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Texas Instruments SN74ABT241APWR
- Part No.:
- SN74ABT241APWR
- Manufacturer:
- Texas Instruments
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74ABT241APWR.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:397
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Product details
Overview
SN74ABT241APWR from Texas Instruments is a noninverting octal buffer/driver with 3-state outputs, designed for memory address and bus-oriented applications. It operates at 4.5–5.5 V, delivers ±32 mA/±64 mA output drive, features 1.1–6.8 ns enable/disable timing, and is qualified for industrial temperature range (–40°C to 85°C) in TSSOP-20 package.
For engineers reviewing the SN74ABT241APWR datasheet, SN74ABT241APWR pinout, SN74ABT241APWR application, or SN74ABT241APWR equivalent, this page provides verified functional identity, validated pin mapping, confirmed switching and DC specifications, real-world bus-driving use cases, and two technically documented alternative parts for system-level design continuity.
Technical Context
The SN74ABT241APWR implements dual 4-bit noninverting buffers with independent 3-state control: 1OE enables Y1–Y4 (driven by A1–A4), and 2OE enables Y1–Y4 (driven by A1–A4). Each output supports high-drive capability (–32 mA IOH, 64 mA IOL) and exhibits low ground bounce (VOLP < 1 V at 5 V, 25°C).
Its EPIC-IIB BiCMOS architecture reduces power dissipation versus standard TTL while maintaining TTL-compatible input thresholds (VIH = 2 V, VIL = 0.8 V) and robust latch-up immunity (>500 mA per JESD-17). The device requires OE pull-up/pull-down resistors during power sequencing to ensure defined high-impedance state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - compatible with standard 5 V logic rails and tolerant of supply ripple. |
| IOH / IOL | –32 mA / 64 mA - drives heavy capacitive loads (e.g., >10 TTL inputs or long PCB traces) without signal degradation. |
| tPZH / tPZL | 1.1 ns / 1.3 ns typical - fast output disable ensures clean bus release in time-critical multiplexed systems. |
| VOL / VOH | 0.55 V @ 64 mA / 2.0 V @ –32 mA - guarantees solid logic-low and logic-high margins under full load. |
| Propagation Delay | 1.0–4.6 ns (tPLH/tPHL) - supports >200 MHz bus toggle rates in point-to-point configurations with CL = 50 pF. |
| Input Clamp Current | –18 mA - protects against negative transients on address/data lines during hot-insertion or ESD events. |
| ESD Rating | 2000 V HBM, 200 V MM - exceeds JEDEC JS-001 and MIL-STD-883 requirements for board-level robustness. |
Pinout & Package
TSSOP-20 (PW) package: 6.95 mm × 4.4 mm × 1.2 mm body, 0.65 mm lead pitch, exposed pad optional, RoHS-compliant NIPDAU finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE | Output-enable control for Y1–Y4 (Group 1) | Active-low; must be pulled high via resistor during power-up to prevent bus contention. |
| 1A1–1A4 | Noninverting data inputs for Group 1 outputs | Accept TTL/CMOS logic levels; VIH = 2 V min ensures compatibility with legacy 5 V systems. |
| 1Y1–1Y4 | Noninverting buffered outputs for Group 1 | 3-state capable; high-drive outputs sink 64 mA or source 32 mA into bus loads. |
| GND (Pin 10) | Power return reference | Shared ground plane required for stable VOLP performance and noise immunity. |
| VCC (Pin 20) | Positive supply rail | Must be decoupled locally (0.1 µF ceramic + 4.7 µF tantalum) near pin to suppress switching noise. |
| 2OE | Output-enable control for Y1–Y4 (Group 2) | Independent enable allows interleaved bus access or redundancy control across two 4-bit lanes. |
| 2A1–2A4 | Noninverting data inputs for Group 2 outputs | Duplicate input structure enables mirroring or split-bus architectures without external logic. |
| 2Y1–2Y4 | Noninverting buffered outputs for Group 2 | Electrically identical to Group 1 outputs; supports dual-bank memory or parallel I/O expansion. |
Key Features
| Feature | Design Value |
|---|---|
| High-Drive Outputs | –32 mA source / 64 mA sink capability eliminates need for external bus transceivers in medium-load applications. |
| Low Ground Bounce | VOLP < 1 V at 5 V ensures signal integrity during simultaneous output switching, critical for noise-sensitive analog co-location. |
| BiCMOS Process (EPIC-IIB) | Reduces static current (ICC < 250 µA when disabled) while retaining TTL speed-ideal for power-constrained industrial controllers. |
| Robust Latch-Up Immunity | Exceeds 500 mA per JESD-17-prevents destructive latch-up during voltage overshoot or undershoot on shared PCB power domains. |
| Wide Operating Temperature | –40°C to +85°C rating enables deployment in uncontrolled environments like factory automation cabinets or outdoor gateways. |
Applications
| Memory Address Buffering | Industrial Bus Transceiver |
|---|---|
|
Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM chips on a shared bus. IC Role / Device Role / Timing Role: Noninverting octal buffer providing level-shifting and fanout amplification with precise 3-state control during chip select transitions. Use Value: Eliminates address skew between banks and prevents bus contention during memory arbitration due to matched tPZH/tPZL (1.1/1.3 ns typ). |
Use Scenario: Isolating and driving CAN or RS-485 controller data lines in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Bidirectional bus driver enabling controlled data flow between MCU and physical layer transceivers with independent enable groups. Use Value: Dual OE inputs allow synchronized enable/disable of transmit/receive paths, reducing electromagnetic interference during protocol handshaking. |
| Legacy System Interface | Test Equipment Signal Conditioning |
|
Use Scenario: Interfacing modern FPGA I/O banks (3.3 V LVTTL) to legacy 5 V peripheral modules in avionics test rigs. IC Role / Device Role / Timing Role: Voltage-tolerant buffer translating logic levels while preserving timing integrity across mixed-voltage subsystems. Use Value: TTL-compatible inputs accept 3.3 V signals directly; high-drive outputs drive 5 V bus capacitance without external level shifters. |
Use Scenario: Conditioning digital stimulus signals in automated test equipment (ATE) before routing to DUT pins. IC Role / Device Role / Timing Role: Precision-controlled buffer ensuring minimal propagation delay variation (<0.5 ns max deviation) across all eight channels. Use Value: Tight tPLH/tPHL matching (1.0–4.6 ns) enables deterministic timing alignment for multi-channel parallel test vectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal noninverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT240APWR | Inverting outputs (Y = A̅); identical pinout, drive strength, and timing specs. | Required where logic inversion is needed in address/data path (e.g., complemented enable schemes). | Select when system logic demands inverted buffering; no PCB change needed-pin-to-pin compatible. |
| SN74LVC244APWR | Lower drive (–24 mA/24 mA), 1.65–3.6 V operation, CMOS input thresholds, higher propagation delay (3.5–6.5 ns). | Suitable for 3.3 V-only systems with lighter bus loads and relaxed timing budgets. | Choose for cost-sensitive, low-power 3.3 V designs; not drop-in-requires VCC and level-shifter review. |
Compared with SN74ABT241APWR, SN74ABT240APWR offers identical form-factor and electrical behavior except output polarity, enabling direct substitution where inversion is acceptable; SN74LVC244APWR trades drive strength and voltage range for lower static power and smaller die size, making it appropriate only in 3.3 V ecosystems with reduced loading demands.
Availability
SN74ABT241APWR is available at Aetrix Electronics and suitable for industrial control systems, legacy interface adapters, automated test equipment, and memory expansion modules requiring stable component supply across extended product lifecycles.
Supply support for SN74ABT241APWR 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 ABT logic family-including SN74ABT241APWR-is engineered for high-speed, high-drive 5 V bus interfacing in mission-critical industrial and instrumentation systems where reliability and noise immunity are paramount.
FAQ
What is the maximum output current rating for SN74ABT241APWR?
The SN74ABT241APWR supports –32 mA high-level output current (IOH) and 64 mA low-level output current (IOL) per channel under recommended operating conditions. These values are specified at VCC = 4.5 V and represent guaranteed minimum drive capability for reliable bus termination and fanout in industrial applications.
Does SN74ABT241APWR require external pull-up resistors on its OE pins?
Yes, SN74ABT241APWR requires external pull-up resistors on both 1OE and 2OE pins to ensure the outputs remain in high-impedance state during power-up and power-down sequences. The minimum resistor value depends on the current-sinking capability of the driving source, typically 1–10 kΩ for standard logic drivers.
Is SN74ABT241APWR pin-compatible with other packages in the ABT241 family?
SN74ABT241APWR (TSSOP-20) shares identical pinout and functionality with SN74ABT241ADBR (SSOP-20) and SN74ABT241ADWR (SOIC-20), but differs mechanically from ceramic or military-grade variants (e.g., SNJ54ABT241J). Electrical behavior and timing are consistent across all PW/DB/DW/N package versions of SN74ABT241A.
What is the thermal resistance (θJA) of SN74ABT241APWR in its TSSOP package?
The junction-to-ambient thermal resistance (θJA) for SN74ABT241APWR in the TSSOP (PW) package is 128°C/W, measured per JEDEC Std JESD51 with standard PCB layout (two-layer board, 1 in² copper). This value assumes no thermal pad connection; adding an exposed pad and thermal vias can reduce θJA by up to 30%.
Can SN74ABT241APWR operate reliably at 3.3 V supply voltage?
No, SN74ABT241APWR is not characterized for operation below 4.5 V. Its input thresholds (VIH = 2 V, VIL = 0.8 V) and output drive specifications are guaranteed only within the 4.5–5.5 V range. For 3.3 V systems, TI recommends SN74LVC244APWR or SN74ALVC244APWR as functionally similar alternatives.
SN74ABT241APWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
SN74ABT241APWR FAQ
1.How can I place an order for SN74ABT241APWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT241APWR 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 SN74ABT241APWR reliable?
The price and inventory of SN74ABT241APWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT241APWR is usually 5 days.
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SN74ABT241APWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT241APWR 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 SN74ABT241APWR?
For technical support, including SN74ABT241APWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT241APWR requirements.
6.How does Aetrix verify that SN74ABT241APWR is sourced from the original manufacturer or authorized distributors?
All SN74ABT241APWR 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 SN74ABT241APWR meets industry standards.
7.What is the process for return or replacement of SN74ABT241APWR?
All SN74ABT241APWR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT241APWR, 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 SN74ABT241APWR part is unused and in its original packaging.
Return procedure for SN74ABT241APWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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