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SN74LS90N
+BOMIC DECADE COUNTER 4-BIT 14DIP
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Nhà sản xuấtTexas Dụng cụ
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Ông. Phần #SN74LS90N
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Thông số kỹ thuật
| thuộc tính | Giá trị |
| Series | 74LS |
| Part Status | Active |
| Base Product Number | 74LS90 |
| Logic Type | Counter, Decade |
| Direction | Up |
| Number of Elements | 1 |
| Number of Bits per Element | 4 |
| Reset | Asynchronous |
| Count Rate | 42 MHz |
| Trigger Type | Negative Edge |
| Voltage - Supply | 4.75 V ~ 5.25 V |
| Operating Temperature | 0°C ~ 70°C |
| Mounting Type | Through Hole |
| Package | 14-DIP (0.300", 7.62mm) |
| Supplier Device Package | 14-PDIP |
| Packaging | Bulk, Tube |
Tổng quan
Description
The SN74LS90N is a digital decade counter integrated circuit (IC) from Texas Instruments. It belongs to the 74LS series, known for its low-power Schottky transistor-transistor logic (TTL). The SN74LS90N is specifically a divide-by-10 counter, making it suitable for applications requiring counting from 0 to 9. It consists of four flip-flops with additional gating, which enables it to count in a binary-coded decimal (BCD) format.
Key features of the SN74LS90N include:
- Functionality: It can operate as a divide-by-2 and divide-by-5 counter separately or combined for divide-by-10 operation.
- Inputs: It has a clock input, two reset inputs (R1 and R2), and a set of inputs for managing the counter's state.
- Outputs: The IC provides four output pins representing the counter's state in binary form.
- Supply Voltage: Operates at a typical supply voltage of 5V.
- Package: The SN74LS90N is commonly available in a 14-pin dual in-line package (DIP).
Due to its versatility and reliability, it's widely used in digital clocks, frequency counters, and digital meters.
Key features of the SN74LS90N include:
- Functionality: It can operate as a divide-by-2 and divide-by-5 counter separately or combined for divide-by-10 operation.
- Inputs: It has a clock input, two reset inputs (R1 and R2), and a set of inputs for managing the counter's state.
- Outputs: The IC provides four output pins representing the counter's state in binary form.
- Supply Voltage: Operates at a typical supply voltage of 5V.
- Package: The SN74LS90N is commonly available in a 14-pin dual in-line package (DIP).
Due to its versatility and reliability, it's widely used in digital clocks, frequency counters, and digital meters.
Equivalent
The SN74LS90N is a decade counter, and its equivalent products include:
1. CD4017 - A popular CMOS decade counter.
2. SN74HC90 - Another variant in the 74 series with CMOS technology.
3. CD4026 - A decade counter with display driver capabilities.
4. HEF4026B - A similar counter with integrated display drivers.
These alternatives perform similar counting functions but may differ in technology, voltage, and package specifications.
1. CD4017 - A popular CMOS decade counter.
2. SN74HC90 - Another variant in the 74 series with CMOS technology.
3. CD4026 - A decade counter with display driver capabilities.
4. HEF4026B - A similar counter with integrated display drivers.
These alternatives perform similar counting functions but may differ in technology, voltage, and package specifications.
Features
The SN74LS90N is a 4-bit decade counter from Texas Instruments. Key features include:
1. Functionality: It can perform divide-by-2 and divide-by-5 counting for decade counter applications.
2. Configuration: Comprises a 4-bit binary counter with asynchronous clear and set functionalities.
3. Low Power Consumption: Utilizes TTL (Transistor-Transistor Logic) technology for efficient power usage.
4. High Speed: Offers fast counting capabilities suitable for a variety of applications.
5. Cascadable: Multiple counters can be connected to extend the counting range.
6. Operating Voltage: Typically operates at a 5V supply.
7. Output: Provides TTL-compatible output levels.
8. Package Type: Comes in a 14-pin dual in-line package (DIP) for ease of use in circuit designs.
9. Applications: Suitable for use in digital clocks, frequency division, event counting, and timer applications.
These features make the SN74LS90N versatile for use in various digital counting and timing applications.
1. Functionality: It can perform divide-by-2 and divide-by-5 counting for decade counter applications.
2. Configuration: Comprises a 4-bit binary counter with asynchronous clear and set functionalities.
3. Low Power Consumption: Utilizes TTL (Transistor-Transistor Logic) technology for efficient power usage.
4. High Speed: Offers fast counting capabilities suitable for a variety of applications.
5. Cascadable: Multiple counters can be connected to extend the counting range.
6. Operating Voltage: Typically operates at a 5V supply.
7. Output: Provides TTL-compatible output levels.
8. Package Type: Comes in a 14-pin dual in-line package (DIP) for ease of use in circuit designs.
9. Applications: Suitable for use in digital clocks, frequency division, event counting, and timer applications.
These features make the SN74LS90N versatile for use in various digital counting and timing applications.
Pinout
The SN74LS90N is a 4-bit binary counter integrated circuit, commonly used in digital electronics. It features a dual-modulus configuration, allowing it to count from 0 to 9 (decade counter) or 0 to 15 (binary counter), depending on its configuration.
The SN74LS90N comes in a 14-pin Dual In-line Package (DIP). Here is a brief description of its pin functions:
1. Pin 1 (GND): Ground
2. Pin 2 (R1): Reset input
3. Pin 3 (R2): Reset input
4. Pin 4 (Q1): Flip-Flop 1 output
5. Pin 5 (Q2): Flip-Flop 2 output
6. Pin 6 (Q3): Flip-Flop 3 output
7. Pin 7 (Q4): Flip-Flop 4 output
8. Pin 8 (VCC): Supply voltage
9. Pin 9 (CP1): Clock input 1
10. Pin 10 (CP0): Clock input 0
11. Pin 11 (MR1): Master reset input
12. Pin 12 (MR2): Master reset input
13. Pin 13 (NC): No connection
14. Pin 14 (NC): No connection
The counter's operation is controlled by the clock inputs and reset pins, allowing it to cycle through its counting sequence.
The SN74LS90N comes in a 14-pin Dual In-line Package (DIP). Here is a brief description of its pin functions:
1. Pin 1 (GND): Ground
2. Pin 2 (R1): Reset input
3. Pin 3 (R2): Reset input
4. Pin 4 (Q1): Flip-Flop 1 output
5. Pin 5 (Q2): Flip-Flop 2 output
6. Pin 6 (Q3): Flip-Flop 3 output
7. Pin 7 (Q4): Flip-Flop 4 output
8. Pin 8 (VCC): Supply voltage
9. Pin 9 (CP1): Clock input 1
10. Pin 10 (CP0): Clock input 0
11. Pin 11 (MR1): Master reset input
12. Pin 12 (MR2): Master reset input
13. Pin 13 (NC): No connection
14. Pin 14 (NC): No connection
The counter's operation is controlled by the clock inputs and reset pins, allowing it to cycle through its counting sequence.
Manufacturer
The SN74LS90N is manufactured by Texas Instruments (TI), a global semiconductor company. Texas Instruments is renowned for its development and production of a wide range of semiconductor technologies, including analog chips and embedded processors. TI's products are used in a variety of applications across diverse sectors, such as automotive, industrial, personal electronics, and communications equipment. The company is known for its innovation and leadership in the field of electronics, consistently delivering high-quality and reliable semiconductor solutions to meet the needs of its customers.
Application
The SN74LS90N is a decade counter IC, primarily used in digital circuits for counting applications. Its main application areas include frequency division, digital clocks, timers, and event counters. It is often used in combination with other counters for dividing frequency inputs and generating time delays. Additionally, it can be implemented in simple digital displays to count and display numbers, leveraging its ability to count from 0 to 9. The SN74LS90N is also used in sequence counters and as a part of larger digital systems needing precise counting and timing functionalities.
Package
The SN74LS90N is a binary decade counter IC with a 14-pin dual in-line package (DIP). It is commonly used in digital circuits for counting applications.
