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SN74HC595N

8-bit shift register with output latch, 3-state outputs, 25MHz, 16-PDIP

7553

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制造商零件：

SN74HC595N

包装：

16-PDIP

品牌：
产品类别：
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服务与包装
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说明

产品概览

The SN74HC595N from Texas Instruments is an 8-bit shift register with output latch and 3-state outputs. It converts serial input to 8-bit parallel output using only 3 MCU pins, with daisy-chain capability for unlimited output expansion. Packaged in 16-PDIP.

主要规格

逻辑家族 74HC (High-Speed CMOS)
Bits 8-bit shift register + 8-bit output latch
电源电压 2V to 6V
Shift Frequency 25MHz (typ at 5V)
输出电流 +/-6mA per output (at 5V)
传播延迟 20ns (typ at 5V)
包装 16-PDIP
工作温度 -40 to +85 C

特点

  • 8-bit serial-in, parallel-out shift register
  • Separate output latch for glitch-free updates
  • 3-state outputs for bus interface
  • Daisy-chain serial output (QH’)
  • Direct clear (SRCLR) for register reset
  • Output enable (OE) for 3-state control

应用

  • Expanding MCU output pins
  • LED matrix and display driving
  • Serial-to-parallel data conversion
  • Daisy-chained I/O expansion

The SN74HC595N from Texas Instruments is an 8-bit shift register with output latch and 3-state outputs that converts serial data from 3 MCU pins (DATA, SRCLK, RCLK) into 8 parallel outputs. The two-stage architecture (shift register + output latch) allows new data to be shifted in while the current output remains stable, eliminating output glitches during updates. The QH’ serial output enables daisy-chaining multiple 74HC595 devices for unlimited output expansion while using only 3 MCU pins. The 3-state outputs with Output Enable (OE) allow the device to be connected to a shared bus. With 25MHz shift frequency and +/-6mA output drive at 5V, it is the most popular IC for LED matrix driving and GPIO expansion.

The 74HC595 contains two 8-bit registers: the shift register and the storage register (output latch). Serial data is clocked into the shift register on the rising edge of SRCLK. When RCLK rises, the shift register contents are copied to the storage register, which drives the Q0-Q7 outputs. This two-stage pipeline allows shifting new data without disturbing the current output. The SRCLR pin asynchronously clears the shift register. The OE pin controls the 3-state output buffers: when OE is high, all outputs are high-impedance; when low, the storage register drives the outputs. The QH’ pin outputs the last bit of the shift register, which becomes the first bit of the next daisy-chained device.

针脚 名称 功能
1 Q1 Parallel output bit 1
2 Q2 Parallel output bit 2
3 Q3 Parallel output bit 3
4 Q4 Parallel output bit 4
5 Q5 Parallel output bit 5
6 Q6 Parallel output bit 6
7 Q7 Parallel output bit 7
8 接地 地面
9 Q7′ Serial output (for daisy chain)
10 SRCLR Shift register clear (active low)
11 SRCLK Shift register clock input
12 RCLK Storage register clock (latch)
13 OE Output enable (active low, 3-state)
14 SER 串行数据输入
15 Q0 Parallel output bit 0
16 VCC Supply voltage (2-6V)
  • Expanding MCU GPIO from 3 pins to 8+ outputs using daisy-chain shift registers
  • LED matrix and 7-segment display driving with glitch-free latch updates
  • Serial-to-parallel data conversion with 25MHz shift rate and 3-state bus
  • Home automation relay control boards with unlimited channel expansion
模型 制造商 主要区别
74HC595D Nexperia SOIC-16 surface mount
74HC165N TI Parallel-in serial-out (reverse direction)
TPIC6B595 TI Power shift register, 50V/150mA, open drain
MAX7219 ADI SPI LED driver with current control
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All of our electronic components are procured from official authorized distributors and original manufacturers. We strictly reject counterfeits, refurbished parts, disassembled components and gray-market goods. Every product is guaranteed to be brand-new original parts and fully consistent with the original technical parameters. For branded products such as NXP IC series, we maintain complete supply channel documents to realize full product traceability.

2. Strict Full-batch Quality Inspection

We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

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Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

发货与付款

Materialparts is a professional global supplier of electronic components with over 20 years of industry experience. We provide one-stop supply of passive components, integrated circuits, as well as parts for industrial control, automotive electronics, consumer electronics and medical devices. Below are the unified shipping and payment policies applicable to all orders, samples and bulk purchases worldwide.

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5. Local Pickup in Shenzhen

Local pickup service is available for customers in Shenzhen and surrounding areas:
  • Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong Province, China
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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

服务与包装

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

Core Services

1. One-stop Sourcing & BOM Support

We specialize in a full range of passive and active electronic components, including SMD resistors, power resistors, connectors, aviation connectors, LED beads, flexible circuit boards, printed circuit boards, and integrated circuits. Our professional team provides BOM list consolidation, component matching, and alternative model recommendation services. We support sample orders, small-batch trial production, and mass production orders with flexible MOQs to meet diverse procurement needs.

2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

3. Fast Quotation & Order Processing

Our customer service team responds promptly to inquiries and quotation requests. All in-stock orders will be processed within one working day. We provide stocking reservation services for long-term cooperative customers, effectively solving problems such as component shortages and unstable supply chains.

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6. Global Logistics & Document Services

We cooperate with mainstream international logistics providers including DHL, FedEx, UPS and TNT to achieve fast global delivery. We can provide complete export documents such as customs declaration files, commercial invoices and packing lists to ensure smooth customs clearance for international shipments. Local pickup is also available for customers in Shenzhen, China.

Professional Packaging Standards

Electronic components are sensitive to static electricity, collision, moisture and dust. We adopt industry-standard anti-static packaging solutions to fully ensure the integrity of goods during transportation and storage.

1. General Packaging Specifications

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  • Connector / Aviation Connector Packaging: Hard outer packaging is adopted to prevent pin bending and structural deformation.

3. Custom Packaging Services

We provide value-added services including personalized packaging, custom labeling and re-reeling according to customer requirements, fully matching your production and warehouse management standards.

Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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