74LVC1G27GW-Q100H - Single 3-Input NOR Gate, Automotive | Nexperia
MPN: 74LVC1G27GW-Q100H ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.26 | $0.26 |
| 10 | $0.21 | $2.10 |
| 100 | $0.15 | $15.00 |
| 500 | $0.12 | $60.00 |
| 1,000 | $0.1 | $100.00 |
| 3,000 | $0.085 | $255.00 |
74LVC1G27GW-Q100H Overview
A NOR gate is a fundamental digital logic gate that produces a logic-high output only when ALL of its inputs are logic-low; if any input is high, the output is forced low. The 3-input variant integrates three parallel OR inputs followed by inversion, useful for compact combinational logic, multi-input fault detection, and qualification functions. NOR gates sit within the broader logic family hierarchy as: NOR gate -> OR-derived logic -> combinational logic -> CMOS logic -> integrated circuit.
Key features include wide 1.65 V to 5.5 V supply operation, 5 V tolerant inputs that allow direct interfacing with 3.3 V or 5 V devices, Schmitt-trigger input action for noise immunity with slow edges, and I_OFF circuitry that enables partial power-down by preventing damaging backflow current when the device is unpowered. Typical quiescent current is 4 uA, and the device supports output voltages from 0.95 V to VCC - 0.5 V (3.4 V at 5 V supply).
The 74LVC1G27GW-Q100H uses Nexperia's LVC (Low-Voltage CMOS) technology, optimized for low power and high speed at low voltages. The Schmitt-trigger inputs provide hysteresis that prevents oscillation on slow input transitions, which is essential in industrial and automotive environments with long PCB traces. The I_OFF feature makes the part safe for hot-insert and bus-isolated applications where partial sections are powered down to save energy.
Typical applications include automotive body and chassis electronics, industrial sensor signal conditioning, level translation between 3.3 V and 5 V logic domains, handheld battery-powered devices, and embedded computing boards requiring a single compact NOR gate rather than a multi-channel package. The -40 C to +125 C operating range supports under-hood and outdoor deployments.
When designing with this part, observe 5 V tolerant input thresholds and derate output drive at low VCC: at 1.8 V supply the 32 mA rating drops significantly. Always check the I_OFF specification if the device sits on a live bus while locally unpowered. The SC-88 (SOT363) footprint is the same as the SC-70 family and is footprint-compatible with industry-standard 6-pin micro-logic packages.
This page synthesizes distributor pricing, automotive-grade alternatives, and PCB design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for 74LVC1G27GW-Q100H — 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:
74LVC1G27GW,125
✅ Drop-In📋 Reference alternative (not in catalog)
74LVC1G27GW-Q100
✅ Drop-In📋 Reference alternative (not in catalog)
74AHC1G27GW,125
✅ Drop-In📋 Reference alternative (not in catalog)
74LV1T27GW-Q100H
✅ Drop-In📋 Reference alternative (not in catalog)
74LVC1G27GW-Q100H Maximum Ratings & Electrical Characteristics
| Logic Function | 3-input NOR gate |
| Number of Channels | 1 |
| Logic Family | 74LVC (Low-Voltage CMOS) |
| Supply Voltage (VCC) | 1.65 V to 5.5 V |
| Output Drive Current | 32 mA (sink and source) |
| Propagation Delay (tpd) | 4.5 ns typ at 5 V, 50 pF |
| Quiescent Current | 4 uA typ |
| Input Voltage Range | 0 V to 5.5 V (5 V tolerant) |
| Output Voltage Range | 0.95 V to 3.4 V (at VCC = 5 V) |
| Input Type | Schmitt-trigger |
| Partial Power-Down Support | Yes (I_OFF circuitry) |
| Operating Temperature | -40 C to +125 C |
| Package | SOT363 (SC-88), 6-pin |
| Mounting Type | Surface Mount |
| Automotive Qualification | AEC-Q100 (Q100 / H suffix) |
| RoHS Status | Compliant |
| MSL Level | 1 (per JEDEC J-STD-020) |
74LVC1G27GW-Q100H Pin Configuration
| Pin 1 | 1A — Input A (NOR gate) |
| Pin 2 | GND — Ground (0 V reference) |
| Pin 3 | 1B — Input B (NOR gate) |
| Pin 4 | 1C — Input C (NOR gate) |
| Pin 5 | 1Y — Output Y (NOR gate result) |
| Pin 6 | VCC — Supply voltage (1.65 V to 5.5 V) |
Typical Applications
74LVC1G27GW-Q100H is suitable for 6 applications: Automotive Body Electronics, Industrial Sensor Signal Conditioning, Mixed-Voltage Level Translation, Battery-Powered Portable Devices, Embedded Computing Add-On Logic, Fault-Tree and Safety Logic.
Automotive Body Electronics
The 74LVC1G27GW-Q100H is widely used in automotive body control modules, BCMs, and gateway ECUs where a single compact NOR gate replaces discrete transistor logic to save PCB area. The AEC-Q100 qualification, -40 C to +125 C operating range, and 5 V tolerant inputs make it ideal for body-domain networks that mix 3.3 V microcontrollers with 5 V sensor rails. Its 4.5 ns propagation delay at 5 V is fast enough for door-module multiplexing and lighting control, while the 32 mA drive can directly switch small relay coils and LED strings without a buffer. The I_OFF partial-power-down feature is critical in always-on body networks where sub-modules are selectively unpowered during key-off to meet quiescent-current targets.
Recommended
Industrial Sensor Signal Conditioning
In industrial PLCs and sensor-interface boards, the 74LVC1G27GW-Q100H conditions multi-input sensor signals such as three-wire proximity switches, multi-channel safety gates, or fault-tree combinational logic. The Schmitt-trigger inputs reject the slow edges and ringing typical of long shielded cables in factory environments, preventing oscillation that would otherwise cause false triggers downstream. Operating from 1.65 V to 5.5 V lets the same part work in 3.3 V and 5 V PLC backplanes, while the 32 mA drive can directly feed a 24 V opto-isolator LED through a series resistor. The wide temperature range supports cabinets mounted near motors and heaters without derating.
Recommended
Mixed-Voltage Level Translation
The 74LVC1G27GW-Q100H excels at 3.3 V to 5 V bidirectional-style translation in mixed-rail systems, where a 5 V microcontroller must communicate with a 1.8 V or 3.3 V peripheral. Inputs accept up to 5.5 V regardless of VCC, so a 5 V signal can be fed into a device running on a 1.8 V rail safely. The Schmitt-trigger action with hysteresis around 0.8 V makes it tolerant of slow optocoupler or line-driver edges, which is common when crossing isolation barriers. Combined with the I_OFF feature, the part is safe in hot-swap backplane designs where a daughter-card may be unpowered while inserted into a live system.
Recommended
Battery-Powered Portable Devices
The 4 uA quiescent current of the 74LVC1G27GW-Q100H makes it acceptable for handheld and battery-powered equipment where standby power is a hard constraint, such as medical wearables, asset trackers, and field-instrumentation probes. The 1.65 V minimum supply allows direct operation from a single lithium coin cell or two AA cells in series, while the SOT363 package occupies less than 10 mm^2 of board area - critical for miniaturized form factors. The 5 V tolerant inputs accept USB-VBUS levels for charging-state logic without external dividers, and the partial-power-down I_OFF ensures no leakage when the host MCU enters deep sleep.
Recommended
Embedded Computing Add-On Logic
On Raspberry Pi, BeagleBone, and similar SBC carrier boards, the 74LVC1G27GW-Q100H is often added for glue logic that the SoC cannot provide - for example, combining three GPIO lines into a single interrupt-request NOR function, decoding a 3-bit chip-select pattern, or generating a watchdog-qualification signal. The 5 V tolerant inputs accept 5 V peripheral signals on a 3.3 V SBC rail, while the 32 mA drive can sink indicator LEDs directly. The SOT363 footprint is friendly to hand-soldering with a fine tip, useful for prototype and hobby carrier boards where a single discrete gate is preferred over reconfiguring the SoC firmware.
Recommended
Fault-Tree and Safety Logic
Safety-critical subsystems often use NOR gates as building blocks for fault-tree combinational logic, and the 74LVC1G27GW-Q100H fits this role in machinery safety relays, elevator door interlocks, and emergency-stop debouncers. A 3-input NOR conveniently checks three independent fault sensors (over-temperature, over-pressure, door-open) and asserts a single shutdown line if any fault is active. The AEC-Q100 qualification and -40 C to +125 C range extend this use to automotive ADAS sensor-fusion ECUs and industrial safety PLCs. The Schmitt-trigger hysteresis prevents nuisance tripping from sensor contact bounce, while the I_OFF feature lets the safety gate remain safely passive when the system is in maintenance mode.
Recommended
Recommended Products Summary
Engineering reference data for 74LVC1G27GW-Q100H — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 74LVC1G27GW,125 | 74LVC1G27GW-Q100 | 74AHC1G27GW,125 | 74LV1T27GW-Q100H |
|---|---|---|---|---|---|
| Package | SOT363 (SC-88) | SOT363 (SC-88) - same | SOT363 (SC-88) - same | SOT363 (SC-88) - same | SOT363 (SC-88) - same |
| Brand | Nexperia | Nexperia | Nexperia | Nexperia | Nexperia |
| Logic Function | 3-input NOR | 3-input NOR | 3-input NOR | 3-input NOR | 3-input NOR |
| Supply Voltage | 1.65 V to 5.5 V | 1.65 V to 5.5 V | 1.65 V to 5.5 V | 2.0 V to 5.5 V | 1.6 V to 5.5 V |
| Output Drive | 32 mA | 32 mA | 32 mA | 8 mA | 8 mA |
| Propagation Delay (typ) | 4.5 ns @ 5 V | 4.5 ns @ 5 V | 4.5 ns @ 5 V | 5-6 ns @ 5 V | 6 ns @ 5 V |
| Automotive Grade | AEC-Q100 (Q100/H) | Commercial (no AEC-Q100) | AEC-Q100 | Commercial (no AEC-Q100) | AEC-Q100 (Q100/H) |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C |
Key Differentiators
- AEC-Q100 automotive qualification with H release-code identifier (vs 74LVC1G27GW,125)
- Wide 1.65 V to 5.5 V supply range with 5 V tolerant inputs (vs 74AHC1G27GW,125)
- Strong 32 mA output drive (vs 74LV1T27GW-Q100H)
Design Notes
Place a 100 nF X7R decoupling capacitor as close as possible to the VCC pin (pin 6) of the SOT363 footprint, with the ground return via directly to pin 2 (GND). The SOT363 has a small thermal pad on the underside that may be soldered to a copper pour for thermal relief when switching the 32 mA output continuously, although most applications do not require it. Keep input traces short and avoid routing near switching nodes to preserve Schmitt-trigger noise immunity.
Do not drive the output beyond VCC + 0.5 V or below -0.5 V; the I_OFF spec protects against partial-power-down backflow but does not tolerate continuous over-voltage on the output. Do not assume 32 mA drive at low VCC - the 32 mA rating is specified at 5 V supply, and the actual drive drops significantly at 1.8 V operation. Also note that the SOT363 (SC-88) footprint differs from the SOT-23-6 footprint used by TI's SN74LVC1G27DCKR; they are NOT pin-compatible and require different PCB land patterns.
The Schmitt-trigger inputs provide approximately 0.8 V of hysteresis around the switching threshold, which makes the part tolerant of input rise and fall times up to several hundred nanoseconds without oscillation. For high-speed applications above 10 MHz, however, keep input edge rates below 10 ns/V to avoid dynamic ICC increases and ground-bounce noise. When using the gate for level translation from 5 V to 1.8 V, ensure the 1.8 V VCC rail is stable before applying the 5 V input signal, otherwise the input-protection diodes may briefly conduct and disturb the lower rail.
Compliance Information
AEC-Q100 qualified per the Q100 / H suffix. RoHS compliant per JLCPCB listing. Halogen-free and lead-free per Nexperia automotive product family conventions.
