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Texas Instruments SN74AC241DBR
- Part No.:
- SN74AC241DBR
- Manufacturer:
- Texas Instruments
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
SN74AC241DBR.pdf
- Description:
- IC BUFF NON-INVERT 6V 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
SN74AC241DBR from Texas Instruments is an octal 3-state buffer/driver IC designed for memory address, clock, and bus interface applications. It operates from 2V to 6V VCC, accepts input voltages up to 6V, delivers ≤7.5ns propagation delay at 5V, and supports –40°C to +85°C industrial temperature range.
For engineers reviewing the SN74AC241DBR datasheet, SN74AC241DBR pinout, SN74AC241DBR application, or SN74AC241DBR equivalent, this device serves as a high-speed, voltage-flexible bus driver with dual independent 4-bit channels and complementary output-enable control - critical for bidirectional data routing in legacy and mixed-voltage systems.
Technical Context
The SN74AC241DBR implements two independent 4-bit noninverting buffer sections (1A→1Y and 2A→2Y), each controlled by complementary enable inputs (1OE low enables Channel 1; 2OE high enables Channel 2). Its AC logic family ensures TTL-compatible thresholds and CMOS-level power efficiency.
It features rail-to-rail input tolerance (VI up to VCC + 0.5V), ±24mA output drive at 4.5V/5.5V, and high-impedance outputs when disabled - enabling safe bus sharing without contention. The device is not a transceiver; it provides unidirectional buffering only.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2V to 6V - supports mixed-voltage system interfacing (e.g., 3.3V logic driving 5V bus) |
| Max tPD | 7.5ns at 5V - enables timing-critical address/data buffering in fast microprocessor buses |
| IOH/IOL | ±24mA at 4.5V - drives standard TTL loads or multiple CMOS inputs without external buffers |
| Input Voltage Tolerance | Up to 6V - allows direct connection to higher-voltage signals without level shifters |
| Operating Temperature | –40°C to +85°C - qualified for industrial embedded control and instrumentation environments |
| Output Enable Logic | Complementary: 1OE active-low, 2OE active-high - supports flexible bus arbitration schemes |
| Power Dissipation Cap. | 45pF per buffer - predicts dynamic power consumption under 1MHz switching with 50pF load |
Pinout & Package
SN74AC241DBR uses a 20-pin SSOP (Shrink Small Outline Package) with 0.65mm pitch, 7.2mm × 7.8mm body size, and 2mm max height - optimized for high-density PCB layouts while maintaining hand-solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE | Active-low enable for Channel 1 (1A1–1A4 → 1Y1–1Y4) | Drives all four Channel 1 outputs to high-Z when high; ties to VCC via pullup for power-up safety |
| 2OE | Active-high enable for Channel 2 (2A1–2A4 → 2Y1–2Y4) | Drives all four Channel 2 outputs to high-Z when low; ties to GND via pulldown for power-up safety |
| 1A1–1A4, 2A1–2A4 | Noninverting data inputs | Accept 2V–6V logic levels; no external level translation needed for mixed-supply interfaces |
| 1Y1–1Y4, 2Y1–2Y4 | 3-state noninverting outputs | Drive bus lines directly; high-Z state prevents contention during multiplexed access |
| VCC (Pin 20) | Positive supply | Must be bypassed with 0.1µF ceramic capacitor placed adjacent to pin for noise suppression |
| GND (Pin 10) | Ground reference | Common return for all I/O and supply currents; requires low-impedance PCB plane connection |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input voltage support | Inputs tolerate up to 6V regardless of VCC - eliminates need for external clamping or level-shifting circuitry |
| Dual independent 4-bit channels | Separate 1OE/2OE controls allow asymmetric bus management - e.g., one channel active while other is tri-stated |
| Low propagation delay | 7.5ns max at 5V enables use in 100+ MHz address strobe paths without timing margin erosion |
| High-output current drive | ±24mA per output sustains signal integrity across 50Ω transmission lines or fan-out to ≥10 LSTTL loads |
| Industrial temperature rating | –40°C to +85°C operation validated per JEDEC JESD22-A108 - suitable for factory automation and motor control |
Applications
| Memory Address Buffering | Clock Distribution |
|---|---|
Use Scenario: Driving address lines from a microcontroller to multiple SRAM or EPROM chips on a shared bus. IC Role / Device Role / Timing Role: Noninverting 3-state buffer isolating CPU address outputs and enabling chip-select-based memory banking. Use Value: Prevents bus contention during memory page switching; 7.5ns tPD maintains setup/hold timing margins at 20MHz bus speeds. | Use Scenario: Distributing a system clock signal to multiple peripheral controllers with matched trace lengths. IC Role / Device Role / Timing Role: Fan-out buffer replicating and driving a single clock source to synchronous logic blocks. Use Value: ±24mA drive strength ensures clean edge integrity across 10cm PCB traces; rail-to-rail inputs accept oscillator outputs up to 6V. |
| Legacy Bus Interface | Industrial I/O Expansion |
Use Scenario: Interfacing modern 3.3V FPGA I/O banks to legacy 5V ISA or VMEbus peripherals. IC Role / Device Role / Timing Role: Voltage-tolerant bus transceiver buffer (unidirectional) translating logic levels without external components. Use Value: Input tolerance to 6V and 2V–6V VCC range eliminate level shifters; SSOP package fits space-constrained backplane slots. | Use Scenario: Expanding digital I/O count in PLC modules where field-side signals require isolation and buffering. IC Role / Device Role / Timing Role: Isolated output driver stage controlled by microcontroller GPIO, feeding optocoupler inputs or relay drivers. Use Value: High-current outputs (±24mA) directly drive LED indicators or small solenoids; industrial temp rating matches enclosure thermal profiles. |
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 |
|---|---|---|---|
| SN74LVC241APWR | Lower VCC range (1.65V–3.6V); 3.3V-only optimized; 3.7ns tPD at 3.3V | Not suitable for 5V bus interfaces; requires level shifting if interfacing to 5V devices | Select when full system operates at 3.3V and speed >7ns is required |
| SN74HCT241N | Fixed 4.5V–5.5V VCC; TTL-compatible input thresholds; 25ns tPD at 5V | Compatible only with 5V systems; slower but more noise-immune in electrically noisy industrial settings | Select when interfacing legacy 5V TTL logic and EMI robustness outweighs speed needs |
Compared with SN74LVC241APWR and SN74HCT241N, the SN74AC241DBR uniquely bridges 2V–6V operation with sub-8ns speed - making it the only choice for mixed-voltage, timing-critical bus buffering without redesigning power architecture.
Availability
SN74AC241DBR is available at Aetrix Electronics and suitable for memory subsystem design, industrial bus interface, and clock distribution applications requiring stable component supply across extended product lifecycles.
Supply support for SN74AC241DBR 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 for industrial, automotive, and communications markets.
The SN74AC241DBR belongs to TI's AC logic family - engineered for high-speed, low-power, voltage-flexible buffering in legacy and mixed-voltage digital systems.
FAQ
What is the maximum operating voltage for SN74AC241DBR?
The SN74AC241DBR supports a supply voltage range of 2V to 6V. Its inputs tolerate voltages up to VCC + 0.5V, meaning at 6V VCC, inputs may reach 6.5V. This rail-to-rail input capability allows direct interfacing with higher-voltage signals without external protection - a key feature confirmed in Section 4.1 Absolute Maximum Ratings and Section 4.2 Recommended Operating Conditions of the SN74AC241DBR datasheet.
Does SN74AC241DBR support bidirectional data flow?
No, the SN74AC241DBR is a unidirectional octal buffer - it does not support bidirectional data transfer. Each channel (1A→1Y and 2A→2Y) operates strictly as a noninverting driver. Unlike transceivers, it lacks internal direction control or bus turnaround logic. This is explicitly defined in the Functional Block Diagram and Table 6-1 Function Tables, where outputs respond only to corresponding A inputs under OE control.
What is the recommended power supply decoupling for SN74AC241DBR?
Texas Instruments recommends placing a 0.1µF ceramic capacitor between VCC (Pin 20) and GND (Pin 10) as close as possible to the SN74AC241DBR package. This minimizes high-frequency supply noise and stabilizes switching transients. For systems with multiple logic devices, parallel 0.1µF and 1µF capacitors are advised - guidance verified in Section 7.1 Power Supply Recommendations of the SN74AC241DBR datasheet.
Can SN74AC241DBR be used in automotive applications?
The SN74AC241DBR is rated for –40°C to +85°C operation and meets industrial reliability standards, but it is not AEC-Q100 qualified. Its datasheet specifies no automotive-grade screening, qualification testing, or extended temperature variants (e.g., –40°C to +125°C). Therefore, SN74AC241DBR is intended for industrial, computing, and communications equipment - not safety-critical automotive ECUs or ADAS modules.
What package type is used for SN74AC241DBR?
The SN74AC241DBR uses a 20-pin SSOP (Shrink Small Outline Package), designated DB in TI's packaging nomenclature. Its dimensions are 7.2mm × 7.8mm body size with 0.65mm lead pitch and 2mm maximum height - confirmed in the Package Information table and DB0020A mechanical drawing referenced in the SN74AC241DBR datasheet.
SN74AC241DBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AC
- Package/Case:
- 20-SSOP (0.209", 5.30mm 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:
- 24mA, 24mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SSOP
SN74AC241DBR FAQ
1.How can I place an order for SN74AC241DBR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AC241DBR 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 SN74AC241DBR reliable?
The price and inventory of SN74AC241DBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AC241DBR is usually 5 days.
3.What payment methods are accepted for SN74AC241DBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AC241DBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AC241DBR?
SN74AC241DBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AC241DBR 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 SN74AC241DBR?
For technical support, including SN74AC241DBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AC241DBR requirements.
6.How does Aetrix verify that SN74AC241DBR is sourced from the original manufacturer or authorized distributors?
All SN74AC241DBR 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 SN74AC241DBR meets industry standards.
7.What is the process for return or replacement of SN74AC241DBR?
All SN74AC241DBR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AC241DBR, 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 SN74AC241DBR part is unused and in its original packaging.
Return procedure for SN74AC241DBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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