SN74BCT25244NSR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments SN74BCT25244NSR is an octal bus driver and line driver featuring 25-ohm series resistors for incident wave switching and 3-state outputs. Supports unidirectional data flow with active-low enable control, 50 pF load capacitance, and 188 mA output current. Available in SOIC-24 package with RoHS-compliant lead-free construction, in stock worldwide with competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 24
- Lifecycle
- OBSOLETE
- Datasheet
- SN74BCT25244NSR 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 SN74BCT25244NSR?
- 25-ohm series resistors enable incident wave switching to suppress signal reflections on high-speed bus lines
- 3-state outputs with active-low enable control allow multiple drivers to share a common bus without contention
- BCT/FBT logic family delivers high-speed switching with TTL-compatible inputs and CMOS-compatible drive levels
What is SN74BCT25244NSR used for?
The SN74BCT25244NSR is designed for high-speed backplane and board-level bus buffering applications where signal integrity is critical, such as memory interfaces, CPU-to-peripheral data buses, and industrial control systems. Its 25-ohm incident wave switching architecture makes it ideal for systems operating at elevated frequencies where unterminated transmission lines would otherwise cause signal degradation. Engineers use this device in telecommunications equipment, network switching hardware, and embedded computing platforms requiring reliable octal data distribution.
What are the specifications of SN74BCT25244NSR?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | 25 OHM INCIDENT WAVE SWITCHING |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | BCT/FBT |
| JESD-30 Code | R-PDSO-G24 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.188A |
| Number of Bits | 4 |
| Number of Functions | 2 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP24,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Power Supply Current-Max (ICC) | 119mA |
| Prop. Delay@Nom-Sup | 6ns |
| Propagation Delay (tpd) | 6ns |
| 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 Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.60 |
Where can I find the SN74BCT25244NSR datasheet?
SN74BCT25244NSR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74BCT25244NSR?
Compatible alternatives and drop-in replacements for SN74BCT25244NSR:
Bus Driver, BCT/FBT Series, 2-Func, 4-Bit, True Output, BICMOS, PDSO24
Bus Driver, BCT/FBT Series, 2-Func, 4-Bit, True Output, BICMOS, PDSO24
Bus Driver, BCT/FBT Series, 2-Func, 4-Bit, True Output, BICMOS, PDSO24
Frequently Asked Questions
What is the purpose of the 25-ohm series resistors in the SN74BCT25244NSR?
The 25-ohm series resistors implement incident wave switching, a technique that matches the driver source impedance to the transmission line to absorb signal reflections at the source. This eliminates ringing and overshoot on high-speed bus lines without requiring external termination resistors, simplifying board design.
What is the maximum output current and load capacitance specification?
The SN74BCT25244NSR supports a maximum low-level output current (I_ol) of 188 mA and is characterized with a load capacitance (C_L) of 50 pF. These parameters ensure robust drive capability for heavily loaded bus lines while maintaining signal integrity at high switching speeds.
In what package does the SN74BCT25244NSR come and is it RoHS compliant?
The SN74BCT25244NSR is supplied in a 24-pin Small Outline IC (SOIC) package, JEDEC code R-PDSO-G24. It is fully RoHS compliant with a lead-free (Pb-free) construction, making it suitable for use in environmentally regulated end products across consumer, industrial, and automotive applications.
How does the enable control work on the SN74BCT25244NSR?
The device uses an active-low enable input to control the 3-state outputs. When the enable pin is driven low, the outputs are active and data flows from inputs to outputs in the unidirectional path. When the enable is driven high, all eight output drivers enter the high-impedance state, effectively disconnecting the device from the bus.
What are common alternatives or compatible replacements for the SN74BCT25244NSR?
Pin-compatible alternatives within the BCT/FBT logic family include the SN74BCT244 and SN74ABTE16244 from Texas Instruments. Other manufacturers such as ON Semiconductor and NXP offer functional equivalents in the 25-ohm buffered driver category. Always verify timing parameters, I/O voltage levels, and package dimensions before substituting components in a design.
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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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