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Texas Instruments SN74ABT241AN
- Part No.:
- SN74ABT241AN
- Manufacturer:
- Texas Instruments
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
SN74ABT241AN.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,239
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Product details
Overview
SN74ABT241AN from Texas Instruments is a noninverting octal buffer/driver with 3-state outputs, designed for memory address and bus-oriented applications. It operates from 4.5 V to 5.5 V, delivers ±32 mA high-drive outputs, supports –40°C to 85°C industrial temperature range, and uses PDIP-20 packaging for through-hole mounting in legacy or prototyping systems.
For engineers reviewing the SN74ABT241AN datasheet, SN74ABT241AN pinout, SN74ABT241AN application, or SN74ABT241AN equivalent, this page provides verified electrical specs, validated 20-pin DIP pin functions, real-world bus-driving use cases, and two confirmed alternative parts with documented functional and thermal differences.
Technical Context
This device implements dual 4-bit noninverting buffers with independent active-low 3-state enable controls (1OE and 2OE), enabling selective isolation of two 4-bit data paths. Each output drives up to –32 mA (IOH) and 64 mA (IOL) while maintaining TTL-compatible input thresholds (VIH = 2 V, VIL = 0.8 V) and low ground bounce (VOLP < 1 V).
Its EPIC-IIB BiCMOS process reduces power dissipation versus standard bipolar TTL, achieves latch-up immunity exceeding 500 mA per JESD-17, and provides ESD protection >2000 V (MIL-STD-883, Method 3015) and >200 V (machine model, C = 200 pF, R = 0).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5-V logic rails and tolerant of nominal supply variation. |
| Output Drive | –32 mA IOH / 64 mA IOL - sufficient to drive heavy capacitive loads or multiple TTL inputs without external buffering. |
| Propagation Delay | 1 ns to 4.6 ns (tPLH/tPHL at VCC = 5 V, CL = 50 pF) - enables reliable operation in high-speed address/data bus timing budgets. |
| 3-State Enable Time | tPZH/tPLZ ≤ 6.8 ns - ensures fast, glitch-free bus arbitration during output enable/disable transitions. |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including factory automation and embedded control systems. |
| Input Clamp Current | –18 mA - protects inputs against negative transients without external diodes in noisy environments. |
| Thermal Resistance | 67°C/W (θJA, N package) - defines maximum power dissipation limit under natural convection cooling in PCB layouts. |
Pinout & Package
SN74ABT241AN uses a 20-pin plastic dual in-line package (PDIP-N) with 0.3-inch body width and 0.1-inch lead pitch, optimized for through-hole assembly and manual prototyping. Pin 1 is located at the left end of the top row, identified by a notch or dot marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE | Active-low enable for Y1–Y4 outputs | Drives all four Channel 1 outputs into high-impedance state when high; requires pull-up resistor for power-up safety. |
| 1A1–1A4 | Noninverting inputs for Channel 1 | Accept TTL/CMOS-level signals; each directly drives corresponding Y1–Y4 output when 1OE is low. |
| 2OE | Active-low enable for Y1–Y4 outputs | Independent control for Channel 2; allows simultaneous or staggered bus isolation from two data sources. |
| 2A1–2A4 | Noninverting inputs for Channel 2 | Electrically isolated from Channel 1; supports dual-bus architectures like address/data multiplexing. |
| 1Y1–1Y4, 2Y1–2Y4 | Noninverting 3-state outputs | Each provides high-drive capability and bidirectional bus compatibility when enabled; float to high-Z when OE is high. |
| VCC, GND | Power and reference terminals | Single 5-V supply; decoupling capacitor required near VCC pin to suppress switching noise and ground bounce. |
Key Features
| Feature | Design Value |
|---|---|
| High-Drive Outputs | –32 mA IOH / 64 mA IOL enables direct driving of 10+ TTL loads or long PCB traces without signal degradation. |
| Low Ground Bounce | VOLP < 1 V at VCC = 5 V ensures stable logic levels during simultaneous output switching in dense bus systems. |
| Robust ESD Protection | >2000 V HBM and >200 V machine model rating reduces field failure risk in handling and system integration. |
| Latch-Up Immunity | Exceeds 500 mA per JESD-17 - prevents destructive parasitic SCR activation during voltage transients or hot-plug events. |
| BiCMOS Process | EPIC-IIB architecture cuts static power vs. bipolar TTL while retaining speed and drive strength for legacy interface upgrades. |
Applications
| Memory Address Buffering | Microprocessor Bus Interface |
|---|---|
Use Scenario: Driving 16-bit address lines from a microcontroller to SRAM or EPROM chips in an industrial controller. IC Role / Device Role / Timing Role: Noninverting buffer isolating CPU address outputs from memory load capacitance while supporting fast access cycles. Use Value: Propagation delay ≤4.6 ns and 64-mA drive ensure setup/hold timing margins are met across full temperature range. | Use Scenario: Interfacing an FPGA's general-purpose I/O bank to a legacy 8-bit parallel peripheral (e.g., LCD controller or ADC interface). IC Role / Device Role / Timing Role: Bidirectional bus driver enabling FPGA to source or sink data on shared lines using 3-state control. Use Value: Independent 1OE/2OE pins allow precise timing of data direction changes without bus contention. |
| Industrial Backplane Driver | Test Equipment Signal Conditioning |
Use Scenario: Level-shifting and amplifying digital control signals across a 100-mm backplane in modular PLC I/O modules. IC Role / Device Role / Timing Role: High-current buffer compensating for trace resistance and capacitance-induced rise/fall time degradation. Use Value: 64-mA IOL sustains clean 0.55-V VOL even under 50-pF load, preserving noise margin over long interconnects. | Use Scenario: Isolating and conditioning TTL-level trigger signals between automated test equipment (ATE) and DUTs with mixed-voltage interfaces. IC Role / Device Role / Timing Role: 3-state output enables safe connection/disconnection of stimulus signals without short-circuit risk. Use Value: Input clamp current (–18 mA) and ESD rating (>2000 V) protect ATE front-end circuitry from DUT-induced transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal noninverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT240AN | Inverting outputs (vs. noninverting); identical drive strength, timing, and package. | Requires logic inversion in upstream signal path; unsuitable where polarity must be preserved. | Select only if system design accommodates inverted data flow or uses complementary enable logic. |
| SN74LVC244APWR | 3.3-V only operation (1.65–3.6 V), lower drive (±24 mA), smaller TSSOP-20 package. | Not pin-compatible; requires PCB redesign and level translation for 5-V systems. | Prefer for new 3.3-V designs prioritizing space and power efficiency over legacy 5-V compatibility. |
Compared with SN74ABT241AN, SN74ABT240AN preserves pinout and drive but inverts logic, while SN74LVC244APWR offers modern low-voltage operation at the cost of voltage incompatibility and layout change.
Availability
SN74ABT241AN is available at Aetrix Electronics and suitable for industrial control systems, legacy test equipment, and microprocessor-based embedded designs requiring stable component supply and long-term obsolescence management.
Supply support for SN74ABT241AN 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 50 years of innovation in industrial and automotive electronics.
The ABT logic family, including SN74ABT241AN, was engineered for high-speed, high-drive 5-V bus interfacing in memory subsystems and microprocessor peripherals where reliability and noise immunity are critical.
FAQ
What is the recommended power supply decoupling for SN74ABT241AN?
Place a 0.1-µF ceramic capacitor between VCC and GND as close as possible to the SN74ABT241AN's pins. For systems with multiple devices or high-frequency switching, add a 4.7-µF tantalum capacitor nearby. This minimizes ground bounce (VOLP < 1 V) and maintains stable 5-V rail integrity during output transitions, directly supporting SN74ABT241AN's high-drive capability and timing performance.
Can SN74ABT241AN operate at 3.3 V?
No. SN74ABT241AN is specified only for 4.5 V to 5.5 V operation. At 3.3 V, VIH (2 V minimum) and VOH (≥2 V at –32 mA) cannot be guaranteed, and internal BiCMOS circuitry may not function correctly. Use SN74LVC244A or similar 3.3-V logic for that voltage domain. SN74ABT241AN requires strict adherence to its 5-V supply range to ensure correct behavior.
How should unused inputs be handled on SN74ABT241AN?
Unused inputs on SN74ABT241AN must be tied to a valid logic level - either VCC (for HIGH) or GND (for LOW) - to prevent floating states that cause excessive ICC current, increased noise susceptibility, and potential oscillation. Do not leave inputs unconnected. This requirement applies to all A and OE inputs, and is explicitly stated in the SN74ABT241AN datasheet under "Recommended Operating Conditions."
Is SN74ABT241AN RoHS compliant?
Yes. SN74ABT241AN is RoHS compliant, with lead finish specified as NiPdAu (NIPDAU) and no lead exemptions required. The part marking "SN74ABT241AN" appears on the package surface, and its RoHS status is confirmed in TI's official Packaging Information document dated 15-Jul-2026. This compliance applies to all currently shipped units of SN74ABT241AN.
What is the maximum capacitive load SN74ABT241AN can drive reliably?
SN74ABT241AN is characterized for CL = 50 pF in switching specifications, with propagation delays (tPLH/tPHL ≤ 4.6 ns) and output transition times validated at that load. While it can drive higher capacitance due to its 64-mA IOL, timing margins degrade linearly beyond 50 pF. For loads >75 pF, verify setup/hold timing in-system. The 50-pF figure is the maximum load used to guarantee SN74ABT241AN's published AC performance.
SN74ABT241AN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- 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, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 20-PDIP
SN74ABT241AN FAQ
1.How can I place an order for SN74ABT241AN through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT241AN 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 SN74ABT241AN reliable?
The price and inventory of SN74ABT241AN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT241AN is usually 5 days.
3.What payment methods are accepted for SN74ABT241AN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT241AN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ABT241AN?
SN74ABT241AN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT241AN 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 SN74ABT241AN?
For technical support, including SN74ABT241AN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT241AN requirements.
6.How does Aetrix verify that SN74ABT241AN is sourced from the original manufacturer or authorized distributors?
All SN74ABT241AN 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 SN74ABT241AN meets industry standards.
7.What is the process for return or replacement of SN74ABT241AN?
All SN74ABT241AN units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT241AN, 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 SN74ABT241AN part is unused and in its original packaging.
Return procedure for SN74ABT241AN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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