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Texas Instruments SN74ABT241N
- Part No.:
- SN74ABT241N
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
SN74ABT241N.pdf
- Description:
- BUS DRIVER, ABT SERIES, 4-BIT
- Quantity:
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Inventory:1,590
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Product details
Overview
SN74ABT241N from Texas Instruments is an octal noninverting buffer/driver with 3-state outputs, designed for memory address and bus-oriented applications. It features high-drive capability (–32 mA IOH, 64 mA IOL), low output ground bounce (<1 V VOLP at 5 V), and operates over –40°C to 85°C. Its 20-pin PDIP package supports legacy board designs requiring robust TTL-compatible drive strength.
For engineers reviewing the SN74ABT241N datasheet, SN74ABT241N pinout, SN74ABT241N application, or SN74ABT241N equivalent, key selection considerations include 3-state bus isolation timing (tPZH/tPLZ ≤ 7 ns), BiCMOS power efficiency, latch-up immunity (>500 mA), and compatibility with 5-V TTL logic systems in industrial control and data acquisition interfaces.
Technical Context
This device integrates two independent 4-bit noninverting buffer sections, each controlled by active-low OE inputs (1OE and 2OE). Each section drives four outputs with symmetrical enable logic and high-impedance state control during power sequencing.
Its EPIC-IIB BiCMOS architecture enables fast switching (tPLH/tPHL ≤ 5.3 ns) while maintaining low static current (ICC ≤ 30 mA) and high noise immunity-critical for dense bus loading in backplane and motherboard applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - Ensures stable operation across standard 5-V supply tolerances. |
| IOH / IOL | –32 mA / 64 mA - Drives heavy capacitive loads and multiple TTL inputs without external buffers. |
| tPLH / tPHL | ≤ 5.3 ns - Supports high-speed address/data bus timing in microprocessor peripheral interfaces. |
| tPZH / tPLZ | ≤ 7 ns - Enables rapid bus release and acquisition for time-critical arbitration schemes. |
| VOL / VOH | 0.55 V / 2.0 V @ IOL=64 mA / IOH=–32 mA - Guarantees valid TTL logic levels under full load. |
| VIK | –1.2 V - Provides input clamp protection against negative transients on shared bus lines. |
| Operating Temp | –40°C to 85°C - Qualified for industrial-grade embedded systems and programmable logic controllers. |
Pinout & Package
SN74ABT241N uses a 20-pin plastic dual in-line package (PDIP-N), with 0.3-inch body width and through-hole mounting. Pin spacing is 0.1 inch, compatible with standard DIP sockets and wave-soldering processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 19 | Active-low output enable (Section 1) | Controls Y1–Y4 outputs; must be pulled high via resistor for safe power-up high-Z state. |
| 2OE, 2 | Active-low output enable (Section 2) | Controls Y1–Y4 of second section; independent control enables split-bus management. |
| 1A1–1A4, 2–5 | Data inputs (Section 1) | Noninverting inputs driving outputs 1Y1–1Y4 (pins 18,16,14,12). |
| 2A1–2A4, 11,13,15,17 | Data inputs (Section 2) | Noninverting inputs driving outputs 2Y1–2Y4 (pins 9,7,5,3). |
| GND, 10 | Ground reference | Primary return path for all output currents and internal bias networks. |
| VCC, 20 | Supply voltage | 5-V BiCMOS core and I/O supply; decoupling required within 1 cm for noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| High-Drive Outputs | –32 mA source / 64 mA sink per output enables direct connection to 10+ TTL loads without fanout buffers. |
| Low Ground Bounce | VOLP < 1 V at 5 V ensures signal integrity during simultaneous output switching in multi-driver buses. |
| Latch-Up Immunity | Exceeds 500 mA per JEDEC JESD-17 - prevents destructive failure during ESD or bus contention events. |
| 3-State Control Logic | Independent OE pins per section allow dynamic partitioning of 8-bit data paths without external gating. |
| EPIC-IIB BiCMOS | Reduces static power vs. bipolar-only equivalents while retaining speed and drive strength for legacy system upgrades. |
Applications
| Memory Address Buffering | Microprocessor Bus Interface |
|---|---|
Use Scenario: Driving 16-bit address lines from a microcontroller to SRAM or flash memory arrays in industrial PLCs. IC Role / Device Role / Timing Role: Noninverting 3-state buffer isolating CPU address bus from memory subsystem; enables shared bus access with DMA controllers. Use Value: High drive strength ensures setup/hold timing margins are maintained across 10-inch PCB traces and 50-pF loads. | Use Scenario: Interfacing an FPGA's general-purpose I/O bank to a legacy 5-V parallel data bus in test equipment. IC Role / Device Role / Timing Role: Level-shifting and bus-driving interface between 3.3-V FPGA outputs and 5-V peripherals. Use Value: Guaranteed VOH ≥ 2.0 V at –32 mA ensures reliable recognition by downstream 5-V TTL receivers. |
| Industrial Backplane Driver | Legacy System Bus Arbiter |
Use Scenario: Distributing clock or strobe signals across a 20-slot VMEbus backplane with daisy-chained modules. IC Role / Device Role / Timing Role: Low-skew, high-current driver for synchronous control signals requiring precise edge alignment. Use Value: Propagation delay matching (tPLH/tPHL ≤ 0.5 ns variation) minimizes skew-induced setup violations. | Use Scenario: Managing bidirectional data flow between two microcontrollers sharing a common 8-bit data bus in HVAC controller firmware. IC Role / Device Role / Timing Role: Direction-controlled 3-state buffer enabling half-duplex communication without external direction logic. Use Value: Independent OE pins allow software-selectable transmit/receive mode with sub-7-ns bus release latency. |
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 |
|---|---|---|---|
| SN74ABT240N | Inverting outputs (vs. noninverting in SN74ABT241N); identical drive, timing, and package. | Requires logic inversion in upstream signal path; unsuitable where polarity must be preserved. | Select when system-level logic already accommodates inverted buffering or when complementary signal pairs are needed. |
| SN74ACT241N | AC-family CMOS; lower ICC (10 µA typical), higher VOH (4.4 V), but reduced IOL (24 mA). | Lower power and higher noise margin, but insufficient drive for >5 TTL loads or long traces. | Prefer for low-power, noise-sensitive applications with light bus loading; avoid in high-fanout industrial backplanes. |
Compared with SN74ABT241N, SN74ABT240N provides identical drive and timing but inverts logic polarity-requiring schematic revision-while SN74ACT241N trades drive strength for lower static power and higher voltage margin, limiting use to lightly loaded 5-V CMOS/TTL interfaces.
Availability
SN74ABT241N is available at Aetrix Electronics and suitable for industrial control systems, legacy test equipment upgrades, and embedded data acquisition requiring stable component supply across extended product lifecycles.
Supply support for SN74ABT241N 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 technologies with over 50 years of innovation in industrial and automotive electronics.
The ABT logic family-including SN74ABT241N-was engineered for high-speed, high-drive 5-V TTL-compatible bus interfacing in mission-critical industrial and military systems requiring latch-up immunity and wide temperature operation.
FAQ
What is the maximum output current rating for SN74ABT241N?
The SN74ABT241N supports –32 mA high-level output current (IOH) and 64 mA low-level output current (IOL) per channel under recommended operating conditions. Absolute maximum ratings specify 128 mA sink capability for the SN74ABT241 variant, confirming robust drive headroom for transient bus loading in industrial environments where SN74ABT241N is deployed.
Does SN74ABT241N require external pull-up resistors on its OE pins?
Yes, SN74ABT241N requires external pull-up resistors on both 1OE and 2OE pins to ensure high-impedance outputs during power-up or power-down sequences. The minimum resistor value depends on the current-sinking capability of the driving source; TI recommends values between 1 kΩ and 10 kΩ for typical 5-V control logic, ensuring reliable assertion of the 3-state condition before internal bias stabilizes.
Is SN74ABT241N compatible with 3.3-V logic inputs?
No, SN74ABT241N is not guaranteed to reliably recognize 3.3-V logic-high inputs. Its VIH specification is 2.0 V minimum, but operation with 3.3-V inputs may cause marginal switching or increased propagation delay due to suboptimal noise margin. For mixed-voltage systems, level-shifting circuitry or a 3.3-V–compatible alternative like SN74LVC241 should be used instead of relying on SN74ABT241N.
What is the thermal performance of SN74ABT241N in its PDIP package?
SN74ABT241N in the N-package (PDIP) has a maximum power dissipation of 1.3 W at TA = 55°C in still air, based on junction-to-ambient thermal resistance modeling. This rating assumes zero board trace length per TI's thermal model; actual derating is required above 55°C ambient, with full derating to zero power at 125°C case temperature per absolute maximum limits.
Can SN74ABT241N replace SN74LS241 in existing designs?
SN74ABT241N can functionally replace SN74LS241 in most 5-V systems due to identical pinout, noninverting logic, and 3-state operation-but with critical improvements: 2× higher drive strength, 3× faster propagation (≤5.3 ns vs. ≤15 ns), and BiCMOS power efficiency. However, verify layout for increased edge rates and add local VCC decoupling, as SN74ABT241N's faster switching may exacerbate ground bounce if SN74LS241's original layout lacked adequate capacitance.
SN74ABT241N Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
SN74ABT241N FAQ
1.How can I place an order for SN74ABT241N through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT241N 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 SN74ABT241N reliable?
The price and inventory of SN74ABT241N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT241N is usually 5 days.
3.What payment methods are accepted for SN74ABT241N?
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SN74ABT241N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT241N 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 SN74ABT241N?
For technical support, including SN74ABT241N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT241N requirements.
6.How does Aetrix verify that SN74ABT241N is sourced from the original manufacturer or authorized distributors?
All SN74ABT241N 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 SN74ABT241N meets industry standards.
7.What is the process for return or replacement of SN74ABT241N?
All SN74ABT241N units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT241N, 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 SN74ABT241N part is unused and in its original packaging.
Return procedure for SN74ABT241N:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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