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Texas Instruments SN74ABT241APW
- Part No.:
- SN74ABT241APW
- Manufacturer:
- Texas Instruments
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74ABT241APW.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:677
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Product details
Overview
SN74ABT241APW from Texas Instruments is an octal noninverting buffer/driver with 3-state outputs, designed for memory address and bus driving in 5-V systems. It delivers high-drive capability (–32 mA IOH, 64 mA IOL), operates from –40°C to 85°C, and features EPIC-II™B BiCMOS technology for low power dissipation and robust latch-up immunity (>500 mA per JESD-17).
For engineers reviewing the SN74ABT241APW datasheet, SN74ABT241APW pinout, SN74ABT241APW application, or SN74ABT241APW equivalent, this device is selected for high-density 3-state bus interface applications requiring fast propagation delay (tPLH/tPHL ≤ 4.6 ns at 5 V), low ground bounce (<1 V VOLP), and compatibility with TTL-level control signals.
Technical Context
This device integrates two independent 4-bit noninverting buffer sections, each with dedicated active-low 3-state output-enable (OE) inputs. Its EPIC-II™B BiCMOS architecture combines bipolar speed with CMOS low static power, enabling high-speed switching while maintaining low ICC in disabled state (≤250 µA).
Each output supports symmetrical drive strength and is specified for operation under 5-V supply with VIH = 2 V, VIL = 0.8 V, and guaranteed VOH ≥ 2 V at –32 mA and VOL ≤ 0.55 V at 64 mA - meeting standard TTL interface requirements without level translation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - ensures compatibility with regulated 5-V logic rails and tolerance to supply ripple. |
| IOH / IOL | –32 mA / 64 mA - drives heavy capacitive loads (e.g., >10 TTL inputs or long PCB traces) without signal degradation. |
| tPLH / tPHL | 1 ns (min) to 4.6 ns (max) at 5 V - enables reliable operation in high-speed address/data buses up to ~200 MHz toggle rate. |
| VIH / VIL | 2.0 V / 0.8 V - fully compatible with standard TTL input thresholds, eliminating need for external level-shifting. |
| IOZL / IOZH | ±10 µA - guarantees minimal leakage in 3-state high-impedance mode, preventing unintended loading of shared bus lines. |
| θJA (PW) | 128°C/W - defines thermal derating limit for continuous operation in still-air environments at full drive load. |
| ESD Rating | 2000 V HBM - exceeds MIL-STD-883 Method 3015, supporting robust handling in standard manufacturing environments. |
Pinout & Package
TSSOP-20 (PW) package: 6.95 mm × 4.4 mm × 1.2 mm body, 0.65 mm lead pitch, RoHS-compliant NiPdAu lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 19 | Active-low output enable (Section 1) | Controls Y1–Y4 outputs; tied high via pullup resistor ensures 3-state during power-up. |
| 2OE, 2 | Active-low output enable (Section 2) | Independent control of Y1–Y4 outputs; allows selective bus partitioning. |
| 1A1–1A4, 3,5,7,9 | Noninverting data inputs (Section 1) | Directly drive corresponding Y outputs when OE is asserted low. |
| 2A1–2A4, 18,16,14,12 | Noninverting data inputs (Section 2) | Match Section 1 pinout symmetry for layout-efficient dual-bus routing. |
| 1Y1–1Y4, 17,15,13,11 | Noninverting 3-state outputs (Section 1) | High-drive outputs with controlled VOLP; share common GND (Pin 10) return path. |
| 2Y1–2Y4, 4,6,8,20 | Noninverting 3-state outputs (Section 2) | Electrically isolated from Section 1; require separate bus termination if used concurrently. |
| VCC, 11 | Positive supply | Single 5-V rail powers both sections; decoupling capacitor required near Pin 11. |
| GND, 10 | Ground reference | Common return for all I/O and supply currents; critical for noise control in high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| EPIC-II™B BiCMOS process | Reduces dynamic power by >40% vs. legacy bipolar buffers while retaining TTL-compatible speed and drive. |
| High-impedance control during power sequencing | OE pins default to disable state when floating; pullup/pulldown resistors ensure safe startup/shutdown behavior. |
| Output ground bounce suppression | VOLP < 1 V at 5 V/25°C - minimizes simultaneous switching noise on shared VCC/GND planes. |
| Latch-up immunity | Exceeds 500 mA per JEDEC JESD-17 - prevents destructive latch-up under transient overvoltage or ESD events. |
| Bus-hold circuitry | Not integrated - unused inputs must be externally terminated to VCC or GND to avoid floating-induced oscillation. |
Applications
| Memory Address Buffering | PCI Bus Interface |
|---|---|
|
Use Scenario: Driving 20-bit address bus between microcontroller and SRAM/Flash in embedded control system. IC Role / Device Role / Timing Role: Noninverting buffer isolating CPU address outputs from memory input capacitance; enables fanout expansion without timing skew. Use Value: Propagation delay ≤4.6 ns ensures setup/hold margin for 25-MHz memory access cycles; 64-mA sink current handles 15-pF trace + device load. |
Use Scenario: Level-shifting and bus isolation between PCI controller and peripheral add-in card. IC Role / Device Role / Timing Role: 3-state driver enabling bidirectional data/address multiplexing on shared PCI slot lines. Use Value: Symmetrical OE control allows precise timing of bus release; ±32-mA drive meets PCI 2.2 DC loading requirements. |
| Industrial Backplane Driver | Digital I/O Expansion Module |
|
Use Scenario: Interfacing FPGA I/O banks to 24-V industrial backplane with long parallel traces. IC Role / Device Role / Timing Role: High-current buffer amplifying FPGA logic levels to drive unterminated 100-mm PCB traces. Use Value: 64-mA IOL sustains clean logic LOW under 30-pF distributed capacitance; TSSOP-20 footprint supports dense backplane connector routing. |
Use Scenario: Expanding GPIO count on ARM-based PLC module using parallel I/O expander interface. IC Role / Device Role / Timing Role: Octal buffer relaying status/control signals between host processor and remote I/O ASIC. Use Value: Dual OE inputs allow independent enable/disable of two 4-bit groups, simplifying software-controlled signal gating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT240APW | Inverting output logic (vs. noninverting in SN74ABT241APW); identical drive strength, timing, and package. | Required where signal polarity inversion is needed in bus direction control or feedback paths. | Select SN74ABT240APW only when inverting logic matches system-level signal flow; no PCB change needed. |
| SN74LVC244APW | Lower voltage operation (1.65–3.6 V), reduced drive (–24/24 mA), higher VOL/VOL at full load. | Suitable for mixed-voltage 3.3-V systems but cannot replace SN74ABT241APW in 5-V legacy designs. | Choose SN74LVC244APW for new 3.3-V designs prioritizing lower power; not drop-in compatible with 5-V SN74ABT241APW. |
Compared with SN74ABT241APW, SN74ABT240APW provides identical performance with inverted outputs for polarity-sensitive interfaces, while SN74LVC244APW offers voltage scalability at the cost of drive strength and 5-V compatibility - making SN74ABT241APW optimal for legacy 5-V bus buffering where signal integrity and TTL interoperability are critical.
Availability
SN74ABT241APW is available at Aetrix Electronics and suitable for memory address buffering, PCI bus interfacing, and industrial backplane driver applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74ABT241APW 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 SN74ABT241APW - was engineered for high-speed, high-drive 5-V bus applications in computing, communications, and industrial control systems where TTL compatibility and noise immunity are essential.
FAQ
What is the operating temperature range for SN74ABT241APW?
The SN74ABT241APW is characterized for operation from –40°C to +85°C, matching commercial and industrial ambient requirements. This range is validated per the SN74ABT241A specification and applies specifically to the PW-package variant. Operation outside this range may result in parametric shift or functional failure, and is not guaranteed by Texas Instruments.
Does SN74ABT241APW include bus-hold circuitry on its inputs?
No, SN74ABT241APW does not integrate bus-hold circuitry. Unused inputs must be externally terminated to VCC or GND to prevent floating, as stated in the recommended operating conditions. Leaving inputs unconnected risks oscillation, increased power consumption, and potential damage due to undefined logic states.
Can SN74ABT241APW be used with a 3.3-V supply?
No, SN74ABT241APW is not rated for 3.3-V operation. Its absolute maximum VCC is 7 V, but the recommended operating range is strictly 4.5 V to 5.5 V. At 3.3 V, outputs will not meet VOH/VOL specifications, and internal logic may fail to switch reliably. Use SN74LVC244APW instead for 3.3-V systems.
What is the thermal resistance θJA for SN74ABT241APW in the PW package?
The junction-to-ambient thermal resistance (θJA) for SN74ABT241APW in the TSSOP-20 (PW) package is 128°C/W, as specified in the absolute maximum ratings table. This value assumes standard JEDEC test board conditions (2-layer board, 1-in² copper area) and must be used for thermal derating calculations under worst-case power dissipation.
How should the OE pins be handled during power-up to ensure safe 3-state behavior?
To ensure high-impedance outputs during power-up or power-down, OE pins (1OE and 2OE) must be tied to VCC through a pullup resistor. The minimum resistor value depends on the current-sinking capability of the driving source; TI recommends ≥10 kΩ for typical microcontroller GPIOs. Pulldown resistors are not required unless active-low assertion is part of the control sequence.
SN74ABT241APW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm 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, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
SN74ABT241APW FAQ
1.How can I place an order for SN74ABT241APW through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT241APW 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 SN74ABT241APW reliable?
The price and inventory of SN74ABT241APW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT241APW is usually 5 days.
3.What payment methods are accepted for SN74ABT241APW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT241APW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ABT241APW?
SN74ABT241APW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT241APW 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 SN74ABT241APW?
For technical support, including SN74ABT241APW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT241APW requirements.
6.How does Aetrix verify that SN74ABT241APW is sourced from the original manufacturer or authorized distributors?
All SN74ABT241APW 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 SN74ABT241APW meets industry standards.
7.What is the process for return or replacement of SN74ABT241APW?
All SN74ABT241APW units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT241APW, 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 SN74ABT241APW part is unused and in its original packaging.
Return procedure for SN74ABT241APW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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