My Inquiry
My Account
Texas Instruments M38510/65802BEA
- Part No.:
- M38510/65802BEA
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-CDIP (0.300", 7.62mm)
- Datasheet:
-
M38510/65802BEA.pdf
- Description:
- 3-LINE TO 8-LINE DECODERS/DEMULT
- Quantity:
- Payment:
- Shipping:
Inventory:3,769
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
M38510/65802BEA from Texas Instruments is a military-grade 3-line to 8-line decoder/demultiplexer in CDIP-16 package, operating across –55°C to +125°C, with 15 ns typical propagation delay at 6 V, ±4-mA output drive, and active-low outputs enabling high-speed memory decoding and data routing in radiation-tolerant systems.
For engineers reviewing the M38510/65802BEA datasheet, M38510/65802BEA pinout, M38510/65802BEA application, or M38510/65802BEA equivalent, this device serves as a drop-in replacement for SN54HC138J in defense avionics, spaceflight payload controllers, and hardened industrial control backplanes requiring MIL-PRF-38535 Class B compliance and extended temperature operation.
Technical Context
The M38510/65802BEA implements a 3-bit binary input (A, B, C) to select one of eight active-low outputs (Y0–Y7), with three enable inputs: one active-high (G1) and two active-low (G2A, G2B). All enables must be asserted for output activation - any disabled enable forces all outputs high.
It uses silicon-gate CMOS technology with balanced output drive, supports cascading without external inverters via enable chaining, and features low input current (≤1 µA max) and low quiescent ICC (≤160 µA at VCC = 6 V), making it suitable for low-power, high-reliability decoding in mission-critical timing paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | 3-to-8 line decoder / demultiplexer with active-low outputs and triple enable logic |
| Supply Voltage | 2 V to 6 V - compatible with legacy 5-V TTL and modern 3.3-V mixed-signal systems |
| Propagation Delay | 15 ns typical (VCC = 6 V) - enables sub-67-MHz clock domain interfacing without pipeline stalls |
| Output Drive | ±4 mA at 5 V - sufficient to directly drive LSTTL loads or interface with discrete FET gates |
| Operating Temperature | –55°C to +125°C - qualified per MIL-PRF-38535 for aerospace and defense embedded systems |
| Package | CDIP-16 (J package), 21.34 mm × 6.92 mm - through-hole, hermetically sealed, leaded for high-reliability solder joints |
| Input Leakage | ±1000 nA max - ensures stable enable state under high-impedance biasing in low-power sleep modes |
Pinout & Package
CDIP-16 (J) package: 16-pin ceramic dual in-line, hermetically sealed, with 0.3-inch row spacing and 0.1-inch pin pitch. Designed for wave soldering and high-vibration environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | Select input A (LSB) | Binary address bit 0 - determines output selection when all enables are active |
| 2 (B) | Select input B | Binary address bit 1 - used with A and C to decode full 3-bit address space |
| 3 (C) | Select input C (MSB) | Binary address bit 2 - completes 3-bit input vector for Y0–Y7 mapping |
| 4 (G2A) | Active-low enable A | Primary enable path; pulled low to activate decoder function when G2B and G1 are also asserted |
| 5 (G2B) | Active-low enable B | Secondary enable; both G2A and G2B must be low for outputs to respond to A/B/C |
| 6 (G1) | Active-high enable | Third enable; must be high to permit decoding - allows hierarchical enable tree construction |
| 7 (Y7) | Output 7 (MSB) | Active-low decoded output - sinks current when selected; used for highest-addressed peripheral enable |
| 8 (GND) | Ground reference | Signal and power return path - requires low-inductance connection to minimize ground bounce |
| 9 (Y6) | Output 6 | Active-low output - drives column select in LED matrix or chip-select for memory bank #6 |
| 10 (Y5) | Output 5 | Active-low output - enables peripheral addressing in multi-drop bus arbitration logic |
| 11 (Y4) | Output 4 | Active-low output - used in interrupt vector decoding for priority-encoded IRQ lines |
| 12 (Y3) | Output 3 | Active-low output - selects analog mux channel or FPGA configuration bank |
| 13 (Y2) | Output 2 | Active-low output - controls power rail sequencing in multi-rail PMIC subsystems |
| 14 (Y1) | Output 1 | Active-low output - triggers watchdog reset pulse or status LED driver |
| 15 (Y0) | Output 0 (LSB) | Active-low output - commonly used for boot device selection or primary I/O expander enable |
| 16 (VCC) | Positive supply | CMOS core voltage rail - requires local 0.1-µF ceramic bypass capacitor placed within 5 mm |
Key Features
| Feature | Design Value |
|---|---|
| Triple enable architecture | Enables hierarchical decoding trees up to 24 lines without external inverters - reduces gate count and board area |
| Active-low outputs | Directly interfaces with N-channel MOSFETs or open-collector logic - eliminates need for level-shifting in sink-driven systems |
| Low ICC (160 µA max) | Minimizes standby power in battery-backed or thermally constrained military platforms |
| Wide VCC range (2–6 V) | Supports interoperability across legacy 5-V and modern 3.3-V subsystems without level translators |
| MIL-PRF-38535 Class B | Guarantees screening, testing, and traceability for flight-critical applications - includes burn-in, temperature cycling, and lot acceptance tests |
Applications
| Avionics Data Bus Decoder | Satellite Payload Controller |
|---|---|
Use Scenario: Decoding ARINC 429 or MIL-STD-1553 bus address fields to select discrete transceiver channels or memory-mapped I/O registers. IC Role / Device Role / Timing Role: Address decoder in real-time deterministic communication subsystem - resolves 3-bit command field into dedicated enable lines for protocol engines. Use Value: 15 ns propagation delay ensures no timing violation in 20-MHz bus cycles; CDIP-16 package withstands launch vibration and thermal shock. |
Use Scenario: Selecting between redundant sensor inputs (star tracker, gyro, sun sensor) in attitude determination and control system (ADCS). IC Role / Device Role / Timing Role: Fault-isolating multiplexer controller - routes sensor data streams based on health monitor output and voting logic. Use Value: –55°C to +125°C operation maintains functionality during orbital thermal cycling; MIL-qualified reliability prevents single-point failure. |
| Hardened Industrial PLC Backplane | Nuclear Instrumentation Rack |
Use Scenario: Enabling modular I/O cards (analog input, digital output, motion control) on a DIN-rail mounted programmable logic controller chassis. IC Role / Device Role / Timing Role: Backplane address decoder - translates CPU address bus bits into slot-select signals for hot-swappable modules. Use Value: ±4-mA drive capability directly activates optocoupler inputs on each card; CDIP hermetic seal resists industrial contaminants and humidity. |
Use Scenario: Routing neutron detector pulse signals to specific signal conditioning channels in reactor monitoring instrumentation. IC Role / Device Role / Timing Role: Radiation-tolerant signal router - selects among 8 detector arrays using hardened enable logic to avoid latch-up in high-flux zones. Use Value: Low input leakage (<1 µA) prevents false triggering from ionizing radiation-induced charge accumulation; Class B screening validates total ionizing dose (TID) tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-to-8 decoder applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN54HC138J | Same CDIP-16 package and pinout; identical electrical specs but commercial-grade screening (no MIL-PRF-38535 qualification) | Lacks radiation hardness assurance and extended temperature validation - unsuitable for flight or nuclear environments | Select only for ground-test fixtures or non-mission-critical prototypes where cost is prioritized over qualification |
| SNJ54HC138J | Identical die and CDIP-16 package; screened to JANTXV level (MIL-PRF-38535 Class V), higher reliability than M38510/65802BEA but same temp range | Higher screening rigor increases cost and lead time; used where single-event effect (SEE) immunity is required beyond Class B | Choose when system-level radiation testing mandates JANTXV-level confidence - e.g., geosynchronous orbit payloads |
Compared with SN54HC138J, M38510/65802BEA adds MIL-PRF-38535 Class B qualification and full lot traceability, while SNJ54HC138J provides JANTXV-level screening for enhanced SEE resistance - all share identical pinout, timing, and drive strength.
Availability
M38510/65802BEA is available at Aetrix Electronics and suitable for avionics data bus decoding, satellite payload control, hardened industrial PLC backplanes, and nuclear instrumentation racks requiring stable component supply across extended temperature and radiation-exposed environments.
Supply support for M38510/65802BEA 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 ICs for aerospace, defense, and industrial markets.
M38510/65802BEA belongs to TI's military logic family, designed specifically for high-speed, radiation-tolerant decoding in mission-critical systems where long-term reliability and environmental resilience are mandatory.
FAQ
What is the operating temperature range of the M38510/65802BEA?
The M38510/65802BEA operates from –55°C to +125°C, fully qualified per MIL-PRF-38535 Class B for extreme environmental conditions found in aerospace, defense, and nuclear applications. This range is verified through temperature cycling, burn-in, and parametric testing across the full span - not extrapolated or derated.
Is the M38510/65802BEA pin-compatible with commercial SN54HC138J devices?
Yes, the M38510/65802BEA uses the identical CDIP-16 (J) package and pinout as SN54HC138J, including matching pin functions for A, B, C, G1, G2A, G2B, Y0–Y7, VCC, and GND. No PCB layout changes are required when upgrading from SN54HC138J to M38510/65802BEA.
Does the M38510/65802BEA support cascading for larger decoding schemes?
Yes, the M38510/65802BEA supports seamless cascading using its three enable inputs: G1 (active-high), G2A and G2B (both active-low). By connecting outputs of one device to enables of another, up to 24-line decoding is possible without external inverters - a feature confirmed in TI's SCLS107G datasheet Section 8.3.
What is the maximum output drive capability of the M38510/65802BEA?
The M38510/65802BEA delivers ±4 mA output drive at 5 V, as specified in the "Electrical Characteristics: SN54HC138" section of the TI datasheet. This allows direct interface with LSTTL loads, discrete MOSFET gates, or optocouplers without buffer stages - validated across the full –55°C to +125°C range.
How does the M38510/65802BEA differ from the SN74HC138 series?
The M38510/65802BEA is the military-specification version of the SN74HC138, differing in screening (MIL-PRF-38535 Class B), temperature range (–55°C to +125°C vs –40°C to +85°C), packaging (hermetic CDIP vs plastic SOIC/SSOP), and reliability testing - not in logic function, pinout, or basic electrical parameters.
M38510/65802BEA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 54HC
- Package/Case:
- 16-CDIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Decoder/Demultiplexer
- Circuit:
- 1 x 3:8
- Independent Circuits:
- 1
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-CDIP
M38510/65802BEA FAQ
1.How can I place an order for M38510/65802BEA through Aetrix?
Please submit a Request for Quotation (RFQ) for M38510/65802BEA 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 M38510/65802BEA reliable?
The price and inventory of M38510/65802BEA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M38510/65802BEA is usually 5 days.
3.What payment methods are accepted for M38510/65802BEA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M38510/65802BEA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M38510/65802BEA?
M38510/65802BEA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M38510/65802BEA 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 M38510/65802BEA?
For technical support, including M38510/65802BEA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M38510/65802BEA requirements.
6.How does Aetrix verify that M38510/65802BEA is sourced from the original manufacturer or authorized distributors?
All M38510/65802BEA 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 M38510/65802BEA meets industry standards.
7.What is the process for return or replacement of M38510/65802BEA?
All M38510/65802BEA units undergo pre-shipment inspection (PSI). If there is an issue with M38510/65802BEA, 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 M38510/65802BEA part is unused and in its original packaging.
Return procedure for M38510/65802BEA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M38510/65802BEA Tags
-
SN74HC138DR
Texas Instruments
-
TC7SB3157CFU,LF(CT
Toshiba Semiconductor and Storage
-
74CBTLV3257PW,118
Nexperia USA Inc.
-
SN74CBTLV3257PWR
Texas Instruments
-
74CBTLV3257GUX
Nexperia USA Inc.
-
74HC154BQ,118
Nexperia USA Inc.
-
P3S0200GMX
NXP USA Inc.
-
SN74CB3Q3245PWR
Texas Instruments
-
SN74CB3Q3257RGYR
Texas Instruments
-
TCA9543APWR
Texas Instruments
-
TCA9546APWR
Texas Instruments
-
SN74HC138N
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…
