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SN74HC594DR TI Shift Register | 16-SOIC | 8-Bit, Serial-In, Parallel-Out
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Product Overview
The SN74HC594DR from Texas Instruments is an 8-bit shift register with output latches and 3-state outputs. It features a serial input (SER), a shift clock (SRCLK), a storage register clock (RCLK), and an output enable (OE). Data is shifted on the rising edge of SRCLK and transferred to the storage register on the rising edge of RCLK. The 3-state outputs are controlled by OE. This device is ideal for expanding digital outputs in microcontroller-based systems.
Detailed Technical Specifications
| Parameter | Value |
|---|---|
| Supply Voltage (VCC) | 2 V to 6 V |
| Input Voltage (VI) | 0 V to VCC |
| Output Voltage (VO) | 0 V to VCC |
| High-Level Input Voltage (VIH) | 3.15 V (min at VCC=4.5V) |
| Low-Level Input Voltage (VIL) | 0.9 V (max at VCC=4.5V) |
| High-Level Output Current (IOH) | -6 mA (max at VCC=4.5V) |
| Low-Level Output Current (IOL) | 6 mA (max at VCC=4.5V) |
| Propagation Delay (tpd) | 13 ns (typ at VCC=5V, CL=50pF) |
| Operating Temperature | -40°C to 85°C |
| Package | 16-SOIC |
Key Features
- 8-bit serial-in, parallel-out shift register with storage register
- 3-state outputs for bus-oriented applications
- Wide operating voltage range: 2 V to 6 V
- High noise immunity: typical VOH = VCC - 0.1 V at 6 mA
- Low power consumption: ICC typically 4 µA
- Direct interface with TTL levels
- Shift and storage register clocks independent
Target Applications
- 5G base station control logic expansion
- Automotive dashboard display drivers
- Industrial programmable logic controllers (PLCs)
- LED matrix displays
- Microcontroller I/O expansion for IoT devices
Global Supply Chain & Wholesale Solutions
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- 100% Original & Authentic: All components are guaranteed to be authentic with strict quality control.
- RoHS Compliant: All electronic components comply with international environmental and safety standards.
- Original Factory Packaging: We maintain original factory packaging and seals to ensure ESD protection and physical integrity.
產品概述
SN74HC594DR 是德州儀器（TI）生產的8位移位寄存器，帶有輸出鎖存器和三態輸出。它具有串行輸入（SER）、移位時鐘（SRCLK）、存儲寄存器時鐘（RCLK）和輸出使能（OE）。數據在SRCLK上升沿移位，並在RCLK上升沿傳輸到存儲寄存器。三態輸出由OE控制。該器件非常適合在微控制器系統中擴展數字輸出。
詳細技術參數
| 參數 | 數值 |
|---|---|
| 電源電壓 (VCC) | 2 V 至 6 V |
| 輸入電壓 (VI) | 0 V 至 VCC |
| 輸出電壓 (VO) | 0 V 至 VCC |
| 高電平輸入電壓 (VIH) | 3.15 V (最小值，VCC=4.5V) |
| 低電平輸入電壓 (VIL) | 0.9 V (最大值，VCC=4.5V) |
| 高電平輸出電流 (IOH) | -6 mA (最大值，VCC=4.5V) |
| 低電平輸出電流 (IOL) | 6 mA (最大值，VCC=4.5V) |
| 傳播延遲 (tpd) | 13 ns (典型值，VCC=5V, CL=50pF) |
| 工作溫度 | -40°C 至 85°C |
| 封裝 | 16-SOIC |
核心特性
- 8位串行輸入、並行輸出移位寄存器，帶存儲寄存器
- 三態輸出，適用於總線應用
- 寬工作電壓範圍：2 V 至 6 V
- 高抗噪能力：典型 VOH = VCC - 0.1 V (6 mA)
- 低功耗：ICC 典型值 4 µA
- 直接與TTL電平接口
- 移位時鐘和存儲寄存器時鐘獨立
典型應用場景
- 5G基站控制邏輯擴展
- 汽車儀表盤顯示驅動
- 工業可編程邏輯控制器（PLC）
- LED矩陣顯示
- 物聯網設備的微控制器I/O擴展
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