SN74LV8151PWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74LV8151PWG4 is a 10-bit universal Schmitt-trigger buffer IC from Texas Instruments in the LV logic family, featuring one Schmitt-trigger inverter and one Schmitt-trigger buffer with active-low output enable. It supports unidirectional bus driving with 50 pF load tolerance and 12 mA output current in a 24-pin TSSOP package, suited for mixed-voltage signal conditioning.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 24
- Lifecycle
- OBSOLETE
- Datasheet
- SN74LV8151PWG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74LV8151PWG4?
- 10-bit universal buffer with Schmitt-trigger inputs
- Includes one Schmitt-trigger inverter and one Schmitt-trigger buffer
- Active-low output enable for bus isolation control
- 50 pF load capacitance tolerance per channel
- Maximum output low current (IOL) of 12 mA
- LV logic family supports 1.65 V to 5.5 V supply operation
- 24-pin TSSOP (PDSO-G24) surface-mount package
What is SN74LV8151PWG4 used for?
The SN74LV8151PWG4 is used in mixed-voltage digital systems where slow or noisy input signals need Schmitt-trigger conditioning before driving downstream logic or bus loads. It suits microcontroller I/O expansion, FPGA interface buffers, and industrial sensor front-ends operating in electrically noisy environments, where the hysteresis of the Schmitt-trigger inputs prevents false switching due to signal bounce or noise on lines up to 50 pF.
What are the specifications of SN74LV8151PWG4?
| YTEOL | 0 |
| Additional Feature | ONE SCHMITT TRIGGER INVERTER, ONE SCHMITT TRIGGER BUFFER |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | LV/LV-A/LVX/H |
| JESD-30 Code | R-PDSO-G24 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.012A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | CONFIGURABLE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP24,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.02mA |
| Prop. Delay@Nom-Sup | 34ns |
| Propagation Delay (tpd) | 57ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | YES |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 2.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| 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 |
| Country of Origin | Malaysia |
Where can I find the SN74LV8151PWG4 datasheet?
SN74LV8151PWG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74LV8151PWG4?
Compatible alternatives and drop-in replacements for SN74LV8151PWG4:
Bus Driver, LV/LV-A/LVX/H Series, 10-Func, 8-Bit, Configurable Output, CMOS, PDSO24
Bus Driver, LV/LV-A/LVX/H Series, 1-Func, 8-Bit, Configurable Output, CMOS, PDSO24
Frequently Asked Questions
How does the Schmitt-trigger input of the SN74LV8151PWG4 improve signal integrity on noisy bus lines?
Schmitt-trigger inputs provide hysteresis, typically 0.3 V to 1 V depending on supply voltage, so the input threshold differs for rising and falling edges. This prevents multiple output transitions caused by slow or noisy signals that hover near the switching threshold. On a 50 pF loaded bus in an industrial controller cabinet with relay switching noise, the hysteresis suppresses false transitions that would corrupt downstream logic.
Which supply voltages does the SN74LV8151PWG4 support, and how does this help in mixed-voltage designs?
The SN74LV8151PWG4 operates from 1.65 V to 5.5 V supply, allowing it to serve as an interface buffer between 1.8 V, 2.5 V, 3.3 V, and 5 V logic sections on the same board. The LV logic family guarantees valid output levels across this range, simplifying multi-voltage bus structures in microprocessor systems with separate core (1.8 V) and I/O (3.3 V) domains.
How does the 12 mA output drive current of the SN74LV8151PWG4 support driving multiple downstream loads?
With a maximum output low current (IOL) of 12 mA, the SN74LV8151PWG4 can sink sufficient current to drive several standard logic inputs simultaneously, each typically drawing 1 µA to 100 µA. At 50 pF per channel, the device also handles moderate bus capacitance without significant degradation of signal edges, making it practical for buffering 8 or more logic inputs from a single IC in multi-board backplane designs.
When is the SN74LV8151PWG4 preferred over a standard non-Schmitt buffer in sensor interface circuits?
The SN74LV8151PWG4 is preferred when sensor output signals have slow edges, contact bounce, or EMI-induced noise that a standard CMOS buffer would translate into multiple output pulses. For example, proximity sensors with 1 µs to 100 µs rise times, or mechanical switches with contact bounce lasting several milliseconds, benefit from the built-in hysteresis that filters out transitions below the noise threshold, producing clean digital outputs for downstream counters or microcontrollers.
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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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