SN74LVC1G17DBVR - Single Schmitt-Trigger Buffer 5.5V | TI
MPN: SN74LVC1G17DBVR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.29 | $0.29 |
| 10 | $0.26 | $2.60 |
| 100 | $0.19 | $19.00 |
| 500 | $0.14 | $70.00 |
| 1,000 | $0.11 | $110.00 |
| 3,000 | $0.09 | $270.00 |
Drop-in alternatives for SN74LVC1G17DBVR 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:
SN74LVC1G17QDBVRQ1
β Drop-Inπ Reference alternative (not in catalog)
SN74LVC1G34DBVR
β‘ Same Packageπ Reference alternative (not in catalog)
SN74AUP1G17DBVR
β Drop-Inπ Reference alternative (not in catalog)
74LVC1G17GV,125
β Drop-Inπ Reference alternative (not in catalog)
MC74VHC1GT17DTR2G
β Drop-Inπ Reference alternative (not in catalog)
SN74LVC1G17DBVR Maximum Ratings & Electrical Characteristics
| Logic Function | Buffer, Non-Inverting (Y = A) |
| Input Type | Schmitt-Trigger |
| Supply Voltage Range | 1.65 V to 5.5 V |
| Output Type | Push-Pull |
| Output Current | up to 32 mA at 3.3 V |
| Typical Hysteresis | 0.4 V at 3.3 V |
| Technology | CMOS (LVC family) |
| Ioff Partial Power Down | Yes |
| Package | SOT-23-5 (DBV) |
| Mounting Type | Surface Mount |
| Number of Elements | 1 |
| Bits per Element | 1 |
| MSL Level | 1-260C-UNLIM |
| RoHS Status | Compliant |
| Operating Temperature | [DATA_NEEDED: operating temperature range] |
| Propagation Delay | [DATA_NEEDED: typical propagation delay] |
SN74LVC1G17DBVR Pin Configuration
| Pin 1 | A β Data input (Schmitt-trigger) |
| Pin 2 | GND β Ground |
| Pin 3 | Y β Buffer output (Y = A) |
| Pin 4 | NC β No connect |
| Pin 5 | VCC β Power supply, 1.65 V to 5.5 V |
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
SN74LVC1G17DBVR is suitable for 6 applications: Sensor Signal Conditioning, Switch Debouncing, Clock Buffering and Distribution, Logic-Family Interfacing and Level Shifting, RC Oscillator and Relaxation Oscillator Circuits, Industrial and Automotive Input Protection.
Sensor Signal Conditioning
The SN74LVC1G17DBVR conditions slow or noisy analog-like sensor outputs into clean digital logic levels. Its Schmitt-trigger input with 0.4 V typical hysteresis at 3.3 V prevents multiple output transitions when a sensor signal rises slowly through the threshold region. Placed directly at the MCU input pin, the buffer squares the edge and isolates the microcontroller from the sensor source impedance. The 1.65-5.5 V supply range allows matching the buffer to either 3.3-V or 5-V sensor domains without level-translation circuitry.
Recommended
Switch Debouncing
Mechanical switch contacts bounce for milliseconds after actuation, producing multiple threshold crossings that a standard logic input would register as several pulses. The SN74LVC1G17DBVR Schmitt-trigger input rejects this chatter with its dual-threshold hysteresis, delivering a single clean edge per actuation. Combined with a simple RC filter, the buffer handles the analog settling phase while its push-pull output, rated up to 32 mA at 3.3 V, drives downstream logic or even a small LED indicator directly. Its SOT-23-5 package keeps the debounce function to a minimal PCB footprint.
Recommended
Clock Buffering and Distribution
The SN74LVC1G17DBVR buffers clock signals to improve fan-out and restore edge quality after long PCB traces. Its CMOS LVC architecture provides fast propagation with low static power, and the push-pull output drives up to 32 mA at 3.3 V, sufficient to feed multiple logic loads. Placing the buffer close to the clock source minimizes trace inductance and ringing; the Schmitt input additionally tolerates degraded clock edges from RC-oscillator or crystal-module sources. Ioff support allows clock gating in partial-power-down system states without backflow damage.
Recommended
Logic-Family Interfacing and Level Shifting
When mixing 5-V and 3.3-V logic domains, the SN74LVC1G17DBVR bridges the gap: operated at 5 V it accepts and cleans up 3.3-V-level signals, and operated at 3.3 V its Schmitt thresholds provide defined behavior for marginal transitions between families such as HCT and LVC outputs. The wide 1.65-5.5 V range lets one design cover multiple rail voltages. Signal direction is fixed (input to output), so no direction-control pins are needed, simplifying the interface. Hysteresis of about 0.4 V at 3.3 V suppresses ringing caused by ground bounce between domains.
Recommended
RC Oscillator and Relaxation Oscillator Circuits
With an RC network from output to input, the SN74LVC1G17DBVR forms a simple relaxation oscillator; the Schmitt hysteresis sets the switching window so oscillation frequency depends mainly on the RC time constant, approximately f = 1/(RC * ln terms of thresholds). Hysteresis of 0.4 V at 3.3 V gives stable, jitter-resistant oscillation without a dedicated oscillator IC, useful for clocking low-speed sequencers, blinkers, and watchdog timers. The push-pull output squares the waveform for direct logic-clock use, and the 1.65-5.5 V range allows frequency scaling with supply.
Recommended
Industrial and Automotive Input Protection
In industrial and automotive panels, field-wired inputs arrive with slow edges, ringing, and noise. The SN74LVC1G17DBVR squares these signals before they reach a controller; for automotive temperatures the pin-compatible AEC-Q100 qualified SN74LVC1G17QDBVRQ1 should be used instead. Typical circuits pair the buffer with a series resistor and clamp for overvoltage tolerance, with the Schmitt input absorbing the degraded waveform. The 32 mA output at 3.3 V directly drives optocoupler LEDs or PLC logic inputs, consolidating conditioning and drive into one SOT-23-5 device.
Recommended
Recommended Products Summary
Engineering reference data for SN74LVC1G17DBVR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SN74LVC1G17QDBVRQ1 | 74LVC1G17GV,125 | MC74VHC1GT17DTR2G |
|---|---|---|---|---|
| Package | SOT-23-5 (DBV) | SOT-23-5 - same | SOT-23-5 - same | SOT-23-5 - same |
| Brand | Texas Instruments | Texas Instruments | Nexperia | onsemi |
| Logic Function | Buffer Y = A, Schmitt input | Buffer Y = A, Schmitt input | Buffer Y = A, Schmitt input | Buffer Y = A, Schmitt input |
| Supply Voltage Range | 1.65 V to 5.5 V | 1.65 V to 5.5 V | 1.2 V to 5.5 V | 2.0 V to 5.5 V |
| Automotive Grade | No | Yes (AEC-Q100) | No | No |
| Typical Hysteresis | ~0.4 V at 3.3 V | ~0.4 V at 3.3 V | [DATA_NEEDED] | [DATA_NEEDED] |
| Schmitt-Trigger Input | Yes | Yes | Yes | Yes |
| RoHS Compliance | Compliant | Compliant | Compliant | Compliant |
Key Differentiators
- Schmitt-trigger hysteresis for noisy and slow signals (vs SN74LVC1G34DBVR)
- Automotive-qualified drop-in available (vs SN74LVC1G17QDBVRQ1)
- Wider low-voltage operation than onsemi equivalent (vs MC74VHC1GT17DTR2G)
Design Notes
For high-speed clock buffering, place the SN74LVC1G17DBVR within a few centimeters of the signal source to minimize trace inductance and reflections. Keep the input trace short; long unterminated traces feeding a Schmitt input can still pick up noise between the two thresholds (0.4 V apart at 3.3 V). Add a 0.1 uF decoupling capacitor within 2 mm of the VCC pin.
Never let the input signal exceed VCC - the LVC input is not truly fail-safe against input-over-supply conditions in all states, and exceeding ratings risks latch-up. Also note the minimum supply: at 1.65 V the hysteresis window shrinks proportionally, so slow-signal conditioning performance degrades at 1.8 V rails. Do not substitute SN74LVC1G34 (no hysteresis) in slow-signal circuits.
The SOT-23-5 (DBV) footprint is industry-standard and shared by the Q1 automotive variant, Nexperia, and onsemi equivalents, so allocate for second-sourcing from day one. Unused board space under the device can host the RC network for debounce or oscillator applications. If the output drives an LED or cable, verify total drive stays within the 32 mA rating at 3.3 V.
Compliance Information
RoHS compliant and MSL 1-260C-UNLIM per PartGenie distributor compliance data. AEC-Q100 qualified version available as SN74LVC1G17QDBVRQ1.