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Nexperia USA Inc. 74HCT541DB,112
- Part No.:
- 74HCT541DB,112
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74HCT541DB,112.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,652
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Product details
Overview
74HCT541DB,112 from Nexperia is an octal non-inverting 3-state buffer/line driver with TTL-compatible inputs, operating from 4.5 V to 5.5 V, featuring dual active-low output enables (OE1, OE2), ±6 mA output drive at VCC = 4.5 V, and operation over -40 °C to +125 °C - used in bidirectional bus interfacing and address/data line driving in industrial microcontroller systems.
For engineers reviewing the 74HCT541DB,112 datasheet, 74HCT541DB,112 pinout, 74HCT541DB,112 application, or 74HCT541DB,112 equivalent, key selection criteria include TTL-level input compatibility, dual independent 3-state control, SO20 package thermal derating above 109 °C, and guaranteed propagation delay ≤28 ns at 4.5 V with 50 pF load.
Technical Context
This device implements eight identical non-inverting buffer circuits, each with independent output enable control via two shared active-low signals (OE1 and OE2). All outputs enter high-impedance state when either enable is HIGH, supporting flexible bus arbitration.
Input clamping diodes allow safe interfacing to voltages exceeding VCC when current-limiting resistors are used. Static characteristics confirm VIH = 2.0 V (min) and VIL = 0.8 V (max) at VCC = 4.5–5.5 V, ensuring robust TTL logic level recognition across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with standard 5 V TTL and mixed-voltage industrial systems. |
| Input Logic Type | TTL-compatible - accepts standard 5 V TTL thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V), eliminating level-shifting in legacy designs. |
| Output Drive | ±6.0 mA at VCC = 4.5 V - sufficient to drive 50 pF loads with <28 ns propagation delay, supporting moderate-speed bus loading. |
| Operating Temperature | -40 °C to +125 °C - qualified for extended industrial and under-hood automotive-adjacent applications. |
| Propagation Delay | 15 ns (typ), 42 ns (max) at VCC = 4.5 V, CL = 50 pF - enables reliable timing in sub-25 MHz digital control buses. |
| 3-State Enable Time | 21 ns (typ), 53 ns (max) - supports fast bus turnaround in multiplexed address/data architectures. |
| Power Dissipation | 39 pF CPD - enables accurate dynamic power estimation (PD = CPD × VCC² × fi × N) for thermal design. |
Pinout & Package
SOT163-1 (SO20) plastic small outline package, 20-pin, 7.5 mm body width, 1.27 mm pitch; JEDEC MS-013 compliant; thermal resistance θJA = 80 K/W (typ), derates linearly at 12.3 mW/K above 109 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE1, OE2 | Active-low output enable inputs - either HIGH forces all eight Yn outputs into high-impedance state. |
| 2–9 | A0–A7 | Non-inverting data inputs - directly pass logic state to corresponding Yn outputs when both OEs are LOW. |
| 10 | GND | Ground reference - must be low-impedance connection to minimize switching noise coupling. |
| 11–18 | Y0–Y7 | 3-state buffered outputs - mirror A0–A7 when OE1=OE2=LOW; high-Z otherwise. |
| 20 | VCC | Positive supply - decoupling capacitor (100 nF ceramic) required within 10 mm of this pin for stable operation. |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range | 4.5–5.5 V - eliminates need for dedicated 5 V regulators in mixed-supply systems. |
| Input clamp diodes | Integrated - permits safe interface to signals up to VCC + 0.5 V using external current-limiting resistors. |
| Latch-up immunity | >100 mA per JESD78 Class II Level B - ensures robustness against transient-induced latch-up in noisy environments. |
| ESD protection | HBM >2000 V, CDM >1000 V - reduces risk of handling damage during PCB assembly and field service. |
| CMOS power efficiency | ICC ≤ 8 μA (typ) at VCC = 5.5 V - enables low-quiescent-current operation in always-on industrial monitoring nodes. |
Applications
| Industrial PLC I/O Expansion | Legacy Microcontroller Bus Interface |
|---|---|
|
Use Scenario: Expanding GPIO count on a Cortex-M4-based PLC controller by buffering address and data lines to peripheral ICs. IC Role / Device Role / Timing Role: Non-inverting 3-state buffer enabling time-multiplexed access to multiple memory-mapped peripherals without contention. Use Value: Dual OE pins allow independent gating of two 4-bit nibbles, reducing external logic and PCB routing complexity. |
Use Scenario: Interfacing an 8051 microcontroller's P0 port to external SRAM and I/O expanders in a legacy instrumentation design. IC Role / Device Role / Timing Role: Bidirectional bus driver with TTL-compatible inputs, synchronizing with 12 MHz system clock timing margins. Use Value: Guaranteed tpd ≤ 42 ns at 5 V ensures setup/hold compliance for 25 MHz bus cycles with 50 pF trace capacitance. |
| Automotive Body Control Module | Test Equipment Signal Conditioning |
|
Use Scenario: Driving LED segment displays and relay drivers from a CAN-connected MCU in a body control unit operating at 125 °C ambient. IC Role / Device Role / Timing Role: High-temp-stable buffer isolating MCU GPIOs from inductive loads and EMI-prone wiring harnesses. Use Value: Full -40 °C to +125 °C specification and 100 mA latch-up immunity prevent field failures in under-dash environments. |
Use Scenario: Level-shifting and fan-out amplification of digital test patterns from FPGA-based ATE to DUT input pins. IC Role / Device Role / Timing Role: Low-skew, non-inverting repeater with matched enable-to-output timing for synchronized stimulus delivery. Use Value: Identical ten/tdis (21–53 ns) ensures deterministic bus release timing across all eight channels during pattern transitions. |
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 |
|---|---|---|---|
| SN74HCT541N | Dual in-line package (DIP-20); higher θJA (~100 K/W); no SO20 footprint compatibility. | Prototyping and through-hole PCBs only; unsuitable for surface-mount production with SO20 land pattern. | Select when hand-soldering or breadboarding is required; verify thermal margin at full load in still air. |
| 74LVC541APW | Lower VCC range (1.65–3.6 V); CMOS inputs; 32 mA drive; TSSOP20 package. | Designed for 3.3 V systems; incompatible with 5 V TTL inputs without level translation. | Choose only for new 3.3 V designs requiring higher drive strength; not a drop-in replacement for 5 V TTL interfaces. |
Compared with SN74HCT541N and 74LVC541APW, the 74HCT541DB,112 uniquely combines 5 V TTL compatibility, SO20 surface-mount packaging, and extended temperature qualification - making it the sole option for volume-manufactured industrial controllers requiring direct legacy bus interfacing and thermal reliability up to 125 °C.
Availability
74HCT541DB,112 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, legacy microcontroller bus interface, and automotive body control module designs requiring stable component supply, long-term lifecycle support, and guaranteed SO20 package availability.
Supply support for 74HCT541DB,112 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
Nexperia is a global semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET devices optimized for efficiency, miniaturization, and robustness in high-volume industrial and automotive applications.
The 74HCT series targets TTL-compatible logic interfacing in industrial control and legacy system upgrades, emphasizing wide temperature operation, noise immunity, and JEDEC-compliant interoperability without requiring redesign of existing 5 V signal chains.
FAQ
What is the maximum output current per pin for 74HCT541DB,112?
The absolute maximum DC output current per pin is ±35 mA, but the recommended operating condition specifies ±6.0 mA at VCC = 4.5 V for guaranteed timing and voltage levels. Sustained operation above ±6 mA may increase propagation delay and reduce noise margin, especially at elevated temperatures.
Can OE1 and OE2 be tied together for single-enable operation?
Yes - OE1 and OE2 can be connected to a common control signal. The functional table confirms that a HIGH on either enable forces all outputs to high-impedance, so tying them simplifies control logic while preserving full 3-state functionality with one net.
Is 74HCT541DB,112 pin-compatible with 74HC541DB variants?
No - although both share the same SO20 pinout, 74HC541DB uses CMOS input thresholds (VIH ≥ 3.15 V at VCC = 4.5 V), whereas 74HCT541DB,112 requires only VIH ≥ 2.0 V. Swapping them risks logic misreads in TTL-driven systems due to insufficient input high voltage margin.
Does this device require external pull-up or pull-down resistors on OE pins?
No - OE1 and OE2 have no internal pull resistors and must be actively driven. Leaving them floating risks undefined output states; a 10 kΩ pull-down resistor is recommended if the controlling logic cannot guarantee a defined LOW during power-up or reset.
74HCT541DB,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SSOP
74HCT541DB,112 FAQ
1.How can I place an order for 74HCT541DB,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT541DB,112 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 74HCT541DB,112 reliable?
The price and inventory of 74HCT541DB,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT541DB,112 is usually 5 days.
3.What payment methods are accepted for 74HCT541DB,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT541DB,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT541DB,112?
74HCT541DB,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT541DB,112 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 74HCT541DB,112?
For technical support, including 74HCT541DB,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT541DB,112 requirements.
6.How does Aetrix verify that 74HCT541DB,112 is sourced from the original manufacturer or authorized distributors?
All 74HCT541DB,112 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 74HCT541DB,112 meets industry standards.
7.What is the process for return or replacement of 74HCT541DB,112?
All 74HCT541DB,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT541DB,112, 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 74HCT541DB,112 part is unused and in its original packaging.
Return procedure for 74HCT541DB,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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