensor acquisition module in a nuclear plant controller. IC Role / Device Role / Timing Role: Bidirectional bus interface with independent channel enable; separates read/write paths via 1G/2G control sequencing. Use Value: Hermetic CDIP package withstands gamma radiation exposure; –55°C to +125°C range supports uncooled enclosure operation. |
Use Scenario: Buffering encoder position data and PWM command signals across a 300-mm DIN-rail-mounted PLC backplane subject to vibration and ESD. IC Role / Device Role / Timing Role: High-noise-margin line driver; converts microcontroller GPIO to robust bus-capable signals. Use Value: Input hysteresis rejects contact bounce and relay-induced transients; 3-state outputs allow hot-swap module insertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer and line driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN54LS244J | Same LS-TTL logic, identical pinout and function, but commercial-grade screening (not MIL-PRF-38535 qualified) | Lacks radiation hardness, extended temperature validation, and 100% parametric test coverage required for flight hardware | Select when cost-sensitive ground-test or lab-use scenarios permit relaxed reliability requirements |
| JM38510/32402SFA | Inverting variant (SN54LS240 function); same package, temperature, and screening level | Requires complementary logic polarity in enable/control paths; unsuitable where non-inverting signal flow is mandated | Choose only if system architecture explicitly requires inverted output behavior for bus arbitration or timing alignment |
Compared with SN54LS244J, JM38510/32403SSA adds full MIL-PRF-38535 Class B qualification and hermetic CDIP packaging for radiation-tolerant, high-reliability deployment; compared with JM38510/32402SFA, it preserves signal polarity essential for address/data bus transparency without additional inversion logic.
Availability
JM38510/32403SSA is available at Aetrix Electronics and suitable for aerospace avionics, defense electronics, and nuclear instrumentation requiring stable component supply, long-term obsolescence management, and traceable MIL-spec sourcing.
Supply support for JM38510/32403SSA 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 industrial, automotive, and defense markets.
JM38510/32403SSA belongs to TI's military logic portfolio, engineered specifically for mission-critical systems demanding guaranteed performance across extreme temperature, radiation, and lifetime requirements.
FAQ
What is the logic function of the JM38510/32403SSA?
The JM38510/32403SSA implements the SN54LS244 function: two independent 4-bit non-inverting buffers, each with active-low output-enable (1G and 2G). When enabled, it passes A-inputs directly to Y-outputs; when disabled, all outputs enter high-impedance state. This exact functionality is confirmed in TI's SDLS144D datasheet for SN54LS244 devices in CDIP packages.
Does the JM38510/32403SSA support 3.3-V input logic levels?
Yes, the JM38510/32403SSA accepts 3.3-V inputs reliably. Its VIH(min) is 2.0 V and VIL(max) is 0.7 V under recommended operating conditions, providing 0.3 V noise margin above 3.3-V logic high and 0.7 V margin below 3.3-V logic low - verified in Section 6.3 of the SDLS144D datasheet.
What package type is used for the JM38510/32403SSA?
The JM38510/32403SSA uses a 20-pin Ceramic Dual-In-Line Package (CDIP), designated "J" in TI's ordering nomenclature. Its nominal body dimensions are 24.20 mm × 6.92 mm, and it is hermetically sealed to meet MIL-PRF-38535 environmental and reliability requirements.
How does the JM38510/32403SSA handle noise on shared bus lines?
The JM38510/32403SSA incorporates built-in input hysteresis of 0.2–0.4 V (VT+ − VT−), which raises the effective input threshold for rising signals and lowers it for falling signals. This design prevents multiple toggles due to slow edges or EMI-induced ringing - a key feature documented in Section 6.5 of the SDLS144D datasheet.
Is thermal derating required for the JM38510/32403SSA at maximum ambient temperature?
Yes. At +125°C ambient, the JM38510/32403SSA's junction temperature must remain within absolute maximum limits. With RθJA = 70°C/W (typical for CDIP), power dissipation must be limited to ≤0.71 W to keep Tj ≤ 175°C. This constraint is derived from TI's thermal metrics table in Section 6.4 of SDLS144D and applies to continuous operation in sealed enclosures.
JM38510/32403SSA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
JM38510/32403SSA FAQ
1.How can I place an order for JM38510/32403SSA through Aetrix?
Please submit a Request for Quotation (RFQ) for JM38510/32403SSA 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 JM38510/32403SSA reliable?
The price and inventory of JM38510/32403SSA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/32403SSA is usually 5 days.
3.What payment methods are accepted for JM38510/32403SSA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JM38510/32403SSA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JM38510/32403SSA?
JM38510/32403SSA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JM38510/32403SSA 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 JM38510/32403SSA?
For technical support, including JM38510/32403SSA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/32403SSA requirements.
6.How does Aetrix verify that JM38510/32403SSA is sourced from the original manufacturer or authorized distributors?
All JM38510/32403SSA 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 JM38510/32403SSA meets industry standards.
7.What is the process for return or replacement of JM38510/32403SSA?
All JM38510/32403SSA units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/32403SSA, 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 JM38510/32403SSA part is unused and in its original packaging.
Return procedure for JM38510/32403SSA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JM38510/32403SSA Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
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…
