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Texas Instruments SNJ54HC365J
- Part No.:
- SNJ54HC365J
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
SNJ54HC365J.pdf
- Description:
- 54HC365 HEX BUS DRIVERS WITH 3-S
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Inventory:2,118
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Product details
Overview
SNJ54HC365J from Texas Instruments is a military-grade hex buffer and line driver IC with 3-state outputs, operating across 2 V to 6 V supply, delivering ±6-mA output drive at 5 V, 10 ns typical propagation delay, and high-current bus-driving capability for memory address registers and data buses in aerospace and defense systems.
For engineers reviewing the SNJ54HC365J datasheet, SNJ54HC365J pinout, SNJ54HC365J application, or SNJ54HC365J equivalent, this page delivers verified functional modes, absolute maximum ratings, switching characteristics under 50 pF load, thermal metrics for CDIP packaging, and precise selection guidance against comparable logic drivers.
Technical Context
The SNJ54HC365J implements six independent noninverting buffers, each controlled by dual 3-state enable inputs (OE1 and OE2) - both must be low for active output; either high forces high-impedance state. Its CMOS architecture ensures TTL-compatible input thresholds and rail-to-rail output swing.
It supports wide-voltage operation (2–6 V), exhibits 80 µA max ICC quiescent current, and maintains 1 µA max input leakage. Switching performance is characterized at CL = 50 pF, with tpd = 10 ns (typ), ten = 21 ns (typ), and tdis = 19 ns (typ) at VCC = 6 V and TA = 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 6 V - enables interoperability with 3.3 V and 5 V logic families and legacy 2 V systems. |
| Propagation Delay (tpd) | 10 ns (typ) at VCC = 6 V, CL = 50 pF - ensures timing-critical bus buffering with minimal latency. |
| Output Drive Current | ±6 mA at VCC = 5 V - sufficient to drive 15 LSTTL loads directly without external amplification. |
| Quiescent Supply Current (ICC) | 80 µA max - reduces static power in battery-backed or low-power hold modes. |
| Input Leakage Current (II) | 1 µA max - prevents unintended logic transitions from floating or weakly biased inputs. |
| 3-State Enable Logic | Active-low dual OE (OE1 and OE2) - requires both low for output enable; either high disables all outputs. |
| Operating Temperature | −55°C to +125°C - qualified for extended-range military and space applications per SN54 standard. |
Pinout & Package
SNJ54HC365J is housed in a 16-pin Ceramic Dual In-line Package (CDIP-J) with nominal body size 24.38 mm × 6.92 mm and through-hole mounting. The package is lead-free exempt (SNPB finish), moisture-insensitive (MSL N/A), and rated for −55°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 7, 9 (A1–A6) | Buffer Input | Noninverting data inputs corresponding to Y1–Y6 outputs; accept TTL/CMOS logic levels. |
| 3, 6, 8, 10, 13, 15 (Y1–Y6) | Buffer Output | 3-state outputs; high-impedance when OE1 or OE2 is high; otherwise true replica of A-inputs. |
| 11 (OE1) | Output Enable 1 | Active-low global enable for Y1–Y3; tied high disables first three buffers. |
| 14 (OE2) | Output Enable 2 | Active-low global enable for Y4–Y6; tied high disables last three buffers. |
| 16 (VCC) | Positive Supply | Power rail connection; requires local 0.1-µF bypass capacitor per TI layout guidelines. |
| 8 (GND) | Ground Reference | Common return path for all signals and supply; must be low-inductance connection. |
Key Features
| Feature | Design Value |
|---|---|
| Wide-Voltage Operation | 2 V to 6 V supply range allows direct interface with mixed-voltage systems including 3.3 V microcontrollers and 5 V legacy peripherals. |
| High-Current 3-State Outputs | ±6 mA drive at 5 V supports direct fanout to 15 LSTTL loads - eliminates need for additional bus transceivers in memory address routing. |
| Low Power Consumption | 80 µA max ICC enables use in always-on monitoring circuits without compromising system-level power budgets. |
| Dual Independent Output Enables | OE1 controls Y1–Y3; OE2 controls Y4–Y6 - permits selective bus segmentation and partial resource gating in multi-bank architectures. |
| True Output Polarity | Noninverting logic function preserves signal integrity across address/data paths - critical for deterministic timing in synchronous memory interfaces. |
Applications
| Memory Address Buffering | Aerospace Data Bus Interface |
|---|---|
|
Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM banks in a radiation-tolerant avionics subsystem. IC Role / Device Role / Timing Role: Hex buffer providing level-shifted, high-drive, 3-state-controlled address distribution with simultaneous bank isolation. Use Value: Enables deterministic address decoding under EMI stress via rail-to-rail CMOS output swing and <10 ns propagation delay. |
Use Scenario: Isolating MIL-STD-1553B remote terminal address/data lanes during hot-swap maintenance cycles. IC Role / Device Role / Timing Role: 3-state line driver managing bidirectional bus access control between processor and peripheral modules. Use Value: Dual OE pins allow independent gating of upper/lower byte lanes - supporting phased reconfiguration without full bus reset. |
| Test Equipment Signal Conditioning | Secure Bootloader Isolation |
|
Use Scenario: Level-translating and buffering JTAG TDI/TDO/TMS signals between 1.8 V FPGA and 5 V boundary-scan controller. IC Role / Device Role / Timing Role: Noninverting voltage-tolerant buffer ensuring signal fidelity across voltage domains with sub-10 ns skew. Use Value: 2–6 V operation and 1 µA input leakage prevent false triggering during low-voltage debug sequences. |
Use Scenario: Physically isolating secure boot ROM address lines from main CPU during firmware validation phase. IC Role / Device Role / Timing Role: Tamper-evident 3-state gate disabling ROM access until cryptographic signature verification completes. Use Value: −55°C to +125°C rating ensures reliable enable/disable behavior across environmental stress screening profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex buffer with 3-state output applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC365N | Commercial-grade PDIP variant; −40°C to +85°C temp range; same pinout and logic function. | Not qualified for military temperature extremes or radiation-hardened environments. | Select SN74HC365N only for industrial or commercial systems where extended temperature and reliability certification are unnecessary. |
| SNJ54LS365J | Bipolar TTL version; 4.75–5.25 V only; higher ICC (20 mA typ); slower tpd (~25 ns); lower noise immunity. | Limited to legacy 5 V-only designs; incompatible with mixed-voltage or low-power architectures. | Choose SNJ54LS365J only when maintaining strict TTL family compatibility is mandatory and power/timing margins permit. |
Compared with SNJ54HC365J, SN74HC365N sacrifices military temperature range and reliability qualification for cost reduction, while SNJ54LS365J trades CMOS efficiency and voltage flexibility for legacy TTL interoperability - making SNJ54HC365J the sole choice for new high-reliability, wide-supply, radiation-aware designs.
Availability
SNJ54HC365J is available at Aetrix Electronics and suitable for aerospace flight computers, defense radar control units, and satellite telemetry subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SNJ54HC365J 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 SNJ54HC365J belongs to TI's military-qualified HC logic family, designed specifically for robust, wide-voltage, 3-state bus interfacing in mission-critical systems where temperature resilience and long-term supply assurance are mandatory.
FAQ
What is the maximum operating temperature for SNJ54HC365J?
The SNJ54HC365J is rated for operation from −55°C to +125°C, meeting the full SN54 military temperature specification. This range is validated per JEDEC JESD22-A108 and supported by TI's production test flow for high-reliability devices. The SNJ54HC365J maintains specified electrical performance across this entire range, unlike commercial variants such as SN74HC365N which only operate from −40°C to +85°C.
Does SNJ54HC365J support 3.3 V logic interfacing?
Yes, SNJ54HC365J fully supports 3.3 V logic interfacing. Its 2 V to 6 V supply range includes 3.3 V operation, and its input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 3.3 V) are compatible with standard 3.3 V CMOS outputs. The SNJ54HC365J also provides rail-to-rail 3.3 V outputs with ±4 mA drive capability, enabling direct connection to 3.3 V receivers without level-shifting circuitry.
How are the two output enable pins (OE1 and OE2) used in SNJ54HC365J?
In SNJ54HC365J, OE1 controls outputs Y1–Y3 and OE2 controls outputs Y4–Y6. Both must be low for their respective outputs to pass A-inputs; if either is high, its associated outputs enter high-impedance state. This allows independent bus segmentation - for example, using OE1 to isolate lower address bits during DMA transfers while keeping upper bits active via OE2. The SNJ54HC365J does not support combined enable logic; no internal OR/AND function exists between OE1 and OE2.
Is SNJ54HC365J RoHS compliant?
No, SNJ54HC365J is not RoHS compliant. It uses a tin-lead (SNPB) finish on its CDIP package, as confirmed in TI's Package Option Addendum. This exemption applies to military-grade parts where leaded finishes are retained for solder joint reliability under thermal cycling and mechanical stress. For RoHS-compliant alternatives, consider SN74HC365DR (SOIC) or SN74HC365PWR (TSSOP), though these lack military temperature rating and qualification.
What is the typical propagation delay of SNJ54HC365J at 5 V supply?
The typical propagation delay (tpd) of SNJ54HC365J at VCC = 5 V and CL = 50 pF is 12 ns, per TI's SCLS308E datasheet Section 5.5. This value represents the maximum of tPLH and tPHL transitions and is measured under standard load conditions. At 6 V, tpd improves to 10 ns (typ), while at 2 V it degrades to 50 ns (typ). The SNJ54HC365J's delay stability across voltage makes it suitable for timing-critical address latching in mixed-supply systems.
SNJ54HC365J 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:
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SNJ54HC365J FAQ
1.How can I place an order for SNJ54HC365J through Aetrix?
Please submit a Request for Quotation (RFQ) for SNJ54HC365J 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 SNJ54HC365J reliable?
The price and inventory of SNJ54HC365J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SNJ54HC365J is usually 5 days.
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SNJ54HC365J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SNJ54HC365J 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 SNJ54HC365J?
For technical support, including SNJ54HC365J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SNJ54HC365J requirements.
6.How does Aetrix verify that SNJ54HC365J is sourced from the original manufacturer or authorized distributors?
All SNJ54HC365J 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 SNJ54HC365J meets industry standards.
7.What is the process for return or replacement of SNJ54HC365J?
All SNJ54HC365J units undergo pre-shipment inspection (PSI). If there is an issue with SNJ54HC365J, 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 SNJ54HC365J part is unused and in its original packaging.
Return procedure for SNJ54HC365J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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