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Product Overview
The SN74HC253DT from Texas Instruments is a high-speed dual 4-input multiplexer with 3-state outputs. It operates over a wide supply voltage range of 2V to 6V, making it suitable for various logic-level applications. The device features two independent 4-input multiplexers that select data from four sources and route it to a single output. The 3-state outputs allow connection to bus-oriented systems. The SN74HC253DT is housed in a 16-pin SOIC package, ideal for space-constrained designs.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
2V to 6V |
| High-Level Input Voltage (VIH) |
3.15V (min) at VCC=4.5V |
| Low-Level Input Voltage (VIL) |
1.35V (max) at VCC=4.5V |
| High-Level Output Current (IOH) |
-4mA (max) at VCC=4.5V |
| Low-Level Output Current (IOL) |
4mA (max) at VCC=4.5V |
| Propagation Delay (tpd) |
15ns (typ) at VCC=4.5V, CL=50pF |
| Input Capacitance |
3pF (typ) |
| Operating Temperature |
-40°C to +85°C |
| Package |
16-SOIC |
Key Features
- Dual 4-input multiplexer with common select lines
- 3-state outputs for bus-oriented applications
- Wide operating voltage range: 2V to 6V
- High noise immunity: typical VNIH = VNIL = 28% of VCC
- Low power consumption: ICC of 4µA (max) at 25°C
- Compatible with TTL levels
- ESD protection exceeds 2000V per MIL-STD-883, Method 3015
Target Applications
- Data routing in 5G base stations (e.g., signal selection in remote radio units)
- Automotive dashboard displays (e.g., selecting sensor data for instrument cluster)
- Industrial control systems (e.g., multiplexing analog/digital signals in PLCs)
- Consumer electronics (e.g., input selection in audio/video switchers)
- Communication equipment (e.g., channel selection in routers)
Global Supply Chain & Wholesale Solutions
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SN74HC253DT. Our core advantages include:
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Original Factory Packaging: We maintain original factory packaging
and seals to ensure ESD protection and physical integrity.
產品概述
SN74HC253DT 是德州儀器 (TI) 的一款高速雙路 4 輸入多路復用器,具有三態輸出。它可在 2V 至 6V 的寬電源電壓範圍內工作,適用於各種邏輯電平應用。該器件包含兩個獨立的 4 輸入多路復用器,可從四個源中選擇數據並路由至單個輸出。三態輸出便於連接總線型系統。SN74HC253DT 採用 16 引腳 SOIC 封裝,適合空間受限的設計。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
2V 至 6V |
| 高電平輸入電壓 (VIH) |
VCC=4.5V 時最小值 3.15V |
| 低電平輸入電壓 (VIL) |
VCC=4.5V 時最大值 1.35V |
| 高電平輸出電流 (IOH) |
VCC=4.5V 時最大值 -4mA |
| 低電平輸出電流 (IOL) |
VCC=4.5V 時最大值 4mA |
| 傳播延遲 (tpd) |
VCC=4.5V, CL=50pF 時典型值 15ns |
| 輸入電容 |
典型值 3pF |
| 工作溫度 |
-40°C 至 +85°C |
| 封裝 |
16-SOIC |
核心特性
- 雙路 4 輸入多路復用器,共用選擇線
- 三態輸出,適用於總線型應用
- 寬工作電壓範圍:2V 至 6V
- 高抗噪能力:典型 VNIH = VNIL = 28% VCC
- 低功耗:25°C 時 ICC 最大值 4µA
- 與 TTL 電平兼容
- ESD 保護超過 2000V(MIL-STD-883 方法 3015)
典型應用場景
- 5G 基站中的數據路由(例如遠程射頻單元中的信號選擇)
- 汽車儀表盤顯示(例如選擇傳感器數據用於儀表組)
- 工業控制系統(例如在 PLC 中復用模擬/數字信號)
- 消費電子產品(例如音頻/視頻切換器中的輸入選擇)
- 通信設備(例如路由器中的通道選擇)
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