الصفحة الرئيسية > الدوائر المتكاملة الدوائر المتكاملة > SN74LS75N

SN74LS75N

4-bit transparent latch, dual enables, complementary outputs, LS TTL, PDIP-16

3000

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جزء الشركة المصنعة ： جزء الشركة المصنعة

SN74LS75N

الحزمة ： الحزمة

PDIP-16 (19.3 x 6.35 x 4.57mm, 2.54mm pitch, through-hole)

العلامة التجارية ： العلامة التجارية
فئات المنتجات:：فئات المنتجات
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توصيات أخرى قد تكون مهتماً بها.

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الوصف

نظرة عامة على المنتج

The SN74LS75N from Texas Instruments is a 4-bit bistable transparent latch — the TTL counterpart of the CD4042, providing four D-type latches with complementary outputs in a 16-pin PDIP package.

المواصفات الرئيسية

الوظيفة 4-bit bistable transparent latch
عائلة المنطق LS (Low-power Schottky)
جهد الإمداد 4.75V to 5.25V
Latches 4 (arranged as 2 pairs with 2 enable inputs)
Enable Inputs 1C (enables latches 1&2), 2C (enables latches 3&4)
Outputs Q and Q̄ per latch (complementary)
تأخير الانتشار 14-30ns (D to Q)
Setup Time 20ns minimum
Hold Time 5ns minimum
درجة حرارة التشغيل 0°C to +70°C
الحزمة PDIP-16 (19.3 x 6.35mm)

الميزات

  • 4 D-type transparent latches
  • Two enable inputs (each controls 2 latches)
  • Complementary Q and Q̄ outputs
  • Transparent: Q follows D while enable is HIGH
  • Latched: Q holds when enable goes LOW
  • Diode-clamped inputs

التطبيقات

  • Data holding registers
  • Address latching
  • I/O port buffering
  • Indicator drivers

The SN74LS75N from Texas Instruments is a 4-bit bistable transparent latch consisting of four D-type latches with two active-HIGH enable inputs. When the enable (C) is HIGH, the Q output follows the D input (transparent mode). When the enable goes LOW, the data present at D just before the transition is latched and held at Q. The four latches are arranged in two pairs: enable 1C controls latches 1 and 2; enable 2C controls latches 3 and 4. This dual-enable arrangement allows the 7475 to latch two 2-bit groups independently or one 4-bit group simultaneously (by tying 1C and 2C together). Each latch provides complementary Q and Q̄ outputs. The 7475 is the TTL equivalent of the CMOS CD4042 but without polarity control — it’s always transparent when the enable is HIGH. The 30ns propagation delay and 20ns setup time make it suitable for medium-speed digital systems. The N suffix denotes the PDIP-16 through-hole package.

Each latch in the SN74LS75N operates as a transparent D latch. When the enable input (C) is HIGH: Q follows D in real time; Q̄ follows D̄ (complement of D). When C transitions from HIGH to LOW: the data present at D at the moment of transition is captured and held at Q; Q̄ holds the complement. When C remains LOW: Q and Q̄ hold their latched values regardless of changes at D. The two enable inputs (1C and 2C) each control a pair of latches: 1C controls latches 1 and 2 (pins 2D,3D → 2Q,3Q); 2C controls latches 3 and 4 (pins 5D,6D → 5Q,6Q). For 4-bit simultaneous latching: tie 1C and 2C together; all four latches capture on the same enable transition. For independent 2-bit latching: separate 1C and 2C; each pair captures at different times. The 20ns setup time means D must be stable at least 20ns before C goes LOW; the 5ns hold time means D must remain stable for 5ns after C goes LOW.

دبوس الاسم النوع الوصف
1 1Q̄ المخرجات Latch 1 complementary output
2 1Q المخرجات Latch 1 true output
3 1D المدخلات Latch 1 data input
4 2D المدخلات Latch 2 data input
5 2Q المخرجات Latch 2 true output
6 2Q̄ المخرجات Latch 2 complementary output
7 GND الطاقة أرضي
8 3Q̄ المخرجات Latch 3 complementary output
9 3Q المخرجات Latch 3 true output
10 3D المدخلات Latch 3 data input
11 4D المدخلات Latch 4 data input
12 4Q المخرجات Latch 4 true output
13 4Q̄ المخرجات Latch 4 complementary output
14 2C المدخلات Enable for latches 3 & 4 (active HIGH)
15 1C المدخلات Enable for latches 1 & 2 (active HIGH)
16 VCC الطاقة Supply (5V)
  • 4-Bit Data Latch: 4 data bits → 1D,2D,3D,4D; 1C and 2C tied together; enable pulse captures all 4 bits simultaneously; Q outputs held stable
  • 2+2 Independent Latching: 1C and 2C separate; 2-bit address latched by 1C; 2-bit data latched by 2C; independent timing
  • Address Latch (8051):

    Multiplexed AD0-AD3 → 1D-4D; ALE → 1C+2C; Q outputs = stable lower address bits

  • Indicator Driver: System status bits → D inputs; enable from control logic; Q̄ drives active-LOW LED indicators; Q drives active-HIGH
الطراز الشركة المصنعة الفرق الرئيسي الحزمة Supply
74LS75N TI/Nexperia Original TTL version with 5V-only supply, typical propagation delay 10-15ns DIP-16 5V TTL
74LS75D TI/Nexperia Surface-mount SOIC version of LS with identical logic function SOIC-16 5V TTL
74HC75D TI/Nexperia CMOS version with wide 2-6V supply range, lower power consumption and higher noise immunity SOIC-16 2-6V CMOS
74HC75N TI/Nexperia Through-hole DIP version of HC family for prototyping and repair DIP-16 2-6V CMOS
74HCT75D TI/Nexperia CMOS with TTL-compatible input levels, ideal for mixing with LS devices at 5V SOIC-16 4.5-5.5V TTL-in
74HCT75N TI/Nexperia Through-hole DIP version of HCT family for prototyping and repair DIP-16 4.5-5.5V TTL-in

The 7475 is a 4-Bit Bistable Latch. Family variants span from the original LS TTL (5V only) to modern LVC/AUP (down to 0.8V). HC and HCT versions offer 2-6V CMOS operation with HCT providing TTL-compatible input thresholds for mixed 5V systems. CD4000-series equivalents offer the widest 3-18V supply range at the cost of lower switching speed. DIP packages (N suffix) are through-hole; SOIC (D suffix) and TSSOP are surface-mount.

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ضمان الجودة

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

1. Authorized & Genuine Sourcing Promise

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

 

الشحن والدفع

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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We offer a variety of secure and convenient payment methods to meet diverse business cooperation needs. Details are as follows:
  1. Accepted Payment Methods
  • T/T (Bank Wire Transfer): The primary settlement method for bulk orders and a widely used international payment channel.
  • PayPal: Ideal for small orders, sample orders and quick payments.

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    US Dollar (USD) is the default settlement currency. RMB is available for domestic customers.

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  • Economy Logistics: Air freight and sea freight for large-volume cargo
  • Domestic Delivery: SF Express, Yunda Express
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  • In-stock items: Orders confirmed and fully paid before 14:00 (GMT+8) will be shipped on the same day. All other orders will be dispatched within 1 to 2 working days.
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    Within 24 hours after dispatch, we will send the tracking number, commercial invoice, packing list and other documents to your email or communication account. You may check the shipment status online in real time.

3. General Order Rules & Notes

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    We support flexible minimum order quantities for samples, small-batch and large-batch orders. All sample orders shall comply with the above shipping and payment policies.

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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
  • Business Hours: 09:00 – 18:00, Monday to Friday. Closed on weekends and official public holidays.
  • Notice: Please make an appointment via email or communication tools one day in advance, and present your order information upon pickup.

Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

الخدمة والتغليف

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.

4. Professional Technical Support

Our senior engineer team provides free technical consultation, model selection guidance and original manufacturer datasheets. We assist customers in solving problems related to product R&D, circuit design and component application, providing reliable technical support for project progress.

5. Sourcing for Special Components

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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

  • All components are packed separately to avoid damage caused by friction and collision;
  • Shockproof buffer materials are added for fragile products to ensure transportation safety;
  • Each package is clearly marked with part number, quantity, batch number and specifications for easy inventory counting and management.

2. Classified Professional Packaging

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  • Vacuum Moisture-proof Packaging: Moisture-sensitive components are vacuum-sealed with desiccants to isolate humid air, suitable for ocean transportation and long-term storage.
  • Original Factory Packaging: Integrated circuits of brands such as NXP are delivered with original reels, trays or tubes by default, retaining complete original packaging and adapting to automated SMT production lines.
  • Discrete Device Packaging: Discrete devices such as SMD resistors, power resistors and LEDs are quantitatively and classifiedly packaged with accurate quantity and clear marking.
  • 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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