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SN74HC541N

Octal buffer/driver, 3-state, 2 OE pins, HC CMOS 2-6V, PDIP-20

9500

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制造商零件：

SN74HC541N

包装：

PDIP-20 (24.33 x 6.35 x 5.08mm, 2.54mm pitch, through-hole)

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说明

产品概览

The SN74HC541N is an octal buffer/line driver with 3-state outputs from Texas Instruments, featuring output enable and HC CMOS technology in a 20-pin PDIP package.

主要规格

通道数 8 (octal buffer)
逻辑家族 HC (High-speed CMOS)
电源电压 2V to 6V
输出类型 3-state (high-impedance when disabled)
Output Enable 2 active-low OE pins (OE1, OE2)
传播延迟 18ns max at 5V
Output Drive ±6mA at 5V
输入类型 标准 CMOS
极性 Non-inverting
工作温度 -40°C to +85°C
包装 PDIP-20 (24.33 x 6.35mm)

特点

  • 8-bit non-inverting buffer with 3-state outputs
  • Dual active-low output enable (both must be low to enable)
  • Wide 2V to 6V operating voltage
  • High-impedance outputs when disabled
  • HC CMOS low power consumption
  • Directly drives bus lines
  • Suitable for driving heavy capacitive loads

应用

  • Bus driver and buffer
  • Memory address driver
  • Clock driver and buffer
  • Microprocessor I/O port isolation
  • General-purpose logic buffer

The SN74HC541N from Texas Instruments is an octal buffer and line driver with 3-state outputs and dual active-low output enable pins in a 20-pin PDIP through-hole package. The device provides non-inverting buffering of 8 data lines. The two output enable pins (OE1 and OE2) are both active-low; both must be low to enable the outputs. When either OE pin is high, all outputs enter the high-impedance state, allowing connection to shared bus lines. The HC (High-speed CMOS) technology provides 2V to 6V operating voltage range with low quiescent current. The ±6mA output drive at 5V can drive moderate capacitive loads on bus lines. The N suffix denotes the PDIP-20 through-hole package.

The SN74HC541N contains eight identical non-inverting buffer elements with a common output enable control. Each buffer passes the input signal to the output without inversion. The output enable logic ANDs the two active-low OE pins: when both OE1 and OE2 are low, the outputs follow the inputs (after the propagation delay). When either OE1 or OE2 is high, all eight outputs enter the high-impedance (3-state) state, effectively disconnecting the buffer from the bus. This allows multiple buffers to share a common bus without contention, as only one buffer is enabled at a time. The non-inverting nature preserves the original signal polarity, making the device suitable for address and data bus buffering where signal integrity must be maintained.

针脚 名称 类型 说明
1 OE1 输入 Output enable 1 (active low)
2-9 1A-8A 输入 Data inputs (8 bits)
10 接地 电源 地面
11-18 8Y-1Y 输出 Data outputs (8 bits, 3-state)
19 OE2 输入 Output enable 2 (active low)
20 VCC 电源 Supply (2V to 6V)

SN74HC541N uses the PDIP-20 package: VCC at Pin 20, GND at Pin 10. Eight non-inverting buffer/line drivers: inputs on Pins 2-9, outputs on Pins 18-11. Two active-low output enable controls: OE1=Pin 1, OE2=Pin 19. Both enables must be LOW for outputs to be active; either enable HIGH forces all outputs to high impedance. The dual-enable architecture allows simple expansion to wider bus widths. Unlike the 74HC245 transceiver, the 541 is unidirectional (input to output only) with 3-state outputs. Output drive capability is ±6mA at 5V. For bidirectional version, use SN74HC245N. For inverting buffer, use SN74HC540N (same pinout, inverted outputs).

  • Bus Driving: 3-state outputs connect to shared address/data buses; dual OE allows independent enable from two controllers
  • Memory Interface: Drives memory address lines with sufficient fan-out for multiple memory chips
  • Clock Buffer:

    Non-inverting buffer distributes clock signals without phase inversion

  • I/O Isolation: High-impedance mode isolates MCU pins from bus during reset or debug
  • Logic Level: 2V-6V range bridges between 3.3V and 5V systems (check VCC compatibility)
模型 制造商 主要区别 包装 Supply
74HC541D TI/Nexperia CMOS version with wide 2-6V supply range, lower power consumption and higher noise immunity SOIC-20 2-6V CMOS
74HC541N TI/Nexperia Through-hole DIP version of HC family for prototyping and repair DIP-20 2-6V CMOS
74HCT541D TI/Nexperia CMOS with TTL-compatible input levels, ideal for mixing with LS devices at 5V SOIC-20 4.5-5.5V TTL-in
74HCT541N TI/Nexperia Through-hole DIP version of HCT family for prototyping and repair DIP-20 4.5-5.5V TTL-in
74LVC541D TI/Nexperia Low-voltage CMOS for 1.65-3.6V modern logic with 24mA output drive and bus-hold inputs SOIC-20 1.65-3.6V CMOS
74LVC541N TI/Nexperia Through-hole DIP version of LVC family for prototyping and repair DIP-20 1.65-3.6V CMOS

The 74541 is a Octal Buffer/Driver with 3-State Output. 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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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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联系我们

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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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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.

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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.

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

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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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