SN74BCT2241DWE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments SN74BCT2241DWE4 is an octal buffer and line driver with 3-state outputs, integrated 33 ohm output series resistors, dual enable controls, and 50 pF load capacity in a 20-pin SOIC package. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN74BCT2241DWE4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74BCT2241DWE4?
- Integrated 33 ohm output series resistors eliminate external termination components, reducing PCB BOM and dampening bus reflections on 50 pF loads
- Dual active-high and active-low output enable controls allow flexible bus arbitration without external inverter logic
- BiCMOS BCT-family outputs combine CMOS low quiescent power with bipolar drive strength suitable for backplane bus driving at 3.3 V to 5 V
What is SN74BCT2241DWE4 used for?
The SN74BCT2241DWE4 is an octal bus buffer and MOS driver designed for address and data bus isolation in microprocessor and DSP systems requiring signal integrity on capacitive loads. Its integrated 33 ohm series output resistors reduce ringing and overshoot on PCB traces up to 50 pF without external termination components, simplifying layout. The device is suited for use in computing boards, industrial PLCs, and communication equipment where dual-direction enable control and 3-state operation are required for bus sharing.
What are the specifications of SN74BCT2241DWE4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | OUTPUT ENABLE ACTIVE HIGH FOR ONE FUNCTION; 33 OHM OUTPUT SERIES RESISTOR |
| Control Type | ENABLE LOW/HIGH |
| Count Direction | UNIDIRECTIONAL |
| Family | BCT/FBT |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.012A |
| Number of Bits | 4 |
| Number of Functions | 2 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE WITH SERIES RESISTOR |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP20,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 76mA |
| Prop. Delay@Nom-Sup | 6.9ns |
| Propagation Delay (tpd) | 6.9ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
Where can I find the SN74BCT2241DWE4 datasheet?
SN74BCT2241DWE4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74BCT2241DWE4?
Compatible alternatives and drop-in replacements for SN74BCT2241DWE4:
Bus Driver, BCT/FBT Series, 2-Func, 4-Bit, True Output, BICMOS, PDSO20
Bus Driver, BCT/FBT Series, 2-Func, 4-Bit, True Output, BICMOS, PDSO20
Bus Driver, BCT/FBT Series, 2-Func, 4-Bit, True Output, BICMOS, PDSO20
Bus Driver, BCT/FBT Series, 2-Func, 4-Bit, True Output, BICMOS, PDSO20
Bus Driver, BCT/FBT Series, 2-Func, 4-Bit, True Output, BICMOS, PDSO20
Frequently Asked Questions
Why does SN74BCT2241DWE4 include internal 33 ohm series output resistors and how do they improve signal integrity?
The integrated 33 ohm output series resistors in the SN74BCT2241DWE4 form a matched termination network with the characteristic impedance of typical PCB traces, attenuating reflections caused by impedance discontinuities on 50 pF capacitive bus lines. This eliminates the need for external series resistors on each of the 8 output lines, reducing component count by 8 resistors and preventing overshoot that could damage CMOS receivers.
How do the dual enable controls of SN74BCT2241DWE4 benefit multi-master bus sharing designs?
The SN74BCT2241DWE4 provides both an active-low and an active-high output enable input, allowing two independent control sources to gate bus access without external inverter gates. In multi-master configurations with 2 or more bus masters each controlling 4 channels, this eliminates 1 to 2 74-series inverter ICs per board, saving PCB area and reducing propagation delay in bus enable paths by approximately 3 to 5 ns.
What load capacitance is SN74BCT2241DWE4 specified for, and what bus trace lengths does this support on FR4 PCBs?
The SN74BCT2241DWE4 is rated for 50 pF maximum load capacitance per output channel. On standard FR4 PCB material with 1.5 to 2 pF per cm trace capacitance, this supports driving bus traces of 25 to 33 cm before additional termination is required. The integrated 33 ohm series resistors further extend effective driving range by damping reflections at trace endpoints in point-to-multipoint bus topologies.
When would SN74BCT2241DWE4 be preferred over SN74BCT8244 in a boundary-scan testable system design?
The SN74BCT2241DWE4 is preferred when integrated series output termination resistors of 33 ohm are needed to reduce external BOM and the design does not require IEEE 1149.1 JTAG boundary scan. The SN74BCT8244, in contrast, adds boundary scan capability at the cost of a larger 24-pin package and no internal series resistors. For non-JTAG designs in 20-pin SOIC space, the BCT2241 offers a more compact and self-terminating solution on 50 pF bus lines.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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