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SN74LS04N

Hex inverter, LS TTL, 12ns, PDIP-14

10000

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制造商零件：

SN74LS04N

包装：

PDIP-14 (19.3 x 6.35 x 4.57mm, 2.54mm pitch, through-hole)

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说明

产品概览

The SN74LS04N from Texas Instruments is a hex inverter (six independent NOT gates) with LS TTL technology, 12ns propagation delay, and industry-standard 7404 pinout in a 14-pin PDIP package.

主要规格

Number of Gates 6 (hex inverter)
逻辑家族 LS (Low-power Schottky)
电源电压 4.75V to 5.25V (5V nominal)
传播延迟 12ns typical @ 5V
Output Drive (IOL/IOH) 8mA / -0.4mA
工作温度 0°C to +70°C
包装 PDIP-14 (19.3 x 6.35mm)

特点

  • Six independent inverter gates
  • LS TTL technology
  • 12ns typical propagation delay
  • Industry-standard 7404 pinout

应用

  • Logic signal inversion
  • Active-HIGH to active-LOW conversion
  • Clock signal buffering and inversion
  • Logic level translation (TTL family)
  • Simple oscillator with RC feedback

The SN74LS04N from Texas Instruments contains six independent inverter (NOT) gates in a 14-pin PDIP package. Each gate performs Y = NOT(A), converting a HIGH input to a LOW output and vice versa. The 7404 is one of the most fundamental logic ICs, used whenever a signal needs to be inverted: converting active-HIGH to active-LOW, generating complementary signals, or constructing oscillators. Six inverters in one package makes the 7404 efficient for systems needing multiple inversions. The N suffix denotes the PDIP-14 through-hole package.

Each inverter in the SN74LS04N performs Y = NOT(A). The truth table is: 0→1, 1→0. The LS TTL inverter uses a multi-emitter input transistor (or diode-clamped input) and a totem-pole output stage. When the input is LOW, the output transistor is off and the pull-up transistor drives the output HIGH. When the input is HIGH, the output transistor is on and the pull-up is off, driving the output LOW. The 12ns propagation delay is the time from input transition to output transition. For a simple RC oscillator, an inverter with feedback resistor (1MΩ from output to input) and a capacitor (100nF from input to ground) creates a relaxation oscillator. However, the 7404 is not a Schmitt trigger, so for noisy or slowly-rising inputs, the 74LS14 (hex Schmitt inverter) is preferred to avoid output oscillation.

针脚 名称 类型 说明
1 1A 输入 Inverter 1 input
2 1Y 输出 Inverter 1 output
3 2A 输入 Inverter 2 input
4 2Y 输出 Inverter 2 output
5 3A 输入 Inverter 3 input
6 3Y 输出 Inverter 3 output
7 接地 电源 地面
8 4Y 输出 Inverter 4 output
9 4A 输入 Inverter 4 input
10 5Y 输出 Inverter 5 output
11 5A 输入 Inverter 5 input
12 6Y 输出 Inverter 6 output
13 6A 输入 Inverter 6 input
14 VCC 电源 Supply (4.75V to 5.25V)

SN74LS04N uses the PDIP-14 package with standard hex inverter pinout: VCC at Pin 14, GND at Pin 7. Six independent inverters: Inv 1 (Pin 1 in, Pin 2 out), Inv 2 (Pin 3 in, Pin 4 out), Inv 3 (Pin 5 in, Pin 6 out), Inv 4 (Pin 9 in, Pin 8 out), Inv 5 (Pin 11 in, Pin 10 out), Inv 6 (Pin 13 in, Pin 12 out). This is the most widely used pinout for 14-pin hex inverters, shared by 7404, 74LS04, 74HC04, 74HCT04, and 74AC04. For Schmitt-trigger input version, use SN74LS14N (same pinout, hysteresis on all inputs). For open-collector output, use SN74LS05N. Propagation delay is typically 10ns for LS technology.

  • Signal Inversion: Convert active-HIGH to active-LOW; e.g., invert /CS to CS for active-HIGH peripheral
  • Double Inversion: Two inverters in series = buffer; cleans up signal levels while maintaining polarity
  • RC Oscillator: Feedback resistor + input capacitor creates relaxation oscillator; ~1/(2.2×R×C) frequency
  • Complementary Clock: One inverter generates inverted clock; two outputs available (CLK and /CLK)
  • Level Translation: Convert 3.3V CMOS HIGH to TTL-compatible level through LS04; 5V output
模型 制造商 主要区别 包装 Supply
74LS04N TI/Nexperia Original TTL version with 5V-only supply, typical propagation delay 10-15ns DIP-14 5V TTL
74LS04D TI/Nexperia Surface-mount SOIC version of LS with identical logic function SOIC-14 5V TTL
74HC04D TI/Nexperia CMOS version with wide 2-6V supply range, lower power consumption and higher noise immunity SOIC-14 2-6V CMOS
74HC04N TI/Nexperia Through-hole DIP version of HC family for prototyping and repair DIP-14 2-6V CMOS
74HCT04D TI/Nexperia CMOS with TTL-compatible input levels, ideal for mixing with LS devices at 5V SOIC-14 4.5-5.5V TTL-in
74HCT04N TI/Nexperia Through-hole DIP version of HCT family for prototyping and repair DIP-14 4.5-5.5V TTL-in
74AC04D TI/Nexperia Advanced CMOS with 2-6V supply and higher output drive current (24mA vs 6mA for HC) SOIC-14 2-6V CMOS
74AC04N TI/Nexperia Through-hole DIP version of AC family for prototyping and repair DIP-14 2-6V CMOS
74LVC04D TI/Nexperia Low-voltage CMOS for 1.65-3.6V modern logic with 24mA output drive and bus-hold inputs SOIC-14 1.65-3.6V CMOS
74LVC04N TI/Nexperia Through-hole DIP version of LVC family for prototyping and repair DIP-14 1.65-3.6V CMOS
74AUP04D TI/Nexperia Ultra-low power CMOS with 0.8-3.6V supply for battery-powered and mobile applications SOIC-14 0.8-3.6V CMOS
74AUP04N TI/Nexperia Through-hole DIP version of AUP family for prototyping and repair DIP-14 0.8-3.6V CMOS

The 7404 is a Hex Inverter. 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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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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Contact Information

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Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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