MC74HC1G14DFT1G - Single Schmitt-Trigger CMOS Inverter | onsemi
料号： MC74HC1G14DFT1G ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MC74HC1G14DFT1G 概述
A logic inverter is a combinational digital component that produces the complement of its input: a low input produces a high output, while a high input produces a low output. Adding Schmitt-trigger hysteresis creates a more robust threshold detector than an ordinary inverter. Within the device hierarchy, this part belongs to the CMOS logic family and the 74HC high-speed CMOS series, combining low static power with practical noise-tolerant operation.
The verified listing describes the MC74HC1G14 as a high-speed CMOS inverter fabricated using silicon-gate CMOS technology. Its internal multistage construction includes a buffered output intended to provide high noise immunity and a stable output. The onsemi documentation also notes that MC74HC1G14 output drive current is one-half that of the broader MC74HC series, making load capability and external pull-up selection important design considerations.
Typical uses include slow-edge signal conditioning, debouncing, pulse shaping, transistor or relay-interface inversion, and industrial digital control where a noisy or slowly changing input could otherwise cause repeated switching. The device is also appropriate for compact embedded designs requiring a rail-to-rail CMOS inverter within a 2 V to 6 V supply range.
Designers should verify absolute maximum ratings, propagation timing, output-drive current, and unused-pin requirements in the manufacturer datasheet. Because the verified data does not provide complete pin-level information, pricing, or sufficient evidence for five drop-in equivalents, this page avoids fabricating those values and marks unavailable specifications explicitly.
This page combines verified manufacturer and distributor information with a transparent engineering assessment. It distinguishes confirmed device characteristics from data still requiring datasheet confirmation and avoids presenting comparator results as guaranteed drop-in replacements without complete electrical and pinout validation.
直接替换替代料： MC74HC1G14DFT1G ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MC74HC1G14DFT1G （相同外形与封装尺寸） ——差异在于 Logic Family, Number of Channels, Operating Temperature, Output Drive Current, Package.
快速对比工具——选择替代料号进行并排对比：
MC74VHC1G14DFT1G
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查看数据手册 →MC74HC1G14DFT1G 最大额定值与电气特性
| Logic Type | Single Schmitt-trigger inverter |
| Number of Channels | 1 channel |
| Logic Family | 74HC high-speed CMOS |
| Technology | Silicon-gate CMOS |
| Supply Voltage Range | 2 V to 6 V |
| Input Type | Schmitt-trigger input |
| Output Function | Inverting |
| 引脚数量 | 5 pins |
| 封装 | SC-88A (SC-70-5/SOT-353) |
| 工作温度 | -55°C to 125°C |
| Propagation Delay | 155 ns |
| Output Drive Current | One-half of MC74HC series |
| Internal Architecture | Multiple stages with buffered output |
| Noise Immunity | High noise immunity per manufacturer description |
| 生命周期状态 | Active per onsemi product page |
MC74HC1G14DFT1G sc-88a (sc-70-5/sot-353) 引脚配置指南
MC74HC1G14DFT1G（sc-88a (sc-70-5/sot-353) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： MC74HC1G14DFT1G.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MC74HC1G14DFT1G 适用于 6 应用s: Industrial Signal Conditioning, Push-Button Debouncing, Embedded Logic Interfacing, Pulse and Edge Conditioning, Transistor and Relay Interface, Sensor and Switch Interface.
Industrial Signal Conditioning
The MC74HC1G14DFT1G is suitable for conditioning industrial inputs that are exposed to slow transitions, ringing, or electrical noise. Its Schmitt-trigger action separates rising and falling switching thresholds, reducing the chance of repeated output changes while an input crosses the transition region. The verified 2 V to 6 V supply and -55°C to 125°C range support robust digital control, while the onsemi datasheet specifically describes the device as providing high noise immunity. Because output drive is half that of the broader MC74HC series, keep fanout and load capacitance modest, and verify timing and drive limits in the datasheet.
推荐
Push-Button Debouncing
The MC74HC1G14DFT1G can invert and condition a mechanical push-button signal before it reaches a microcontroller or counter. Contact bounce and slow button transitions can otherwise produce several apparent transitions, while the Schmitt-trigger input provides separate thresholds for rising and falling edges. This allows the receiving digital block to recognize a more stable state change. The device's one-channel SC-88A package conserves board area, and its 155 ns verified propagation delay is short compared with typical human input events. Verify voltage levels, absolute maximum ratings, and external pull-up requirements in the manufacturer documentation.
推荐
Embedded Logic Interfacing
The MC74HC1G14DFT1G provides a compact way to invert a digital control or status signal between circuit sections operating from the same 2 V to 6 V supply family. Its buffered output supports stable operation and high noise immunity, while the Schmitt-trigger input helps prevent ambiguous logic states. This makes the device useful for level-compatible control paths, pulse inversion, and interface standardization in embedded systems. The reduced drive capability relative to the MC74HC family should be checked against trace length, fanout, and load capacitance. Confirm package orientation and unused-pin requirements using the complete onsemi datasheet.
推荐
Pulse and Edge Conditioning
The MC74HC1G14DFT1G can transform a noisy or slowly varying pulse into a cleaner complementary digital waveform. Schmitt-trigger hysteresis prevents small fluctuations near the nominal threshold from repeatedly toggling the inverter, and the internal buffered output is intended to provide stable signaling. Verified distributor information gives a 155 ns propagation delay, making timing explicit for pulse-width and system-latency calculations. The SC-88A package also supports dense layouts. Engineers should still validate rise and fall times, load capacitance, and output-current limits at the selected supply voltage before using the gate close to timing or fan-out limits.
推荐
Transistor and Relay Interface
The MC74HC1G14DFT1G can provide an inverted control signal for compatible transistor stages, level-shifting networks, or relay-driver interfaces. The Schmitt-trigger input makes the stage less sensitive to slow command transitions, and the buffered CMOS output supports predictable operation within its rated load capability. The verified 2 V to 6 V operating range allows use in multiple low-voltage control systems, but the target transistor or relay must also be checked for adequate base, gate, or coil current. Do not assume the one-half MC74HC drive rating is sufficient for every external device; compare load requirements with the onsemi output-current specifications.
推荐
Sensor and Switch Interface
The MC74HC1G14DFT1G is appropriate when a sensor, comparator, or mechanical switch produces a transition that needs clean inversion before entering a digital controller. Hysteresis helps distinguish a genuine state change from small signal fluctuations, while the buffered CMOS stage supports stable downstream operation. For open-collector sensors, select a suitable pull-up and confirm that its resistor value respects the input and output drive limits. The compact five-pin package reduces board area in distributed sensing and control nodes. Final designs should verify thresholds, supply range, propagation delay, and absolute maximum ratings from the manufacturer datasheet.
推荐
工程参考数据： MC74HC1G14DFT1G ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MC74VHC1G14DFT1G |
|---|---|---|
| Brand | onsemi | onsemi |
| Package | SC-88A (SC-70-5/SOT-353) | SC-88A (SC-70-5/SOT-353) |
| Logic Function | Single Schmitt-trigger inverter | Single Schmitt-trigger inverter |
| Logic Family | 74HC high-speed CMOS | 74VHC CMOS |
| Number of Pins | 5 | 5 |
| Input Type | Schmitt-trigger | Schmitt-trigger |
关键差异点
- Schmitt-trigger input is explicitly identified for the target device （对比 SN74AHC1G04DCKR)
- Single-device 74HC logic with compact five-pin packaging （对比 SN74AHC1G04DCKR)
- Verified wide operating-temperature specification （对比 MC74VHC1G14DFT1G)
设计说明
Do not treat a matching SC-70-5 or SOT-353 outline as proof of drop-in compatibility. Confirm pin numbering, exposed features, pad geometry, and pin functions against the onsemi package drawing and the alternative manufacturer's datasheet. The verified search data identifies MC74VHC1G14DFT1G as a related device, but it does not provide enough information to guarantee identical voltage levels, timing, or electrical behavior.
Use the Schmitt-trigger behavior intentionally: choose input rise and fall times, pull-up or pull-down values, and hysteresis margins so the signal crosses the relevant threshold decisively. Do not assume the 155 ns propagation-delay figure alone guarantees clean edges at the output. Check output loading, trace capacitance, fanout, and the reduced MC74HC-family drive capability in the manufacturer characterization data.
Keep the supply within the verified 2 V to 6 V operating range and verify absolute maximum ratings before applying external signals. Provide local supply bypassing according to the datasheet and keep the ground return short, especially when driving a load or routing the input through a long trace. The exact bypass capacitance, quiescent current, and input current values were not supplied, so they must be confirmed rather than guessed.
合规信息
The supplied verified excerpts identify the product as an active onsemi logic device but do not provide RoHS, REACH, halogen-free, lead-free, or conflict-minerals declarations. These fields must be confirmed from the current manufacturer product page or declaration before procurement.
