74HC2G17GW - Dual Non-Inverting Schmitt Trigger, 6-TSSOP | Nexperia
N.º de pieza: 74HC2G17GW ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $0.42 | $0,42 |
| 10 | $0.36 | $3,60 |
| 100 | $0.27 | $27,00 |
| 500 | $0.22 | $110,00 |
| 1.000 | $0.18 | $180,00 |
| 3.000 | $0.15 | $450,00 |
74HC2G17GW Descripción general
A Schmitt trigger is a comparator-style input stage with two distinct switching thresholds - a higher threshold (VT+) for the rising edge and a lower threshold (VT-) for the falling edge. The hysteresis between these thresholds (typically 1.0 V at 5 V VCC for the 74HC2G17) rejects noise, ringing, and slow edges, producing clean digital transitions where a standard CMOS gate would oscillate. Within the broader taxonomy, this device is a logic buffer - a sub-category of interface ICs that sits between drivers and receivers, all of which fall under the umbrella of standard logic ICs and ultimately digital semiconductors.
Key features include CMOS Schmitt-trigger inputs with input hysteresis, push-pull complementary outputs capable of sourcing and sinking ±5.2 mA, a maximum quiescent current in the microamp range, and ESD protection on all inputs. Inputs include clamp diodes that enable the use of current-limiting series resistors when interfacing to voltages above VCC, simplifying mixed-voltage designs. The device is specified over the -40 °C to +125 °C automotive/industrial temperature range.
The 74HC2G17GW uses a high-speed CMOS Si-gate process that delivers TTL-compatible logic levels on the HC version and true TTL levels on the HCT variant (74HCT2G17GW). The push-pull output stage eliminates the need for external pull-up resistors and avoids the static power dissipation of open-drain alternatives. With two independent buffers in a 6-pin package, the part is a compact building block for signal conditioning, line receivers, and oscillator circuits.
Typical applications include debouncing mechanical switches and push-buttons, conditioning slow analog signals before they reach a microcontroller, square-wave relaxation oscillators using an RC network, and rising-edge/pulse shaping in industrial control and automotive body electronics. The wide supply range and TTL-compatible thresholds make it a flexible interface between legacy 5 V logic and modern 3.3 V microcontrollers.
When designing with this device, place a 0.1 µF decoupling capacitor as close as possible to the VCC pin and ensure that input rise/fall times remain slow enough that the Schmitt hysteresis is meaningfully larger than the input noise. Inputs that exceed VCC by more than one diode drop (~0.7 V) must be current-limited to within the absolute maximum rating.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single reference for footprint-compatible parts and selection trade-offs.
Alternativas directas para 74HC2G17GW — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
74HCT2G17GW,125
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
74HC2G17GW,125
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
74HC2G17GW-G
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
SN74LVC2G17DCKR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MC74HC2G17
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
74HC2G17GW-Q100
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
74HC2G17GW Valores máximos y características eléctricas
| Logic Type | Schmitt Trigger Buffer |
| Number of Elements | 2 |
| Number of Bits per Element | 1 |
| Tipo de salida | Push-Pull |
| Polarity | Non-Inverting |
| Supply Voltage (VCC) | 2.0 V to 6.0 V |
| Logic Switching Levels | CMOS |
| Output Drive Capability | ±5.2 mA |
| Maximum Frequency (fmax) | 36 MHz |
| Number of Bits | 2 |
| Power Dissipation Considerations | Low |
| Operating Temperature (Tamb) | -40 °C to +125 °C |
| Input Clamp Diodes | Yes |
| Encapsulado | TSSOP-6 (SOT363 / SC-88) |
| Tipo de montaje | Surface Mount |
| Nivel MSL | 1 (per JEDEC J-STD-020) |
Configuración de pines de 74HC2G17GW
| Pin 1 | 1A — Data input, channel 1 (Schmitt trigger) |
| Pin 2 | GND — Ground (0 V) |
| Pin 3 | 2A — Data input, channel 2 (Schmitt trigger) |
| Pin 4 | 2Y — Data output, channel 2 (push-pull) |
| Pin 5 | VCC — Supply voltage (2.0 V to 6.0 V) |
| Pin 6 | 1Y — Data output, channel 1 (push-pull) |
Aplicaciones típicas
74HC2G17GW es adecuado para 6 aplicacións: Mechanical Switch Debouncing, Signal Conditioning for Slow Analog Edges, Relaxation Oscillator / Square-Wave Generator, Industrial Control Line Receiver, Automotive Body Electronics, Mixed-Voltage Level Translation.
Mechanical Switch Debouncing
The 74HC2G17GW's Schmitt-trigger inputs with around 1.0 V hysteresis at 5 V VCC make it ideal for debouncing mechanical switches, push-buttons, and rotary encoders. Placing a 10 kΩ pull-up and the 74HC2G17GW between the switch and a microcontroller GPIO produces a clean logic edge free of contact bounce, with the device's 36 MHz maximum frequency easily handling millisecond-scale debounce events.
Recomendado
Signal Conditioning for Slow Analog Edges
Slowly rising signals from sensors, RC networks, or comparator outputs often violate the maximum rise-time spec of standard CMOS gates, causing metastability and oscillation. The 74HC2G17GW converts these slow edges into sharply defined transitions with around 10 ns propagation delay at 5 V VCC, and its 2.0 V to 6.0 V supply range allows direct interfacing with both 3.3 V microcontrollers and 5 V analog front-ends.
Recomendado
Relaxation Oscillator / Square-Wave Generator
A single 74HC2G17GW channel forms a compact relaxation oscillator by adding an external resistor from output to input and a capacitor from input to ground, generating a square wave at approximately f = 1 / (0.69 × R × C). The Schmitt-trigger hysteresis keeps the output transitions clean and symmetric even with component tolerances, and the second buffer can be used as a buffered output to drive a load without disturbing the timing network.
Recomendado
Industrial Control Line Receiver
In noisy industrial environments, long cable runs pick up EMI that easily confuses standard CMOS receivers. The 74HC2G17GW's Schmitt-trigger inputs reject this noise with typical 1.0 V hysteresis at 5 V VCC, while its ±5.2 mA push-pull drive delivers a robust 5 V CMOS signal to downstream logic or optocouplers across -40 °C to +125 °C industrial temperature range.
Recomendado
Automotive Body Electronics
Automotive body controllers routinely debounce door switches, seat-occupancy sensors, and HVAC controls where the 74HC2G17GW-Q100 AEC-Q100 qualified variant provides the same TSSOP-6 footprint and 2.0 V to 6.0 V supply tolerance needed for 12 V battery environments. The integrated input clamp diodes allow current-limited sensing of voltages above VCC, supporting direct wiring to automotive load drivers.
Recomendado
Mixed-Voltage Level Translation
The 74HC2G17GW's 2.0 V to 6.0 V supply range and input clamp diodes enable simple unidirectional level translation between 5 V and 3.3 V logic domains by running the device at the lower supply and current-limiting the higher-voltage input through a series resistor. While dedicated level shifters like the TXS0108E are preferred for high-speed buses, the 74HC2G17GW is a low-cost, low-pin-count solution for control signals.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para 74HC2G17GW — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | 74HCT2G17GW,125 | 74HC2G17GW,125 | 74HC2G17GW-G | SN74LVC2G17DCKR | MC74HC2G17 |
|---|---|---|---|---|---|---|
| Brand | Nexperia | Nexperia | Nexperia | Nexperia | Texas Instruments | onsemi |
| Package | TSSOP-6 (SOT363 / SC-88) | TSSOP-6 (SOT363) - same | TSSOP-6 (SOT363) - same | TSSOP-6 (SOT363) - same | TSSOP-6 (DCK) - same footprint | TSSOP-6 - same |
| Supply Voltage (VCC) | 2.0 V to 6.0 V | 4.5 V to 5.5 V | 2.0 V to 6.0 V | 2.0 V to 6.0 V | 1.65 V to 5.5 V | 2.0 V to 6.0 V |
| Logic Switching Levels | CMOS | TTL | CMOS | CMOS | LVTTL | CMOS |
| Output Drive Capability | ±5.2 mA | ±4 mA | ±5.2 mA | ±5.2 mA | ±24 mA | ±5.2 mA |
| Maximum Frequency (fmax) | 36 MHz | 36 MHz | 36 MHz | 36 MHz | 150 MHz | 36 MHz |
| 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 | -55 °C to +125 °C |
| Automotive Grade (AEC-Q100) | No | No | No | No | No | No |
Diferenciadores clave
- Wide 2.0 V to 6.0 V supply range covers both 3.3 V and 5 V designs in a single part (frente a 74HCT2G17GW,125)
- Schmitt-trigger hysteresis around 1.0 V at 5 V VCC rejects noise on slow or ringing edges (frente a MC74ACT32DR2G)
- Compact 6-pin TSSOP integrates two independent buffers with clamp-diode protection (frente a SN74LVC2G17DCKR)
Notas de diseño
Place a 0.1 µF ceramic decoupling capacitor (X7R or X5R) within 2 mm of the VCC pin (pin 5) to suppress supply transients caused by simultaneous push-pull output switching. For designs with two buffers toggling at high speed, adding a parallel 1 nF or 10 nF capacitor can further reduce high-frequency supply ringing, but the 0.1 µF must remain closest to the device.
Keep the GND pin (pin 2) connection short and direct to the ground plane, ideally with a via placed immediately adjacent to the pin pad. The two input pins (1A, 2A) carry high-impedance analog-like signals; route them away from fast-switching outputs and clock traces to avoid capacitive coupling that could reduce effective hysteresis.
Inputs that exceed VCC by more than ~0.7 V forward-bias the integrated clamp diodes and must be current-limited with an external series resistor to stay within the absolute maximum input current rating per pin. Do not assume unlimited over-voltage tolerance - calculate R ≥ (VIN_max - VCC) / I_input_max and verify the resulting rise-time remains compatible with downstream logic.
Información de cumplimiento
RoHS compliant per Nexperia product page. The 74HC2G17GW-Q100 variant is the AEC-Q100 qualified version for automotive designs.
