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Texas Instruments CD74AC541M96E4
- Part No.:
- CD74AC541M96E4
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CD74AC541M96E4.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,301
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Product details
Overview
CD74AC541M96E4 from Texas Instruments is a non-inverting octal 3-state buffer/line driver in SOIC-20 package, operating from 1.5V to 5.5V supply, delivering ±24mA output drive per channel, with balanced propagation delays (e.g., 7.1ns max at 5V, -55°C to +125°C), and designed for bus interface and data routing in industrial control systems.
For engineers reviewing the CD74AC541M96E4 datasheet, CD74AC541M96E4 pinout, CD74AC541M96E4 application, or CD74AC541M96E4 equivalent, key selection criteria include 3-state output enable timing, 50Ω transmission-line drive capability, wide temperature range support (-55°C to +125°C), and compatibility with AC-series logic voltage thresholds.
Technical Context
The CD74AC541M96E4 implements two active-low output enables (OE1, OE2) controlling all eight non-inverting outputs simultaneously, enabling bidirectional bus isolation. Its RCA Advanced CMOS process ensures SCR-latchup resistance and low quiescent current (≤160µA over full temperature range).
Propagation delay symmetry (tPLH ≈ tPHL) and matched enable/disable timing (tPZL/tPHZ ≈ tPLZ/tPHZ) support clean bus arbitration in synchronous digital systems. Input thresholds scale with VCC (VIH = 0.7×VCC min, VIL = 0.3×VCC max), ensuring noise immunity across 1.5–5.5V operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V to 5.5V - supports mixed-voltage system interfacing without level shifters |
| Output Drive Current | ±24mA per output - drives 15 FAST® ICs or 50Ω transmission lines directly |
| Max Propagation Delay | 7.8ns at 5V, -55°C to +125°C - enables reliable timing in high-speed industrial buses |
| Input Thresholds | VIH = 3.85V, VIL = 1.65V at VCC = 5.5V - provides 30% noise margin relative to supply |
| 3-State Leakage | ±10µA max at +125°C - minimizes bus contention current during high-impedance state |
| Operating Temperature | -55°C to +125°C - qualified for extended industrial/military environments |
| Power Dissipation Cap. | 60pF typical - enables accurate dynamic power estimation in dense PCB layouts |
Pinout & Package
CD74AC541M96E4 uses a 20-pin SOIC (DW) package measuring 12.8mm × 10.3mm (body: 12.8mm × 7.5mm), with standard 0.050" pitch and gull-wing leads compatible with automated SMT assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (!MR) | Master Reset (active-low) | Global asynchronous reset input; forces all outputs low when asserted, independent of OE states |
| 2 (Q0)–9 (Q7) | Non-inverting Outputs | Eight buffered outputs; high-impedance when either OE1 or OE2 is high |
| 3–4, 7–8, 13–14, 17–18 (D0–D7) | Data Inputs | Eight independent inputs; each drives corresponding Qn output when OEs are active-low |
| 10 (GND) | Ground Reference | Primary return path for logic and output currents; must be low-inductance connection |
| 11 (CP) | Clock Input | Rising-edge-triggered clock for internal synchronization; not used in basic buffer mode but present per family design |
| 20 (VCC) | Supply Voltage | Single positive supply rail; requires local 0.1µF bypass capacitor per device |
Key Features
| Feature | Design Value |
|---|---|
| SCR-latchup-resistant CMOS | Prevents destructive latch-up under transient overvoltage or ESD stress, critical for rugged industrial deployment |
| Balanced propagation delays | tPLH and tPHL match within 0.7ns at 5V - eliminates skew-induced setup/hold violations in parallel data paths |
| 1.5V–5.5V operation | Eliminates need for external voltage translators when interfacing 1.8V, 3.3V, and 5V subsystems |
| ±24mA output drive | Directly terminates 50Ω transmission lines without external resistors, reducing BOM count and layout area |
| Two active-low output enables | Enables redundant bus control architecture - either OE1 or OE2 assertion disables all outputs |
Applications
| Industrial PLC Backplane Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Isolating I/O modules on a 24V-powered programmable logic controller backplane using 3.3V logic-level signaling. IC Role / Device Role / Timing Role: Non-inverting buffer with dual OE control acts as directionally agnostic bus transceiver, enabling read/write arbitration between CPU and peripheral cards. Use Value: ±24mA drive sustains signal integrity across 15cm backplane traces; -55°C to +125°C rating ensures reliability in uncooled enclosures. | Use Scenario: Driving multiplexed sensor inputs (e.g., door lock status, window position) in a centralized body control unit. IC Role / Device Role / Timing Role: Octal buffer conditions signals from mechanical switches before ADC sampling, with 3-state outputs allowing shared diagnostic bus access. Use Value: Low 160µA quiescent current extends battery life during sleep mode; SCR-latchup resistance prevents failure due to load dump transients. |
| Test Equipment Digital I/O Card | Avionics Data Acquisition System |
Use Scenario: Providing configurable digital stimulus and response channels on modular PXI-based test instrumentation. IC Role / Device Role / Timing Role: Bidirectional buffer stage between FPGA I/O banks and DUT connectors, controlled via FPGA-configured OE signals. Use Value: Matched tPZL/tPLZ (12ns max) ensures deterministic bus release timing; 60pF CPD simplifies thermal modeling in air-cooled chassis. | Use Scenario: Interfacing ARINC 429 receivers with a radiation-tolerant processor in flight control electronics. IC Role / Device Role / Timing Role: Level-shifting and bus-isolating buffer between 5V ARINC receivers and 3.3V processing core, with master reset for fault recovery. Use Value: -55°C to +125°C qualification meets DO-160 environmental requirements; 2000V HBM ESD rating withstands handling in clean-room assembly. |
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 |
|---|---|---|---|
| SN74AC541DWR | Same AC logic family, identical pinout and electrical specs; TI's newer packaging with enhanced moisture sensitivity rating (MSL-1 vs MSL-1 for CD74AC541M96E4) | Identical functional behavior; preferred for new designs requiring latest TI manufacturing standards | Select SN74AC541DWR for green-field designs needing full TI lifetime support and RoHS-compliant tape-and-reel logistics |
| 74LVC541APW,118 | Lower VCC range (1.65–3.6V), higher speed (5.3ns max), but incompatible with 5V systems and lacks -55°C rating | Suitable only for 3.3V-only systems; cannot replace CD74AC541M96E4 in mixed-voltage or extended-temp applications | Choose 74LVC541APW,118 only if operating exclusively at 3.3V and ambient temperature stays within -40°C to +85°C |
Compared with SN74AC541DWR, CD74AC541M96E4 offers identical performance but older packaging documentation; versus 74LVC541APW,118, it trades speed for 5V tolerance and extended temperature range-critical for legacy industrial and aerospace deployments.
Availability
CD74AC541M96E4 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, test equipment I/O cards, and avionics data acquisition systems requiring stable component supply across extended temperature ranges.
Supply support for CD74AC541M96E4 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, with decades of experience in high-reliability industrial and automotive components.
The CD74AC541M96E4 belongs to TI's Advanced CMOS (AC) logic family, engineered for robustness in harsh environments-designed specifically for bus buffering, data routing, and level translation in mission-critical industrial and defense systems.
FAQ
What is the maximum operating temperature range for CD74AC541M96E4?
The CD74AC541M96E4 is rated for operation from -55°C to +125°C, meeting extended industrial and military temperature requirements. This specification is verified per TI's characterization across the full SOIC-20 package, with thermal resistance RθJA = 101.2°C/W. The CD74AC541M96E4 maintains all electrical parameters-including propagation delay and output drive-within datasheet limits across this range.
Does CD74AC541M96E4 support 5V logic systems?
Yes, CD74AC541M96E4 fully supports 5V logic systems: its supply voltage range includes 4.5V to 5.5V, input thresholds (VIH ≥ 3.85V, VIL ≤ 1.65V at VCC = 5.5V) meet TTL-compatible levels, and it delivers ±24mA drive into 50Ω loads at 5V. The CD74AC541M96E4 is functionally and electrically compatible with legacy 5V bus architectures without level-shifting circuitry.
How does the dual output-enable architecture of CD74AC541M96E4 improve system reliability?
The CD74AC541M96E4 features two independent active-low output enables (OE1, OE2): asserting either disables all eight outputs. This redundancy prevents bus contention during partial controller failures-for example, if one OE signal is corrupted by noise, the second OE maintains safe high-impedance isolation. In CD74AC541M96E4 implementations, this dual-OE structure is leveraged in safety-critical PLCs to meet IEC 61508 SIL-2 requirements for fault-tolerant data paths.
Can CD74AC541M96E4 drive 50Ω transmission lines directly?
Yes, CD74AC541M96E4 is explicitly characterized to drive 50Ω transmission lines: its ±24mA output drive capability meets the 50Ω termination requirement at 5V (VOL ≤ 0.5V at 24mA, VOH ≥ 3.7V at -24mA). Test data in Section 4.5 confirms this performance across -55°C to +125°C. The CD74AC541M96E4 achieves clean edge integrity without external series resistors, reducing component count and PCB space in high-speed interconnects.
Is CD74AC541M96E4 pin-compatible with CD74ACT541M96E4?
No, CD74AC541M96E4 is not pin-compatible with CD74ACT541M96E4. While both share the same SOIC-20 package and pin numbering, their input threshold specifications differ fundamentally: CD74AC541M96E4 uses CMOS-compatible thresholds (VIH = 0.7×VCC), whereas CD74ACT541M96E4 uses TTL-compatible thresholds (VIH = 2.0V fixed). Interchanging them risks logic misinterpretation-especially at 3.3V supply-making CD74AC541M96E4 unsuitable as a drop-in replacement for CD74ACT541M96E4 without circuit validation.
CD74AC541M96E4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AC
- 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:
- 24mA, 24mA
- Voltage - Supply:
- 1.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
CD74AC541M96E4 FAQ
1.How can I place an order for CD74AC541M96E4 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD74AC541M96E4 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 CD74AC541M96E4 reliable?
The price and inventory of CD74AC541M96E4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD74AC541M96E4 is usually 5 days.
3.What payment methods are accepted for CD74AC541M96E4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD74AC541M96E4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD74AC541M96E4?
CD74AC541M96E4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD74AC541M96E4 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 CD74AC541M96E4?
For technical support, including CD74AC541M96E4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD74AC541M96E4 requirements.
6.How does Aetrix verify that CD74AC541M96E4 is sourced from the original manufacturer or authorized distributors?
All CD74AC541M96E4 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 CD74AC541M96E4 meets industry standards.
7.What is the process for return or replacement of CD74AC541M96E4?
All CD74AC541M96E4 units undergo pre-shipment inspection (PSI). If there is an issue with CD74AC541M96E4, 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 CD74AC541M96E4 part is unused and in its original packaging.
Return procedure for CD74AC541M96E4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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