Comprehensive collection of electronic components including logic gates, decoders, counters, multiplexers and displays. Each component includes detailed datasheets, truth tables, pinouts and practical applications for engineers and students.
The 7408 integrated circuit is a 2-input AND logic gate. Check its datasheet for technical details. For the output to be high (1), both inputs must be high (1), as shown in its truth table.
2 inputs and 1 output
Output = A AND BControl systems, Arithmetic circuits...
| Input A | Input B | Output |
|---|---|---|
| 1 | ||
| 1 | ||
| 1 | 1 | 1 |
The 7432 integrated circuit is a 2-input OR logic gate. The output will be high (1) if at least one input is high (1), check its truth table. The datasheet contains more information.
2 inputs and 1 output
Output = A OR BDetection systems, Selection circuits
| Input A | Input B | Output |
|---|---|---|
| 1 | 1 | |
| 1 | 1 | |
| 1 | 1 | 1 |
The 7404 integrated circuit is a NOT logic gate (inverter). It has 1 input and 1 output, inverting the signal. Check its truth table and datasheet for specifications.
1 input and 1 output
Output = NOT ASignal inversion, Oscillators
| Input A | Input B | Output |
|---|---|---|
| 1 | ||
| 1 |
The 7400 integrated circuit is a 2-input NAND gate (AND + NOT). The output is low (0) only if both inputs are high (1), as indicated in its truth table. Check the datasheet for more details.
2 inputs and 1 output
Output = NOT (A AND B)Memory circuits (Flip-flops), Universal logic gate
| Input A | Input B | Output |
|---|---|---|
| 1 | ||
| 1 | 1 | |
| 1 | 1 | |
| 1 | 1 |
The 7486 integrated circuit is a 2-input XOR (exclusive OR) logic gate. The output is high (1) only if the inputs are different. Useful in parity circuits and adders.
2 inputs and 1 output
Output = A XOR BParity circuits, Binary adders...
| Input A | Input B | Output |
|---|---|---|
| 1 | 1 | |
| 1 | 1 | |
| 1 | 1 |
The 7402 integrated circuit is a 2-input NOR logic gate (OR + NOT). The output is high (1) only if both inputs are low (0). It is a universal gate like NAND.
2 inputs and 1 output
Output = NOT (A OR B)Flip-flops, Universal logic gate...
| Input A | Input B | Output |
|---|---|---|
| 1 | ||
| 1 | ||
| 1 | ||
| 1 | 1 |
The 74266 integrated circuit is a 2-input XNOR (exclusive NOR) logic gate. The output is high (1) when the inputs are equal. It is the opposite of XOR.
2 inputs and 1 output
Output = NOT (A XOR B)Comparators, Equality detectors...
| Input A | Input B | Output |
|---|---|---|
| 1 | ||
| 1 | ||
| 1 | ||
| 1 | 1 | 1 |
The 7407 integrated circuit is an open-collector buffer/driver. It amplifies current without changing signal logic. Useful for driving heavy loads or interfaces.
1 input and 1 output
Output = A (amplified)LED drivers, Relay interfaces...
| Input A | Input B | Output |
|---|---|---|
| 1 | 1 |
The SN7447A is a BCD to 7-segment decoder with open collector active-low outputs, designed for common-anode displays. It includes digit on/off control and lamp test functionality. It is TTL logic equivalent to the LS47 and widely used in classic projects.
4 BCD inputs, 7 display outputs
BCD-7seg Decoder7-segment displays, Digital counters...
| Input A | Input B | Output |
|---|---|---|
The SN7448 is similar to the SN7447 but with active-high outputs for common-cathode displays. It includes internal pull-up resistors and can directly drive LEDs without external resistors.
4 BCD inputs, 7 display outputs
BCD-7seg DecoderCommon-cathode displays, Digital instruments...
The SN74LS138 is a 3-to-8 line decoder/demultiplexer. It takes 3 selection bits and activates one of 8 outputs. It has 3 enable inputs, ideal for addressing chips or expanding control lines. Popular in digital electronics for TTL compatibility and low cost.
3 selection inputs, 8 outputs
3-to-8 DecoderMemory addressing, Data demultiplexing...
| Input A | Input B | Output |
|---|---|---|
The SN74LS90 is a decade counter (divide by 10). It consists of four master-slave flip-flops and logic for binary/BCD counting. It provides QA...QD outputs; can obtain a square wave of 10 (or cycle of 10) by connecting QD to the clock input. It has synchronous reset and preset. Widely used for BCD digit counters in educational projects.
4 BCD outputs, 2 clock inputs
BCD Counter (mod-10)BCD digit counters, Frequency dividers...
| Input A | Input B | Output |
|---|---|---|
The SN74LS92 is a "Divide-By-12" counter (4 bits). Similar to the 74LS90, but counting resets at 12. It also has internal flip-flops and ports for cascading with other counters. Widely used in frequency dividers and modular counters.
4 binary outputs, 2 clock inputs
mod-12 CounterFrequency dividers, Modular counters...
| Input A | Input B | Output |
|---|---|---|
The SN74LS93 is a 4-bit binary counter (divide by 16). Compatible with the LS family, it counts from 0 to 15 in binary. Includes internal flip-flops and cascade capability for larger counters.
4 binary outputs, 2 clock inputs
4-bit binary counterBinary counters, Frequency dividers 梅16...
The SN74LS151 is an 8-to-1 multiplexer/demultiplexer. It selects one of eight data inputs to a single output channel. It includes enable signal (strobe) and complementary outputs. Common in parallel-to-serial conversion applications.
8 data inputs, 3 select lines
8:1 MultiplexerParallel to serial conversion, Data source selection...
| Input A | Input B | Output |
|---|---|---|
The SN74LS153 is a dual 4-to-1 multiplexer. Each block selects from 4 inputs according to two address bits. It also has independent enables. Allows parallel-to-serial conversion or data bus "mux". Widely used in TTL systems for offering two channels in one package.
2 independent 4:1 multiplexers
Dual 4:1 MultiplexerData bus multiplexing, Dual signal selection...
| Input A | Input B | Output |
|---|---|---|
The SC56-11EWA is a 1-digit 7-segment display, 0.56" (~14.2 mm) high, red color, diffused face. It is common cathode (CC) type, each segment connects to a pin with its current limiting resistor and the common pin to GND. Widely used for numerical display in TTL circuits.
7 segments + decimal point
7-seg CC DisplayDigital counters, Digital clocks...
The LM317T is a three-terminal adjustable linear voltage regulator capable of supplying more than 1.5A over an output voltage range of 1.2V to 37V. It requires only two external resistors to set the output voltage.
3 terminals: IN, OUT, ADJ
Positive adjustable linear regulatorRegulated power supplies, Battery chargers...
The LM337T is a three-terminal adjustable negative linear voltage regulator, complementary to the LM317T. Capable of supplying more than 1.5A over an output voltage range of -1.2V to -37V.
3 terminals: IN, OUT, ADJ
Negative adjustable linear regulatorDual power supplies, Operational amplifiers...
The LM7805 is a three-terminal fixed linear voltage regulator that provides a stable +5V output with a maximum current of 1A. It is widely used in digital systems and logic circuits.
3 terminals: IN, GND, OUT
Positive fixed linear regulatorDigital systems, Microcontrollers...
The LM7812 is a three-terminal fixed linear voltage regulator that provides a stable +12V output with a maximum current of 1A. Ideal for powering operational amplifiers and analog circuits.
3 terminals: IN, GND, OUT
Positive fixed linear regulatorOperational amplifiers, Analog circuits...
The LM2596 is a high-efficiency step-down switching voltage regulator capable of handling up to 3A of output current. It offers higher efficiency than traditional linear regulators.
5 pins: VIN, SW, GND, FB, ON/OFF
Step-down switching regulator (Buck)Efficient power supplies, Battery systems...
No hay comentarios a煤n. 隆S茅 el primero en comentar!
Logic gates are electronic devices that perform basic logical operations based on Boolean algebra. They operate with binary signals (0 and 1, low and high voltage) and are the essential building blocks of all digital systems.
An active low pin must be connected to a low logic level (0 volts) to activate, while an active high pin must be connected to a high logic level (3 or 5 volts).
They are implemented in ICs such as those from the TTL or CMOS family, to save space and increase efficiency.
Control systems
Detection systems
Signal inversion
Memory circuits (Flip-flops)
Parity circuits