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Texas Instruments SN74ABT541BDWRE4
- Part No.:
- SN74ABT541BDWRE4
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74ABT541BDWRE4.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,907
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Product details
Overview
SN74ABT541BDWRE4 from Texas Instruments is an octal buffer/driver with 3-state outputs in a 20-pin SOIC (DW) package, operating from 4.5 V to 5.5 V, delivering ±32 mA high-drive capability and 3.2 ns typical propagation delay (tPLH) at VCC = 5 V, used for bus line driving and memory address register buffering in industrial control systems.
For engineers reviewing the SN74ABT541BDWRE4 datasheet, SN74ABT541BDWRE4 pinout, SN74ABT541BDWRE4 application, or SN74ABT541BDWRE4 equivalent, key selection criteria include dual active-low output-enable control (OE1/OE2), high-impedance state during power-up/down, latch-up immunity >500 mA, and compatibility with 5-V TTL/CMOS logic families.
Technical Context
The SN74ABT541BDWRE4 implements an EPIC-IIB™ BiCMOS architecture that reduces dynamic power dissipation while maintaining TTL-compatible input thresholds and CMOS-level output drive. Its dual 3-state enable inputs (OE1 and OE2) form a two-input AND gate with active-low logic: either high disables all eight outputs into high-impedance mode.
During power transitions, the device enters high-impedance state when VCC is between 0 V and 2.1 V; above 2.1 V, OE pins must be pulled up to VCC via external resistor to guarantee disable behavior. Input and output capacitances are specified at 3 pF and 6 pF respectively, supporting stable operation with 50-pF load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with standard 5-V digital systems and tolerance against rail droop. |
| Output Drive | –32 mA IOH / +64 mA IOL - enables direct interfacing with heavy capacitive loads or multiple TTL inputs without external buffers. |
| Propagation Delay | 3.2 ns (tPLH, typ) at CL = 50 pF - supports high-speed data transfer in address/data bus applications up to ~300 MHz effective toggle rate. |
| Enable Timing | tPZL = 4.0 ns (typ), tPHZ = 4.4 ns (typ) - guarantees fast output transition into and out of 3-state mode for time-critical bus arbitration. |
| Input Thresholds | VIL = 0.8 V, VIH = 2.0 V - matches standard TTL logic levels, allowing seamless integration with legacy 5-V microcontrollers and FPGAs. |
| Power-Up Behavior | High-impedance state when VCC < 2.1 V - prevents bus contention during system power sequencing and cold-start conditions. |
Pinout & Package
SN74ABT541BDWRE4 uses a 20-pin SOIC (DW) package measuring 7.5 mm × 12.8 mm × 2.65 mm (max height), with gull-wing leads, RoHS-compliant NiPdAu plating, and moisture sensitivity level (MSL) 1 (unlimited floor life at ≤30°C/60% RH).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | OE1, OE2 | Active-low 3-state enable inputs - both must be low for output drivers to be active; either high forces all Y outputs into high-Z. |
| 3–10 | Y1–Y8 | Noninverting buffered outputs - each corresponds one-to-one with A1–A8 and drives bidirectional bus lines or memory address latches. |
| 11, 12 | GND, VCC | Power supply terminals - decoupling capacitor (0.1 µF) required near Pin 12 to suppress switching noise and ground bounce (VOLP < 1 V). |
| 13–20 | A1–A8 | Buffer inputs - placed opposite Y pins to simplify PCB layout with orthogonal signal routing and minimize crosstalk on dense boards. |
Key Features
| Feature | Design Value |
|---|---|
| EPIC-IIB™ BiCMOS process | Reduces dynamic power consumption 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 in noisy industrial environments with ESD or supply transients. |
| Output ground bounce | VOLP < 1 V at VCC = 5 V, TA = 25°C - ensures signal integrity during simultaneous output switching and prevents false logic transitions. |
| Power-rail sequencing safety | Guaranteed high-Z state during VCC ramp from 0 V to 2.1 V - prevents back-driving or contention on shared buses during power-up/down. |
| High-drive 3-state outputs | –32 mA IOH / +64 mA IOL - supports fan-out to ≥10 standard TTL loads or direct connection to 50-Ω transmission lines with minimal termination. |
Applications
| Industrial PLC Backplane Interface | Memory Address Buffering |
|---|---|
Use Scenario: Interfacing microcontroller address/data buses to modular I/O expansion slots in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional octal buffer isolating CPU address lines from hot-swappable peripheral modules while enabling fast bus turnaround. Use Value: Dual OE control allows independent gating of upper/lower byte groups; 3.2 ns propagation delay maintains timing margin in 20-MHz bus cycles. | Use Scenario: Driving 16-bit address lines from an FPGA to parallel flash or SRAM in embedded instrumentation systems. IC Role / Device Role / Timing Role: Noninverting buffer amplifying weak FPGA output drive to meet memory setup/hold requirements under 50-pF trace loading. Use Value: 64-mA sink current ensures reliable low-level assertion across long PCB traces; high-Z disable prevents address corruption during memory reconfiguration. |
| Legacy System Bus Extender | Test Equipment Signal Conditioning |
Use Scenario: Extending ISA or VMEbus signal integrity over longer backplane runs in avionics test racks. IC Role / Device Role / Timing Role: Repeater buffer compensating for capacitive loss and skew across multi-drop bus segments. Use Value: Matched tPLH/tPHL (3.2/3.5 ns typ) minimizes inter-channel skew (<0.5 ns), preserving data eye opening at 25-MHz clock rates. | Use Scenario: Level-shifting and driving DUT interface signals in automated test equipment with mixed-voltage DUTs. IC Role / Device Role / Timing Role: Logic-level translator and driver stage between 3.3-V controller and 5-V DUT signaling standards. Use Value: TTL-compatible inputs accept 3.3-V logic highs directly; 5-V tolerant outputs drive legacy 5-V test fixtures without external level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT244DWRE4 | Octal noninverting buffer with identical SOIC-DW package, same VCC range and drive strength, but single OE pin instead of dual OE1/OE2. | Lacks independent upper/lower byte control; suitable only where unified enable suffices. | Select when simplified enable logic is acceptable and board layout favors pin-count reduction. |
| SN74LVC244APWR | 3.3-V-only operation (1.65–3.6 V), lower drive (±24 mA), smaller TSSOP-20 package, no 5-V tolerance on inputs. | Not compatible with 5-V systems; requires level translation if interfacing with legacy 5-V peripherals. | Choose for new 3.3-V designs prioritizing lower power and space savings over 5-V interoperability. |
Compared with SN74ABT244DWRE4 and SN74LVC244APWR, SN74ABT541BDWRE4 uniquely provides dual independent 3-state enables and guaranteed 5-V operation - critical for industrial backplanes and mixed-voltage upgrades where byte-granular bus control and legacy compatibility are mandatory.
Availability
SN74ABT541BDWRE4 is available at Aetrix Electronics and suitable for industrial PLC backplane interfaces, memory address buffering, legacy bus extension, and test equipment signal conditioning requiring stable component supply and long-term production continuity.
Supply support for SN74ABT541BDWRE4 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 over 90 years of innovation in industrial, automotive, and communications markets.
The SN74ABT541B product line delivers high-speed, high-drive 3-state logic for bus interface and memory subsystem applications, designed specifically to replace legacy TTL in demanding industrial and military-grade systems.
FAQ
What is the recommended power supply decoupling for SN74ABT541BDWRE4?
Place a 0.1-µF ceramic capacitor between Pin 12 (VCC) and Pin 11 (GND), located within 5 mm of the SN74ABT541BDWRE4 package. This minimizes supply noise and limits ground bounce (VOLP < 1 V) during simultaneous output switching. For systems with high di/dt, add a bulk 4.7-µF tantalum capacitor nearby. The SN74ABT541BDWRE4 datasheet specifies these values based on measured performance at 5 V and 25°C.
Does SN74ABT541BDWRE4 support hot-swap operation?
Yes - SN74ABT541BDWRE4 enters high-impedance state when VCC drops below 2.1 V, preventing back-driving or bus contention during live insertion. However, external pull-up resistors on OE1/OE2 (to VCC) are required to ensure disable behavior above 2.1 V. This behavior is verified per TI's SCBS093L datasheet and applies specifically to the SN74ABT541BDWRE4 SOIC-DW variant.
Can SN74ABT541BDWRE4 interface directly with 3.3-V microcontrollers?
Yes - SN74ABT541BDWRE4 accepts 3.3-V logic-high inputs (VIH = 2.0 V min) without level shifting, as confirmed by its TTL-compatible input thresholds. Its outputs swing rail-to-rail (0 V to 5 V), so interfacing with 3.3-V receivers requires series resistors or clamping diodes. This functionality is explicitly validated for the SN74ABT541BDWRE4 in TI's recommended operating conditions table.
What is the maximum capacitive load SN74ABT541BDWRE4 can drive reliably?
SN74ABT541BDWRE4 is characterized for CL = 50 pF, with guaranteed tPLH/tPHL ≤ 4.6 ns and VOL ≤ 0.55 V at IOL = 64 mA. Driving >50 pF increases propagation delay and ground bounce; for 100-pF loads, derate output current to ≤40 mA. These limits are measured and published for the SN74ABT541BDWRE4 in TI's switching characteristics tables.
Is SN74ABT541BDWRE4 pin-compatible with SN74ABT541BDWR?
Yes - SN74ABT541BDWRE4 and SN74ABT541BDWR share identical SOIC-DW package dimensions, 20-pin layout, thermal pad absence, and electrical specifications. The "E4" suffix denotes TI's green packaging standard (lead-free, RoHS-compliant NiPdAu finish), with no functional or mechanical differences affecting PCB design or replacement. This compatibility is documented in TI's PACKAGE OPTION ADDENDUM.
SN74ABT541BDWRE4 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
SN74ABT541BDWRE4 FAQ
1.How can I place an order for SN74ABT541BDWRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT541BDWRE4 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 SN74ABT541BDWRE4 reliable?
The price and inventory of SN74ABT541BDWRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT541BDWRE4 is usually 5 days.
3.What payment methods are accepted for SN74ABT541BDWRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT541BDWRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ABT541BDWRE4?
SN74ABT541BDWRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT541BDWRE4 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 SN74ABT541BDWRE4?
For technical support, including SN74ABT541BDWRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT541BDWRE4 requirements.
6.How does Aetrix verify that SN74ABT541BDWRE4 is sourced from the original manufacturer or authorized distributors?
All SN74ABT541BDWRE4 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 SN74ABT541BDWRE4 meets industry standards.
7.What is the process for return or replacement of SN74ABT541BDWRE4?
All SN74ABT541BDWRE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT541BDWRE4, 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 SN74ABT541BDWRE4 part is unused and in its original packaging.
Return procedure for SN74ABT541BDWRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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