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Texas Instruments SN74ABT541BDWRG4
- Part No.:
- SN74ABT541BDWRG4
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74ABT541BDWRG4.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,097
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Product details
Overview
SN74ABT541BDWRG4 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 features dual active-low output-enable inputs (OE1, OE2), high-drive capability (–32 mA IOH / 64 mA IOL), and operates across –40°C to 85°C. Its SOIC-20 package supports high-density PCB layout with inputs and outputs on opposite sides.
For engineers reviewing the SN74ABT541BDWRG4 datasheet, SN74ABT541BDWRG4 pinout, SN74ABT541BDWRG4 application, or SN74ABT541BDWRG4 equivalent, key selection criteria include 3-state control logic, output drive strength, power-up high-impedance behavior, and compatibility with 5-V bus systems requiring low ground bounce (VOLP < 1 V) and fast propagation delays (tPLH/tPHL ≤ 3.9 ns).
Technical Context
The SN74ABT541BDWRG4 implements a dual-gated 3-state control architecture: both OE1 and OE2 must be low for outputs to follow inputs; either OE high forces all eight Y outputs into high-impedance. It uses EPIC-IIB™ BiCMOS technology to achieve low power dissipation while maintaining TTL-level input thresholds (VIH = 2 V, VIL = 0.8 V) and robust latch-up immunity (>500 mA per JESD-17).
During power-up/down (VCC between 0–2.1 V), the device auto-enters high-impedance state without external biasing. For reliable 3-state operation above 2.1 V, OE pins require pullup to VCC - minimum resistor value determined by driver sink capability. Input and output capacitances are specified at Ci = 3 pF and Co = 6 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 4.5 V to 5.5 V - ensures stable operation in standard 5-V TTL/CMOS mixed-signal buses. |
| IOH / IOL | –32 mA / 64 mA - drives heavy capacitive loads (e.g., backplane traces, multiple TTL inputs) without signal degradation. |
| tPLH / tPHL | ≤ 3.9 ns @ CL = 50 pF - enables high-speed data transfer in memory address latching and bus arbitration circuits. |
| VOLP (Ground Bounce) | < 1 V @ VCC = 5 V, TA = 25°C - minimizes noise coupling into adjacent signals during simultaneous switching. |
| VIH / VIL | 2.0 V / 0.8 V - guarantees interoperability with legacy 5-V TTL logic families and microcontroller GPIOs. |
| tsk(o) | 0.5 ns - tight output skew ensures synchronized enable/disable of all eight channels in timing-critical applications. |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded control, instrumentation, and communications equipment. |
Pinout & Package
SN74ABT541BDWRG4 is housed in a 20-pin SOIC (DW) package (7.5 mm × 12.8 mm, 1.27 mm pitch, max height 2.65 mm), RoHS-compliant with NiPdAu lead finish and MSL Level-1 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | OE1, OE2 | Active-low 3-state enable inputs - AND logic gate; either high disables all outputs. |
| 3–10 | Y1–Y8 | Noninverting buffered outputs - high-drive (64 mA sink), 3-state capable, placed on same side as VCC/GND for routing efficiency. |
| 11, 20 | GND, VCC | Power supply terminals - decoupling capacitor placement near Pin 20 (VCC) and Pin 11 (GND) critical for noise suppression. |
| 12–19 | A1–A8 | Buffer inputs - located opposite Y pins to simplify layer stacking and reduce crosstalk in dense PCB layouts. |
Key Features
| Feature | Design Value |
|---|---|
| EPIC-IIB™ BiCMOS process | Reduces dynamic power vs. pure bipolar while retaining TTL-compatible drive strength and speed. |
| Auto high-impedance at VCC < 2.1 V | Eliminates need for external power-on reset circuitry during supply ramp-up or brownout conditions. |
| High-impedance state during power up/down | Prevents bus contention and back-driving of upstream devices before system stabilization. |
| Latch-up immunity > 500 mA | Meets JEDEC JESD-17 - ensures reliability in noisy industrial environments with ESD or transient events. |
| Inputs/outputs on opposite package sides | Enables straight-through trace routing on single-layer or two-layer PCBs, reducing vias and stub length. |
Applications
| Memory Address Buffering | Bus Line Driving |
|---|---|
Use Scenario: Isolating and strengthening address lines between microcontroller and SRAM/Flash memory arrays. IC Role / Device Role / Timing Role: Noninverting buffer with 3-state control synchronizes with memory enable cycles to prevent bus conflicts during read/write transitions. Use Value: 64-mA sink current drives long traces and multiple memory chip address inputs; sub-4-ns propagation delay maintains timing margin in 20-MHz+ address strobes. |
Use Scenario: Driving shared data or control buses across multiple peripheral ICs on an industrial controller board. IC Role / Device Role / Timing Role: Octal 3-state driver enables time-multiplexed access to bus segments via OE1/OE2 gating logic. Use Value: Dual OE inputs allow independent control of two 4-bit groups; low VOLP prevents noise-induced glitches during concurrent switching of multiple peripherals. |
| Industrial I/O Expansion | TTL-Level Signal Translation |
Use Scenario: Interfacing FPGA GPIO banks to legacy 5-V TTL sensors, actuators, or display drivers. IC Role / Device Role / Timing Role: Level-shifting buffer with 3-state isolation protects FPGA I/O from overvoltage and bus contention during configuration or fault states. Use Value: VIH/VIL thresholds match TTL logic; high-impedance on power-down prevents backfeeding into unpowered FPGA banks. |
Use Scenario: Converting CMOS logic levels (e.g., from microcontroller) to robust 5-V TTL-compatible signals for legacy test equipment interfaces. IC Role / Device Role / Timing Role: Voltage-tolerant input stage accepts 3.3-V or 5-V logic; output stage delivers full TTL swing (0.55 V/2.5 V) into 50-pF loads. Use Value: 3-pF input capacitance minimizes loading on source drivers; 6-pF output capacitance ensures clean edge integrity into scope probes or cable loads. |
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 noninverting buffer with identical SOIC-20 package, but dual 4-bit groups each with independent OE; slightly higher ICC (250 µA vs. 250 µA typical). | Preferred when separate enable control per 4-bit channel is required (e.g., bidirectional data path segmentation). | Select SN74ABT244N if independent gating of two 4-bit lanes is needed; otherwise SN74ABT541BDWRG4 offers simpler dual-OE logic for unified 8-bit control. |
| 74ACT541SCX | ACT-family CMOS variant in SOIC-20; lower ICC (4 µA), but reduced drive (–24 mA/24 mA) and no VOLP spec; operates down to 4.5 V. | Better suited for low-power, noise-sensitive applications where drive strength is secondary to static current. | Choose 74ACT541SCX only when ultra-low quiescent current is prioritized over bus-driving capability and ground-bounce performance. |
Compared with SN74ABT244N and 74ACT541SCX, SN74ABT541BDWRG4 delivers superior sink current (64 mA), verified ground-bounce suppression (<1 V), and guaranteed high-impedance during power sequencing - making it optimal for industrial bus driving where reliability under load and transient conditions is critical.
Availability
SN74ABT541BDWRG4 is available at Aetrix Electronics and suitable for industrial control systems, memory interface designs, and legacy TTL bus expansion requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SN74ABT541BDWRG4 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 expertise in high-reliability interface and bus technologies.
SN74ABT541BDWRG4 belongs to TI's ABT logic family - engineered for high-speed, high-drive 5-V TTL-compatible applications in industrial, computing, and communications infrastructure where signal integrity and bus contention avoidance are essential.
FAQ
What is the recommended power supply decoupling for SN74ABT541BDWRG4?
Place a 0.1-µF ceramic capacitor between Pin 20 (VCC) and Pin 11 (GND), located within 5 mm of the package. For systems with multiple SN74ABT541BDWRG4 devices or high-frequency switching, add a 4.7-µF bulk capacitor per 5–10 ICs on the same VCC rail. This mitigates ground bounce (VOLP < 1 V) and ensures stable 3-state transitions during simultaneous output switching.
How does the dual OE input logic work on SN74ABT541BDWRG4?
The SN74ABT541BDWRG4 uses a two-input AND gate for 3-state control: both OE1 and OE2 must be low for Y1–Y8 to follow A1–A8. If either OE1 or OE2 is high, all outputs enter high-impedance regardless of input states. This allows flexible bus arbitration - e.g., OE1 controlled by master CPU, OE2 by DMA controller - preventing simultaneous drive conflicts.
Is SN74ABT541BDWRG4 compatible with 3.3-V microcontrollers?
Yes - SN74ABT541BDWRG4 accepts 3.3-V logic levels on its inputs: VIH = 2.0 V min and VIL = 0.8 V max ensure reliable recognition of 3.3-V high/low signals. However, its outputs swing to full 5-V TTL levels (VOH ≥ 2.5 V, VOL ≤ 0.55 V), so downstream 3.3-V receivers must tolerate 5-V inputs or use series resistors/clamp diodes.
Does SN74ABT541BDWRG4 require external pull-up resistors on OE pins?
Yes, for guaranteed 3-state operation above VCC = 2.1 V. TI specifies tying OE1 and OE2 to VCC via pullup resistors; minimum value depends on the driver's sink capability. A 10-kΩ resistor is typical for most microcontroller GPIOs. Without pullups, OE may float, causing unpredictable output states and potential bus contention.
What is the thermal resistance (θJA) of SN74ABT541BDWRG4 in its SOIC-20 package?
The SOIC-20 (DW) package of SN74ABT541BDWRG4 has a junction-to-ambient thermal resistance (θJA) of 97°C/W under standard JEDEC test conditions. This value assumes a 1-in² copper pad with two thermal vias. For sustained 64-mA output loading, derate power dissipation above 70°C ambient or add local copper pour to maintain junction temperature below 125°C.
SN74ABT541BDWRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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-SOIC
SN74ABT541BDWRG4 FAQ
1.How can I place an order for SN74ABT541BDWRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT541BDWRG4 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 SN74ABT541BDWRG4 reliable?
The price and inventory of SN74ABT541BDWRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT541BDWRG4 is usually 5 days.
3.What payment methods are accepted for SN74ABT541BDWRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT541BDWRG4 transactions.
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4.How is shipping managed for SN74ABT541BDWRG4?
SN74ABT541BDWRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT541BDWRG4 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 SN74ABT541BDWRG4?
For technical support, including SN74ABT541BDWRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT541BDWRG4 requirements.
6.How does Aetrix verify that SN74ABT541BDWRG4 is sourced from the original manufacturer or authorized distributors?
All SN74ABT541BDWRG4 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 SN74ABT541BDWRG4 meets industry standards.
7.What is the process for return or replacement of SN74ABT541BDWRG4?
All SN74ABT541BDWRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT541BDWRG4, 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 SN74ABT541BDWRG4 part is unused and in its original packaging.
Return procedure for SN74ABT541BDWRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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