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NXP Semiconductors 74ABT541D,623
- Part No.:
- 74ABT541D,623
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74ABT541D,623.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,787
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Product details
Overview
74ABT541D,623 from NXP Semiconductors (formerly Philips) is an octal 3-state buffer/line driver in a 20-pin SO package, operating from 4.5 V to 5.5 V, with 2.9 ns typical propagation delay (An→Yn), ±32 mA high-level and +64 mA low-level output drive, and designed for bus interface applications in industrial control and data acquisition systems.
For engineers reviewing the 74ABT541D,623 datasheet, 74ABT541D,623 pinout, 74ABT541D,623 application, or 74ABT541D,623 equivalent, key selection criteria include 3-state output current capability, power-up 3-state behavior, input/output pin separation for PCB layout, latch-up immunity (>500 mA), and compatibility with 5 V TTL/CMOS logic families.
Technical Context
The 74ABT541D,623 implements dual independent 3-state enables (OE0 and OE1) controlling eight non-inverting outputs (Y0–Y7) driven by eight inputs (A0–A7), with inputs and outputs placed on opposite sides of the SO package to minimize trace crosstalk. Its BiCMOS architecture delivers high-speed switching while maintaining low static current in 3-state mode (ICCZ = 500 nA at VCC = 5.5 V).
It supports live insertion/extraction and meets JEDEC JC40.2 latch-up standards (≥500 mA) and MIL-STD-883 ESD requirements (≥2000 V HBM, ≥200 V MM). The device operates across –40°C to +85°C and features input clamp voltage (VIK = –0.9 V) and guaranteed VIH/VIL thresholds (2.0 V / 0.8 V) for robust noise margin in noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures compatibility with standard 5 V logic rails and tolerance against supply ripple. |
| Propagation Delay | 2.9 ns typical (An→Yn, CL = 50 pF) - Enables reliable operation in high-speed address/data bus timing budgets. |
| Output Drive | Sinks 64 mA / sources 32 mA - Supports direct driving of multiple TTL loads or termination resistors without external buffers. |
| 3-State Leakage | ICCZ = 500 nA max at VCC = 5.5 V - Minimizes standby power in large-scale bus systems with many disabled drivers. |
| Input Capacitance | CIN = 4 pF - Reduces capacitive loading on upstream drivers and preserves signal edge integrity. |
| Operating Temperature | –40°C to +85°C - Qualified for use in industrial automation, motor control, and outdoor embedded equipment. |
| ESD Protection | ≥2000 V HBM, ≥200 V MM - Provides robust handling during assembly and field maintenance without additional protection circuitry. |
Pinout & Package
74ABT541D,623 is supplied in a 20-pin plastic small outline package (SO20, SOT163-1), 7.5 mm body width, with gull-wing leads and standard JEDEC MO-153 footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE0, OE1 | Independent 3-state enable inputs - Allows selective activation of output groups for time-multiplexed bus sharing. |
| 2–9 | A0–A7 | Data inputs - Positioned on left side for clean routing from microcontroller or FPGA data buses. |
| 11–18 | Y0–Y7 | Data outputs - Located on right side to enable parallel trace routing to bus lines with minimal skew. |
| 10 | GND | Ground reference - Shared return path for all I/O and supply currents; requires low-inductance connection. |
| 20 | VCC | Positive supply - Must be decoupled locally with 100 nF ceramic capacitor to suppress switching noise. |
Key Features
| Feature | Design Value |
|---|---|
| Octal 3-state buffer architecture | Enables bidirectional bus arbitration in shared-memory or peripheral expansion systems without external direction control. |
| Power-up 3-state | Prevents bus contention during system reset or power ramp-up by holding outputs in high-impedance until valid enable signals are applied. |
| Latch-up immunity >500 mA | Guarantees functional survival under transient overvoltage or ground-bounce events common in high-current industrial PCBs. |
| Live insertion/extraction support | Permits hot-swap replacement in modular backplane systems without powering down adjacent slots or risking damage. |
| Efficient pinout (I/O on opposite sides) | Reduces layer count and via usage in dense 4-layer PCB designs, lowering manufacturing cost and improving signal integrity. |
Applications
| Industrial PLC Backplane Interface | Microcontroller Bus Expansion |
|---|---|
|
Use Scenario: Interfacing a 16-bit microcontroller data bus to multiple I/O modules across a DIN-rail mounted PLC backplane. IC Role / Device Role / Timing Role: Bidirectional 3-state buffer isolating and driving address/data lines between CPU and peripheral cards. Use Value: 64 mA sink capability ensures stable logic levels across 30 cm ribbon-cable runs; dual OE pins allow staggered module addressing. |
Use Scenario: Expanding GPIO count of an ARM Cortex-M4 MCU by connecting parallel peripherals (ADC, DAC, display controller). IC Role / Device Role / Timing Role: Unidirectional level-shifting and fan-out buffer for multiplexed control/data signals. Use Value: 2.9 ns propagation delay maintains timing margins below 100 MHz bus clock; 4 pF input capacitance avoids degrading MCU output slew rate. |
| Test Equipment Signal Routing | Legacy System Bus Isolation |
|
Use Scenario: Configurable signal path selection in automated test equipment where DUT interfaces must be dynamically isolated. IC Role / Device Role / Timing Role: Controlled impedance switch enabling/disabling signal paths between instrument channels and DUT connectors. Use Value: Live insertion support allows field-replacement of failed modules without halting full rack operation; 2000 V HBM ESD rating withstands probe contact discharge. |
Use Scenario: Retrofitting modern microcontrollers into legacy 5 V ISA or VMEbus systems requiring strict signal integrity and timing compliance. IC Role / Device Role / Timing Role: Bus transceiver buffer matching original 74LS241 timing and drive strength while adding 3-state control. Use Value: Pin-compatible replacement for 'ABT241 with identical function table and improved ICCZ (500 nA vs. typical 1 µA), reducing quiescent power in always-on subsystems. |
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 two 4-bit groups (separate OE per group); same VCC range, 3.1 ns tPLH, 64 mA IOL. | Grouped enable control better suits split-bus architectures (e.g., separate address/data enables); different pinout. | Select when independent control of two 4-bit lanes is required instead of one 8-bit lane with dual OE. |
| 74LVC244APW | 3.3 V only (1.65–3.6 V), lower drive (24 mA IOL), smaller TSSOP20 package (SOT363-1), 3.8 ns tPLH. | Not compatible with 5 V systems; intended for mixed-voltage domains with level translation. | Choose only for new 3.3 V designs where board space and power efficiency outweigh 5 V compatibility needs. |
Compared with SN74ABT244N and 74LVC244APW, the 74ABT541D,623 provides unified 8-bit control with dual OE flexibility, native 5 V operation, and superior 2.9 ns speed-making it optimal for legacy-compliant industrial bus interfaces where timing and voltage alignment are critical.
Availability
74ABT541D,623 is available at Aetrix Electronics and suitable for industrial PLC backplanes, microcontroller bus expansion, and test equipment signal routing requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for 74ABT541D,623 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 5 V bus interfacing in industrial control and instrumentation, combining BiCMOS speed with TTL-compatible input thresholds and robust latch-up immunity.
FAQ
What is the maximum recommended supply voltage for the 74ABT541D,623?
The absolute maximum DC supply voltage for the 74ABT541D,623 is +7.0 V, but the recommended operating range is strictly 4.5 V to 5.5 V. Operation above 5.5 V risks exceeding internal junction temperature limits and may degrade long-term reliability, even if functional at room temperature. The 74ABT541D,623 is not rated for sustained operation at 6 V or higher.
Does the 74ABT541D,623 support live insertion in backplane systems?
Yes, the 74ABT541D,623 explicitly supports live insertion and extraction per its product specification, enabled by its power-up 3-state behavior and robust ESD/latch-up protection. This allows safe hot-swap in modular industrial backplanes without disrupting adjacent modules, provided the host system implements proper power sequencing and current limiting. The 74ABT541D,623 is validated for this use case in PLC and test equipment designs.
How does the dual OE configuration (OE0 and OE1) function in the 74ABT541D,623?
In the 74ABT541D,623, both OE0 (pin 1) and OE1 (pin 19) must be low to enable all eight outputs (Y0–Y7); if either is high, all outputs enter high-impedance state. This is an AND-logic enable-not independent group control. The 74ABT541D,623 uses dual OE for redundancy and noise immunity, not functional partitioning; the function table confirms simultaneous Yn control based on OE0 ∧ OE1.
What is the input leakage current specification for the 74ABT541D,623 at 25°C?
The input leakage current (II) for the 74ABT541D,623 is ±0.01 µA typical and ±1.0 µA maximum at Tamb = +25°C, VCC = 5.5 V, and VI = GND or VCC. This ultra-low leakage minimizes loading on high-impedance source circuits such as CMOS oscillator outputs or precision analog switches, preserving signal fidelity. The 74ABT541D,623 maintains this spec across its full operating temperature range.
Is the 74ABT541D,623 pin-compatible with the older 74ABT541N DIP version?
No-the 74ABT541D,623 (SO20, SOT163-1) shares identical pin numbering and logic function with the 74ABT541N (DIP20, SOT146-1), but the packages are not mechanically interchangeable. While electrical pinout matches (e.g., pin 1 = OE0, pin 20 = VCC), the SO package has gull-wing leads and 0.75 mm lead pitch versus DIP's through-hole 2.54 mm spacing. PCB layout and assembly processes differ; no physical drop-in replacement is possible without redesign.
74ABT541D,623 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74ABT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-SO
74ABT541D,623 FAQ
1.How can I place an order for 74ABT541D,623 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT541D,623 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 74ABT541D,623 reliable?
The price and inventory of 74ABT541D,623 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT541D,623 is usually 5 days.
3.What payment methods are accepted for 74ABT541D,623?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABT541D,623 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ABT541D,623?
74ABT541D,623 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT541D,623 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 74ABT541D,623?
For technical support, including 74ABT541D,623 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT541D,623 requirements.
6.How does Aetrix verify that 74ABT541D,623 is sourced from the original manufacturer or authorized distributors?
All 74ABT541D,623 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 74ABT541D,623 meets industry standards.
7.What is the process for return or replacement of 74ABT541D,623?
All 74ABT541D,623 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT541D,623, 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 74ABT541D,623 part is unused and in its original packaging.
Return procedure for 74ABT541D,623:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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