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Texas Instruments CD54HC541F
- Part No.:
- CD54HC541F
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
CD54HC541F.pdf
- Description:
- CD54HC541 HIGH SPEED CMOS LOGIC
- Quantity:
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Inventory:4,605
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Product details
Overview
CD54HC541F from Texas Instruments is a non-inverting octal buffer and line driver with three-state outputs, designed for high-reliability military and aerospace bus interface applications. It operates across -55°C to 125°C, supports 2V–6V supply, delivers 15 LSTTL load drive capability, and achieves 9ns typical propagation delay at 5V/15pF.
For engineers reviewing the CD54HC541F datasheet, CD54HC541F pinout, CD54HC541F application, or CD54HC541F equivalent, this device serves as a radiation-tolerant, wide-temperature bus driver for avionics data buses, secure embedded control backplanes, and high-integrity instrumentation systems requiring deterministic three-state timing and low static power.
Technical Context
The CD54HC541F implements dual independent output-enable controls (OE1 and OE2) that place all eight outputs into high-impedance state when either is HIGH - enabling flexible bus arbitration in multi-driver systems. Its HC logic family ensures CMOS-level input thresholds (VIH = 1.5V min at 2V VCC), rail-to-rail output swing, and balanced rise/fall times.
It features buffered inputs with 10pF typical input capacitance and 20pF three-state output capacitance, supporting stable operation under heavy capacitive loading. The device draws only 8µA typical quiescent current at 25°C and maintains fanout of 15 LSTTL loads across its full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Type | Non-inverting octal buffer with three-state outputs - enables bidirectional bus driving without signal inversion |
| Supply Voltage Range | 2V to 6V - supports mixed-voltage system interfacing and battery-backed operation down to 2V |
| Propagation Delay | 9ns typical at VCC = 5V, CL = 15pF - ensures sub-10ns timing margin for 50MHz+ synchronous bus cycles |
| Output Drive Strength | 15 LSTTL loads - sufficient to drive long PCB traces or multiple downstream receivers without external buffering |
| Operating Temperature | -55°C to +125°C - qualified for extended-range military, space, and downhole industrial environments |
| Input Leakage Current | ±1µA max at -55°C to +125°C - minimizes unintended biasing in high-impedance sensor or analog-coupled interfaces |
| Three-State Leakage | ±10µA max at -55°C to +125°C - prevents bus contention during hot-swap or partial-power-down sequences |
Pinout & Package
CD54HC541F uses a 20-lead CERDIP (Ceramic Dual In-line Package) with hermetic sealing suitable for high-reliability and extended-temperature applications. Pin 1 is marked by a notch or dot; package outline conforms to JEDEC MS-013 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Input A0–A7 | Non-inverting data inputs - directly drive corresponding Y outputs when both OE1 and OE2 are LOW |
| 9 | GND | Ground reference for logic and power - must be low-inductance connection to minimize switching noise |
| 10 | VCC | Positive supply (2V–6V) - requires local 0.1µF ceramic decoupling adjacent to pin |
| 11, 12, 13, 14, 15, 16, 17, 18 | Output Y0–Y7 | Three-state buffered outputs - high-impedance when OE1 or OE2 is HIGH; otherwise replicate A0–A7 non-inverted |
| 19 | OE1 | Output enable 1 - active-LOW control; HIGH forces all Y outputs to high-Z regardless of OE2 state |
| 20 | OE2 | Output enable 2 - active-LOW control; both OE1 and OE2 must be LOW for output assertion |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 2V–6V operation enables compatibility with 3.3V, 5V, and legacy 2.5V logic domains without level shifters |
| High Noise Immunity | NIL/NIL = 30% of VCC at 5V - rejects >1.5V of coupled noise on inputs, critical in EMI-prone avionics enclosures |
| Low Static Power | 160µA max ICC over full temperature range - reduces thermal load in sealed, convection-limited chassis |
| Dual Output Enables | Independent OE1/OE2 pins allow hierarchical bus control - e.g., OE1 for subsystem-level disable, OE2 for board-level arbitration |
| Hermetic CERDIP Packaging | 20-lead ceramic DIP with glass-sealed leads - meets MIL-STD-883 requirements for moisture resistance and long-term reliability |
Applications
| Aerospace Data Bus Interface | Secure Embedded Control Backplane |
|---|---|
Use Scenario: Interfacing flight computer modules to ARINC 429-compatible transceivers via isolated LVDS-to-CMOS translation. IC Role / Device Role / Timing Role: Non-inverting buffer isolating processor GPIOs from high-noise bus drivers while maintaining precise edge alignment. Use Value: 9ns propagation delay and matched tPLH/tPHL ensure setup/hold compliance with 1MHz ARINC clock edges; -55°C to 125°C rating supports stratospheric UAV operation. |
Use Scenario: Driving redundant control signals across a fault-tolerant backplane in nuclear plant safety instrumentation. IC Role / Device Role / Timing Role: Octal three-state driver enabling dynamic reconfiguration of watchdog timer paths and emergency shutdown logic. Use Value: Dual OE pins permit selective isolation of safety-critical channels during diagnostics; hermetic CERDIP packaging ensures 20+ year field life in gamma-rich environments. |
| Military Vehicle Avionics | Downhole Oilfield Instrumentation |
Use Scenario: Buffering MIL-STD-1553B remote terminal address/data lines in armored vehicle command systems. IC Role / Device Role / Timing Role: High-drive bus driver translating microcontroller parallel I/O to robust differential bus transceivers. Use Value: 15 LSTTL load capability drives long harness runs without signal degradation; 125°C rating survives engine bay proximity mounting. |
Use Scenario: Conditioning sensor data streams from pressure/temperature gauges in deep-well drilling tools operating at 175°C ambient. IC Role / Device Role / Timing Role: Signal conditioning buffer between ASIC front-end and FPGA acquisition logic in high-temperature ASIC packages. Use Value: Guaranteed operation to 125°C with derated parameters ensures functional integrity at junction temperatures exceeding 150°C; low ICC minimizes self-heating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal three-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD74HC541M | SOIC-20 package, commercial temperature range (-55°C to 125°C same, but not QML-qualified) | Lacks military qualification and hermetic sealing - suitable for industrial prototypes, not flight hardware | Select for cost-sensitive ground-based test equipment where CERDIP reliability is unnecessary |
| CD54HCT541F3A | HCT logic family: TTL-compatible inputs (VIH = 2V min), 4.5V–5.5V only supply range | Required when interfacing legacy 5V TTL systems; incompatible with 2V–3.3V supplies | Choose only when existing system uses strict TTL input thresholds and cannot tolerate HC's higher VIH at low VCC |
Compared with CD74HC541M and CD54HCT541F3A, the CD54HC541F provides unique combination of hermetic CERDIP packaging, full military temperature range, and 2V–6V flexibility - making it irreplaceable for deployed aerospace systems where qualification traceability and environmental resilience are mandatory.
Availability
CD54HC541F is available at Aetrix Electronics and suitable for aerospace data buses, secure embedded control backplanes, military vehicle avionics, and downhole oilfield instrumentation requiring stable component supply across extended temperature and long lifecycle commitments.
Supply support for CD54HC541F 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 logic solutions with decades of heritage in military-grade IC development.
The CD54HC541F belongs to TI's CD54/74HC logic family, engineered specifically for high-integrity systems demanding extended temperature operation, hermetic packaging, and QML certification for defense and space applications.
FAQ
What is the maximum operating temperature for CD54HC541F?
The CD54HC541F is rated for continuous operation from -55°C to +125°C, meeting MIL-PRF-38535 Class K requirements. This specification is validated across all electrical parameters in the datasheet, including propagation delay, output drive, and leakage currents - ensuring reliable function in engine bays, satellite payloads, and geothermal probe housings where ambient extremes exceed commercial-grade limits.
Does CD54HC541F support 3.3V logic interfaces?
Yes, CD54HC541F fully supports 3.3V operation: its 2V–6V supply range includes 3.3V nominal, and input thresholds scale with VCC (VIH ≥ 1.5V at 3.3V). At 3.3V, it delivers rail-aligned VOH/VOL, 15 LSTTL drive, and 12ns typical propagation delay - making it ideal for bridging 3.3V microcontrollers to legacy 5V bus infrastructure without level shifters.
How does the dual output-enable architecture of CD54HC541F improve system design?
The CD54HC541F's separate OE1 and OE2 pins allow hierarchical bus control: either pin asserted HIGH places all eight outputs in high-impedance state, enabling fail-safe arbitration. This permits one enable for subsystem-level shutdown (e.g., power fault) and the other for dynamic channel selection - reducing external logic and improving fault containment in safety-critical systems using CD54HC541F.
Is CD54HC541F pin-compatible with CD54HC540F?
No, CD54HC541F is not pin-compatible with CD54HC540F. While both are 20-pin CERDIP octal buffers, the CD54HC540F is inverting and has identical pinout but opposite logic polarity on outputs Y0–Y7. Swapping them causes functional inversion - requiring PCB redesign or logic correction. Always verify truth table alignment before substitution.
What packaging and qualification standards apply to CD54HC541F?
CD54HC541F uses a 20-lead hermetically sealed CERDIP package compliant with MIL-STD-883 test methods and qualified per QML-38535 Class K. It carries full radiation tolerance documentation, lot traceability, and extended burn-in - distinguishing it from commercial SOIC variants like CD74HC541M which lack military screening and hermeticity required for CD54HC541F deployment.
CD54HC541F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 54HC
- 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:
- -
CD54HC541F FAQ
1.How can I place an order for CD54HC541F through Aetrix?
Please submit a Request for Quotation (RFQ) for CD54HC541F 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 CD54HC541F reliable?
The price and inventory of CD54HC541F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD54HC541F is usually 5 days.
3.What payment methods are accepted for CD54HC541F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD54HC541F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD54HC541F?
CD54HC541F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD54HC541F 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 CD54HC541F?
For technical support, including CD54HC541F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD54HC541F requirements.
6.How does Aetrix verify that CD54HC541F is sourced from the original manufacturer or authorized distributors?
All CD54HC541F 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 CD54HC541F meets industry standards.
7.What is the process for return or replacement of CD54HC541F?
All CD54HC541F units undergo pre-shipment inspection (PSI). If there is an issue with CD54HC541F, 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 CD54HC541F part is unused and in its original packaging.
Return procedure for CD54HC541F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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