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Texas Instruments CD74HCT541M96G4
- Part No.:
- CD74HCT541M96G4
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CD74HCT541M96G4.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,321
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Product details
Overview
CD74HCT541M96G4 from Texas Instruments is a non-inverting octal buffer and line driver with three-state outputs, designed for bus interface and data routing in 5-V digital systems. It delivers 11 ns typical propagation delay at VCC = 5 V, CL = 15 pF, supports –55°C to +125°C operation, drives up to 15 LSTTL loads, and features dual output-enable controls (OE1, OE2) for flexible bus arbitration.
For engineers reviewing the CD74HCT541M96G4 datasheet, CD74HCT541M96G4 pinout, CD74HCT541M96G4 application, or CD74HCT541M96G4 equivalent, key selection criteria include its HCT logic family compatibility with LSTTL inputs, SOIC-20 package footprint, three-state bus-driving capability, and guaranteed performance across extended temperature ranges.
Technical Context
The CD74HCT541M96G4 implements eight independent non-inverting buffer channels, each with high-impedance three-state output control governed by the logical AND of OE1 and OE2. Its input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V) ensure direct compatibility with standard TTL logic levels at 4.5–5.5 V supply.
It operates with CMOS power efficiency while maintaining TTL-level drive strength: output sink/source current is ±25 mA per pin, and quiescent ICC remains ≤160 μA over full temperature range. Propagation delay (tPLH/tPHL) and enable/disable timing (tPLZ/tPHZ) are fully characterized from –55°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - Ensures stable operation in standard 5-V logic rails with ±5% tolerance. |
| Propagation Delay | 11 ns (typ) at VCC = 5 V, CL = 15 pF - Enables reliable timing in high-speed address/data bus applications up to ~45 MHz. |
| Output Drive | 15 LSTTL loads - Sufficient to drive multiple legacy TTL devices without external buffering. |
| Input Compatibility | VIL ≤ 0.8 V (max), VIH ≥ 2.0 V (min) - Directly interfaces with 74LS/74ALS outputs without level-shifting. |
| Operating Temperature | –55°C to +125°C - Qualified for aerospace, industrial control, and under-hood automotive environments. |
| Three-State Leakage | ±10 μA (max) at –55°C to +125°C - Minimizes bus contention current when outputs are disabled. |
| Power Dissipation Cap. | 55 pF - Used to calculate dynamic power: PD = VCC² × fi × (CPD + CL). |
Pinout & Package
CD74HCT541M96G4 is housed in a 20-pin SOIC (DW) package with 12.80 mm × 7.50 mm body size, 1.27 mm lead pitch, and RoHS-compliant NiPdAu lead finish. It conforms to JEDEC MS-013 and is rated MSL Level-1 (unlimited floor life at ≤30°C/60% RH).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Inputs (A0–A7) | Non-inverting data inputs; accept TTL-compatible logic levels directly. |
| 9, 10, 11, 12, 13, 14, 15, 16 | Outputs (Y0–Y7) | Three-state buffered outputs; high-impedance when OE1 or OE2 is HIGH. |
| 17, 18 | Output Enables (OE1, OE2) | Active-LOW enables; both must be LOW for output drivers to be active. |
| 19 | GND | Ground reference for all I/O and internal circuitry. |
| 20 | VCC | Positive supply rail (4.5–5.5 V); requires local 0.1-μF bypass capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Non-inverting octal buffering | Preserves signal polarity across all eight channels-critical for address/data bus integrity without inversion logic. |
| Dual output-enable control | OE1 and OE2 act as AND-gated enable; allows hierarchical bus arbitration using separate control signals. |
| LSTTL load drive (15 loads) | Eliminates need for additional bus transceivers when interfacing with legacy TTL peripherals or memory subsystems. |
| Extended temperature range | –55°C to +125°C operation supports deployment in uncontrolled industrial enclosures and avionics subsystems. |
| Low dynamic power consumption | 55-pF power dissipation capacitance enables efficient high-frequency operation without excessive self-heating. |
Applications
| Industrial PLC Backplane Interface | Automotive Engine Control Unit (ECU) I/O Expansion |
|---|---|
Use Scenario: Interfacing microcontroller GPIOs to a multi-slot backplane carrying parallel sensor and actuator data. IC Role / Device Role / Timing Role: Octal buffer isolates MCU pins from bus loading and provides three-state control for slot-selective communication. Use Value: Enables hot-swap-capable backplane design with deterministic 11-ns propagation delay and no external level shifters required. | Use Scenario: Expanding digital I/O capacity for engine sensors (e.g., knock, cam position) and solenoid drivers in an ECU. IC Role / Device Role / Timing Role: Non-inverting buffer conditions signals between 3.3-V MCU and 5-V legacy sensor modules while supporting diagnostic bus sharing. Use Value: Delivers guaranteed operation at 125°C ambient and withstands automotive load-dump transients via robust input/output clamping. |
| Military Data Acquisition System | Test Equipment Digital Pattern Generator |
Use Scenario: Routing calibrated digital stimulus patterns from FPGA-based pattern generators to DUT test points. IC Role / Device Role / Timing Role: Three-state buffer isolates pattern generator outputs during idle periods to prevent signal corruption on shared test buses. Use Value: Supports MIL-STD-883 Class B screening with –55°C startup and <10 μA leakage in high-Z state for low-noise measurement integrity. | Use Scenario: Driving multiple parallel channels of a boundary-scan test controller with precise timing alignment. IC Role / Device Role / Timing Role: Synchronizes eight-bit wide test vectors onto device-under-test scan chains with matched tPLH/tPHL and minimal skew. Use Value: Achieves sub-15 ns enable-to-output timing (tPLZ) for tight setup/hold windows in IEEE 1149.1 compliant testers. |
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 |
|---|---|---|---|
| SN74HCT244N | Same HCT family, identical 4.5–5.5 V VCC, but uses single OE (active-low) instead of dual OE; 10 ns typical tPLH. | Less flexible bus arbitration due to single enable; preferred where simplified control logic is prioritized over hierarchical gating. | Select SN74HCT244N when board space permits PDIP-20 and dual-OE functionality is unnecessary. |
| 74ACT541SCX | ACT family: higher speed (8 ns typ), wider VCC (4.5–5.5 V), but higher ICC (≤2 mA max) and limited –40°C to +85°C temp range. | Better for commercial-speed-critical designs; unsuitable for extended-temp or ultra-low-quiescent-power requirements. | Choose 74ACT541SCX only if 3 ns faster propagation justifies reduced temperature margin and higher static current. |
Compared with SN74HCT244N and 74ACT541SCX, CD74HCT541M96G4 uniquely balances military-grade temperature resilience, dual-OE bus control, and proven reliability in safety-critical embedded systems-making it optimal for aerospace, defense, and harsh-environment industrial use cases.
Availability
CD74HCT541M96G4 is available at Aetrix Electronics and suitable for industrial automation, automotive ECU design, military data acquisition, and test equipment requiring stable component supply with long-term manufacturability and traceable sourcing.
Supply support for CD74HCT541M96G4 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 logic solutions for industrial, automotive, and aerospace markets.
CD74HCT541M96G4 belongs to TI's CD74HCT high-speed CMOS logic family, engineered to replace legacy TTL in demanding environments while delivering CMOS power efficiency and robust noise immunity.
FAQ
What is the maximum operating temperature for CD74HCT541M96G4?
The CD74HCT541M96G4 is fully specified from –55°C to +125°C, with all electrical parameters-including propagation delay, output drive, and leakage-guaranteed across this extended industrial/military temperature range. This makes CD74HCT541M96G4 suitable for under-hood automotive, avionics, and outdoor industrial deployments where thermal stress exceeds commercial-grade limits.
Does CD74HCT541M96G4 require external pull-up resistors on its outputs?
No, CD74HCT541M96G4 does not require external pull-up resistors on its outputs. Its three-state outputs present high impedance (Z) when disabled, and actively drive high or low when enabled-eliminating bus contention without passive termination. Pull-ups are only needed if open-drain emulation is required, which CD74HCT541M96G4 does not support natively.
Can CD74HCT541M96G4 interface directly with 3.3-V microcontrollers?
CD74HCT541M96G4 accepts 3.3-V logic-high inputs reliably (VIH min = 2.0 V), but its outputs swing to 5 V when VCC = 5 V. Therefore, direct connection to 3.3-V MCU inputs risks overvoltage damage unless the MCU I/O pins are 5-V tolerant. For safe 3.3-V system integration, use level-shifting buffers or select a 3.3-V logic-family variant like SN74LVC541A.
What is the function of OE1 and OE2 on CD74HCT541M96G4?
OE1 and OE2 are active-LOW output-enable terminals that operate as a logical AND: outputs Y0–Y7 enter high-impedance state if either OE1 or OE2 is HIGH; they drive data only when both OE1 and OE2 are LOW. This dual-enable architecture enables hierarchical bus control-for example, OE1 for board-level enable and OE2 for slot-level selection-without external logic gates.
Is CD74HCT541M96G4 pin-compatible with CD74HC541M96?
Yes, CD74HCT541M96G4 is pin-compatible with CD74HC541M96, sharing identical SOIC-20 footprint, pin numbering, and functional mapping. However, CD74HC541M96 operates from 2–6 V and has CMOS-input thresholds, whereas CD74HCT541M96G4 is optimized for 4.5–5.5 V with TTL-compatible inputs-requiring careful VCC and signal-level validation during substitution.
CD74HCT541M96G4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HCT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 6mA, 6mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
CD74HCT541M96G4 FAQ
1.How can I place an order for CD74HCT541M96G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD74HCT541M96G4 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 CD74HCT541M96G4 reliable?
The price and inventory of CD74HCT541M96G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD74HCT541M96G4 is usually 5 days.
3.What payment methods are accepted for CD74HCT541M96G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD74HCT541M96G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD74HCT541M96G4?
CD74HCT541M96G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD74HCT541M96G4 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 CD74HCT541M96G4?
For technical support, including CD74HCT541M96G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD74HCT541M96G4 requirements.
6.How does Aetrix verify that CD74HCT541M96G4 is sourced from the original manufacturer or authorized distributors?
All CD74HCT541M96G4 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 CD74HCT541M96G4 meets industry standards.
7.What is the process for return or replacement of CD74HCT541M96G4?
All CD74HCT541M96G4 units undergo pre-shipment inspection (PSI). If there is an issue with CD74HCT541M96G4, 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 CD74HCT541M96G4 part is unused and in its original packaging.
Return procedure for CD74HCT541M96G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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