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Texas Instruments JM38510/33701B2A
- Part No.:
- JM38510/33701B2A
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- -
- Datasheet:
-
JM38510/33701B2A.pdf
- Description:
- 54F138 3-LINE TO 8-LINE DECODERS
- Quantity:
- Payment:
- Shipping:
Inventory:106
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Product details
Overview
JM38510/33701B2A from Texas Instruments is a military-grade 3-line-to-8-line decoder/demultiplexer in a 20-pin LCCC package, featuring three enable inputs (G1, G2A, G2B), active-low outputs, and propagation delays as low as 2.7 ns at 5 V. It operates across –55°C to 125°C and is designed for high-speed memory decoding and data routing in aerospace and defense systems.
For engineers reviewing the JM38510/33701B2A datasheet, JM38510/33701B2A pinout, JM38510/33701B2A application, or JM38510/33701B2A equivalent, key selection criteria include military temperature range compliance, dual-enable logic architecture, output drive capability (20 mA sink), propagation delay symmetry across select and enable paths, and LCCC hermetic packaging for harsh-environment reliability.
Technical Context
The JM38510/33701B2A implements positive-logic decoding with two active-low (G2A, G2B) and one active-high (G1) enable input, enabling flexible cascading without external inverters - e.g., a 24-line decoder requires no external logic. Its internal architecture routes binary-select inputs A, B, C to eight mutually exclusive active-low outputs (Y0–Y7) only when all enables are asserted.
Timing behavior is tightly specified across the full military temperature range: tPLH/tPHL from select inputs (A/B/C) to outputs is 2.7–12 ns; from enable inputs (G1, G2A, G2B) to outputs is 2.2–12.5 ns. Output voltage levels meet VOH ≥ 2.5 V (IOH = –1 mA) and VOL ≤ 0.5 V (IOL = 20 mA) at VCC = 4.5–5.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | 3-line-to-8-line decoder/demultiplexer with three enable inputs |
| Operating Temperature | –55°C to 125°C - qualified for extended military and space applications |
| Propagation Delay | 2.7 ns min (tPLH from G2A/G2B to Y) - enables sub-10 ns system-level decode timing |
| Output Drive | 20 mA sink per output - supports direct TTL fanout and termination into 50 Ω loads |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V logic rails and margin for voltage droop |
| Input Logic Levels | VIL ≤ 0.8 V, VIH ≥ 2.0 V - ensures robust noise immunity in noisy avionics environments |
| Package | 20-pin Ceramic Leadless Chip Carrier (LCCC, FK drawing) - hermetically sealed, leadless, MIL-STD-883 compliant |
Pinout & Package
Package: 20-pin Ceramic Leadless Chip Carrier (LCCC), FK package drawing, hermetically sealed, surface-mount, no leads - designed for high-reliability, high-vibration, and vacuum-compatible mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Binary Select Inputs A, B, C and Enables G1, G2A, G2B | A (pin 3), B (pin 2), C (pin 1); G1 (pin 4), G2A (pin 5), G2B (pin 6) - define decode address and activation state |
| 9, 10, 11, 12, 13, 14, 15, 16 | Active-Low Outputs Y0–Y7 | Y0 (pin 9), Y1 (pin 10), ..., Y7 (pin 16) - decoded outputs asserted low when enabled and address matches |
| 17 | VCC | Positive supply (4.5–5.5 V) - powers internal TTL circuitry |
| 18 | GND | Ground reference - return path for all I/O and supply currents |
| 19, 20 | No Internal Connection (NC) | Unbonded pads - no electrical function; must remain unconnected per MIL-PRF-38535 |
Key Features
| Feature | Design Value |
|---|---|
| Triple Enable Architecture | Two active-low (G2A, G2B) + one active-high (G1) enables allow hierarchical decoding without external inverters - reduces board area and signal integrity risk |
| Military Temperature Range | –55°C to 125°C operation verified per MIL-STD-883 Method 1010 - eliminates derating concerns in jet engine bays or satellite thermal cycles |
| Low Skew Enable Paths | tPHL/tPLH from G1, G2A, G2B to outputs differ by ≤ 0.5 ns - ensures deterministic cascaded timing across multi-stage decode trees |
| LCCC Hermetic Packaging | 20-pin FK ceramic package with glass-sealed lid - provides moisture resistance, outgassing control, and mechanical stability for spaceflight and missile guidance |
| High-Speed TTL Compatibility | Designed for F-series TTL logic families - interfaces directly with SN54F/74F registers, latches, and memories without level-shifting |
Applications
| Avionics Data Routing | Tactical Radar Memory Decoding |
|---|---|
Use Scenario: Selecting among multiple sensor data buffers in a fly-by-wire flight control computer under EMI-heavy conditions. IC Role / Device Role / Timing Role: Decoder enabling time-critical access to discrete memory banks holding servo command tables and fault history logs. Use Value: Sub-8 ns propagation delay ensures decode latency remains below 1% of 1 µs control loop cycle, preserving real-time determinism. | Use Scenario: Addressing high-speed SRAM arrays in a pulse-Doppler radar signal processor operating in extended temperature environments. IC Role / Device Role / Timing Role: Primary memory decoder coordinating bank selection for ADC sample storage and FFT coefficient lookup tables. Use Value: Guaranteed operation at 125°C allows placement near RF power stages without thermal throttling or derating. |
| Missile Guidance System I/O Expansion | Satellite Onboard Computer Peripherals |
Use Scenario: Demultiplexing command signals from a central controller to 8 independent actuator driver modules in a solid-fuel missile. IC Role / Device Role / Timing Role: Demultiplexer using G1 as data input and A/B/C as channel address - enables single-wire command distribution. Use Value: Active-low outputs interface directly with discrete MOSFET gate drivers requiring negative-enable logic, eliminating level translators. | Use Scenario: Selecting between redundant telemetry transmitters, attitude sensors, and power management ICs in a CubeSat OBC. IC Role / Device Role / Timing Role: System-level resource selector managing shared bus arbitration and peripheral power sequencing. Use Value: LCCC hermeticity prevents moisture-induced parametric shift during orbital thermal cycling and vacuum exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar decoder/demultiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SNJ54F138FK | Identical electrical specs and LCCC package; same 20-pin FK footprint and MIL-PRF-38535 Class K screening. | No functional difference - both are QML-38535 qualified F138 variants in FK package. | Select SNJ54F138FK if sourcing through legacy DLA contracts or when cross-reference to 5962-9758201Q2A is required. |
| JM38510/33701BEA | Same logic function and temperature range, but in 16-pin CDIP (J package) - different pin count, through-hole mounting, non-hermetic construction. | Used where manual assembly, socketing, or legacy board compatibility is prioritized over vibration resistance or hermeticity. | Choose JM38510/33701BEA only for retrofit or repair of existing J-package designs; not suitable for new high-reliability SMT layouts. |
Compared with SNJ54F138FK, JM38510/33701B2A shares identical performance and qualification but differs in part numbering convention and procurement channel; compared with JM38510/33701BEA, it trades through-hole serviceability for superior thermal cycling endurance and board-level shock resistance via LCCC packaging.
Availability
JM38510/33701B2A is available at Aetrix Electronics and suitable for avionics data routing, tactical radar memory decoding, missile guidance system I/O expansion, and satellite onboard computer peripherals requiring stable component supply under extended temperature and high-reliability constraints.
Supply support for JM38510/33701B2A 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 company founded in 1930, specializing in analog, embedded processing, and high-reliability military/aerospace components with decades of QML qualification experience.
JM38510/33701B2A belongs to TI's 54F logic family - engineered specifically for high-speed, radiation-tolerant, and temperature-extended applications in defense electronics where failure is not an option.
FAQ
What is the operating temperature range for JM38510/33701B2A?
JM38510/33701B2A is fully characterized and qualified for continuous operation from –55°C to 125°C per MIL-STD-883 Method 1010. This range is verified across all electrical parameters including propagation delay, output drive, and input thresholds - making JM38510/33701B2A suitable for jet engine compartments, space vehicle thermal blankets, and desert-deployed electronic warfare systems without thermal derating.
Does JM38510/33701B2A support demultiplexing functionality?
Yes, JM38510/33701B2A supports demultiplexing: its G1 enable input can be used as a data line while A, B, and C serve as channel selectors. When G1 is driven with serial data and A/B/C configure the output path, JM38510/33701B2A routes that signal to exactly one of eight active-low outputs - enabling compact, low-latency 1-to-8 demux without additional logic gates.
What package type is used for JM38510/33701B2A?
JM38510/33701B2A uses a 20-pin Ceramic Leadless Chip Carrier (LCCC) package per drawing FK. This hermetically sealed, surface-mount package features metallized edges for solder reflow attachment, zero leads to prevent flex fatigue, and compliance with MIL-PRF-38535 Class K reliability requirements - critical for launch vibration and thermal vacuum environments.
How does the enable structure of JM38510/33701B2A simplify cascading?
JM38510/33701B2A incorporates two active-low (G2A, G2B) and one active-high (G1) enable inputs, allowing direct connection of outputs from one device to enables of downstream devices without external inverters. For example, a 24-line decoder can be built using three JM38510/33701B2A units with zero added logic - reducing BOM count, PCB area, and signal path skew.
Is JM38510/33701B2A pin-compatible with commercial SN74F138 variants?
No - JM38510/33701B2A uses a 20-pin LCCC (FK) package, whereas commercial SN74F138 variants use 16-pin packages (SOIC-D, PDIP-N, or CDIP-J). The pin count, layout, and terminal mapping differ fundamentally; no PCB layout reuse is possible between JM38510/33701B2A and SN74F138. Functional equivalence exists, but mechanical and routing compatibility does not.
JM38510/33701B2A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Circuit:
- -
- Independent Circuits:
- -
- Current - Output High, Low:
- -
- Voltage Supply Source:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
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- Supplier Device Package:
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JM38510/33701B2A FAQ
1.How can I place an order for JM38510/33701B2A through Aetrix?
Please submit a Request for Quotation (RFQ) for JM38510/33701B2A 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 JM38510/33701B2A reliable?
The price and inventory of JM38510/33701B2A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/33701B2A is usually 5 days.
3.What payment methods are accepted for JM38510/33701B2A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JM38510/33701B2A transactions.
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4.How is shipping managed for JM38510/33701B2A?
JM38510/33701B2A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JM38510/33701B2A 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 JM38510/33701B2A?
For technical support, including JM38510/33701B2A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/33701B2A requirements.
6.How does Aetrix verify that JM38510/33701B2A is sourced from the original manufacturer or authorized distributors?
All JM38510/33701B2A 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 JM38510/33701B2A meets industry standards.
7.What is the process for return or replacement of JM38510/33701B2A?
All JM38510/33701B2A units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/33701B2A, 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 JM38510/33701B2A part is unused and in its original packaging.
Return procedure for JM38510/33701B2A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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