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Product Overview
The SN74HC14APW from Texas Instruments is a hex Schmitt-trigger inverter IC housed in a 14-pin TSSOP package. It features six independent inverters with Schmitt-trigger inputs, providing hysteresis for noise immunity and clean output transitions. Operating from 2V to 6V, it is ideal for applications requiring signal conditioning, wave shaping, and noise filtering.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
2V to 6V |
| Input Voltage (VI) |
0V to VCC |
| Output Voltage (VO) |
0V to VCC |
| High-Level Output Current (IOH) |
-4 mA (at VCC=4.5V) |
| Low-Level Output Current (IOL) |
4 mA (at VCC=4.5V) |
| Propagation Delay (tpd) |
15 ns (typical at VCC=4.5V, CL=50pF) |
| Input Hysteresis (VT+ - VT-) |
0.4V to 1.2V (at VCC=4.5V) |
| Operating Temperature Range |
-40°C to +85°C |
| Package |
14-TSSOP |
Key Features
- Schmitt-trigger inputs for slow or noisy input signals
- Wide supply voltage range: 2V to 6V
- High noise immunity: typical hysteresis of 0.8V at 4.5V
- Low power consumption: ICC max 20 µA
- Compatible with TTL and CMOS logic levels
- ESD protection exceeds 2000V (HBM)
Target Applications
- Signal conditioning in 5G base stations (e.g., clock signal cleanup)
- Debouncing switches in automotive dashboards
- Wave shaping for sensor interfaces in industrial control
- Oscillator circuits for microcontrollers
- Noise filtering in communication modules
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產品概述
SN74HC14APW 是德州儀器(TI)生產的六路施密特觸發反相器 IC,採用 14 引腳 TSSOP 封裝。它包含六個獨立的施密特觸發反相器,輸入端具有滯回特性,可提供噪聲抑制和乾淨的輸出轉換。工作電壓範圍為 2V 至 6V,適用於信號調理、波形整形和噪聲濾波等應用。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
2V 至 6V |
| 輸入電壓 (VI) |
0V 至 VCC |
| 輸出電壓 (VO) |
0V 至 VCC |
| 高電平輸出電流 (IOH) |
-4 mA (VCC=4.5V 時) |
| 低電平輸出電流 (IOL) |
4 mA (VCC=4.5V 時) |
| 傳播延遲 (tpd) |
15 ns (典型值,VCC=4.5V, CL=50pF) |
| 輸入滯回電壓 (VT+ - VT-) |
0.4V 至 1.2V (VCC=4.5V 時) |
| 工作溫度範圍 |
-40°C 至 +85°C |
| 封裝 |
14-TSSOP |
核心特性
- 施密特觸發輸入,適用於緩慢或噪聲輸入信號
- 寬電源電壓範圍:2V 至 6V
- 高噪聲抑制:4.5V 時典型滯回電壓 0.8V
- 低功耗:ICC 最大值 20 µA
- 兼容 TTL 和 CMOS 邏輯電平
- ESD 保護超過 2000V (HBM)
典型應用場景
- 5G 基站中的信號調理(例如時鐘信號淨化)
- 汽車儀表板中的按鍵去抖動
- 工業控制中傳感器接口的波形整形
- 微控制器的振盪器電路
- 通信模塊中的噪聲濾波
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