SN74F541DB Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74F541 is an 8-channel non-inverting buffer and line driver from Texas Instruments' F (FAST) bipolar TTL family, operating from a 4.5 V to 5.5 V supply with tri-state outputs for direct bus interfacing. It provides 64 mA output source and sink current for high-drive applications, housed in a compact 20-pin SSOP package ideal for address and data bus buffering in industrial and computing systems.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- SN74F541DB Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74F541DB?
- 8-channel non-inverting buffer with independent tri-state outputs
- High output drive: 64 mA for driving heavy capacitive bus loads
- Supply range: 4.5 V to 5.5 V FAST bipolar TTL family
- Two active-low output-enable pins for independent half-bus control
- Propagation delay typically under 4 ns for high-speed bus driving
- 20-pin SSOP package for compact board-level bus interface designs
What is SN74F541DB used for?
The SN74F541 is used as a bus buffer and line driver in address and data bus interfaces for CPUs, FPGAs, and memory controllers where high output drive current of 64 mA is needed to charge long PCB traces and multiple device inputs. It is commonly deployed in industrial backplane systems, VME bus cards, and embedded computing boards requiring fast, non-inverting signal buffering with tri-state output control. The device also serves in clock distribution and unidirectional bus isolation circuits where strong 5 V TTL drive strength and sub-4 ns propagation delay are essential.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SN74F541DB datasheet?
SN74F541DB Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74F541DB?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many buffer channels does the SN74F541DB provide, and how are the tri-state outputs controlled?
The SN74F541DB provides 8 non-inverting buffer channels. The tri-state outputs are controlled by two active-low output-enable pins (OE1 and OE2), which when both asserted LOW, enable all 8 outputs simultaneously. When either OE pin is HIGH, all outputs are placed in the high-impedance state, allowing safe bus sharing with other 5 V TTL devices.
What output drive current does the SN74F541 offer, and why is this important for driving long PCB bus traces?
The SN74F541 can source and sink up to 64 mA per output, which is significantly higher than the 8 mA or 12 mA offered by standard CMOS buffers. This high drive strength is critical for driving capacitive bus traces longer than 10 cm on backplane-style PCBs, where the distributed capacitance can exceed 50 pF and requires strong current sourcing to maintain fast edge rates.
Is the SN74F541 compatible with 5 V CMOS logic inputs, or is it restricted to TTL-level input thresholds?
The SN74F541 belongs to the F-series bipolar TTL family and uses TTL input thresholds: VIL typically 0.8 V and VIH typically 2.0 V. It accepts standard 5 V CMOS logic outputs (VOH ≥ 4.5 V, VOL ≤ 0.5 V) without any issue, as these comfortably fall within the TTL input window, making the SN74F541 compatible with both CMOS and TTL driving stages in 5 V systems.
In which industrial or computing applications is an 8-channel bus buffer like the SN74F541 typically used?
The SN74F541 is commonly used in industrial backplane bus interfaces, VME and ISA bus address drivers, and memory address latching circuits where 8 parallel signals must be driven simultaneously with high current at 5 V TTL levels. It also appears in FPGA I/O expansion cards and legacy embedded single-board computers as a buffer between weak-drive logic outputs and heavy PCB trace loads exceeding 100 pF total capacitance.
What is the propagation delay of the SN74F541, and how does this compare to the 74LS541?
The SN74F541 achieves a typical propagation delay of approximately 4 ns at 5 V supply, compared to approximately 12 ns for the 74LS541. This 3x speed advantage makes the F-series device preferable in systems running data buses above 50 MHz, such as synchronous SRAM interfaces and fast address decoders where setup time margins are tight.
Related Guides
STM32H725IGT3 Selection Guide: Memory, Package, Temperature, and Supply
Choose the right STM32H725 variant by comparing Flash, package, pin count, temperature grade, connectivity, and production requirements.
Aug 1, 2026
STM32H725IGT3 High-Performance MCU Design Guide
Design STM32H725IGT3 systems for reliable 550 MHz operation with practical power, clock, cache, DMA, PCB, ADC, and recovery guidance.
Jul 31, 2026
150141VS73100 Violet SMD LED Selection Guide: Color, Drive, and Sourcing
Select the 150141VS73100 by wavelength, brightness, drive current, 3528 fit, reliability, and traceable sourcing requirements.
Jul 31, 2026
STEF05SGR 5 V eFuse Protection Design Guide
Design a reliable 5 V STEF05SGR eFuse stage with current-limit math, capacitor sizing, thermal analysis, fault recovery, and PCB layout guidance.
Jul 30, 2026
Why Buy from FindMyChip
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.
More from Texas Instruments
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit