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Texas Instruments SN74ABT541BDBRE4
- Part No.:
- SN74ABT541BDBRE4
- Manufacturer:
- Texas Instruments
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
SN74ABT541BDBRE4.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,299
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Product details
Overview
SN74ABT541BDBRE4 from Texas Instruments is an octal noninverting buffer/driver with 3-state outputs, designed for bus line driving and memory address register buffering. It operates from 4.5 V to 5.5 V, delivers ±32 mA high-drive capability (IOH/–32 mA, IOL/64 mA), features dual active-low output-enable inputs (OE1/OE2), and is housed in a 20-pin SSOP (DB) package rated for –40°C to 85°C.
For engineers reviewing the SN74ABT541BDBRE4 datasheet, SN74ABT541BDBRE4 pinout, SN74ABT541BDBRE4 application, or SN74ABT541BDBRE4 equivalent, key selection criteria include 3-state control logic, high-current drive strength, bus-compatible propagation delay (tPLH/tPHL ≤ 3.9 ns at 5 V), power-up high-impedance behavior, and SSOP-20 thermal performance (θJA = 115°C/W).
Technical Context
This device implements an EPIC-IIB™ BiCMOS architecture to reduce power dissipation while maintaining TTL-compatible input thresholds (VIH = 2 V, VIL = 0.8 V) and robust latch-up immunity (>500 mA per JESD-17). Its dual OE inputs form a two-input AND gate with active-low logic: either OE1 or OE2 high forces all eight Y outputs into high-impedance state.
During power-up/down, the device enters high-impedance mode when VCC is between 0 and 2.1 V. For guaranteed high-Z above 2.1 V, OE must be pulled up to VCC via an external resistor sized per driver sink capability - a critical layout consideration for hot-swap or sequencing-sensitive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5-V TTL and CMOS bus systems without level shifting. |
| Output Drive | –32 mA IOH / 64 mA IOL - sufficient to drive heavy capacitive loads (e.g., >100 pF) or multiple TTL inputs on shared buses. |
| Propagation Delay | tPLH/tPHL ≤ 3.9 ns @ VCC = 5 V, CL = 50 pF - enables reliable operation in high-speed address/data buffering up to ~100 MHz. |
| 3-State Enable Logic | Active-low dual OE (OE1 ∧ OE2) - allows flexible bus arbitration using separate enable signals or wired-OR control schemes. |
| Power-Up Behavior | High-impedance state when VCC ∈ [0, 2.1] V - prevents bus contention during supply ramp-up or brownout conditions. |
| Input Clamp Current | –18 mA (VI < 0 V) - protects against negative transients common in industrial backplane environments. |
| Thermal Resistance | θJA = 115°C/W (SSOP-20) - requires moderate PCB copper area for sustained 64-mA per-output operation at ambient ≤ 70°C. |
Pinout & Package
The SN74ABT541BDBRE4 is packaged in a 20-pin Shrink Small-Outline Package (SSOP-20, DB), measuring 7.5 mm × 5.6 mm × 1.75 mm max height, with 0.65 mm lead pitch and RoHS-compliant NiPdAu lead finish (Level-1 MSL rating).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | OE1, OE2 | Active-low output-enable inputs; both must be low for Y1–Y8 to follow A1–A8. Either high disables all outputs. |
| 3–10 | Y1–Y8 | Noninverting 3-state buffered outputs - high-drive, bus-capable, with controlled VOLP (<1 V) to minimize ground bounce. |
| 11, 12 | GND, VCC | Power terminals - decoupling capacitor (0.1 µF) required near Pin 12 to suppress switching noise on shared 5-V rails. |
| 13–20 | A1–A8 | True (noninverting) data inputs - TTL-compatible thresholds ensure interoperability with legacy microcontrollers and FPGAs. |
Key Features
| Feature | Design Value |
|---|---|
| EPIC-IIB™ BiCMOS process | Reduces static and dynamic power vs. standard bipolar TTL, enabling lower thermal load in dense PCB layouts. |
| High-impedance during power transition | Eliminates bus contention risks during system power-up, power-down, or reset sequences without external logic. |
| Output ground bounce (VOLP) | <1 V @ VCC = 5 V, TA = 25°C - ensures signal integrity on multi-drop buses with simultaneous switching outputs. |
| Latch-up immunity | >500 mA per JEDEC JESD-17 - withstands transient overcurrent events in industrial control and instrumentation applications. |
| Wide temperature range | –40°C to +85°C operation - validated for commercial and extended-temperature embedded systems including networking and automation. |
Applications
| Memory Address Buffering | Microcontroller Bus Interface |
|---|---|
Use Scenario: Isolating and driving 8-bit address lines from an MCU to external SRAM or flash memory. IC Role / Device Role / Timing Role: Noninverting buffer with 3-state control synchronized to memory read/write strobes. Use Value: Prevents address bus contention during memory access cycles and supports hot-plug memory modules via OE-controlled isolation. | Use Scenario: Interfacing an 8-bit microcontroller port to a peripheral bus with multiple slave devices. IC Role / Device Role / Timing Role: Bidirectional bus driver enabling shared data/address lines across multiple peripherals. Use Value: Enables clean bus arbitration using OE1/OE2 to isolate the MCU from peripherals during idle or interrupt service periods. |
| Industrial Backplane Driver | Digital I/O Expansion Module |
Use Scenario: Driving long-trace parallel control signals across a 100-mm PCB backplane in PLC I/O modules. IC Role / Device Role / Timing Role: High-current line driver compensating for trace capacitance and EMI-induced voltage drop. Use Value: Delivers 64 mA sink current to maintain valid logic levels at far-end receivers despite 50–100 pF net capacitance. | Use Scenario: Expanding GPIO count of an ARM Cortex-M0+ MCU by adding 8 configurable digital outputs. IC Role / Device Role / Timing Role: Output expander with hardware-gated enable, supporting synchronous update via OE control. Use Value: Allows deterministic output updates aligned to system clock edges, avoiding metastability in real-time control loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT244N | Same ABT family, but dual 4-bit configuration (two independent 4-bit buffers); different pinout and OE assignment (separate OE per 4-bit group). | Better suited for split-bus architectures requiring independent enable control of two 4-bit segments. | Select SN74ABT244N when partitioned enable control or footprint compatibility with legacy 244 designs is required. |
| SN74LVC244APWR | Lower-voltage (1.65–3.6 V), CMOS-based; 24-mA drive (IOL), higher input capacitance (4 pF), no VOLP spec. | Targeted for 3.3-V systems only; unsuitable for 5-V bus interfacing without level translation. | Choose SN74LVC244APWR only for new 3.3-V designs where power efficiency and smaller TSSOP-20 footprint outweigh 5-V compatibility needs. |
Compared with SN74ABT244N and SN74LVC244APWR, the SN74ABT541BDBRE4 provides superior 5-V bus drive strength, guaranteed high-Z during power transitions, and direct compatibility with legacy TTL systems - making it optimal for industrial 5-V backplanes and memory subsystems where robustness and voltage margin are critical.
Availability
SN74ABT541BDBRE4 is available at Aetrix Electronics and suitable for industrial automation, embedded memory subsystems, and microcontroller bus expansion requiring stable component supply and long-term production continuity.
Supply support for SN74ABT541BDBRE4 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 connectivity technologies with over 50 years of innovation in high-reliability logic and interface solutions.
The SN74ABT541BDBRE4 belongs to TI's ABT logic family, engineered for high-speed, high-drive 5-V bus interfacing in industrial, computing, and communications equipment where signal integrity and power-up safety are essential.
FAQ
What is the recommended pull-up resistor value for OE pins on the SN74ABT541BDBRE4?
The minimum pull-up resistor value for OE pins on the SN74ABT541BDBRE4 is determined by the current-sinking capability of the driving source. Per TI's datasheet, OE should be tied to VCC through a pullup resistor to guarantee high-impedance state above 2.1 V; typical values range from 4.7 kΩ to 10 kΩ when driven by standard CMOS outputs. The SN74ABT541BDBRE4 itself does not specify a maximum resistance, but excessive values risk slow enable timing or noise susceptibility.
Does the SN74ABT541BDBRE4 support hot-swap operation?
Yes, the SN74ABT541BDBRE4 supports hot-swap operation due to its inherent power-up/power-down high-impedance behavior when VCC is between 0 and 2.1 V. This prevents bus contention during insertion or removal. However, full hot-swap robustness also depends on system-level protection (e.g., series resistors, TVS diodes), and the SN74ABT541BDBRE4 must be powered before applying input signals to avoid violating absolute maximum ratings.
What is the maximum capacitive load the SN74ABT541BDBRE4 can drive reliably?
The SN74ABT541BDBRE4 is characterized with CL = 50 pF for switching specifications, but its 64-mA low-level output current (IOL) enables reliable driving of loads exceeding 100 pF in most board layouts. Real-world capability depends on trace length, termination, and acceptable rise/fall time degradation; for >100 pF, verify tPLH/tPHL margins and ground bounce (VOLP < 1 V) in the target application. The SN74ABT541BDBRE4 datasheet does not specify a hard CL maximum.
Can SN74ABT541BDBRE4 be used in place of SN74ABT541BDWR?
Yes, the SN74ABT541BDBRE4 and SN74ABT541BDWR are functionally identical octal buffers with the same ABT logic design, electrical specs, and operating temperature range (–40°C to 85°C). They differ only in package (SSOP-20 vs. SOIC-20) and reel quantity (2000 vs. 2000). Mechanical compatibility requires adjusting PCB footprint and stencil design; thermal performance differs (θJA = 115°C/W vs. 97°C/W), so power dissipation must be re-evaluated for the SN74ABT541BDBRE4 in high-current applications.
Is there an automotive-grade version of the SN74ABT541BDBRE4?
Yes - the automotive-qualified variant is SN74ABT541B-Q1, which meets AEC-Q100 Grade 2 (–40°C to +105°C) and includes enhanced reliability testing for zero-defect automotive applications. The SN74ABT541BDBRE4 itself is not automotive-qualified; it is rated for commercial/industrial use (–40°C to +85°C) and lacks the extended temperature validation, failure analysis reporting, and change notification requirements mandated for automotive deployment.
SN74ABT541BDBRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 20-SSOP (0.209", 5.30mm 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-SSOP
SN74ABT541BDBRE4 FAQ
1.How can I place an order for SN74ABT541BDBRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT541BDBRE4 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 SN74ABT541BDBRE4 reliable?
The price and inventory of SN74ABT541BDBRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT541BDBRE4 is usually 5 days.
3.What payment methods are accepted for SN74ABT541BDBRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT541BDBRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ABT541BDBRE4?
SN74ABT541BDBRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT541BDBRE4 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 SN74ABT541BDBRE4?
For technical support, including SN74ABT541BDBRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT541BDBRE4 requirements.
6.How does Aetrix verify that SN74ABT541BDBRE4 is sourced from the original manufacturer or authorized distributors?
All SN74ABT541BDBRE4 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 SN74ABT541BDBRE4 meets industry standards.
7.What is the process for return or replacement of SN74ABT541BDBRE4?
All SN74ABT541BDBRE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT541BDBRE4, 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 SN74ABT541BDBRE4 part is unused and in its original packaging.
Return procedure for SN74ABT541BDBRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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