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Texas Instruments SN74ABT2241DW
- Part No.:
- SN74ABT2241DW
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74ABT2241DW.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:698
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Product details
Overview
SN74ABT2241DW from Texas Instruments is an octal noninverting buffer/line driver with 3-state outputs, designed for memory address and bus driving applications. It features 25-Ω integrated series output resistors, ±12 mA low-level output drive, 24 mA high-level sink capability, and operates over –40°C to 85°C at 4.5–5.5 V supply. Used in high-density bus interface circuits where ground bounce suppression and fan-out enhancement are critical.
For engineers reviewing the SN74ABT2241DW datasheet, SN74ABT2241DW pinout, SN74ABT2241DW application, or SN74ABT2241DW equivalent, key selection considerations include its 20-pin SOIC (DW) package, dual independent 4-bit 3-state enable control (1OE/2OE), TTL-compatible input thresholds, and built-in overshoot/undershoot mitigation via on-die series termination.
Technical Context
This device implements two independent 4-bit noninverting buffer sections-each with dedicated active-low 3-state enable inputs (1OE and 2OE)-and uses EPIC-IIB BiCMOS technology to achieve low power dissipation while maintaining TTL-level drive strength. Its logic diagram confirms direct A→Y signal paths without inversion and explicit separation of output-enable domains.
The internal 25-Ω series resistor per output is integrated into the die structure-not external-and functions across all output states to dampen transmission-line reflections. Input hysteresis (100 mV) and controlled slew rate (5 ns/V) further support noise-immune operation in noisy digital systems.
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 system rails. |
| IOL / IOH | 12 mA / –24 mA - Supports driving multiple TTL loads or short PCB traces without external buffers. |
| tPLH / tPHL | 1 ns (min) to 4.7 ns (max) at 5 V - Enables reliable operation in high-speed address/data bus timing windows. |
| VOL / VOH | 0.8 V max / 2.0 V min at IOL = 12 mA / IOH = –24 mA - Guarantees valid TTL logic levels under full load. |
| θJA (SOIC-DW) | 97°C/W - Defines thermal derating limit for continuous operation in ambient temperatures up to 85°C. |
| Input Hysteresis | 100 mV - Reduces susceptibility to noise-induced false triggering on enable or data inputs. |
| Output Series R | 25 Ω (integrated) - Eliminates need for external series termination resistors on PCBs. |
Pinout & Package
SN74ABT2241DW is housed in a 20-pin SOIC (DW) package, 7.5 mm wide, 12.83 mm long, with 1.27 mm lead pitch and maximum height of 2.65 mm. RoHS-compliant, NIPDAU lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low 3-state enable inputs controlling first and second 4-bit buffer groups independently. |
| 2, 4, 6, 8 | 1A1–1A4 | Noninverting data inputs for first buffer group (pins map directly to outputs 18, 16, 14, 12). |
| 3, 5, 7, 9 | 2Y4–2Y1 | Inverted-order outputs for second buffer group (2Y4 = pin 3, 2Y1 = pin 9), driven by inputs 11, 13, 15, 17. |
| 11, 13, 15, 17 | 2A1–2A4 | Noninverting data inputs for second buffer group (driving outputs 9, 7, 5, 3 respectively). |
| 12, 14, 16, 18 | 1Y1–1Y4 | Noninverting outputs for first buffer group (1Y1 = pin 12, 1Y4 = pin 18), enabled by 1OE (pin 1). |
| 10, 20 | GND, VCC | Power reference and supply pins - decoupling capacitor placement near pin 20 is critical for noise control. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 25-Ω series output resistors | Eliminates external termination components and reduces PCB layout complexity for impedance-matched bus driving. |
| EPIC-IIB BiCMOS process | Combines bipolar speed and CMOS low static power - typical ICC < 30 mA at full drive, enabling dense memory subsystems. |
| Low ground bounce (VOLP < 1 V) | Ensures signal integrity during simultaneous output switching - critical for stable clock and address distribution. |
| Dual independent 3-state controls | Allows interleaved or partitioned bus access - e.g., one group drives address lines while the other handles data strobes. |
| TTL-compatible input thresholds | VIH = 2.0 V min / VIL = 0.8 V max - ensures interoperability with legacy 5-V logic families without level-shifting. |
Applications
| Memory Address Buffering | Bus Transceiver Interface |
|---|---|
|
Use Scenario: Driving 16-bit address bus from microcontroller to SRAM or Flash memory in embedded industrial controller. IC Role / Device Role / Timing Role: Noninverting octal buffer providing fan-out expansion and noise-resistant signal delivery to parallel memory chips. Use Value: Integrated 25-Ω series resistors suppress ringing on long traces, and dual OE inputs allow dynamic partitioning of address segments. |
Use Scenario: Isolating bidirectional data bus between FPGA and peripheral ASIC in test equipment backplane. IC Role / Device Role / Timing Role: Direction-controlled line driver enabling unidirectional data flow during read/write cycles via OE sequencing. Use Value: 12 mA sink capability supports TTL-loaded buses; low propagation delay (<4.7 ns) maintains timing margin in 20-MHz bus protocols. |
| Clock Distribution Network | Legacy System Bus Expansion |
|
Use Scenario: Distributing buffered clock signals to multiple synchronous peripherals in avionics data acquisition module. IC Role / Device Role / Timing Role: Low-skew, high-drive buffer replicating master clock with minimized ground bounce-induced jitter. Use Value: VOLP < 1 V at 5 V ensures clean edge transitions; symmetrical tPLH/tPHL minimizes duty-cycle distortion. |
Use Scenario: Adding ISA-bus-compatible I/O expansion to retro computing platform using modern microcontroller. IC Role / Device Role / Timing Role: Level-translating and fan-out enhancing interface between 3.3-V MCU GPIO and 5-V ISA data/address lines. Use Value: 4.5–5.5 V VCC range and TTL input compatibility enable direct connection; 20-pin SOIC fits legacy board footprints. |
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 |
|---|---|---|---|
| SN74ABT2240DW | Inverting outputs (A→Y̅) vs. SN74ABT2241DW's noninverting (A→Y); identical pinout, drive strength, and timing. | Required where logic polarity inversion is needed upstream - e.g., complementing address latch enables. | Select SN74ABT2240DW only when functional inversion is explicitly required; otherwise SN74ABT2241DW provides direct signal pass-through. |
| SN74LVC244APWR | 3.3-V only (1.65–3.6 V), lower drive (24 mA push/pull), no integrated series resistors, TSSOP-20 package. | Suitable for modern low-voltage systems but incompatible with 5-V buses without level shifters. | Choose SN74LVC244APWR for new 3.3-V designs prioritizing lower power; retain SN74ABT2241DW for 5-V legacy or mixed-voltage interconnects. |
Compared with SN74ABT2240DW, SN74ABT2241DW avoids unintended logic inversion in address/data paths; compared with SN74LVC244APWR, it delivers native 5-V compatibility, integrated termination, and proven ground-bounce resilience in high-fanout memory interfaces.
Availability
SN74ABT2241DW is available at Aetrix Electronics and suitable for memory subsystem design, industrial bus interfacing, and legacy system upgrades requiring stable component supply and long-term obsolescence management.
Supply support for SN74ABT2241DW 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.
The ABT logic family-including SN74ABT2241DW-is engineered for high-speed, low-noise 5-V bus interface applications, emphasizing drive strength, signal integrity, and compatibility with legacy TTL systems.
FAQ
What is the operating temperature range for SN74ABT2241DW?
The SN74ABT2241DW is characterized for operation from –40°C to +85°C. This commercial-grade temperature rating aligns with the SN74ABT2241 series (as opposed to the military-grade SN54ABT2241, rated –55°C to +125°C). Thermal performance is validated per JEDEC standards with θJA = 97°C/W in the SOIC-DW package.
Does SN74ABT2241DW require external pull-up or pull-down resistors on its OE inputs?
Yes - to ensure defined high-impedance state during power-up or power-down, OE inputs (pins 1 and 19) must be tied to VCC via a pull-up resistor or to GND via a pull-down resistor. Minimum resistor values depend on the current-sourcing/sinking capability of the driving source, as specified in the TI datasheet SCBS233B.
Can SN74ABT2241DW drive standard TTL loads directly?
Yes - SN74ABT2241DW delivers 12 mA sink and –24 mA source capability at VCC = 4.5–5.5 V, exceeding standard TTL unit load requirements (≤ 1.6 mA input current). Its VOH ≥ 2.0 V and VOL ≤ 0.8 V at full load guarantee valid logic levels across 10+ TTL inputs, making it suitable for direct fan-out expansion.
Is SN74ABT2241DW pin-compatible with other packages in the ABT2241 family?
Yes - SN74ABT2241DW shares identical pinout and function with SN74ABT2241DBR (SSOP-20) and SN74ABT2241PWR (TSSOP-20). All variants use the same top-view pin numbering and logic assignment, enabling drop-in replacement across SOIC, SSOP, and TSSOP footprints where board space and thermal constraints permit.
What is the purpose of the 25-Ω series resistor integrated into each output of SN74ABT2241DW?
The 25-Ω series resistor in SN74ABT2241DW is monolithically integrated to dampen signal reflections on PCB traces acting as transmission lines. It reduces overshoot and undershoot without requiring discrete components, improving signal integrity in high-speed bus and memory address routing - especially critical when driving unterminated or lightly loaded nets.
SN74ABT2241DW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 32mA, 12mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
SN74ABT2241DW FAQ
1.How can I place an order for SN74ABT2241DW through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT2241DW 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 SN74ABT2241DW reliable?
The price and inventory of SN74ABT2241DW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT2241DW is usually 5 days.
3.What payment methods are accepted for SN74ABT2241DW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT2241DW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ABT2241DW?
SN74ABT2241DW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT2241DW 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 SN74ABT2241DW?
For technical support, including SN74ABT2241DW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT2241DW requirements.
6.How does Aetrix verify that SN74ABT2241DW is sourced from the original manufacturer or authorized distributors?
All SN74ABT2241DW 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 SN74ABT2241DW meets industry standards.
7.What is the process for return or replacement of SN74ABT2241DW?
All SN74ABT2241DW units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT2241DW, 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 SN74ABT2241DW part is unused and in its original packaging.
Return procedure for SN74ABT2241DW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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