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Texas Instruments SN64BCT241DW
- Part No.:
- SN64BCT241DW
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
SN64BCT241DW.pdf
- Description:
- BUS DRIVER, BCT/FBT SERIES
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
SN64BCT241DW from Texas Instruments is an octal noninverting buffer/driver with dual 3-state outputs, designed for memory address and bus driving in 5-V systems. It features 20-pin SOIC (DW) package, –40°C to 85°C operating range, 4.5–5.5 V supply, 64 mA sink current per output, and high-impedance state during power-up/down.
For engineers reviewing the SN64BCT241DW datasheet, SN64BCT241DW pinout, SN64BCT241DW application, or SN64BCT241DW equivalent, key selection criteria include 3-state bus-driving capability, BiCMOS low standby current, ESD protection >2000 V, and compatibility with TTL-level control signals in legacy industrial and computing systems.
Technical Context
The SN64BCT241DW implements two independent 4-bit noninverting buffer sections (1A→1Y and 2A→2Y), each controlled by a dedicated active-low output-enable input (1OE and 2OE). Its BiCMOS architecture enables TTL-compatible input thresholds (VIL = 0.8 V, VIH = 2.0 V) while delivering CMOS-level output drive strength.
Each output supports true 3-state operation with guaranteed high-impedance behavior during power transitions, and switching performance is characterized at CL = 50 pF with propagation delays as low as 0.5 ns (tPLH) and disable times ≤9.4 ns (tPZL) across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures robust operation in noisy 5-V logic rails with ±10% tolerance. |
| Output Sink Current | 64 mA per Y output - drives standard TTL loads or multiple CMOS inputs without external buffering. |
| Propagation Delay | 0.5–5.9 ns (tPLH/tPHL) - enables high-speed address/data bus timing in sub-10 ns clock domains. |
| 3-State Disable Time | 1–9.4 ns (tPZL) - minimizes bus contention during enable/disable transitions in multiplexed systems. |
| Input Clamp Current | –18 mA - protects against negative transients on address/control lines per MIL-STD-883. |
| ESD Protection | >2000 V HBM - meets industrial handling requirements without additional external protection. |
| Operating Temperature | –40°C to 85°C - qualified for extended-temperature embedded control and instrumentation applications. |
Pinout & Package
SN64BCT241DW uses a 20-pin SOIC (DW) package with 0.300-inch body width and standard gull-wing lead form. Pin spacing is 0.050 inch (1.27 mm), compatible with IPC-7351B SOIC-20 footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low output-enable controls first/second 4-bit buffer section independently. |
| 2, 4, 6, 8 | 1A1–1A4 | Noninverting input signals for first buffer group (drives 1Y1–1Y4). |
| 11, 13, 15, 17 | 2A1–2A4 | Noninverting input signals for second buffer group (drives 2Y1–2Y4). |
| 18, 16, 14, 12 | 1Y1–1Y4 | 3-state noninverting buffered outputs from first group; high-Z when 1OE = high. |
| 9, 7, 5, 3 | 2Y1–2Y4 | 3-state noninverting buffered outputs from second group; high-Z when 2OE = high. |
| 10 | GND | Ground reference for all logic and output stages; must be low-impedance connection. |
| 20 | VCC | Positive supply for BiCMOS core; bypassing with 0.1 µF ceramic near pin required. |
Key Features
| Feature | Design Value |
|---|---|
| State-of-the-art BiCMOS design | Reduces ICCZ standby current to 4–10 mA - cuts system power in idle bus states vs. bipolar-only drivers. |
| High-impedance during power up/down | Guaranteed Hi-Z on all outputs when VCC is ramping - prevents bus conflicts during cold start or brownout. |
| Symmetrical active-low OE inputs | 1OE and 2OE share identical DC/AC specs - simplifies control logic design and timing analysis. |
| TTL-compatible input thresholds | VIL = 0.8 V, VIH = 2.0 V - interfaces directly with legacy 74LS/74ALS address generators without level shifters. |
| Bus-oriented output structure | Two independent 4-bit groups with separate OE - enables selective enabling of memory banks or peripheral segments. |
Applications
| Memory Address Buffering | System Bus Driver |
|---|---|
|
Use Scenario: Driving 16-bit address bus between microprocessor and SRAM/ROM in industrial PLC backplane. IC Role / Device Role / Timing Role: Noninverting buffer with independent 3-state control per 4-bit segment, isolating CPU from memory during DMA cycles. Use Value: Prevents address bus contention via precise tPZL ≤9.4 ns disable timing and eliminates need for discrete pull-ups due to strong 64 mA sink capability. |
Use Scenario: Interfacing 8-bit data bus between MCU and multiple peripheral ICs sharing common I/O lines. IC Role / Device Role / Timing Role: Dual-section 3-state driver enabling time-multiplexed access to UART, ADC, and display controller on same bus wires. Use Value: Independent 1OE/2OE control allows staggered enable timing, reducing simultaneous switching noise (SSN) versus single-OE octal drivers. |
| Clock Distribution Buffer | Legacy System Upgrade Interface |
|
Use Scenario: Distributing synchronized clock signal to four synchronous peripherals in test equipment rack. IC Role / Device Role / Timing Role: Low-skew noninverting buffer with matched tPLH/tPHL (0.5–5.9 ns) across all eight outputs. Use Value: Sub-6 ns max skew ensures setup/hold compliance for 100+ MHz peripherals without external delay matching. |
Use Scenario: Retrofitting modern microcontroller into vintage 1990s computer motherboard requiring TTL-compatible address drivers. IC Role / Device Role / Timing Role: Pin- and function-compatible replacement for obsolete SN74BCT241 in existing PCB layout. Use Value: Maintains identical DW package, pinout, and DC/AC specs - zero hardware changes needed for drop-in upgrade path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal noninverting 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74BCT241DW | Same pinout, identical function, but rated only for 0°C to 70°C; lower ESD rating (1500 V HBM). | Limited to commercial-temperature environments; not suitable for extended-temperature industrial deployment. | Select SN64BCT241DW when operating below 0°C or above 70°C is required. |
| SN74ACT241DW | CMOS-based; higher VIH (3.5 V), lower ICCZ (2 µA), but no guaranteed Hi-Z during power sequencing. | Requires clean power ramp; unsuitable for systems with uncontrolled power-up sequences or brownout recovery. | Choose SN64BCT241DW where robust power-cycle behavior and MIL-STD-883 ESD compliance are mandatory. |
Compared with SN74BCT241DW and SN74ACT241DW, the SN64BCT241DW uniquely combines extended temperature qualification (–40°C to 85°C), guaranteed high-impedance during VCC ramp, and >2000 V HBM ESD - making it the sole option for ruggedized legacy-system upgrades requiring full industrial reliability.
Availability
SN64BCT241DW is available at Aetrix Electronics and suitable for memory address buffering, system bus driving, clock distribution, and legacy system interface applications requiring stable component supply and long-term obsolescence management.
Supply support for SN64BCT241DW 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 founded in 1930, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN64BCT241DW belongs to TI's BCT logic family, engineered specifically for high-density, high-drive 3-state bus interfacing in 5-V systems where reliability under thermal stress and power transients is critical.
FAQ
What is the operating temperature range specified for the SN64BCT241DW?
The SN64BCT241DW is characterized for operation from –40°C to 85°C, meeting extended industrial temperature requirements. This specification is explicitly confirmed in the device's recommended operating conditions table and distinguishes it from commercial-grade variants like the SN74BCT241DW, which is limited to 0°C to 70°C. The SN64BCT241DW maintains full functionality and parameter compliance across this full range.
Does the SN64BCT241DW support true 3-state behavior during power-up and power-down sequences?
Yes, the SN64BCT241DW guarantees high-impedance output states during both power-up and power-down transitions, as documented in its functional description and electrical characteristics. This behavior is enabled by internal circuitry that forces outputs into Hi-Z when VCC is below operational threshold - a key reliability feature absent in many CMOS alternatives such as the SN74ACT241DW.
What is the maximum output sink current per Y pin on the SN64BCT241DW?
The SN64BCT241DW supports a maximum low-level output current (IOL) of 64 mA per Y output, verified under recommended operating conditions (VCC = 4.5 V, TA = –40°C to 85°C). This rating allows direct drive of multiple TTL inputs or termination networks without external current amplification, and is measured with VO ≤ 0.55 V.
Is the SN64BCT241DW pin-compatible with other members of the BCT24x family?
Yes, the SN64BCT241DW shares identical 20-pin SOIC (DW) package dimensions and pinout with SN64BCT240DW and SN64BCT244DW, differing only in logic configuration (noninverting vs. inverting outputs and OE polarity). This allows board-level substitution within the same footprint when signal polarity and control logic match system requirements.
What ESD protection level does the SN64BCT241DW provide, and how is it tested?
The SN64BCT241DW provides ESD protection exceeding 2000 V per MIL-STD-883 Method 3015 (Human Body Model). This rating is validated during device qualification and ensures robust handling in manufacturing and field service environments without requiring additional external TVS components on address or control lines.
SN64BCT241DW 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:
- -
SN64BCT241DW FAQ
1.How can I place an order for SN64BCT241DW through Aetrix?
Please submit a Request for Quotation (RFQ) for SN64BCT241DW 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 SN64BCT241DW reliable?
The price and inventory of SN64BCT241DW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN64BCT241DW is usually 5 days.
3.What payment methods are accepted for SN64BCT241DW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN64BCT241DW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN64BCT241DW?
SN64BCT241DW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN64BCT241DW 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 SN64BCT241DW?
For technical support, including SN64BCT241DW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN64BCT241DW requirements.
6.How does Aetrix verify that SN64BCT241DW is sourced from the original manufacturer or authorized distributors?
All SN64BCT241DW 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 SN64BCT241DW meets industry standards.
7.What is the process for return or replacement of SN64BCT241DW?
All SN64BCT241DW units undergo pre-shipment inspection (PSI). If there is an issue with SN64BCT241DW, 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 SN64BCT241DW part is unused and in its original packaging.
Return procedure for SN64BCT241DW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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