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onsemi 74AC541SJX-ON
- Part No.:
- 74AC541SJX-ON
- Manufacturer:
- onsemi
- Package:
- 20-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
74AC541SJX-ON.pdf
- Description:
- IC BUFFER NON-INVERT 6V 20SOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,979
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Product details
Overview
74AC541SJX-ON from ON Semiconductor is an octal non-inverting buffer/line driver with 3-STATE outputs, designed for memory and address bus interfacing, clock distribution, and microprocessor output port expansion. It operates from 2.0V to 6.0V, delivers ±24mA output drive, features flow-through pinout (inputs on one side, outputs on the other), and supports industrial temperature range (−40°C to +85°C).
For engineers reviewing the 74AC541SJX-ON datasheet, pinout, applications, or equivalent options, this page provides verified technical context, real-world use cases, pin-level design meaning, and validated alternative options for bus buffering in embedded control and digital logic systems.
Technical Context
The 74AC541SJX-ON implements TTL-compatible AC logic family architecture with CMOS input stages and totem-pole output drivers. Its dual 3-STATE enable inputs (OE1, OE2) allow independent control of two 4-bit groups, enabling flexible bus partitioning and bidirectional data path management.
It uses flow-through package layout (inputs on left, outputs on right), reducing PCB trace crossovers and improving signal integrity in high-density layouts. Propagation delay is 4.0ns typical at VCC = 5.0V (CL = 50pF), with output disable time as low as 5.5ns, supporting fast bus turnaround in shared-data applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | AC (Advanced CMOS), non-inverting buffer |
| Supply Voltage Range | 2.0V–6.0V - enables direct interface with 3.3V and 5V logic domains |
| Output Drive | ±24mA - sufficient to drive 15–20 TTL loads or terminate short stubs on parallel buses |
| Propagation Delay | 4.0ns typ @ 5V - ensures timing compatibility with 100+ MHz system clocks in buffered paths |
| 3-STATE Enable Time | 6.0ns max @ 5V - minimizes bus contention window during direction switching |
| Input Leakage | ±1.0µA max - reduces static power draw and prevents unintended logic transitions |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded and automotive under-hood control modules |
Pinout & Package
74AC541SJX-ON is packaged in a 20-lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm wide (package code M20D), with gull-wing leads and JEDEC-compliant footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Data Inputs (I1–I8) | CMOS-compatible inputs accepting 2.0V–6.0V logic levels; no internal pull-ups/downs |
| 9, 10 | 3-STATE Enables (OE1, OE2) | Active-low controls: OE1 enables I1–I4 outputs, OE2 enables I5–I8 outputs |
| 11, 13, 14, 15, 16, 17, 18, 20 | Data Outputs (Y1–Y8) | Push-pull totem-pole outputs; high-impedance when corresponding OE is HIGH |
| 12 | GND | Ground reference for all logic and output stages; must be low-inductance connection |
| 19 | VCC | Positive supply rail; decoupling capacitor (0.1µF) required within 10mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pinout | Inputs on left side (pins 1–8), outputs on right side (pins 11,13–20) - simplifies PCB routing and reduces layer count |
| Dual independent 3-STATE control | Separate OE1/OE2 pins allow selective activation of upper/lower 4-bit nibbles - enables partial bus gating without full reconfiguration |
| Low ICC and IOZ | Quiescent supply current ≤40µA and 3-STATE leakage ≤2.5µA - critical for low-power standby modes in battery-backed systems |
| High noise immunity | VIH = 2.1V min / VIL = 0.9V max @ 3.0V VCC - provides >1.2V noise margin against ground bounce and crosstalk |
| TTL-compatible input thresholds | Not applicable - 74AC541SJX-ON uses AC logic thresholds; 74ACT541 variant has TTL-compatible inputs |
Applications
| Memory Address Buffering | Microprocessor Output Port |
|---|---|
Use Scenario: Driving 16-bit address bus from a microcontroller with limited drive strength and routing congestion. IC Role / Device Role / Timing Role: Non-inverting octal buffer isolating MCU pins from capacitive bus load; dual OE allows segmented address decoding. Use Value: Prevents address skew and timing violations by delivering 24mA per line and 4ns propagation delay across all eight channels. | Use Scenario: Expanding GPIO capability of an 8-bit MCU to drive external peripherals like LCD controllers or LED arrays. IC Role / Device Role / Timing Role: Bidirectional-capable output port extender using 3-STATE control for shared data lines. Use Value: Enables clean bus arbitration with 5.5ns output disable time, eliminating contention during read/write transitions. |
| Industrial Bus Transceiver Interface | Legacy System Signal Conditioning |
Use Scenario: Level-shifting and fanout buffering between 3.3V FPGA I/O banks and 5V legacy backplane signals. IC Role / Device Role / Timing Role: Unidirectional voltage-tolerant buffer with 2.0V–6.0V operation, placed on FPGA side of interface. Use Value: Eliminates need for discrete level shifters while maintaining <6ns timing margins for 25MHz parallel bus operation. | Use Scenario: Replacing aging 74LS244 buffers in repair of industrial PLC I/O modules where space and power are constrained. IC Role / Device Role / Timing Role: Drop-in functional replacement with lower ICC, higher speed, and wider VCC range than LS-series. Use Value: Reduces module power dissipation by >80% and extends operational lifetime via CMOS reliability and −40°C start-up capability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer/line driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74AC244MTCX-ON | Non-inverting octal buffer with identical AC logic specs but single 3-STATE enable (not dual) | Lacks independent nibble control; requires external logic for segmented enable | Select when simplified enable architecture suffices and board space favors TSSOP-20 |
| SN74LVC244APWR | 3.3V-only operation (1.65V–3.6V), lower drive (±24mA), LVTTL-compatible inputs | Not suitable for mixed 3.3V/5V systems; requires level translation for 5V buses | Prefer for modern 3.3V-only designs where ultra-low ICC (1µA) and smaller TSSOP-20 footprint are priorities |
Compared with 74AC541SJX-ON, 74AC244MTCX-ON offers identical AC performance but less flexible enable control, while SN74LVC244APWR trades 5V compatibility and dual-OE for lower voltage operation and reduced static power - choice depends on system voltage architecture and bus segmentation requirements.
Availability
74AC541SJX-ON is available at Aetrix Electronics and suitable for industrial control panels, legacy system upgrades, and microprocessor peripheral interfaces requiring stable component supply, long-term lifecycle support, and guaranteed lead-free compliance.
Supply support for 74AC541SJX-ON 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
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, logic, and sensor solutions for automotive, industrial, cloud computing, and consumer markets.
The 74AC541SJX-ON belongs to ON Semiconductor's legacy logic portfolio inherited from Fairchild, engineered for robustness, wide supply range, and pin-compatible upgrade paths in industrial and infrastructure equipment.
FAQ
What is the maximum operating supply voltage for the 74AC541SJX-ON?
The 74AC541SJX-ON supports a maximum supply voltage of 6.0V under recommended operating conditions. Absolute maximum rating is +7.0V, but operation above 6.0V is not guaranteed and may compromise reliability or parametric performance. All DC and AC specifications in the datasheet are validated up to 6.0V, and 74AC541SJX-ON must be operated within 2.0V–6.0V for compliant functionality.
Does the 74AC541SJX-ON have TTL-compatible inputs?
No, the 74AC541SJX-ON uses AC-family CMOS input thresholds (VIH = 2.1V min @ 3.0V VCC), not TTL-compatible inputs. The 74ACT541 variant - not 74AC541SJX-ON - provides TTL-compatible input thresholds (VIH = 2.0V min, VIL = 0.8V max). Using 74AC541SJX-ON with standard TTL outputs may result in marginal noise margin; verify VIH/VIL compatibility in your specific 74AC541SJX-ON application.
What is the pin pitch and package width of the 74AC541SJX-ON SOP package?
The 74AC541SJX-ON is housed in an EIAJ TYPE II SOP package with 20 leads, 0.65mm pin pitch, and 5.3mm body width. This matches JEDEC-standard SOIC-20 dimensions for pick-and-place compatibility, though it differs from the narrower 3.9mm TSSOP and wider 7.5mm SOIC variants. The 74AC541SJX-ON footprint is documented as M20D in ON Semiconductor's packaging specifications.
Can the 74AC541SJX-ON drive a 50pF load at 25MHz without signal degradation?
Yes - the 74AC541SJX-ON is characterized with CL = 50pF and achieves 4.0ns typical propagation delay at 5.0V, supporting clean edge rates up to ~100MHz fundamental frequency. At 25MHz, its 6ns max output disable time and 24mA drive ensure minimal rise/fall time degradation (<5ns) into 50pF, provided proper VCC decoupling and controlled-impedance routing are implemented per the 74AC541SJX-ON layout guidelines.
Is the 74AC541SJX-ON RoHS compliant and lead-free?
Yes, the 74AC541SJX-ON is lead-free and complies with JEDEC J-STD-020B reflow standards. All packages listed for the 74AC541 family - including the SJ variant - are explicitly marked "lead free per JEDEC: J-STD-020B standard" in the official ON Semiconductor datasheet. The 74AC541SJX-ON meets RoHS Directive 2011/65/EU and is suitable for environmentally regulated industrial and commercial applications.
74AC541SJX-ON Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74AC
- Package/Case:
- 20-SOIC (0.209", 5.30mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOP
74AC541SJX-ON FAQ
1.How can I place an order for 74AC541SJX-ON through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AC541SJX-ON 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 74AC541SJX-ON reliable?
The price and inventory of 74AC541SJX-ON are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AC541SJX-ON is usually 5 days.
3.What payment methods are accepted for 74AC541SJX-ON?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AC541SJX-ON transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AC541SJX-ON?
74AC541SJX-ON orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AC541SJX-ON 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 74AC541SJX-ON?
For technical support, including 74AC541SJX-ON datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AC541SJX-ON requirements.
6.How does Aetrix verify that 74AC541SJX-ON is sourced from the original manufacturer or authorized distributors?
All 74AC541SJX-ON 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 74AC541SJX-ON meets industry standards.
7.What is the process for return or replacement of 74AC541SJX-ON?
All 74AC541SJX-ON units undergo pre-shipment inspection (PSI). If there is an issue with 74AC541SJX-ON, 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 74AC541SJX-ON part is unused and in its original packaging.
Return procedure for 74AC541SJX-ON:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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