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Nexperia USA Inc. 74HCT541PW,112
- Part No.:
- 74HCT541PW,112
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HCT541PW,112.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,716
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Product details
Overview
74HCT541PW,112 from Nexperia is an octal non-inverting 3-state buffer/line driver in TSSOP20 package, operating from 4.5 V to 5.5 V with TTL-compatible inputs and ±6 mA output drive capability. It features dual active-low output enables (OE1, OE2), supports -40 °C to +125 °C industrial temperature range, and delivers 15 ns typical propagation delay at VCC = 4.5 V, CL = 50 pF - used for bidirectional bus interfacing and address/data line driving in microcontroller peripheral expansion.
For engineers reviewing the 74HCT541PW,112 datasheet, 74HCT541PW,112 pinout, 74HCT541PW,112 application, or 74HCT541PW,112 equivalent, key selection criteria include TTL-level input compatibility, dual independent 3-state control, guaranteed high-impedance isolation during disable, and thermal performance in compact TSSOP20 packaging for space-constrained PCB layouts.
Technical Context
The device implements eight identical non-inverting buffer circuits, each with independent output enable logic controlled by OE1 and OE2 - both must be LOW to activate outputs; either HIGH forces all Y0–Y7 into high-impedance state. Input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors.
Its TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5 V–5.5 V) ensure direct connection to legacy 5 V logic families, while CMOS output structure provides rail-to-rail swing and low static current (ICC ≤ 160 μA over full temperature range).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - matches standard 5 V TTL systems without level translation |
| Input Logic Type | TTL-compatible - accepts 0.8 V/2.0 V thresholds, eliminating need for external translators when driving from 74LS or microcontroller GPIO |
| Output Drive | ±6.0 mA at VCC = 4.5 V - sufficient to drive 10 LSTTL loads or terminate 50 Ω transmission lines |
| Propagation Delay | 15 ns typ (An → Yn, VCC = 4.5 V, CL = 50 pF) - enables reliable operation up to ~30 MHz bus clock rates |
| Enable/Disable Time | 21 ns typ (OEn → Yn transition, VCC = 4.5 V) - supports fast bus arbitration and dynamic bus sharing |
| Operating Temperature | -40 °C to +125 °C - qualified for industrial and extended-temperature embedded control applications |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - robust handling in manual assembly and field-replaceable module environments |
Pinout & Package
TSSOP20 package (SOT360-1), 4.4 mm body width, 0.65 mm lead pitch, surface-mount, moisture sensitivity level 1 (MSL1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE1, OE2 | Active-low output enable inputs - independent control of 3-state output drivers; either HIGH disables all eight outputs |
| 2–9 | A0–A7 | Non-inverting data inputs - directly connect to source bus lines (e.g., MCU data/address pins) |
| 10 | GND | Ground reference - requires low-inductance connection to system ground plane for noise immunity |
| 11–18 | Y0–Y7 | 3-state buffered outputs - drive destination bus; high-impedance when OE1 or OE2 is HIGH |
| 20 | VCC | Positive supply - bypass with 100 nF ceramic capacitor near pin for stable switching operation |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 3-state control | OE1 and OE2 provide redundant or split-bus enable logic - supports fault-tolerant bus architectures and multi-master arbitration |
| TTL-compatible input thresholds | VIH ≥ 2.0 V, VIL ≤ 0.8 V at 5 V - ensures interoperability with legacy 74LS, 74F, and 5 V microcontrollers without pull-ups or translators |
| Input clamp diodes | Enable safe interface to signals up to VCC + 0.5 V using series current-limiting resistors - simplifies mixed-voltage board design |
| High noise immunity | Typical noise margin > 0.8 V at VCC = 5 V - maintains signal integrity in electrically noisy industrial environments |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II Level B - prevents destructive latch-up during transient overvoltage events |
Applications
| Industrial PLC I/O Expansion | Microcontroller Address Bus Buffering |
|---|---|
Use Scenario: Isolating and driving parallel I/O lines between a main controller and modular I/O racks in programmable logic controllers. IC Role / Device Role / Timing Role: Non-inverting 3-state buffer enabling bidirectional data flow control and hot-swap-safe bus isolation. Use Value: Dual OE inputs allow independent enable/disable of master and slave sides during configuration changes, preventing bus contention during rack reconfiguration. | Use Scenario: Extending the address/data bus of an 8-bit microcontroller (e.g., ATmega128, PIC18F) to external memory or peripherals. IC Role / Device Role / Timing Role: Address latch driver with precise timing control - synchronizes address setup before memory access strobes. Use Value: 15 ns propagation delay ensures address stability meets tAVQV requirements of SRAM and EPROM devices operating at ≤30 MHz. |
| Legacy System Bus Interface | Test Equipment Signal Conditioning |
Use Scenario: Interfacing modern FPGA-based controllers to legacy 5 V TTL backplanes (e.g., ISA, VMEbus derivatives). IC Role / Device Role / Timing Role: Level-shifting and fanout buffer - translates FPGA 3.3 V LVTTL outputs to full 5 V TTL swing while driving multiple loads. Use Value: TTL-compatible inputs accept FPGA output voltages directly; ±6 mA drive sustains signal integrity across 10+ inch ribbon cables. | Use Scenario: Conditioning digital stimulus and response signals in automated test equipment (ATE) channel cards. IC Role / Device Role / Timing Role: Output isolation and impedance matching buffer - decouples DUT signals from measurement circuitry. Use Value: High-impedance OFF-state (< ±10 μA leakage) eliminates loading during signal acquisition phases, preserving measurement accuracy. |
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 |
|---|---|---|---|
| SN74HCT541PWR | TI part in TSSOP20; VIH/VIL thresholds match 74HCT541PW,112 but ICC max is 100 μA (vs. 160 μA) at +125 °C | Same functional behavior; tighter ICC spec suits ultra-low-power standby modes | Select when lower quiescent current at temperature extremes is prioritized over absolute maximum drive margin |
| 74LCX541MTCX | ON Semiconductor part; operates down to 2.0 V, supports 3.3 V/5 V mixed-mode I/O, but propagation delay is 2.5 ns slower at 5 V | Enables voltage translation between 3.3 V logic and 5 V buses; not drop-in for pure 5 V systems | Select only when dual-supply operation or 3.3 V compatibility is required - otherwise introduces unnecessary complexity |
Compared with SN74HCT541PWR and 74LCX541MTCX, the 74HCT541PW,112 offers optimal balance of proven industrial temperature reliability, strict TTL input compatibility, and consistent 15 ns timing - making it preferred for cost-sensitive, high-volume 5 V embedded control where design reuse and supply chain stability are critical.
Availability
74HCT541PW,112 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, microcontroller address bus buffering, and legacy system bus interface requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT541PW,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 specializing in high-performance, high-reliability logic, analog, and discrete components - headquartered in Nijmegen, Netherlands, with manufacturing in Europe and Asia.
The 74HCT series is designed specifically for TTL-to-CMOS interfacing in industrial and automotive-qualified applications, emphasizing robustness, wide temperature operation, and compatibility with legacy 5 V logic families.
FAQ
Can 74HCT541PW,112 operate reliably at 4.2 V supply?
No - the 74HCT541PW,112 is specified only for 4.5 V to 5.5 V operation per Table 5. At 4.2 V, VIH minimum (2.0 V) remains met, but VOH drops below 3.84 V (min at 4.5 V), risking marginal HIGH-level recognition by downstream TTL receivers. Operation outside recommended conditions voids parametric guarantees and may cause timing violations or increased ICC.
What is the maximum capacitive load this device can drive without signal degradation?
The device is characterized up to 50 pF (Table 7), with 15 ns typical propagation delay. Driving >50 pF increases rise/fall times and propagation delay linearly - e.g., 100 pF load adds ~5 ns to tt and tpd. For reliable 30 MHz operation, total load (including trace capacitance) should remain ≤40 pF; above that, series termination or buffer staging is recommended.
Is there any difference in functionality between 74HCT541PW and 74HCT541PW,112?
No functional difference - ",112" is Nexperia's tape-and-reel ordering suffix indicating 2000-unit reel packaging. Electrical, thermal, and pinout specifications are identical to 74HCT541PW. The base part number 74HCT541PW defines the silicon and package; ,112 denotes packaging format only.
Does this device support hot insertion in live backplanes?
It supports hot insertion only with proper system-level design: input clamp diodes allow safe biasing above VCC when current-limited (e.g., 1 kΩ series resistor), and 3-state outputs prevent bus contention during insertion. However, GND/VCC sequencing must be controlled externally - the device itself has no power-on reset or hot-swap protection circuitry.
74HCT541PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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-TSSOP
74HCT541PW,112 FAQ
1.How can I place an order for 74HCT541PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT541PW,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 74HCT541PW,112 reliable?
The price and inventory of 74HCT541PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT541PW,112 is usually 5 days.
3.What payment methods are accepted for 74HCT541PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT541PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT541PW,112?
74HCT541PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT541PW,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 74HCT541PW,112?
For technical support, including 74HCT541PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT541PW,112 requirements.
6.How does Aetrix verify that 74HCT541PW,112 is sourced from the original manufacturer or authorized distributors?
All 74HCT541PW,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 74HCT541PW,112 meets industry standards.
7.What is the process for return or replacement of 74HCT541PW,112?
All 74HCT541PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT541PW,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 74HCT541PW,112 part is unused and in its original packaging.
Return procedure for 74HCT541PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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