SN74LV3T99-Q1 - Automotive Configurable Logic Gate | Texas Instruments
MPN: SN74LV3T99-Q1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.85 | $0.85 |
| 10 | $0.76 | $7.60 |
| 100 | $0.68 | $68.00 |
| 500 | $0.61 | $305.00 |
| 1,000 | $0.55 | $550.00 |
Drop-in alternatives for SN74LV3T99-Q1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
SN74LV3T99PWR
β Drop-Inπ Reference alternative (not in catalog)
SN74LV3T99QDGSRQ1
β Drop-Inπ Reference alternative (not in catalog)
SN74AHC3G99-Q1
β Drop-Inβ In Stock
$0.55 / Unit
View Datasheet βSN74LVC1G99
β Drop-Inπ Reference alternative (not in catalog)
74LVC1G99
β Drop-Inπ Reference alternative (not in catalog)
SN74LV3T99-Q1 Maximum Ratings & Electrical Characteristics
| Number of Gates | 3 |
| Number of Inputs per Gate | 4 |
| Output Type | 3-State |
| Logic Function | Y = (A β’ /C + B β’ C) β D |
| Supply Voltage Range | 1.8 V to 5.5 V |
| Input Hysteresis | Schmitt-trigger |
| Operating Temperature Range | -40Β°C to +125Β°C |
| Package Type | 20-TSSOP (PW) |
| Mounting Type | Surface Mount |
| Automotive Qualification | AEC-Q100 |
| Propagation Delay Time | [DATA_NEEDED: Propagation delay time] |
| Output Current | [DATA_NEEDED: Output current] |
| Input Capacitance | [DATA_NEEDED: Input capacitance] |
| RoHS Status | Compliant |
| MSL Level | [DATA_NEEDED: MSL level] |
SN74LV3T99-Q1 Pin Configuration
| Pin 1 | 1A β Input A of gate 1 |
| Pin 2 | 1B β Input B of gate 1 |
| Pin 3 | 1C β Input C of gate 1 |
| Pin 4 | 1D β Input D of gate 1 |
| Pin 5 | 1Y β Output Y of gate 1 |
| Pin 6 | 2A β Input A of gate 2 |
| Pin 7 | 2B β Input B of gate 2 |
| Pin 8 | 2C β Input C of gate 2 |
| Pin 9 | 2D β Input D of gate 2 |
| Pin 10 | 2Y β Output Y of gate 2 |
| Pin 11 | 3A β Input A of gate 3 |
| Pin 12 | 3B β Input B of gate 3 |
| Pin 13 | 3C β Input C of gate 3 |
| Pin 14 | 3D β Input D of gate 3 |
| Pin 15 | 3Y β Output Y of gate 3 |
| Pin 16 | GND β Ground |
| Pin 17 | OE1 β Output enable for gate 1 |
| Pin 18 | OE2 β Output enable for gate 2 |
| Pin 19 | OE3 β Output enable for gate 3 |
| Pin 20 | VCC β Power supply |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
SN74LV3T99-Q1 is suitable for 6 applications: Automotive Body Control Module, Infotainment System, Industrial Automation, Test and Measurement Equipment, Portable Electronics, Networking Equipment.
Automotive Body Control Module
The SN74LV3T99-Q1 is used in automotive body control modules for signal conditioning and level shifting. Its wide supply range (1.8V to 5.5V) allows interfacing with sensors and microcontrollers at different voltage levels. The Schmitt-trigger inputs reject noise from automotive electrical systems, ensuring reliable logic operations. The 3-state outputs enable bus sharing, reducing wiring complexity. AEC-Q100 qualification ensures operation over -40Β°C to +125Β°C, meeting automotive reliability standards.
Recommended
Infotainment System
In infotainment systems, the SN74LV3T99-Q1 provides configurable logic for signal routing and level shifting between audio/video processors and display interfaces. Its 3-state outputs allow multiple sources to share a common bus, while the Schmitt-trigger inputs handle slow or noisy signals from user interfaces. The wide supply range supports mixed-voltage designs, and the automotive grade ensures reliable operation in the vehicle environment. The device's small TSSOP package saves board space in space-constrained infotainment units.
Recommended
Industrial Automation
The SN74LV3T99-Q1 is used in industrial automation for implementing custom logic functions and level shifting between 24V sensors and 3.3V/5V logic. Its Schmitt-trigger inputs provide noise immunity in electrically noisy factory environments. The 3-state outputs enable bus communication in PLCs and motor controllers. The wide supply range allows operation from various power rails, and the configurable gates reduce component count. The device's automotive-grade reliability also suits industrial temperature ranges.
Recommended
Test and Measurement Equipment
In test and measurement equipment, the SN74LV3T99-Q1 provides configurable logic for signal routing and control. Its 3-state outputs allow multiple instruments to share a common bus, while the Schmitt-trigger inputs handle slow or noisy signals from probes and sensors. The wide supply range supports various logic levels, and the configurable gates enable flexible signal conditioning. The device's small package is ideal for compact benchtop instruments, and its low power consumption is beneficial for battery-operated equipment.
Recommended
Portable Electronics
The SN74LV3T99-Q1 is suitable for portable electronics due to its low power consumption and wide supply range (1.8V to 5.5V). It can be used for level shifting between battery-powered microcontrollers and peripherals, and its Schmitt-trigger inputs ensure reliable operation with slow battery ramps. The 3-state outputs allow power saving by isolating unused circuits. The small TSSOP package is ideal for space-constrained designs like wearables and handheld devices.
Recommended
Networking Equipment
In networking equipment, the SN74LV3T99-Q1 is used for signal conditioning and level shifting between different logic families. Its 3-state outputs enable bus sharing in routers and switches, while the Schmitt-trigger inputs handle noisy signals from long traces. The wide supply range supports mixed-voltage designs, and the configurable gates allow implementation of custom logic functions. The automotive-grade reliability ensures operation in harsh environments, and the small package is suitable for high-density PCBs.
Recommended
Recommended Products Summary
Engineering reference data for SN74LV3T99-Q1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SN74LV3T99PWR | SN74LV3T99QDGSRQ1 | SN74AHC3G99-Q1 |
|---|---|---|---|---|
| Package | 20-TSSOP | 20-TSSOP | 20-VSSOP | 20-TSSOP |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Number of Gates | 3 | 3 | 3 | 3 |
| Supply Voltage Range | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V | 2V to 5.5V |
| Automotive Grade | Yes (AEC-Q100) | No | Yes (AEC-Q100) | Yes (AEC-Q100) |
| Logic Function | Y = (A β’ /C + B β’ C) β D | Y = (A β’ /C + B β’ C) β D | Y = (A β’ /C + B β’ C) β D | [DATA_NEEDED] |
| Schmitt-Trigger Inputs | Yes | Yes | Yes | Yes |
| 3-State Outputs | Yes | Yes | Yes | Yes |
Key Differentiators
- Automotive AEC-Q100 qualification (vs SN74LV3T99PWR)
- Three independent configurable gates (vs SN74LVC1G99)
- Wide supply range with level shifting (vs SN74AHC3G99-Q1)
Design Notes
Place a 0.1uF ceramic capacitor close to the VCC pin and a 10uF bulk capacitor nearby to decouple the supply. The wide supply range (1.8V to 5.5V) allows operation from various rails, but ensure the supply is stable and within the absolute maximum ratings. According to TI's guidelines, proper decoupling minimizes noise and ensures reliable operation.
Keep traces between the SN74LV3T99-Q1 and other logic devices short to minimize parasitic capacitance and signal integrity issues. The Schmitt-trigger inputs tolerate slow edges, but for high-speed signals, maintain controlled impedance. Use a solid ground plane to reduce noise. The 3-state outputs should be connected to a bus with proper pull-up resistors to avoid floating states.
Ensure the output enable (OE) pins are properly driven to avoid bus contention. When multiple devices share a bus, only one should be enabled at a time. Also, do not exceed the maximum output current or voltage ratings. The Schmitt-trigger inputs have hysteresis, but avoid exceeding the input voltage range. According to the datasheet, the device is designed for robust operation, but proper handling is essential.
Compliance Information
RoHS compliant per TI product page. AEC-Q100 qualified for automotive.
