What is IC 7486 Chip?
The 7486 IC chip is an integrated circuit that belongs to the 7400 series of TTL (Transistor-Transistor Logic) digital logic gates. The 7486 chip integrates four independent XOR gate circuits. An XOR gate is a logic gate with two inputs and one output. When the two inputs are the same, the output is a logic low; when the two inputs are different, the output is a logic high.
7486 chip: DM7486N
The 7486 chip adopts low-power design and CMOS technology, which makes it have low power consumption and high noise anti-interference performance. Its operating voltage range is 2V to 6V and its operating temperature range is -55°C to 125°C, making it suitable for a variety of industrial and military applications.
7486 IC Chip Features
The 7486 IC chip, being a part of the 7400 series of TTL (Transistor-Transistor Logic) integrated circuits, comes with several key features:
Four Independent XOR Gates: Each 7486 IC has four independent gates that perform the exclusive OR function.
Dual Input Pins: Every gate in this chip has two input pins for receiving binary signals.
Single Output Pin: Each gate provides one output based on the XOR logic operation performed on its inputs.
Wide Operating Voltage Range: The operating voltage range typically extends from about 4.75V to 5.25V, but can go as low as 2V and as high as 6V depending on specific conditions like temperature and speed.
High Noise Immunity: The TTL family offers good noise immunity due to its use of saturating transistors in its design.
Medium Speed Operation: In general, TTL chips like the 7486 offer medium-speed operation compared to other types of logic families such as CMOS or ECL.
Fan-Out Capability: A single output can drive multiple inputs without losing signal integrity which is an important feature for complex digital circuit designs.
Versatility: Because it's a basic building block in digital electronics, it can be used in various applications including adders/subtractors, parity generators/checkers and encryption/decryption algorithms among others.
Equivalent to SN7486N and DM7486N
IC 7486 Pinout
The IC 7486 chip, like many other integrated circuits in the 7400 series, comes in a standard 14-pin dual in-line package. The following is the pinout of the XOR gate IC 7486:
7486 Pinout Layout
7486 Pinout Description
| Pin Number | Description |
| 1 | A1: First input for XOR gate |
| 2 | B1: Second input for XOR gate |
| 3 | Y1: Output from XOR gate |
| 4 | A2: First input for XOR gate |
| 5 | B2: Second input for XOR gate |
| 6 | Y2: Output from XOR gate |
| 7 | GND (Ground): Connected to zero voltage or negative supply |
| 8 | A3 : First Input to third xor Gate |
| 9 | B3 : Second Input to third xor Gate |
| 10 | Y3 :Output from third xor Gate |
| 11 | A4 :First Input to fourth xor Gate |
| 12 | B4 :Second Input to fourth xor Gate |
| 13 | Y4 :Output from Fourth XorGate |
| 14 | Vcc/Vdd (+5V) - Positive Supply Voltage |
7486 IC Truth Table
The 7486 IC is a quad 2-input XOR (exclusive OR) gate. The truth table for an XOR gate is as follows:
| Input A | Input B | Output Y |
|---|
| 0 | 0 | 0 |
| 0 | 1 | 1 |
1
| 0 | 1 |
| 1 | 1 | 0 |
This means that the output Y will be high (logic level "1") if and only if exactly one of the inputs A or B is high. If both inputs are low or both are high, then the output will be low (logic level "0"). This behavior gives it its name - Exclusive OR, because it excludes the condition where both inputs are true.
Dimensional Drawing
The physical dimensions of the 7486 are as follows:
IC7486 Dimensional
7486 IC Equivalent
The 7486 IC is a quad 2-input XOR gate, part of the TTL (Transistor-Transistor Logic) family. Here are some equivalents integrated circuit
:
| 7486 Equivalent Chip | Description |
|---|
| SN7486N | This is Texas Instrument's version of the same chip. |
| DM7486N | Fairchild Semiconductor's version of this chip. |
| 74LS86 | A low-power Schottky variant with essentially identical functionality but better performance characteristics. |
| 74HC86 | High-speed CMOS variant with compatible inputs to interface easily with TTL logic levels. |
7486 Integrated Circuit Applications
The 7486 IC, being an XOR (exclusive OR) gate, has a variety of applications in digital electronics. Here are some examples:
Arithmetic Circuits: The most common use for XOR gates is in arithmetic circuits where they're used to build adders and subtractors. A single XOR gate can be used as a half-adder.
Parity Generators and Checkers: Parity bits are often added to binary data for error detection purposes during transmission or storage. An odd parity bit is generated by counting the number of 1s in the data and adding a '0' or '1' to make the total count odd; even parity does the opposite.
Encryption/Decryption Algorithms: In cryptography, simple encryption algorithms such as Vernam cipher (one-time pad) utilize the properties of XOR operation for encrypting plaintext into ciphertext and vice-versa.
Data Comparison: Two sets of binary numbers can be compared using an array of XOR gates which will output '0' if both inputs are identical, otherwise it outputs '1'.
Digital Logic Testing: Because an XOR function gives high output when input signals differ, this property makes it useful in logical circuit testing equipment like logic comparators or identity comparators.
Binary to Gray Code Conversion: Binary-to-Gray code conversion requires exclusive OR operations between certain bits of binary numbers - another application where these ICs find their use.
Frequently Asked Questions
1. What is the 1st pin on a 7486?
The first pin on a 7486 IC is Input A for the first XOR gate.
2. What is pin 7 on the 7486 XOR chip?
Pin number 7 of a standard DIP (Dual Inline Package) version of a TTL-based logic IC like the 7486, is typically connected to ground or "GND". It's one part of powering up the IC.
3. What is the function of 7486?
The primary function of a 7486 integrated circuit (IC) is to serve as four independent two-input exclusive OR (XOR) gates in digital circuits. This means that it can perform an XOR operation between two binary inputs and provide an output accordingly.
4. How many gates are there in a regular 7486 chip?
There are four XOR gates in each individual package or unit of this particular Integrated Circuit (IC).
5. What does '74' mean in '74'86 IC?
The prefix '74' originally indicated that this series was designed using bipolar technology, specifically transistor-transistor logic (TTL). Over time, enhancements were made to improve speed and power consumption without changing compatibility with original TTL families; these include LS ('Low-power Schottky'), HC ('High-speed CMOS'), etc., but they still retain their initial '74' designation.