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onsemi MM74HC541SJX
- Part No.:
- MM74HC541SJX
- Manufacturer:
- onsemi
- Package:
- 20-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
MM74HC541SJX.pdf
- Description:
- IC BUFFER NON-INVERT 6V 20SOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,000
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Product details
Overview
MM74HC541SJX from Fairchild Semiconductor is a non-inverting octal 3-STATE buffer IC designed for bidirectional bus interface and data routing in digital systems. It operates across 2–6 V supply, delivers 6 mA output drive per pin, exhibits 14 ns typical propagation delay at 4.5 V/50 pF, and supports fanout of 15 LS-TTL loads - enabling reliable high-speed bus buffering in industrial control and instrumentation.
For engineers reviewing the MM74HC541SJX datasheet, pinout, applications, or equivalent options, key selection criteria include its non-inverting logic function, dual 3-STATE enable (G1/G2 NOR-gated), SOIC-20 package compatibility, and guaranteed 20 ns max propagation delay over full temperature range (–40°C to +85°C).
Technical Context
The MM74HC541SJX implements eight independent non-inverting buffer channels, each with high-impedance (3-STATE) output controlled by a two-input NOR gate formed by G1 and G2 pins. When either G1 or G2 is HIGH, all outputs enter high-Z mode - supporting shared-bus arbitration without external logic.
It uses silicon-gate CMOS technology, delivering TTL-compatible drive strength while maintaining low quiescent current (≤80 µA at 6 V) and high noise immunity. Input protection diodes to VCC and GND guard against ESD, and pinout places inputs on one side and outputs on the opposite side to simplify PCB layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Non-inverting octal buffer with 3-STATE output control |
| Supply Voltage Range | 2.0 V to 6.0 V - enables interoperability with 3.3 V and 5 V logic domains |
| Propagation Delay | 14 ns typical (4.5 V, CL = 50 pF); 20 ns max over –40°C to +85°C - ensures timing predictability in synchronous buses |
| Output Drive | ±6 mA per pin - sufficient to drive 15 LS-TTL loads or 50 pF bus capacitance at full speed |
| 3-STATE Enable Logic | NOR-gated G1/G2 - any HIGH input forces all outputs to high impedance, simplifying bus contention management |
| Input Protection | Clamp diodes to VCC and GND - provides ±20 mA absolute max clamp current for ESD robustness |
| Quiescent Current | ≤80 µA at 6 V - minimizes standby power in battery-backed or low-power embedded systems |
Pinout & Package
MM74HC541SJX is packaged in a 20-lead Small Outline Package (SOP), EIAJ TYPE II, 5.3 mm wide (Package Number M20D), with gull-wing leads and standard JEDEC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Inputs (A1–A8) | Non-inverting data inputs; accept TTL- or CMOS-level signals across full VCC range |
| 9, 10, 11, 12, 13, 14, 15, 16 | Outputs (Y1–Y8) | Buffered non-inverting outputs; tri-stateable via G1/G2; drive capability ±6 mA |
| 17, 18 | 3-STATE Enables (G1, G2) | NOR-gated control: Y1–Y8 go high-Z if G1 = HIGH or G2 = HIGH |
| 19 | GND | Ground reference for all I/O and internal circuitry |
| 20 | VCC | Positive supply rail (2–6 V); powers internal logic and output drivers |
Key Features
| Feature | Design Value |
|---|---|
| Non-inverting logic architecture | Preserves signal polarity across all eight channels - eliminates need for external inversion in data path routing |
| Dual 3-STATE enable with NOR logic | Enables flexible bus arbitration using either G1 or G2 alone; reduces control line count vs. single-enable buffers |
| Input/output pin separation | Inputs on left side, outputs on right side - minimizes trace crosstalk and simplifies layer routing on dense PCBs |
| ESD-protected inputs | Integrated diodes to VCC and GND - withstands ≥2 kV HBM without external protection components |
| Wide voltage operation (2–6 V) | Supports mixed-voltage system design without level shifters - interoperable with both 3.3 V microcontrollers and 5 V legacy peripherals |
Applications
| Industrial PLC Backplane Interface | Legacy Parallel Printer Port Buffering |
|---|---|
|
Use Scenario: Isolating and driving address/data lines between CPU module and I/O expansion slots in programmable logic controllers. IC Role / Device Role / Timing Role: Non-inverting octal buffer with 3-STATE control manages bidirectional bus sharing among multiple modules. Use Value: 6 mA drive and 20 ns max propagation delay ensure reliable timing margin across 15 cm backplane traces loaded to 50 pF. |
Use Scenario: Interfacing modern microcontroller GPIOs to standard Centronics parallel printer ports requiring TTL-level handshaking and data latching. IC Role / Device Role / Timing Role: Data latch buffer that presents high-impedance when printer is not selected, preventing bus contention. Use Value: Dual G1/G2 enable allows separate control of data and strobe lines using standard IEEE 1284 handshake signals. |
| Test Equipment Digital Pattern Generator | Automotive Body Control Module I/O Expansion |
|
Use Scenario: Driving calibrated digital stimulus patterns onto DUT input pins during functional test of ASICs and FPGAs. IC Role / Device Role / Timing Role: Precision timing buffer ensuring sub-25 ns edge fidelity and minimal skew across eight parallel channels. Use Value: 14 ns typical tPLH/tPHL and matched rise/fall times (<15 ns at 6 V) preserve pattern integrity at 20 MHz clock rates. |
Use Scenario: Expanding GPIO count for door lock, window lift, and mirror control signals in automotive BCMs operating from 5 V supply. IC Role / Device Role / Timing Role: Level-translating and current-boosting interface between low-drive MCU pins and resistive-inductive loads. Use Value: 2–6 V operation accommodates nominal 5 V rail with ±10% tolerance; 80 µA ICC enables low-quiescent design for always-on modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal non-inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC244N | Inverting/non-inverting dual quad-buffer; no dual-enable NOR logic - uses single OE\ per group | Requires separate OE\ control per 4-bit group; less flexible for shared-bus arbitration | Select when cost-sensitive designs use discrete enable logic or require split 4-bit control |
| 74LCX541MTCX | Lower VCC range (2.0–3.6 V only); higher speed (tPD = 5.5 ns typ at 3.3 V); 3.6 V tolerant inputs | Not suitable for 5 V systems; optimized for low-voltage portable electronics, not industrial 5 V buses | Select for 3.3 V-only systems where speed >10 MHz and input tolerance to 5 V signals are required |
Compared with SN74HC244N and 74LCX541MTCX, the MM74HC541SJX uniquely combines 2–6 V operation, dual-NOR 3-STATE enable, and proven industrial temperature reliability - making it optimal for mixed-voltage, bus-arbitrated designs where pin-level control simplicity and legacy compatibility are critical.
Availability
MM74HC541SJX is available at Aetrix Electronics and suitable for industrial automation, test equipment, and automotive body control applications requiring stable component supply and long-term manufacturing continuity.
Supply support for MM74HC541SJX 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
Fairchild Semiconductor was a U.S.-based semiconductor company specializing in analog and mixed-signal ICs, acquired by ON Semiconductor in 2016; its legacy logic portfolio remains widely deployed in industrial and automotive systems.
The MM74HC541SJX belongs to the 74HC high-speed CMOS logic family, engineered for TTL-compatible performance with CMOS power efficiency - targeting bus interface, data routing, and I/O expansion in resource-constrained embedded platforms.
FAQ
What is the logic function of the MM74HC541SJX?
The MM74HC541SJX is a non-inverting octal 3-STATE buffer. Each of its eight channels passes input signals to corresponding outputs without inversion. Its outputs enter high-impedance state when either G1 or G2 enable pin is driven HIGH - implemented via internal NOR logic. This behavior is explicitly defined in the Fairchild DS005341 datasheet for MM74HC541SJX and distinguishes it from the inverting MM74HC540 variant.
Does the MM74HC541SJX support 3.3 V operation?
Yes, the MM74HC541SJX supports 3.3 V operation within its specified 2.0 V to 6.0 V supply range. At 3.3 V, it maintains guaranteed VOH ≥ 2.5 V and VOL ≤ 0.4 V under 6 mA load, with propagation delay typically under 25 ns (CL = 50 pF). This makes MM74HC541SJX interoperable with 3.3 V microcontrollers while retaining full 5 V tolerance on inputs when VCC = 3.3 V.
What package type is used for the MM74HC541SJX?
The MM74HC541SJX uses a 20-lead Small Outline Package (SOP), EIAJ TYPE II, 5.3 mm wide (Package Number M20D). It features gull-wing surface-mount leads, JEDEC-compliant dimensions, and is distinct from SOIC (M20B) and TSSOP (MTC20) variants - confirmed by Fairchild's ordering code table in DS005341 where "SJ" suffix denotes SOP packaging.
How does the 3-STATE enable logic work on the MM74HC541SJX?
The MM74HC541SJX uses a two-input NOR gate to control all eight outputs: if G1 = HIGH or G2 = HIGH, all Y1–Y8 outputs go to high-impedance state. Only when both G1 and G2 are LOW do outputs actively drive. This differs from single-OE\ buffers and allows flexible bus arbitration - for example, G1 can serve as system-wide enable while G2 acts as local module select, both valid for MM74HC541SJX per its functional description.
Is the MM74HC541SJX pin-compatible with the MM74HC540SJX?
No, the MM74HC541SJX is not pin-compatible with the MM74HC540SJX. Although both share identical 20-pin SOP packaging and pinout numbering, their logic functions differ: MM74HC541SJX is non-inverting, while MM74HC540SJX is inverting. Swapping them without logic inversion elsewhere will invert all eight data bits - a functional mismatch explicitly noted in the Fairchild datasheet's General Description section for MM74HC541SJX.
MM74HC541SJX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74HC
- 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:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOP
MM74HC541SJX FAQ
1.How can I place an order for MM74HC541SJX through Aetrix?
Please submit a Request for Quotation (RFQ) for MM74HC541SJX 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 MM74HC541SJX reliable?
The price and inventory of MM74HC541SJX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM74HC541SJX is usually 5 days.
3.What payment methods are accepted for MM74HC541SJX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM74HC541SJX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM74HC541SJX?
MM74HC541SJX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM74HC541SJX 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 MM74HC541SJX?
For technical support, including MM74HC541SJX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM74HC541SJX requirements.
6.How does Aetrix verify that MM74HC541SJX is sourced from the original manufacturer or authorized distributors?
All MM74HC541SJX 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 MM74HC541SJX meets industry standards.
7.What is the process for return or replacement of MM74HC541SJX?
All MM74HC541SJX units undergo pre-shipment inspection (PSI). If there is an issue with MM74HC541SJX, 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 MM74HC541SJX part is unused and in its original packaging.
Return procedure for MM74HC541SJX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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