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Texas Instruments SN74BCT241DW
- Part No.:
- SN74BCT241DW
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74BCT241DW.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,660
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Product details
Overview
SN74BCT241DW from Texas Instruments is an octal noninverting buffer/driver with 3-state outputs, designed for memory address and bus driving in 5-V TTL-compatible systems. It features dual independent 4-bit channels, active-low output-enable (1OE/2OE), 128-mA low-level output drive, 10-mA ICCZ quiescent current, and SOIC-20 package. It operates from 0°C to 70°C and supports high-density bus interfacing in industrial control backplanes.
For engineers reviewing the SN74BCT241DW datasheet, SN74BCT241DW pinout, SN74BCT241DW application, or SN74BCT241DW equivalent, key selection criteria include 3-state bus contention control, BiCMOS output drive strength, input/output voltage tolerance up to 7 V, and compatibility with legacy TTL and CMOS logic families.
Technical Context
The SN74BCT241DW implements two independent 4-bit noninverting buffer sections, each with dedicated active-low output-enable control (1OE for Y1–Y4, 2OE for Y5–Y8). Its BiCMOS architecture combines bipolar input stages for TTL-level compatibility and MOS output transistors for low ICCZ and high sink current.
Each output supports 3-state operation with guaranteed VOH ≥ 2.4 V at IOH = –15 mA and VOL ≤ 0.55 V at IOL = 64 mA under VCC = 4.5 V. Input clamp current exceeds –18 mA, and ESD protection exceeds 2000 V per MIL-STD-883C Method 3015.
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. |
| IOL (Max) | 64 mA - Supports direct drive of heavy capacitive bus loads without external buffers. |
| ICCZ (Max) | 10 mA - Low quiescent current in 3-state disables power-sensitive system standby modes. |
| tPLH/tPHL | 0.5–4.9 ns - Enables high-speed address/data buffering in sub-10-ns timing-critical paths. |
| VIH/VIL | 2.0 V / 0.8 V - Fully compatible with standard TTL input thresholds for seamless integration. |
| ESD Rating | >2000 V HBM - Provides robust handling margin during board assembly and field service. |
| Operating Temp | 0°C to 70°C - Qualified for commercial-grade embedded and industrial control environments. |
Pinout & Package
SN74BCT241DW is housed in a 20-pin SOIC (Small Outline Integrated Circuit) package (DW suffix), 7.5 mm wide, RoHS-compliant with CU NIPDAU finish and JEDEC Level-1 moisture sensitivity rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low output-enable controls first and second 4-bit buffer sections independently. |
| 2, 4, 6, 8, 11, 13, 15, 17 | 1A1–1A4, 2A1–2A4 | Eight buffered inputs - split into two groups of four for dual-bus or split-address applications. |
| 3, 5, 7, 9, 12, 14, 16, 18 | 1Y1–1Y4, 2Y1–2Y4 | Eight 3-state noninverting outputs - each mirrors its corresponding A input when OE is low. |
| 10 | GND | Power ground reference for all internal logic and output stages. |
| 20 | VCC | 5-V supply input powering both BiCMOS input and output circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| BiCMOS Output Stage | Delivers 64-mA sink current while maintaining <10-mA ICCZ - enables high-drive + low-power coexistence. |
| Dual Independent OE Control | Allows selective 3-state disabling of either 4-bit channel - critical for time-multiplexed bus arbitration. |
| TTL-Compatible Inputs | Accepts standard 0.8 V/2.0 V VIH/VIL thresholds - eliminates level-shifting in mixed-logic systems. |
| 7-V Input/Output Tolerance | Withstands overvoltage transients up to 7 V on inputs and outputs - enhances system-level surge resilience. |
| SOIC-20 RoHS Package | Green (RoHS & no Sb/Br) construction with CU NIPDAU finish - meets modern environmental compliance requirements. |
Applications
| Memory Address Buffering | Bus Transceiver Interface |
|---|---|
Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM chips on a shared memory bus. IC Role / Device Role / Timing Role: Noninverting 3-state buffer isolating CPU address outputs and enabling chip-select-based bus sharing. Use Value: 64-mA sink capability ensures clean signal edges across 100+ pF net capacitance; dual OE allows interleaved access to two memory banks. | Use Scenario: Bidirectional data bus isolation between an FPGA and legacy parallel peripheral (e.g., printer port or ADC interface). IC Role / Device Role / Timing Role: Unidirectional buffer section used in each direction with OE controlled by direction signal. Use Value: Sub-5-ns propagation delay preserves setup/hold margins; 7-V I/O tolerance accommodates peripheral-side voltage excursions. |
| Clock Distribution Fanout | Industrial Backplane Driver |
Use Scenario: Distributing a 25-MHz system clock to eight synchronous logic modules on a PCB. IC Role / Device Role / Timing Role: Low-skew noninverting driver replicating clock signal with matched trace-length routing. Use Value: Symmetrical tPLH/tPHL (≤4.9 ns) minimizes duty-cycle distortion; low Co (11 pF) reduces capacitive loading on source clock. | Use Scenario: Interfacing PLC CPU outputs to 24-V discrete I/O modules via optocoupler inputs on a DIN-rail mounted backplane. IC Role / Device Role / Timing Role: Level-translating buffer converting 5-V logic to 24-V compatible drive signals through external pull-up networks. Use Value: 7-V output voltage tolerance permits safe use with 24-V pull-ups; high IOL sustains logic-low voltage under 10-kΩ load conditions. |
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 |
|---|---|---|---|
| SN74ACT241DW | AC-family CMOS; 4.5–5.5 V VCC; 24-mA IOL; 10-pF Ci; faster tPLH (2.5 ns typ) | Lower drive strength; better noise immunity; higher speed but less bus-loading margin | Preferred where low power and high noise immunity outweigh drive requirement |
| SN74LS241N | LS-TTL family; 4.75–5.25 V VCC; 8-mA IOL; 45-mA ICC; slower tPLH (15 ns max) | Higher ICC, lower drive, wider VCC tolerance; legacy footprint compatibility | Used only for direct LS-TTL system replacement with no performance upgrade intent |
Compared with SN74BCT241DW, SN74ACT241DW offers superior speed and noise margin but cannot drive heavy bus loads, while SN74LS241N provides pin-compatible drop-in replacement in legacy LS systems at the cost of significantly higher power and reduced output strength.
Availability
SN74BCT241DW is available at Aetrix Electronics and suitable for memory address buffering, industrial backplane interfacing, and clock distribution applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SN74BCT241DW 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 delivering analog, embedded processing, and logic solutions since 1930, headquartered in Dallas, Texas.
The SN74BCT241DW belongs to TI's 74BCT logic family, engineered for high-speed, high-drive 3-state bus interface in commercial-grade 5-V systems where TTL compatibility and robust output strength are essential.
FAQ
What is the maximum output sink current specification for SN74BCT241DW?
The SN74BCT241DW is rated for a maximum low-level output current (IOL) of 64 mA per output under recommended operating conditions (VCC = 4.5 V, TA = 0°C to 70°C). This value is confirmed in the "Electrical Characteristics" table of the official SCBS005D datasheet and reflects sustained DC drive capability into resistive or moderately capacitive loads without violating VOL limits.
Does SN74BCT241DW support 3.3-V logic inputs?
No, SN74BCT241DW does not guarantee reliable operation with 3.3-V logic inputs. Its input thresholds are specified for TTL compatibility: VIL = 0.8 V (max) and VIH = 2.0 V (min) at VCC = 5 V. A 3.3-V high-level signal may fall below the required VIH margin, risking indeterminate switching. For mixed-voltage systems, level translation or a 3.3-V–compatible buffer such as SN74LVC241A is recommended instead of SN74BCT241DW.
What is the function of pins 1 and 19 on SN74BCT241DW?
Pins 1 and 19 on SN74BCT241DW are the active-low output-enable terminals 1OE and 2OE, respectively. When pulled low, 1OE enables the first four outputs (1Y1–1Y4), and 2OE enables the second four outputs (2Y1–2Y4). When held high, the corresponding outputs enter high-impedance (3-state) mode. This dual-OE architecture allows independent control of two 4-bit data paths - a core feature confirmed in the FUNCTION TABLES and logic diagram of the SN74BCT241DW datasheet.
Is SN74BCT241DW pin-compatible with SN74LS241N?
Yes, SN74BCT241DW is pin-compatible with SN74LS241N: both are 20-pin devices with identical pin assignments for inputs, outputs, GND, VCC, and OE signals. However, SN74BCT241DW uses BiCMOS technology for higher drive and lower ICCZ, whereas SN74LS241N is bipolar LS-TTL. The pinout match enables direct socket replacement in existing PDIP layouts if the SOIC-20 DW package is adapted via adapter board or re-layout.
What is the thermal operating range for SN74BCT241DW?
The SN74BCT241DW is characterized for operation from 0°C to 70°C ambient temperature, as explicitly stated in the "Recommended Operating Conditions" table of the SCBS005D datasheet. This commercial-grade temperature range applies specifically to the SN74BCT241 variant (not the military-grade SN54BCT241, which operates from –55°C to 125°C). All electrical specifications for SN74BCT241DW are guaranteed within this 0°C–70°C range.
SN74BCT241DW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74BCT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- 15mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
SN74BCT241DW FAQ
1.How can I place an order for SN74BCT241DW through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74BCT241DW 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 SN74BCT241DW reliable?
The price and inventory of SN74BCT241DW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74BCT241DW is usually 5 days.
3.What payment methods are accepted for SN74BCT241DW?
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4.How is shipping managed for SN74BCT241DW?
SN74BCT241DW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74BCT241DW 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 SN74BCT241DW?
For technical support, including SN74BCT241DW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74BCT241DW requirements.
6.How does Aetrix verify that SN74BCT241DW is sourced from the original manufacturer or authorized distributors?
All SN74BCT241DW 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 SN74BCT241DW meets industry standards.
7.What is the process for return or replacement of SN74BCT241DW?
All SN74BCT241DW units undergo pre-shipment inspection (PSI). If there is an issue with SN74BCT241DW, 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 SN74BCT241DW part is unused and in its original packaging.
Return procedure for SN74BCT241DW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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