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Texas Instruments SN74ABT541BPWR
- Part No.:
- SN74ABT541BPWR
- Manufacturer:
- Texas Instruments
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74ABT541BPWR.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,742
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Product details
Overview
SN74ABT541BPWR from Texas Instruments is an octal buffer/driver with 3-state outputs, designed for bus line driving and memory address register buffering in 5-V digital 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.
For engineers reviewing the SN74ABT541BPWR datasheet, SN74ABT541BPWR pinout, SN74ABT541BPWR application, or SN74ABT541BPWR equivalent, key selection criteria include its TSSOP-20 package, EPIC-IIB™ BiCMOS process for low power dissipation, latch-up immunity (>500 mA), and precise timing performance (tPLH/tPHL ≤ 3.9 ns at VCC = 5 V).
Technical Context
The SN74ABT541BPWR implements a dual-gated 3-state control architecture: both OE1 and OE2 must be low to enable outputs; either high forces all eight Y outputs into high-impedance. Its BiCMOS design enables TTL-compatible input thresholds (VIL = 0.8 V, VIH = 2 V) while delivering rail-to-rail output swing under load.
During power-up/down (VCC between 0–2.1 V), the device auto-enters high-impedance state without external biasing. For reliable disable above 2.1 V, OE pins require pull-up resistors sized per driver sink capability - a critical layout consideration for hot-swap or partial-power-down systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with standard 5-V TTL/CMOS logic rails and noise margin stability. |
| Output Drive | –32 mA IOH / +64 mA IOL - supports heavy capacitive loads (e.g., >100 pF buses) and fan-out to multiple CMOS/TTL inputs. |
| Propagation Delay | tPLH/tPHL ≤ 3.9 ns (CL = 50 pF) - enables use in high-speed address/data paths up to ~100 MHz clock domains. |
| 3-State Enable Time | tPZH/tPHZ ≤ 5.8 ns - guarantees fast bus arbitration and minimal contention windows during multi-driver sharing. |
| Input Clamp Current | –18 mA (VI < 0) - protects against negative transients during board-level ESD or signal undershoot events. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control, instrumentation, and communications equipment. |
Pinout & Package
TSSOP-20 package (PW), 6.5 mm × 4.4 mm footprint, 0.65 mm lead pitch, 1.2 mm max height - optimized for high-density PCB layouts with exposed thermal pad (non-electrical).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | OE1, OE2 | Active-low 3-state enable inputs - AND logic: both must be low for output drive; either high disables all Y outputs. |
| 3–10 | Y1–Y8 | Noninverting buffered outputs - drive external bus lines or memory latches with high current sinking/source capability. |
| 11–18 | A1–A8 | Data inputs - TTL-compatible thresholds allow direct interfacing with legacy 5-V microcontrollers and FPGAs. |
| 19 | VCC | Positive supply - decoupling capacitor (0.1 µF ceramic) required within 5 mm for stable high-speed switching. |
| 20 | GND | Signal ground reference - shared return path for all I/O; requires low-inductance connection to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| EPIC-IIB™ BiCMOS Process | Reduces dynamic power by >40% vs. standard bipolar TTL while retaining full 5-V drive strength and speed. |
| Latch-Up Immunity | Exceeds 500 mA per JEDEC JESD-17 - eliminates risk of destructive latch-up during overvoltage or ESD stress events. |
| Power-Up/Down High-Z | Guaranteed high-impedance state when VCC ∈ [0, 2.1 V] - prevents bus contention during sequencing or brownout conditions. |
| Low Ground Bounce | VOLP < 1 V at VCC = 5 V - minimizes simultaneous switching noise on shared GND nets in dense digital systems. |
| Input/Output Isolation | Outputs placed opposite inputs on package - simplifies PCB routing with orthogonal trace paths and reduces crosstalk. |
Applications
| Memory Address Buffering | System Bus Driver |
|---|---|
Use Scenario: Buffering 8-bit address lines from a microcontroller to SRAM or flash memory in an industrial PLC. IC Role / Device Role / Timing Role: Noninverting octal buffer isolating MCU address outputs from memory address inputs while maintaining timing integrity. Use Value: Enables clean signal transmission across 10-cm PCB traces with 64-mA sink drive, eliminating address glitches during high-speed read/write cycles. | Use Scenario: Driving a shared 8-bit data bus among multiple peripherals (ADC, DAC, UART) in a test instrument. IC Role / Device Role / Timing Role: Bidirectional bus driver with fast 3-state control (tPZH ≤ 4.5 ns) enabling rapid peripheral arbitration. Use Value: Prevents bus contention via dual OE gating and delivers sub-4-ns propagation delay for synchronized multi-peripheral access. |
| Legacy Interface Translation | Hot-Swap I/O Expansion |
Use Scenario: Interfacing a modern FPGA's 3.3-V I/O bank to legacy 5-V parallel peripherals (e.g., dot-matrix display controller). IC Role / Device Role / Timing Role: Level-shifting buffer with 5-V tolerant inputs and 5-V compliant outputs, supporting mixed-voltage system integration. Use Value: Eliminates need for discrete level shifters; TTL input thresholds ensure reliable detection of 3.3-V logic highs without external biasing. | Use Scenario: Adding modular I/O cards to a backplane-based automation controller with live insertion capability. IC Role / Device Role / Timing Role: Hot-swap bus interface IC providing controlled power-up sequencing and automatic high-Z entry during card insertion. Use Value: Prevents backplane bus disruption during card insertion/removal via intrinsic 0–2.1 V high-Z behavior and robust latch-up immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT244BPWR | Octal buffer with separate A→Y and Y→A direction control; non-inverting only; identical PW package and electrical specs. | Requires explicit direction control signal; unsuitable for simple unidirectional buffering where OE-only control suffices. | Choose when bidirectional data flow or independent channel enable is needed; otherwise SN74ABT541BPWR offers simpler OE-only control. |
| SN74LVC8T245RHLR | 8-bit dual-supply translator (1.65–5.5 V); lower drive (–24/+24 mA); smaller VQFN-24 package; no inherent 5-V tolerance on A-side inputs. | Supports voltage translation (e.g., 3.3 V ↔ 5 V); not pin-compatible; requires level-shifted OE signals for 5-V operation. | Choose only for mixed-voltage systems requiring translation; SN74ABT541BPWR remains optimal for native 5-V bus isolation. |
Compared with SN74ABT244BPWR and SN74LVC8T245RHLR, the SN74ABT541BPWR provides the simplest OE-only 3-state control for unidirectional 5-V bus driving, with superior drive strength and guaranteed high-Z during power transitions - making it ideal for legacy-compatible industrial designs where layout simplicity and robustness are prioritized.
Availability
SN74ABT541BPWR is available at Aetrix Electronics and suitable for industrial control systems, test instrumentation, and legacy 5-V embedded computing platforms requiring stable component supply and long-term lifecycle support.
Supply support for SN74ABT541BPWR 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 industrial and automotive components.
The SN74ABT541BPWR belongs to TI's ABT logic family - engineered for high-speed, low-noise 5-V bus interfacing in mission-critical industrial and communications infrastructure equipment.
FAQ
What is the recommended decoupling for SN74ABT541BPWR?
Place a 0.1-µF ceramic capacitor between VCC (Pin 19) and GND (Pin 20), located within 5 mm of the SN74ABT541BPWR package. For systems with multiple SN74ABT541BPWR devices or high-frequency switching, add a 4.7-µF bulk capacitor per 5–10 devices on the same 5-V rail to suppress low-frequency ripple and maintain stable supply during peak current transients.
Does SN74ABT541BPWR support hot-swap operation?
Yes - the SN74ABT541BPWR enters a guaranteed high-impedance state when VCC is between 0 V and 2.1 V, preventing bus contention during live insertion. However, OE pins must be pulled high (e.g., via 10-kΩ resistor to VCC) to ensure disable above 2.1 V; relying solely on internal behavior is insufficient for full hot-swap compliance.
Can SN74ABT541BPWR drive a 100-pF bus capacitance reliably?
Yes - the SN74ABT541BPWR delivers 64-mA sink current and maintains tPHL ≤ 3.9 ns into 50-pF loads. At 100-pF, propagation delay increases to ~5.5 ns (per TI characterization), remaining within timing budgets for ≤40-MHz address/data buses. Use series termination (22–33 Ω) near drivers to dampen ringing.
What is the minimum pull-up resistor value for OE pins on SN74ABT541BPWR?
The minimum OE pull-up resistor is determined by the current-sinking capability of the driving source. If driven by a standard 5-V TTL output (IOL = 16 mA), a 330-Ω resistor ensures OE stays below 0.4 V when asserted. For microcontroller GPIOs (IOL = 20 mA), 220 Ω is safe. Always verify voltage drop under worst-case sink current per TI's SCBA004 application report.
Is SN74ABT541BPWR RoHS compliant and lead-free?
Yes - SN74ABT541BPWR is RoHS compliant with NiPdAu (NIPDAU) lead finish, rated MSL Level-1 (unlimited floor life at ≤30°C/60% RH), and qualified for reflow at 260°C peak. The "PWR" suffix explicitly denotes lead-free, tape-and-reel packaging per TI's ordering nomenclature.
SN74ABT541BPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-TSSOP
SN74ABT541BPWR FAQ
1.How can I place an order for SN74ABT541BPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT541BPWR 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 SN74ABT541BPWR reliable?
The price and inventory of SN74ABT541BPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT541BPWR is usually 5 days.
3.What payment methods are accepted for SN74ABT541BPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT541BPWR transactions.
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4.How is shipping managed for SN74ABT541BPWR?
SN74ABT541BPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT541BPWR 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 SN74ABT541BPWR?
For technical support, including SN74ABT541BPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT541BPWR requirements.
6.How does Aetrix verify that SN74ABT541BPWR is sourced from the original manufacturer or authorized distributors?
All SN74ABT541BPWR 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 SN74ABT541BPWR meets industry standards.
7.What is the process for return or replacement of SN74ABT541BPWR?
All SN74ABT541BPWR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT541BPWR, 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 SN74ABT541BPWR part is unused and in its original packaging.
Return procedure for SN74ABT541BPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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