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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

Texas Instruments SNJ54ABT541J

Name: SNJ54ABT541J
Brand: Texas Instruments
SKU: SNJ54ABT541J
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SNJ54ABT541J

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: -

Datasheet:: SNJ54ABT541J.pdf

Description:: 54ABT541 OCTAL BUFFERS/DRIVERS W

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Product details

Overview

SNJ54ABT541J from Texas Instruments is a military-grade octal buffer/driver with 3-state outputs, designed for bus line driving and memory address register buffering in high-reliability systems. It operates across –55°C to 125°C, delivers ±32 mA high-drive outputs (IOH/IOL), features dual active-low output-enable inputs (OE1/OE2), and uses EPIC-IIB™ BiCMOS technology for low power dissipation.

For engineers reviewing the SNJ54ABT541J datasheet, SNJ54ABT541J pinout, SNJ54ABT541J application, or SNJ54ABT541J equivalent, key selection criteria include its CDIP-20 ceramic package, 5-V supply operation, 3-state control logic, latch-up immunity (>500 mA), and compatibility with legacy TTL/CMOS bus architectures requiring robust signal integrity under extreme temperature conditions.

Technical Context

The SNJ54ABT541J implements an octal noninverting buffer architecture with independent input and output banks on opposite sides of the CDIP package-optimized for PCB layout efficiency in dense backplane or memory subsystem designs. Its dual active-low OE inputs form a two-input AND gate: either OE1 or OE2 high forces all eight Y outputs into high-impedance state.

During power-up/down (VCC between 0–2.1 V), the device auto-enters high-impedance mode without external biasing. For guaranteed 3-state behavior above 2.1 V, OE pins require pullup resistors to VCC-minimum value determined by driver sink capability. Latch-up performance exceeds 500 mA per JEDEC JESD-17.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage (VCC)	4.5 V to 5.5 V - ensures compatibility with standard 5-V TTL logic rails and stable operation across military temperature range.
Output Drive (IOL / IOH)	64 mA sink / –32 mA source - enables direct interfacing with heavy-loaded buses or multiple TTL inputs without external buffers.
Propagation Delay (tPLH/tPHL)	2.6–4.2 ns at VCC = 5 V, CL = 50 pF - supports high-speed data transfer in memory address latching and bus arbitration circuits.
Input Thresholds (VIH/VIL)	2.0 V min VIH / 0.8 V max VIL - guarantees reliable recognition of TTL-level signals and noise margin against ground bounce (VOLP < 1 V).
Operating Temperature	–55°C to +125°C - qualified per MIL-PRF-38535 for deployment in avionics, defense electronics, and space-qualified systems.
Package Type	Ceramic Dual-In-Line Package (CDIP), 20-pin - hermetically sealed, leaded, through-hole mount with proven reliability in harsh environments.
Output Leakage (IOZL/IOZH)	±10 µA at VCC = 5.5 V - minimizes standby current in disabled states, critical for low-power system-level power budgeting.

Pinout & Package

Ceramic Dual-In-Line Package (CDIP), 20-pin, through-hole mount, hermetic seal, 0.3-inch body width, 0.1-inch pin pitch. Designed for high-reliability military/aerospace applications requiring long-term stability and moisture resistance.

Pin/Terminal	Circuit Role	Design Meaning
1, 2	OE1, OE2	Active-low output enable inputs - both must be low for output drivers to be active; either high disables all Y outputs.
3–10	Y1–Y8	Noninverting buffered outputs - drive external bus lines or memory address lines with high-current capability.
11–18	A1–A8	Buffer inputs - accept TTL/CMOS-compatible logic levels; placed opposite outputs to simplify PCB routing.
19	VCC	Positive supply rail - must be decoupled locally with 0.1 µF ceramic capacitor near pin for noise suppression.
12	GND	Ground reference - dedicated pin for low-impedance return path; critical for minimizing ground bounce during switching.

Key Features

Feature	Design Value
EPIC-IIB™ BiCMOS process	Reduces dynamic power consumption vs. standard bipolar TTL while retaining high-speed performance and drive strength.
High-impedance during power transition	Automatic 3-state entry when VCC is between 0–2.1 V eliminates bus contention during cold-start or brownout events.
Output ground bounce (VOLP)	< 1 V at VCC = 5 V, TA = 25°C - ensures signal integrity on shared bus lines with minimal noise coupling.
Latch-up immunity	Exceeds 500 mA per JEDEC JESD-17 - prevents destructive failure under transient overvoltage or ESD stress.
Input clamp current rating	–18 mA (VI < 0) - allows safe handling of negative transients without external protection diodes.

Applications

Memory Address Buffering	Backplane Bus Driver
Use Scenario: Driving 8-bit or wider address buses between microprocessor and SRAM/ROM in embedded military controllers. IC Role / Device Role / Timing Role: Noninverting octal buffer providing level-shifting, fanout expansion, and bus isolation during memory access cycles. Use Value: Enables clean signal propagation across long traces with 64-mA sink capability, reducing setup/hold timing violations in synchronous memory interfaces.	Use Scenario: Interfacing CPU local bus to multi-slot backplane in ruggedized test equipment or radar subsystems. IC Role / Device Role / Timing Role: Bidirectional bus driver with 3-state control, allowing shared resource arbitration via OE1/OE2 gating logic. Use Value: Prevents bus contention during hot-swap or partial system reset using automatic high-Z on power ramp, supporting fault-tolerant architecture.
Avionics Data Acquisition Interface	Tactical Radio Control Logic
Use Scenario: Conditioning sensor address/data lines in flight control computers operating at –55°C to +125°C ambient. IC Role / Device Role / Timing Role: Temperature-hardened buffer isolating ADC/DAC control registers from noisy digital subsystems. Use Value: Maintains sub-5 ns propagation delay and <1 V ground bounce across full military temperature range, preserving timing margins in real-time sampling loops.	Use Scenario: Enabling/disabling RF module configuration registers in encrypted HF/VHF radios subject to vibration and thermal cycling. IC Role / Device Role / Timing Role: Octal 3-state driver controlled by FPGA GPIO, managing parallel register writes to transceiver ICs. Use Value: Ceramic DIP package withstands mechanical shock and humidity exposure; dual OE inputs allow hierarchical enable sequencing for power domain control.

Memory Address Buffering

Backplane Bus Driver

Use Scenario: Driving 8-bit or wider address buses between microprocessor and SRAM/ROM in embedded military controllers.

IC Role / Device Role / Timing Role: Noninverting octal buffer providing level-shifting, fanout expansion, and bus isolation during memory access cycles.

Use Value: Enables clean signal propagation across long traces with 64-mA sink capability, reducing setup/hold timing violations in synchronous memory interfaces.

Use Scenario: Interfacing CPU local bus to multi-slot backplane in ruggedized test equipment or radar subsystems.

IC Role / Device Role / Timing Role: Bidirectional bus driver with 3-state control, allowing shared resource arbitration via OE1/OE2 gating logic.

Use Value: Prevents bus contention during hot-swap or partial system reset using automatic high-Z on power ramp, supporting fault-tolerant architecture.

Avionics Data Acquisition Interface

Tactical Radio Control Logic

Use Scenario: Conditioning sensor address/data lines in flight control computers operating at –55°C to +125°C ambient.

IC Role / Device Role / Timing Role: Temperature-hardened buffer isolating ADC/DAC control registers from noisy digital subsystems.

Use Value: Maintains sub-5 ns propagation delay and <1 V ground bounce across full military temperature range, preserving timing margins in real-time sampling loops.

Use Scenario: Enabling/disabling RF module configuration registers in encrypted HF/VHF radios subject to vibration and thermal cycling.

IC Role / Device Role / Timing Role: Octal 3-state driver controlled by FPGA GPIO, managing parallel register writes to transceiver ICs.

Use Value: Ceramic DIP package withstands mechanical shock and humidity exposure; dual OE inputs allow hierarchical enable sequencing for power domain control.

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
SNJ54ABT540J	Inverting output logic (Y = A̅) vs. noninverting (Y = A) in SNJ54ABT541J; identical pinout, specs, and CDIP-20 package.	Suitable where signal polarity inversion is required in address/data paths-e.g., complementing memory chip-select logic.	Select SNJ54ABT540J only if inverting function is explicitly needed; otherwise SNJ54ABT541J preserves signal phase.
SNJ54ACT541J	Advanced CMOS (ACT) process: lower ICC (250 µA max vs. 30 mA for SNJ54ABT541J), but reduced IOL (24 mA vs. 64 mA) and no EPIC-IIB power optimization.	Better for ultra-low static power systems where drive strength is secondary; not recommended for heavy bus loading or high-noise environments.	Choose SNJ54ACT541J for battery-backed subsystems with light loads; retain SNJ54ABT541J for high-drive, low-ground-bounce requirements.

Compared with SNJ54ABT541J, SNJ54ABT540J provides identical drive and timing but inverted logic-ideal for complementary bus design-while SNJ54ACT541J trades drive strength and noise immunity for lower quiescent current, making it suitable only for low-load, low-power contexts.

Availability

SNJ54ABT541J is available at Aetrix Electronics and suitable for avionics, defense computing, and industrial control systems requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for SNJ54ABT541J 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, aerospace, and defense markets.

The SNJ54ABT541J belongs to TI's military-grade ABT logic family, engineered for extreme-environment digital interfacing-emphasizing latch-up immunity, wide-temperature operation, and robust 3-state bus control in mission-critical systems.

FAQ

What is the operating temperature range of the SNJ54ABT541J?

The SNJ54ABT541J is characterized for operation from –55°C to +125°C, meeting MIL-PRF-38535 requirements for military and aerospace applications. This extended range ensures functional reliability in engine bays, avionics bays, and space-constrained outdoor enclosures where thermal extremes are routine. The SNJ54ABT541J maintains specified electrical performance-including propagation delay and output drive-across this full range without derating.

How does the 3-state enable logic work on the SNJ54ABT541J?

The SNJ54ABT541J uses two active-low output-enable inputs (OE1 and OE2) configured as a two-input AND gate: if either OE1 or OE2 is high, all eight Y outputs enter high-impedance state. Both OE1 and OE2 must be low for normal buffered operation. This dual-control scheme allows hierarchical bus arbitration-e.g., OE1 tied to system-level enable, OE2 to local peripheral select-giving designers flexible control over bus access timing in the SNJ54ABT541J.

Is the SNJ54ABT541J RoHS compliant?

No, the SNJ54ABT541J uses SnPb (tin-lead) lead finish and is not RoHS compliant. It is manufactured in a CDIP ceramic package with leaded terminations intended for high-reliability military applications where solder joint integrity under thermal cycling takes precedence over environmental compliance. For RoHS-compliant alternatives, consider commercial-grade SN74ABT541B variants in SOIC or TSSOP packages-but note their –40°C to +85°C rating and different qualification basis.

What is the maximum output current the SNJ54ABT541J can sink or source?

The SNJ54ABT541J delivers up to 64 mA sink current (IOL) and –32 mA source current (IOH) per output at VCC = 5 V and TA = 25°C. These values are guaranteed across the full military temperature range. This high drive strength allows the SNJ54ABT541J to directly drive multiple TTL inputs, terminate unterminated transmission lines, or interface with legacy peripherals without external buffer stages-reducing BOM count and board area.

Can the SNJ54ABT541J be used with 3.3-V logic systems?

The SNJ54ABT541J is specified for 4.5–5.5 V operation and is not designed for direct 3.3-V supply use. While its inputs accept 3.3-V logic-high signals (VIH = 2.0 V min), applying VCC = 3.3 V violates the absolute minimum supply rating and risks undefined output behavior, increased propagation delay, and potential latch-up. For 3.3-V systems, TI recommends SN74LVC541A or SN74ALVC541-both 3.3-V compatible, with similar functionality but different voltage domains than the SNJ54ABT541J.

SNJ54ABT541J 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:: -

SNJ54ABT541J FAQ

1.How can I place an order for SNJ54ABT541J through Aetrix?

Please submit a Request for Quotation (RFQ) for SNJ54ABT541J 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 SNJ54ABT541J reliable?

The price and inventory of SNJ54ABT541J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SNJ54ABT541J is usually 5 days.

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SNJ54ABT541J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SNJ54ABT541J 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 SNJ54ABT541J?

For technical support, including SNJ54ABT541J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SNJ54ABT541J requirements.

6.How does Aetrix verify that SNJ54ABT541J is sourced from the original manufacturer or authorized distributors?

All SNJ54ABT541J 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 SNJ54ABT541J meets industry standards.

7.What is the process for return or replacement of SNJ54ABT541J?

All SNJ54ABT541J units undergo pre-shipment inspection (PSI). If there is an issue with SNJ54ABT541J, 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 SNJ54ABT541J part is unused and in its original packaging.

Return procedure for SNJ54ABT541J:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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