SN74AHC3G99-Q1 - Triple Configurable Logic Gate | TI Automotive
MPN: SN74AHC3G99-Q1 ✓ 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 SN74AHC3G99-Q1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
SN74AHCT3G99-Q1
✅ Drop-In✓ In Stock
$0.38 / Unit
View Datasheet →SN74AHC3G99
✅ Drop-In📋 Reference alternative (not in catalog)
SN74LV3T99-Q1
✅ Drop-In✓ In Stock
$0.36 / Unit
View Datasheet →SN74AHC9541-Q1
✅ Drop-In✓ In Stock
$0.74 / Unit
View Datasheet →SN74AHCT7541-Q1
✅ Drop-In✓ In Stock
$0.32 / Unit
View Datasheet →SN74AHC3G99-Q1 Maximum Ratings & Electrical Characteristics
| Supply Voltage Range | 2 V to 5.5 V |
| Number of Gates | 3 |
| Number of Inputs per Gate | 4 |
| Output Type | 3-State |
| Logic Function | Y = (A • /C + B • C) ⊕ D |
| Input Type | Schmitt-Trigger |
| Maximum Output Load Capacitance | 50 pF |
| Propagation Delay (typ) | 7.5 ns at 5 V |
| Operating Temperature Range | -40°C to +125°C |
| Package | 20-pin TSSOP (PW) |
| Mounting Type | Surface Mount |
| Technology | Advanced High-Speed CMOS (AHC) |
| AEC-Q100 Qualified | Yes |
| RoHS Status | Compliant |
| MSL Level | [DATA_NEEDED: MSL Level] |
SN74AHC3G99-Q1 Pin Configuration
| Pin 1 | 1A — Input A of gate 1 |
| Pin 2 | 1B — Input B of gate 1 |
| Pin 3 | 1C — Input C of gate 1 |
| Pin 4 | 1D — Input D of gate 1 |
| Pin 5 | 1Y — Output of gate 1 |
| Pin 6 | 2A — Input A of gate 2 |
| Pin 7 | 2B — Input B of gate 2 |
| Pin 8 | 2C — Input C of gate 2 |
| Pin 9 | 2D — Input D of gate 2 |
| Pin 10 | 2Y — Output of gate 2 |
| Pin 11 | 3A — Input A of gate 3 |
| Pin 12 | 3B — Input B of gate 3 |
| Pin 13 | 3C — Input C of gate 3 |
| Pin 14 | 3D — Input D of gate 3 |
| Pin 15 | 3Y — Output of gate 3 |
| Pin 16 | GND — Ground |
| Pin 17 | OE1 — Output enable for gate 1 (active low) |
| Pin 18 | OE2 — Output enable for gate 2 (active low) |
| Pin 19 | OE3 — Output enable for gate 3 (active low) |
| Pin 20 | VCC — 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
SN74AHC3G99-Q1 is suitable for 6 applications: Automotive Body Control Modules, Infotainment Systems, Industrial Automation, Signal Conditioning, Level Translation, Portable Electronics.
Automotive Body Control Modules
The SN74AHC3G99-Q1 is ideal for automotive body control modules (BCMs) due to its AEC-Q100 qualification, wide supply voltage range (2V to 5.5V), and Schmitt-trigger inputs that reject electrical noise from the vehicle's 12V bus. Its configurable logic allows implementing multiple functions like MUX and AND gates in a single device, reducing component count and PCB area. The 3-state outputs enable bus sharing with other modules, while the 50pF load drive capability ensures reliable signaling to downstream loads. Operating from -40°C to +125°C, it withstands harsh automotive environments. Place 0.1uF decoupling capacitors near VCC to minimize noise coupling.
Recommended
Infotainment Systems
In infotainment systems, the SN74AHC3G99-Q1 provides configurable logic for signal routing and control functions. Its high-speed operation (7.5ns propagation delay at 5V) supports fast data processing, while the Schmitt-trigger inputs clean up noisy signals from displays and audio interfaces. The 3-state outputs allow multiple peripherals to share a common data bus, simplifying system architecture. The wide supply range (2V to 5.5V) enables direct interface with both 3.3V and 5V logic, reducing the need for level shifters. Its compact 20-pin TSSOP package fits space-constrained infotainment PCBs. Ensure output load capacitance stays below 50pF to maintain signal integrity.
Recommended
Industrial Automation
The SN74AHC3G99-Q1 is well-suited for industrial automation equipment, where reliable logic operations are critical. Its wide supply voltage range (2V to 5.5V) accommodates various industrial power rails, and the Schmitt-trigger inputs provide noise immunity in electrically noisy factory environments. The configurable logic allows designers to implement custom Boolean functions without multiple discrete gates, saving board space and reducing BOM cost. The 3-state outputs enable bus-oriented architectures for sensor and actuator control. With an operating temperature range of -40°C to +125°C, it operates reliably in extreme industrial conditions. Use proper decoupling and keep load capacitance under 50pF for optimal performance.
Recommended
Signal Conditioning
The SN74AHC3G99-Q1 excels in signal conditioning applications, where its Schmitt-trigger inputs reshape slow or noisy signals into clean digital levels. The configurable logic can implement functions like AND, OR, and XOR to combine or filter signals. The 3-state outputs allow the device to be disconnected from the bus when not in use, preventing signal contention. Its wide supply range (2V to 5.5V) makes it compatible with various logic families, and the high-speed operation (7.5ns propagation delay) ensures minimal signal delay. This makes it ideal for conditioning sensor outputs, encoder signals, and communication lines in automotive and industrial systems. Keep load capacitance below 50pF to preserve signal edges.
Recommended
Level Translation
The SN74AHC3G99-Q1 can be used for level translation between 3.3V and 5V logic domains, thanks to its wide supply voltage range (2V to 5.5V). By configuring the logic gates appropriately, it can buffer and translate signals while providing Schmitt-trigger noise immunity. The 3-state outputs allow the device to be used in bidirectional bus applications with proper control. Its high-speed operation (7.5ns propagation delay) ensures minimal signal skew. This makes it suitable for interfacing microcontrollers with peripherals operating at different voltage levels in automotive and industrial systems. Ensure the output load capacitance does not exceed 50pF to maintain signal integrity.
Recommended
Portable Electronics
In portable electronics, the SN74AHC3G99-Q1 offers a compact, low-power solution for implementing configurable logic functions. Its wide supply range (2V to 5.5V) supports battery-powered designs, and the low quiescent current of AHC technology extends battery life. The Schmitt-trigger inputs provide noise immunity in compact, densely packed PCBs. The 3-state outputs allow power gating of peripherals by disconnecting them from the bus. The small 20-pin TSSOP package is ideal for space-constrained devices like wearables and handheld instruments. Operating from -40°C to +125°C, it suits a wide range of environments. Use 0.1uF decoupling capacitors and keep load capacitance below 50pF.
Recommended
Recommended Products Summary
Engineering reference data for SN74AHC3G99-Q1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SN74AHCT3G99-Q1 | SN74AHC3G99 | SN74LV3T99-Q1 |
|---|---|---|---|---|
| Package | 20-pin TSSOP (PW) | 20-pin TSSOP (PW) - same | 20-pin TSSOP (PW) - same | 20-pin TSSOP (PW) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Supply Voltage Range | 2V to 5.5V | 4.5V to 5.5V | 2V to 5.5V | 1.8V to 5.5V |
| Input Type | Schmitt-Trigger | Schmitt-Trigger | Schmitt-Trigger | Schmitt-Trigger |
| Logic Function | Y = (A • /C + B • C) ⊕ D | Y = (A • /C + B • C) ⊕ D | Y = (A • /C + B • C) ⊕ D | Y = (A • /C + B • C) ⊕ D |
| Propagation Delay (typ) | 7.5ns at 5V | 7.5ns at 5V | 7.5ns at 5V | [DATA_NEEDED] |
| AEC-Q100 Qualified | Yes | Yes | No | Yes |
| Output Load Capacitance | 50pF max | 50pF max | 50pF max | [DATA_NEEDED] |
Key Differentiators
- Automotive-grade AEC-Q100 qualification (vs SN74AHC3G99)
- Wide supply voltage range (2V to 5.5V) (vs SN74AHCT3G99-Q1)
- Schmitt-trigger inputs on all pins (vs SN74AHC9541-Q1)
Design Notes
Place a 0.1uF ceramic decoupling capacitor as close as possible to the VCC pin (pin 20) and GND pin (pin 16) to minimize power supply noise. For optimal performance, use a 1uF capacitor in parallel for lower frequencies. Ensure the ground plane is continuous under the device to reduce inductance and improve noise immunity.
Do not exceed the maximum output load capacitance of 50pF while meeting all datasheet specifications. Larger loads can be driven but may degrade propagation delay and output rise/fall times. Also, ensure all unused inputs are tied to a defined logic level (VCC or GND) to prevent floating inputs and excessive quiescent current.
The SN74AHC3G99-Q1 is a low-power CMOS device, so thermal management is generally not critical. However, in high-temperature automotive environments (up to 125°C), ensure adequate PCB copper area for heat dissipation. The 20-pin TSSOP package has a moderate thermal resistance; keep the ambient temperature within the specified operating range to avoid thermal stress.
Compliance Information
AEC-Q100 qualified per TI product page. RoHS compliant per TI datasheet.
