My Inquiry
My Account
Texas Instruments SNJ54HCT541J
- Part No.:
- SNJ54HCT541J
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
SNJ54HCT541J.pdf
- Description:
- 54HCT541 OCTAL BUFFERS AND LINE
- Quantity:
- Payment:
- Shipping:
Inventory:163
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SNJ54HCT541J from Texas Instruments is a military-grade octal buffer and line driver with 3-state outputs, designed for high-reliability bus interface applications in aerospace and defense systems. It operates from 4.5 V to 5.5 V, delivers ±6 mA output drive at 5 V, exhibits typical propagation delay of 12 ns (VCC = 5.5 V), and supports full industrial temperature range (–55°C to +125°C) in CDIP package.
For engineers reviewing the SNJ54HCT541J datasheet, SNJ54HCT541J pinout, SNJ54HCT541J application, or SNJ54HCT541J equivalent, this device is selected for robust 3-state bus buffering where TTL-compatible inputs, low ICC (80 µA max), and data flow-through pinout are required in harsh-environment PCB layouts.
Technical Context
The SNJ54HCT541J implements eight independent non-inverting buffers, each with dual 3-state enable inputs (OE1 and OE2) wired as a 2-input NOR gate - asserting either OE high places all Y outputs in high-impedance state. Its HCT logic family ensures TTL-voltage compatibility while maintaining CMOS power efficiency.
Designed as a performance- and pinout-compatible upgrade to 'HC240-series devices, it features opposite-side I/O placement (inputs on one side, outputs on the other) to simplify trace routing and reduce crosstalk in dense backplane or avionics board designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V logic rails and tolerant of supply ripple in ruggedized power domains. |
| Propagation Delay (tpd) | 12 ns typ @ 5.5 V - enables reliable timing in 40+ MHz bus cycles with margin for setup/hold. |
| Output Drive | ±6 mA @ 5 V - sufficient to directly drive 15 LSTTL loads without external buffering. |
| Input Compatibility | TTL-voltage compatible - accepts standard 0.8 V / 2.0 V logic thresholds, eliminating level-shifting in mixed-logic systems. |
| Quiescent Current (ICC) | 80 µA max - minimizes standby power in always-on mission-critical subsystems. |
| Operating Temperature | –55°C to +125°C - qualified for extended-range operation in space, airborne, and ground vehicle electronics. |
| 3-State Enable Logic | NOR-gated OE1/OE2 - single-pin disable control possible; both enables must be low for output assertion. |
Pinout & Package
SNJ54HCT541J is housed in a 20-pin Ceramic Dual In-line Package (CDIP) with 26.92 mm × 6.92 mm body size, hermetically sealed for moisture resistance and thermal stability in extreme environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Inputs (A1–A8) | True logic inputs accepting TTL-compatible voltage levels; routed to opposite side of package from outputs for clean signal layer separation. |
| 9, 10 | Output Enables (OE1, OE2) | NOR-configured active-low enables - either high forces all Y outputs into high-Z state. |
| 11, 13, 14, 15, 16, 17, 18, 20 | Outputs (Y1–Y8) | Non-inverting buffered outputs with 3-state capability; capable of ±6 mA sink/source at 5 V. |
| 12 | GND | Ground reference for logic and power return; requires low-inductance connection to minimize noise coupling. |
| 19 | VCC | Positive supply rail (4.5–5.5 V); requires local 0.1 µF ceramic bypass capacitor per device per TI layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Data flow-through pinout | Inputs (A1–A8) on left side, outputs (Y1–Y8) on right side - reduces layer transitions and stub length in high-speed bus routing. |
| High-current 3-state outputs | ±6 mA drive strength at 5 V - eliminates need for external bus transceivers when interfacing with legacy LSTTL loads. |
| TTL-voltage compatible inputs | VIH = 2.0 V min, VIL = 0.8 V max - interoperates seamlessly with 74LS, 74ALS, and other TTL families without level shifters. |
| Low input current | ±1 µA max - prevents loading of upstream drivers and maintains signal integrity across long fan-out chains. |
| Military temperature rating | –55°C to +125°C operation - validated for use in uncontrolled ambient environments including engine bays and satellite payloads. |
Applications
| Aerospace Data Bus Interface | Avionics Sensor Signal Conditioning |
|---|---|
Use Scenario: Isolating and buffering ARINC 429 or MIL-STD-1553B data lines between flight computers and remote I/O modules. IC Role / Device Role / Timing Role: Octal non-inverting buffer with 3-state control enabling bidirectional bus arbitration and hot-swap isolation. Use Value: Ensures signal integrity over 2 m cable runs while supporting –55°C to +125°C operational envelope required for UAV and satellite telemetry links. | Use Scenario: Driving analog-to-digital converter (ADC) input multiplexers and sensor excitation circuits in inertial measurement units (IMUs). IC Role / Device Role / Timing Role: Low-noise, high-drive buffer isolating precision analog front-end logic from noisy digital control buses. Use Value: ±6 mA output drive and 12 ns tpd allow synchronous sampling of multi-channel sensors without timing skew or settling degradation. |
| Defense System Backplane Buffering | Ruggedized Industrial PLC I/O Expansion |
Use Scenario: Interfacing FPGA-based processing modules with legacy VMEbus or CompactPCI peripheral cards in C4ISR systems. IC Role / Device Role / Timing Role: Octal 3-state line driver providing bus contention management and voltage-level bridging between heterogeneous logic families. Use Value: TTL-compatible inputs and CDIP hermetic packaging ensure reliability during shock/vibration testing and extended storage in field-deployed command posts. | Use Scenario: Expanding discrete I/O capacity in explosion-proof programmable logic controllers used in oil & gas refineries. IC Role / Device Role / Timing Role: High-reliability buffer enabling safe read/write access to isolated digital input/output banks under EMI-heavy plant conditions. Use Value: 80 µA max ICC reduces thermal load in sealed enclosures, while –55°C to +125°C rating supports operation near steam lines and furnace controls. |
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 |
|---|---|---|---|
| SN54HCT541J | Same CDIP-20 package, identical electrical specs, but lacks JANTXV screening and radiation tolerance documentation. | Approved for commercial/military hybrid systems but not certified for Class B spaceflight or nuclear-hardened platforms. | Select SNJ54HCT541J when full MIL-PRF-38535 Class V qualification, lot traceability, and extended burn-in are mandatory. |
| SNJ54ACT541J | Advanced CMOS (ACT) variant: faster tpd (9 ns typ), higher ICC (400 µA max), same pinout and voltage range. | Better suited for high-speed timing-critical paths but increases static power in battery-backed subsystems. | Choose SNJ54ACT541J only when propagation delay reduction outweighs quiescent current penalty and thermal constraints permit. |
Compared with SN54HCT541J and SNJ54ACT541J, SNJ54HCT541J provides the strictest process control, highest reliability screening, and lowest standby power - making it the preferred choice for life-critical avionics and space-qualified hardware where long-term parametric stability is non-negotiable.
Availability
SNJ54HCT541J is available at Aetrix Electronics and suitable for aerospace data bus interface, avionics sensor conditioning, defense system backplane buffering, and ruggedized industrial PLC I/O expansion requiring stable component supply across extended product lifecycles.
Supply support for SNJ54HCT541J 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 specializing in analog, embedded processing, and high-reliability logic solutions for industrial, automotive, and defense markets.
The SNJ54HCT541J belongs to TI's military-grade HCT logic family, engineered specifically for high-integrity bus interface applications demanding guaranteed performance across extreme temperature, radiation, and mechanical stress conditions.
FAQ
What is the maximum operating temperature range for SNJ54HCT541J?
SNJ54HCT541J is rated for continuous operation from –55°C to +125°C, meeting MIL-PRF-38535 Class V requirements for extended-temperature military and aerospace applications. This range is verified through temperature cycling, burn-in, and parametric testing per JESD22 standards, and applies to the full CDIP package configuration. The SNJ54HCT541J specification sheet confirms no derating is required within this interval.
Does SNJ54HCT541J support true or inverted output logic?
SNJ54HCT541J provides true (non-inverting) output logic - each Y output replicates its corresponding A input when enabled. This behavior is explicitly defined in the function table (Table 7-1) and functional block diagram of the official TI datasheet SCLS306E. The device does not include inversion capability; for inverting functionality, SNJ54HCT540J would be the complementary part.
What is the recommended bypass capacitor for SNJ54HCT541J?
Texas Instruments specifies a 0.1 µF ceramic capacitor placed as close as possible to the VCC pin (Pin 19) and GND (Pin 12) of SNJ54HCT541J. This value is documented in Section 8 ("Power Supply Recommendations") of the SCLS306E datasheet and is intended to suppress high-frequency noise and stabilize supply rail impedance during output switching transients.
Is SNJ54HCT541J pin-compatible with SN74HCT541N?
Yes, SNJ54HCT541J is pin-compatible with SN74HCT541N - both share identical 20-pin DIP pinout, signal assignment, and electrical interface. However, SNJ54HCT541J uses a ceramic CDIP package with military screening, while SN74HCT541N uses plastic PDIP and is commercial-grade. PCB footprints are mechanically interchangeable, but thermal and reliability profiles differ significantly.
What is the absolute maximum supply voltage for SNJ54HCT541J?
The absolute maximum supply voltage for SNJ54HCT541J is 7 V, as specified in Section 5.1 ("Absolute Maximum Ratings") of the TI datasheet SCLS306E. Operation above 5.5 V (recommended max) risks accelerated parametric drift and reduced long-term reliability, even if below the 7 V absolute limit. Designers must maintain VCC within 4.5 V–5.5 V for guaranteed functionality and lifetime compliance.
SNJ54HCT541J 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:
- -
SNJ54HCT541J FAQ
1.How can I place an order for SNJ54HCT541J through Aetrix?
Please submit a Request for Quotation (RFQ) for SNJ54HCT541J 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 SNJ54HCT541J reliable?
The price and inventory of SNJ54HCT541J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SNJ54HCT541J is usually 5 days.
3.What payment methods are accepted for SNJ54HCT541J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SNJ54HCT541J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SNJ54HCT541J?
SNJ54HCT541J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SNJ54HCT541J 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 SNJ54HCT541J?
For technical support, including SNJ54HCT541J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SNJ54HCT541J requirements.
6.How does Aetrix verify that SNJ54HCT541J is sourced from the original manufacturer or authorized distributors?
All SNJ54HCT541J 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 SNJ54HCT541J meets industry standards.
7.What is the process for return or replacement of SNJ54HCT541J?
All SNJ54HCT541J units undergo pre-shipment inspection (PSI). If there is an issue with SNJ54HCT541J, 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 SNJ54HCT541J part is unused and in its original packaging.
Return procedure for SNJ54HCT541J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SNJ54HCT541J 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…
