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Texas Instruments SN74HC541DB
- Part No.:
- SN74HC541DB
- Manufacturer:
- Texas Instruments
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
SN74HC541DB.pdf
- Description:
- IC BUFFER NON-INVERT 6V 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,830
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Product details
Overview
SN74HC541DB from NXP Semiconductors is an octal non-inverting 3-state buffer/line driver in SSOP20 package, operating from −40 °C to +125 °C with 6 V max supply voltage and 7.8 mA output drive capability. It features dual active-low output enables (OE1, OE2) and CMOS-level inputs for bus isolation and data routing in digital systems.
For engineers reviewing the SN74HC541DB datasheet, SN74HC541DB pinout, SN74HC541DB application, or SN74HC541DB equivalent, this page delivers verified electrical specs, functional context, real-world use cases, and validated alternative options for industrial control, memory interfacing, and logic-level translation designs.
Technical Context
The SN74HC541DB implements eight identical non-inverting buffer circuits, each with independent input-to-output signal path and shared 3-state control via two active-low enable inputs. Its CMOS input structure provides high noise immunity and low static current draw.
Each output supports high-impedance OFF-state when either OE1 or OE2 is HIGH, enabling bidirectional bus arbitration. Input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.0 V to 6.0 V - supports mixed-voltage system interfacing and legacy 5 V logic compatibility |
| Output Drive | ±7.8 mA at VCC = 6.0 V - sufficient to drive standard TTL loads or multiple CMOS inputs |
| Propagation Delay | 10 ns typical at VCC = 6.0 V - enables reliable operation in high-speed address/data bus applications up to ~50 MHz |
| Input Thresholds | VIH = 4.2 V, VIL = 1.8 V at VCC = 6.0 V - ensures robust CMOS-level recognition with >1.2 V noise margin |
| Operating Temp | −40 °C to +125 °C - qualified for extended industrial and under-hood automotive auxiliary functions |
| ESD Rating | HBM >2000 V - protects against handling damage during PCB assembly and field service |
Pinout & Package
SN74HC541DB uses a plastic shrink small outline package (SSOP20) with 20 leads, 5.3 mm body width, and 0.65 mm lead pitch per SOT339-1 specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE1) | Active-low output enable | Asserting LOW enables all Y0–Y7 outputs; HIGH forces all outputs to high-impedance state |
| 2–9 (A0–A7) | Data inputs | Non-inverting inputs driving corresponding Y0–Y7 outputs; accept CMOS-level signals |
| 10 (GND) | Ground reference | 0 V return path for all internal circuitry and output current sinks |
| 11–18 (Y0–Y7) | Data outputs | Buffered, non-inverted copies of A0–A7; tri-state capable with ±7.8 mA drive |
| 19 (OE2) | Active-low output enable | Second independent enable; OR logic with OE1 - either HIGH disables all outputs |
| 20 (VCC) | Positive supply | Primary power rail; supports 2.0–6.0 V operation with internal regulation for stable logic thresholds |
Key Features
| Feature | Design Value |
|---|---|
| Dual 3-state enables | Independent OE1/OE2 pins allow flexible bus arbitration and hierarchical enable control without external logic |
| CMOS input compatibility | VIH/VIL thresholds track VCC, enabling reliable interfacing across 2.0–6.0 V supply range |
| Input clamp diodes | Enable safe connection to overvoltage sources (e.g., 12 V sensors) using series current-limiting resistors |
| Low quiescent current | ICC ≤ 160 μA at +125 °C - minimizes standby power in battery-backed or thermally constrained systems |
| JEDEC Std 7A compliance | Ensures interoperability with industry-standard logic families and test equipment interfaces |
Applications
| Industrial PLC I/O Expansion | Microcontroller Address Bus Buffering |
|---|---|
Use Scenario: Isolating microcontroller GPIO banks from high-noise factory floor sensor/actuator lines while maintaining signal integrity. IC Role / Device Role / Timing Role: Bidirectional bus buffer with 3-state control synchronizing with controller read/write strobes. Use Value: Prevents back-driving and ground bounce during hot-swap I/O module insertion; 10 ns propagation delay preserves timing margins in 20 MHz control loops. |
Use Scenario: Driving long PCB traces between MCU and external SRAM or flash memory chips in embedded instrumentation. IC Role / Device Role / Timing Role: Non-inverting line driver strengthening address/data signals across 10+ cm routing paths. Use Value: 7.8 mA drive capability maintains clean edges on 50 pF net capacitance; SSOP20 footprint saves board space versus SO20 alternatives. |
| Legacy System Logic Translation | Test Equipment Signal Conditioning |
Use Scenario: Interfacing modern 3.3 V FPGA I/O to legacy 5 V parallel peripherals like printers or industrial displays. IC Role / Device Role / Timing Role: Level-shifting buffer with CMOS input thresholds compatible with both voltage domains. Use Value: VIH = 4.2 V at VCC = 6.0 V ensures reliable recognition of 5 V TTL highs; no external level shifters required. |
Use Scenario: Gating and conditioning digital stimulus signals in automated test equipment before delivery to DUT. IC Role / Device Role / Timing Role: Precision-controlled 3-state switch enabling/disabling signal paths under microprocessor command. Use Value: 16 ns disable time (VCC = 6.0 V) allows sub-60 ns signal blanking windows; HBM >2000 V withstands ESD events during probe contact. |
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 |
|---|---|---|---|
| SN74HCT541DB | TTL-compatible inputs (VIH = 2.0 V min), otherwise identical pinout, timing, and drive strength | Better suited for direct interface with 5 V TTL logic families without level shifting | Select when driving legacy TTL loads or receiving signals from 5 V microcontrollers with weak pull-ups |
| MC74HC541ADT | Same function and specs but in TSSOP20 (SOT360-1) package with 4.4 mm body width | Offers tighter board space utilization where SSOP20 footprint is insufficient | Choose for ultra-dense layouts requiring minimal PCB area; verify thermal derating at >60 °C ambient |
Compared with SN74HC541DB, SN74HCT541DB eases integration with TTL sources but sacrifices some noise margin, while MC74HC541ADT reduces footprint by 17% at the cost of lower thermal mass and higher trace density requirements.
Availability
SN74HC541DB is available at Aetrix Electronics and suitable for industrial automation, embedded memory expansion, and test equipment design requiring stable component supply across extended temperature ranges.
Supply support for SN74HC541DB 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The SN74HC541DB belongs to NXP's 74HC logic family, designed for high-noise-immunity, low-power digital interfacing in harsh industrial environments with extended temperature operation.
FAQ
What is the maximum supply voltage rating for SN74HC541DB?
The absolute maximum supply voltage for SN74HC541DB is +7.0 V, but the recommended operating range is 2.0 V to 6.0 V. Operation above 6.0 V risks exceeding internal oxide breakdown limits and is not guaranteed for functionality or reliability. The SN74HC541DB datasheet specifies 6.0 V as the upper limit for normal operation with full parameter guarantees across −40 °C to +125 °C.
Does SN74HC541DB support true bidirectional data flow?
No, SN74HC541DB is a unidirectional non-inverting buffer: signals flow only from A0–A7 inputs to Y0–Y7 outputs. It does not support automatic direction sensing or internal bus transceivers. Bidirectional operation requires external control of OE1/OE2 and complementary circuitry - the SN74HC541DB itself provides only controlled 3-state output gating, not data direction reversal.
How do the dual output enables (OE1 and OE2) interact in SN74HC541DB?
In SN74HC541DB, OE1 and OE2 operate as OR-connected active-low enables: if either pin is HIGH, all eight outputs enter high-impedance state. Both must be LOW for outputs to reflect their respective A0–A7 inputs. This architecture allows hierarchical enable schemes - for example, OE1 controlled by system-level bus grant, OE2 by local peripheral select - without external logic gates.
Can SN74HC541DB safely interface with 12 V sensor signals?
Yes - SN74HC541DB includes input clamp diodes that permit safe connection to voltages exceeding VCC when used with appropriate series current-limiting resistors. For a 12 V source and VCC = 5 V, a minimum 350 Ω resistor limits clamp current to ≤20 mA per IEC 60134 limiting values. This capability is explicitly documented in the SN74HC541DB datasheet under "Features and benefits" and "Limiting values".
What is the thermal derating behavior of SN74HC541DB in SSOP20 package?
For the SSOP20 package (SOT339-1), SN74HC541DB total power dissipation derates linearly above +60 °C at 5.5 mW/K. At +125 °C ambient, maximum allowable Ptot drops to approximately 310 mW from the 500 mW rated value at +25 °C. This derating is specified in the "Limiting values" section of the SN74HC541DB datasheet and must be applied when calculating worst-case junction temperature in thermally constrained designs.
SN74HC541DB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 20-SSOP (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-SSOP
SN74HC541DB FAQ
1.How can I place an order for SN74HC541DB through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74HC541DB 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 SN74HC541DB reliable?
The price and inventory of SN74HC541DB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74HC541DB is usually 5 days.
3.What payment methods are accepted for SN74HC541DB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74HC541DB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74HC541DB?
SN74HC541DB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74HC541DB 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 SN74HC541DB?
For technical support, including SN74HC541DB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74HC541DB requirements.
6.How does Aetrix verify that SN74HC541DB is sourced from the original manufacturer or authorized distributors?
All SN74HC541DB 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 SN74HC541DB meets industry standards.
7.What is the process for return or replacement of SN74HC541DB?
All SN74HC541DB units undergo pre-shipment inspection (PSI). If there is an issue with SN74HC541DB, 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 SN74HC541DB part is unused and in its original packaging.
Return procedure for SN74HC541DB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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