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Texas Instruments SN74ABT541ADW
- Part No.:
- SN74ABT541ADW
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
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SN74ABT541ADW.pdf
- Description:
- BUFFER/LINE DRIVER 8-CH NON-INVE
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Inventory:1,525
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Product details
Overview
SN74ABT541ADW from Texas Instruments is an octal noninverting buffer/driver with 3-state outputs, designed for bus line driving and memory address register buffering in 5-V TTL-compatible systems. It delivers high-drive capability (–32 mA IOH, 64 mA IOL), features dual active-low output-enable inputs (OE1\, OE2\), and ensures power-up/power-down high-impedance safety below 2.1 V VCC.
For engineers reviewing the SN74ABT541ADW datasheet, SN74ABT541ADW pinout, SN74ABT541ADW application, or SN74ABT541ADW equivalent, key selection considerations include its SOIC-20 DW package, EPIC-II™B BiCMOS process enabling low power dissipation, latch-up immunity >500 mA per JESD-17, and guaranteed 3.9 ns max propagation delay at 5 V/25°C.
Technical Context
This device implements a dual-input AND gate logic for 3-state control: either OE1\ or OE2\ asserted high forces all eight Y outputs into high-impedance. Its BiCMOS architecture combines bipolar speed with CMOS input characteristics and low static current (≤1.5 mA typical ICC when enabled).
Input and output pins are arranged on opposite sides of the SOIC-20 package to simplify PCB routing. The device supports live insertion and exhibits <1 V typical output ground bounce (VOLP) at VCC = 5 V and TA = 25°C, critical for noise-sensitive bus environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - Ensures compatibility with standard 5-V TTL and mixed-voltage logic systems. |
| IOH / IOL | –32 mA / 64 mA - Enables direct drive of heavy capacitive loads or multiple TTL inputs without external buffers. |
| tPLH / tPHL | 1 ns min / 3.6 ns max - Guarantees sub-4 ns signal propagation for high-speed address/data bus timing. |
| tsk(o) | 0.5 ns max - Limits skew between any two outputs, preserving data integrity across parallel bus lines. |
| VIK | –1.2 V - Provides robust negative input voltage tolerance, supporting hot-swap and fault-tolerant interface designs. |
| IOZPU / IOZPD | ±50 µA - Confirms stable high-impedance state during power ramp-up/down, preventing bus contention. |
| θJA (DW) | 97 °C/W - Defines thermal performance for SOIC-20 layout; enables reliable operation up to 85°C ambient. |
Pinout & Package
SN74ABT541ADW is housed in a 20-pin plastic small-outline integrated circuit (SOIC) package (DW suffix), measuring 7.5 mm × 12.8 mm with 1.27 mm pitch. Pin 1 is marked by a beveled corner or dot; the package is RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE1\, OE2\ | Active-low 3-state enable inputs - Either high disables all outputs; both must be low for output assertion. |
| 2–9 | A1–A8 | Noninverting data inputs - Drive corresponding Y outputs when enables are active. |
| 11–18 | Y1–Y8 | Buffered noninverting outputs - High-drive, 3-state capable; placed opposite inputs for optimal PCB trace routing. |
| 10 | GND | Ground reference - Serves as return path for all input/output currents and internal biasing. |
| 20 | VCC | Positive supply - Powers internal BiCMOS circuitry; requires local 0.1 µF decoupling near pin. |
Key Features
| Feature | Design Value |
|---|---|
| EPIC-II™B BiCMOS process | Reduces dynamic power vs. pure bipolar while retaining TTL speed and drive strength. |
| Power-up/power-down 3-state | Guaranteed high-Z when VCC ∈ [0, 2.1 V], eliminating bus conflicts during supply sequencing. |
| Latch-up immunity | Exceeds 500 mA per JEDEC JESD-17 - Supports robust operation in noisy industrial environments. |
| Output ground bounce (VOLP) | <1 V typical at VCC = 5 V - Minimizes switching noise coupling into sensitive analog or clock domains. |
| Input clamp current (IIK) | –18 mA - Allows safe handling of transient overvoltage events without damage. |
Applications
| Memory Address Buffering | Parallel Bus Driver |
|---|---|
Use Scenario: Isolating and strengthening CPU address signals before routing to multiple memory ICs on a dense PCB. IC Role / Device Role / Timing Role: Noninverting octal buffer with 3-state control, enabling clean address latching and preventing back-driving during bus arbitration. Use Value: Eliminates signal degradation across long traces; high drive (64 mA IOL) ensures fast edge rates into 10+ TTL loads. |
Use Scenario: Driving shared data/address buses in industrial PLC backplanes where multiple masters contend for access. IC Role / Device Role / Timing Role: Bidirectional bus interface element controlled via OE1\ and OE2\ to coordinate read/write cycles and prevent contention. Use Value: Dual enable logic allows independent control of driver directionality; sub-4 ns propagation enables ≤25 MHz bus operation. |
| Hot-Swappable Module Interface | Legacy System Bus Extender |
Use Scenario: Enabling safe insertion/removal of peripheral cards in powered-backplane systems without disrupting main bus operation. IC Role / Device Role / Timing Role: Isolation buffer with guaranteed power-cycle high-Z behavior, preventing short-circuits during card mating. Use Value: Power-up 3-state eliminates need for complex sequencing circuits; ±50 µA IOZPU/PD ensures no leakage current during transitions. |
Use Scenario: Interfacing modern microcontrollers with legacy 5-V TTL peripherals requiring higher drive than standard logic can provide. IC Role / Device Role / Timing Role: Level-shifting and current-boosting buffer between MCU GPIO and legacy bus transceivers or display drivers. Use Value: –32 mA IOH supports driving long cables or multiple legacy devices; 0.5 ns output skew preserves data eye integrity. |
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 separate A→Y and Y→A directional controls; identical DW package and 5-V specs. | Supports bidirectional bus flow without external logic; SN74ABT541ADW requires external OE coordination for reverse paths. | Select SN74ABT244N when bidirectional data flow is required; SN74ABT541ADW is preferred for unidirectional address/data isolation. |
| SN74LVC541APWR | 3.3-V CMOS device (1.65–3.6 V VCC); lower drive (–24/24 mA), smaller TSSOP-20 package. | Designed for low-voltage portable systems; incompatible with 5-V TTL signaling without level translation. | Choose SN74LVC541APWR only in 3.3-V domains; SN74ABT541ADW remains optimal for legacy 5-V bus interfacing. |
Compared with SN74ABT244N and SN74LVC541APWR, SN74ABT541ADW uniquely balances military-grade latch-up immunity, 5-V TTL compatibility, and SOIC-20 footprint-making it the most direct replacement for aging 74F/74AS541 designs in industrial control and test equipment.
Availability
SN74ABT541ADW is available at Aetrix Electronics and suitable for industrial control systems, test instrumentation, and legacy computing hardware requiring stable component supply and long-term obsolescence management.
Supply support for SN74ABT541ADW 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with decades of heritage in high-reliability logic families.
SN74ABT541ADW belongs to the ABT advanced BiCMOS logic series, engineered for high-speed, high-drive 5-V bus interfacing in industrial, telecom, and computing infrastructure where signal integrity and latch-up immunity are critical.
FAQ
What is the operating temperature range for SN74ABT541ADW?
SN74ABT541ADW is characterized for operation from –40°C to +85°C, matching the commercial/industrial grade specification of the SN74ABT541B family. This range supports deployment in factory automation, networking equipment, and outdoor electronics enclosures without derating.
Does SN74ABT541ADW support live insertion?
Yes, SN74ABT541ADW supports live insertion due to its power-up 3-state feature: outputs remain in high-impedance whenever VCC is below 2.1 V, preventing bus contention during hot-plug events. This is confirmed by TI's application note SZZA033 on PU3S circuits.
What is the maximum capacitive load SN74ABT541ADW can drive reliably?
SN74ABT541ADW is specified with CL = 50 pF for all switching characteristics (e.g., tPLH ≤ 3.6 ns). While it can drive heavier loads, signal integrity degrades beyond this value; for >100 pF, use series termination or reduce trace length to maintain edge fidelity and avoid overshoot.
How should unused inputs be handled on SN74ABT541ADW?
All unused inputs on SN74ABT541ADW must be tied to VCC or GND to prevent floating states that cause excessive current draw and potential oscillation. TI application report SCBA004 explicitly mandates this for proper device operation and reliability.
Is SN74ABT541ADW pin-compatible with older 74F541 or 74AS541 devices?
Yes, SN74ABT541ADW uses the same SOIC-20 (DW) footprint and identical pinout as 74F541 and 74AS541, enabling drop-in replacement. However, its BiCMOS architecture reduces power consumption and improves noise immunity versus those bipolar predecessors.
SN74ABT541ADW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
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- Mounting Type:
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- Supplier Device Package:
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SN74ABT541ADW FAQ
1.How can I place an order for SN74ABT541ADW through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT541ADW 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 SN74ABT541ADW reliable?
The price and inventory of SN74ABT541ADW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT541ADW is usually 5 days.
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4.How is shipping managed for SN74ABT541ADW?
SN74ABT541ADW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT541ADW 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 SN74ABT541ADW?
For technical support, including SN74ABT541ADW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT541ADW requirements.
6.How does Aetrix verify that SN74ABT541ADW is sourced from the original manufacturer or authorized distributors?
All SN74ABT541ADW 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 SN74ABT541ADW meets industry standards.
7.What is the process for return or replacement of SN74ABT541ADW?
All SN74ABT541ADW units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT541ADW, 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 SN74ABT541ADW part is unused and in its original packaging.
Return procedure for SN74ABT541ADW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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