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NXP Semiconductors 74ABT541DB,112
- Part No.:
- 74ABT541DB,112
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74ABT541DB,112.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,103
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Product details
Overview
74ABT541DB,112 from NXP Semiconductors (formerly Philips) is an octal 3-state buffer/line driver in a 20-pin SSOP package, designed for high-speed bus interface applications. It provides 64mA sink and 32mA source output drive, 2.9ns typical propagation delay at 5V, and operates across –40°C to +85°C. It is used in microprocessor address/data bus buffering and memory expansion systems.
For engineers reviewing the 74ABT541DB,112 datasheet, 74ABT541DB,112 pinout, 74ABT541DB,112 application, or 74ABT541DB,112 equivalent, key selection criteria include output drive strength, 3-state enable timing (tPZH/tPHZ), input/output capacitance (4pF/7pF), power-up 3-state behavior, and compatibility with 5V TTL logic families.
Technical Context
The 74ABT541DB,112 implements dual independent 3-state enables (OE0 and OE1) controlling eight non-inverting outputs (Y0–Y7) driven by corresponding inputs (A0–A7). Its BiCMOS architecture delivers low static current (500nA in 3-state) while maintaining high-speed performance under 50pF load.
It supports live insertion/extraction and includes latch-up protection (>500mA) and ESD robustness (>2000V HBM). Input voltage range extends to –1.2V to +7.0V, and absolute maximum VCC is +7.0V, enabling safe operation during power sequencing and transient conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5V to 5.5V - Ensures compatibility with standard 5V TTL and CMOS systems without level-shifting. |
| Propagation Delay (tPLH/tPHL) | 2.9ns typical at CL = 50pF - Enables reliable operation in high-frequency bus systems up to ~200MHz clock domains. |
| Output Drive | Sinks 64mA / Sources 32mA - Drives multiple TTL loads or long PCB traces without external buffers. |
| Input Capacitance | 4pF - Minimizes loading on upstream drivers and preserves signal edge integrity. |
| 3-State Leakage (IOZL/IOZH) | ±50µA max - Prevents unintended current paths when outputs are disabled in dense bus configurations. |
| Operating Temperature | –40°C to +85°C - Qualified for industrial-grade embedded control and communication equipment. |
Pinout & Package
74ABT541DB,112 is housed in a 20-pin plastic shrink small outline package (SSOP), body width 5.3 mm, lead pitch 0.65 mm (SOT339-1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE0, OE1 | Independent 3-state enable inputs - Active-low control allows selective activation of output groups for bus arbitration. |
| 2–9 | A0–A7 | Data inputs - Non-inverting inputs aligned on one side of package to simplify routing to microprocessor or FPGA buses. |
| 11–18 | Y0–Y7 | Data outputs - High-drive outputs placed opposite inputs to minimize crosstalk and support compact PCB layout. |
| 10 | GND | Ground reference - Dedicated ground pin reduces noise coupling in high-speed switching environments. |
| 20 | VCC | Positive supply - Single 5V rail simplifies power delivery; internal decoupling recommended near pin 20. |
Key Features
| Feature | Design Value |
|---|---|
| Power-up 3-State | Outputs remain in high-impedance state during VCC ramp-up - prevents bus contention at power-on. |
| Live Insertion Support | Withstands hot-plug events without latch-up - enables use in modular backplane and field-replaceable unit designs. |
| Latch-up Immunity | Exceeds 500mA per JEDEC JC40.2 - ensures robustness against transient overcurrent in noisy industrial environments. |
| ESD Protection | 2000V HBM / 200V MM - eliminates need for external ESD protection in board-level I/O interfaces. |
| Efficient Pinout | Inputs and outputs segregated on opposing sides - reduces trace length and layer count in dense 5V bus layouts. |
Applications
| Microprocessor Bus Buffering | Memory Expansion Interface |
|---|---|
Use Scenario: Isolating and driving address/data lines between a 80C51 or Z80 CPU and peripheral ICs on a shared bus. IC Role / Device Role / Timing Role: Non-inverting 3-state buffer providing fan-out extension and bus contention control via OE0/OE1. Use Value: 64mA sink capability drives up to 10 standard TTL loads; 2.9ns delay maintains setup/hold timing margins at 12MHz bus clocks. |
Use Scenario: Interfacing SRAM or EPROM chips to a microcontroller with limited drive strength. IC Role / Device Role / Timing Role: Bidirectional bus driver enabling clean read/write transitions with controlled enable/disable timing. Use Value: tPZH ≤ 4.6ns and tPHZ ≤ 6.7ns ensure fast bus release and acquisition, minimizing memory access dead time. |
| Industrial Control Backplane | Legacy System Signal Conditioning |
Use Scenario: Level-shifting and noise-immune signal distribution across a DIN-rail mounted PLC backplane. IC Role / Device Role / Timing Role: Robust 5V-tolerant buffer isolating field-side I/O modules from controller-side logic. Use Value: –40°C to +85°C rating and >500mA latch-up immunity support continuous operation in uncontrolled cabinet environments. |
Use Scenario: Replacing obsolete 74LS241 or 74F241 in legacy test equipment requiring drop-in 5V logic upgrades. IC Role / Device Role / Timing Role: Pin-compatible octal buffer delivering higher speed and lower power than bipolar predecessors. Use Value: 500nA ICCZ in 3-state reduces standby current by >95% versus 74LS241, extending system uptime in battery-backed units. |
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 |
|---|---|---|---|
| SN74ABT244N | Octal buffer with dual 4-bit enables (not individual A/B group enables); identical 64mA/32mA drive and 2.9ns delay. | Requires redesign of enable logic if separate A0–A3/Y0–Y3 and A4–A7/Y4–Y7 control is needed. | Select when simplified enable architecture suffices and DIP-20 packaging is preferred. |
| 74LVT244PW,118 | Lower VCC range (2.7–3.6V), 3.3V-only operation; 3.1ns delay; 32mA sink/source - not 5V compatible. | Not suitable for legacy 5V systems; requires level translation if interfacing with 5V peripherals. | Choose only for new 3.3V-only designs where power efficiency and smaller TSSOP-20 footprint are prioritized. |
Compared with SN74ABT244N and 74LVT244PW,118, the 74ABT541DB,112 uniquely supports independent dual-group 3-state control in a 5V system, making it optimal for bus arbitration schemes requiring granular output gating without additional logic.
Availability
74ABT541DB,112 is available at Aetrix Electronics and suitable for microprocessor bus buffering, memory expansion interface, and industrial control backplane applications requiring stable component supply and long-term industrial temperature support.
Supply support for 74ABT541DB,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
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Philips' pioneering logic IC development.
The 74ABT series was engineered for high-speed, low-power 5V bus interfacing in embedded controllers and industrial systems - emphasizing drive strength, timing predictability, and ruggedness over consumer-grade alternatives.
FAQ
What is the function of OE0 and OE1 on the 74ABT541DB,112?
The 74ABT541DB,112 features two independent active-low output enable inputs: OE0 controls Y0–Y3, and OE1 controls Y4–Y7. When both are low, all eight outputs are enabled; if either is high, its associated four outputs enter high-impedance state. This enables flexible bus segmentation without external logic, and is confirmed in the Function Table and Pin Description sections of the Philips 1998 datasheet.
Does the 74ABT541DB,112 support live insertion?
Yes, the 74ABT541DB,112 supports live insertion and extraction, as explicitly stated in the FEATURES section of the Philips datasheet. This capability is enabled by its BiCMOS design, latch-up protection (>500mA), and robust ESD tolerance (2000V HBM), allowing safe replacement in powered-backplane systems without shutdown.
What is the maximum output current the 74ABT541DB,112 can sink per pin?
The 74ABT541DB,112 can sink up to 64mA per output pin under recommended operating conditions (VCC = 4.5V, Tamb = –40°C to +85°C), as specified in the RECOMMENDED OPERATING CONDITIONS table. This value is validated across temperature and ensures reliable drive into multiple TTL loads or terminated transmission lines.
Is the 74ABT541DB,112 pin-compatible with the 74ABT241?
No - the 74ABT541DB,112 is not pin-compatible with the 74ABT241. While both are octal 3-state buffers, the 74ABT241 uses a single enable (OE) and different pin mapping (e.g., inputs and outputs interleaved). The 74ABT541DB,112 has dual enables (OE0/OE1) and segregated I/O placement (A0–A7 on left, Y0–Y7 on right), per the PIN CONFIGURATION diagram.
What package type does the 74ABT541DB,112 use?
The 74ABT541DB,112 uses a 20-pin plastic shrink small outline package (SSOP) with 0.65 mm lead pitch and 5.3 mm body width, designated SOT339-1 per Philips documentation. This surface-mount package supports automated assembly and offers better thermal performance than DIP variants while maintaining 5V logic compatibility.
74ABT541DB,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74ABT
- Package/Case:
- 20-SSOP (0.209", 5.30mm 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:
- 32mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SSOP
74ABT541DB,112 FAQ
1.How can I place an order for 74ABT541DB,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT541DB,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 74ABT541DB,112 reliable?
The price and inventory of 74ABT541DB,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT541DB,112 is usually 5 days.
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Once your 74ABT541DB,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 74ABT541DB,112?
For technical support, including 74ABT541DB,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT541DB,112 requirements.
6.How does Aetrix verify that 74ABT541DB,112 is sourced from the original manufacturer or authorized distributors?
All 74ABT541DB,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 74ABT541DB,112 meets industry standards.
7.What is the process for return or replacement of 74ABT541DB,112?
All 74ABT541DB,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT541DB,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 74ABT541DB,112 part is unused and in its original packaging.
Return procedure for 74ABT541DB,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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