The "AM26LS31CNSR" is a model number for a Quad Differential Line Driver manufactured by Texas Instruments, part of the AM26LS31 series. The device is used in various digital communication systems, particularly where high-speed, differential line-driving capabilities are needed.
Key Specifications:
Package Type: The AM26LS31CNSR comes in a 14-pin SOIC (Small Outline Integrated Circuit) package. Function: This device consists of four differential line drivers, commonly used in signaling systems for RS-422 and RS-485 communications.Pin Function Specifications:
The AM26LS31 comes in a 14-pin package, and the pin functions are as follows:
Pin Number Pin Name Pin Function Description 1 A1 Non-inverting input for the first driver. 2 B1 Inverting input for the first driver. 3 Y1 Output for the first driver. 4 GND Ground connection. 5 A2 Non-inverting input for the second driver. 6 B2 Inverting input for the second driver. 7 Y2 Output for the second driver. 8 Vcc Power supply connection (typically +5V). 9 A3 Non-inverting input for the third driver. 10 B3 Inverting input for the third driver. 11 Y3 Output for the third driver. 12 A4 Non-inverting input for the fourth driver. 13 B4 Inverting input for the fourth driver. 14 Y4 Output for the fourth driver.Packaging:
The AM26LS31CNSR is provided in a 14-pin SOIC (Small Outline Integrated Circuit) package. This package type is commonly used for surface-mount devices (SMD) and provides a compact and efficient solution for high-speed line drivers.
FAQ (Frequently Asked Questions) for AM26LS31CNSR:
What is the AM26LS31CNSR used for? The AM26LS31CNSR is a quad differential line driver, typically used in RS-422 and RS-485 communication systems.
What is the voltage range for the AM26LS31CNSR? The typical supply voltage for the AM26LS31CNSR is 5V, with a recommended range of 4.5V to 5.5V.
What is the logic level for the inputs of the AM26LS31CNSR? The inputs to the AM26LS31CNSR are TTL compatible, meaning it can accept 0V to 2V for a logic low and 3V to 5V for a logic high.
What is the output voltage range for the AM26LS31CNSR? The output voltage can range from 0V (low) to nearly the supply voltage (5V high), depending on the load and other conditions.
What is the difference between the A and B pins on the AM26LS31CNSR? The A pins are the non-inverting inputs, and the B pins are the inverting inputs for each driver channel. These pins form the differential pair for the outputs.
What is the maximum data rate supported by the AM26LS31CNSR? The AM26LS31CNSR is capable of supporting data rates up to 10 Mbps, depending on the load and the application environment.
Can the AM26LS31CNSR drive long cables? Yes, the AM26LS31CNSR is designed to drive differential signals over long distances, such as up to 4000 feet in RS-485 applications.
What type of cable is suitable for AM26LS31CNSR applications? For RS-485 communications, twisted pair cables are typically used to minimize electromagnetic interference ( EMI ).
What is the maximum output current of the AM26LS31CNSR? The AM26LS31CNSR is capable of sourcing or sinking up to 60mA of current per driver output.
Is the AM26LS31CNSR suitable for point-to-point communication? The AM26LS31CNSR is more commonly used in multipoint communication systems (such as RS-485), but it can be used for point-to-point communication in some cases.
What is the rise time of the AM26LS31CNSR? The typical rise time for the AM26LS31CNSR is 10ns when driving a 100Ω load.
What are the protections provided by the AM26LS31CNSR? The AM26LS31CNSR includes protection against over-voltage and short circuits, ensuring robustness in harsh conditions.
Can the AM26LS31CNSR be used in industrial applications? Yes, the AM26LS31CNSR is widely used in industrial applications where robust, high-speed differential signaling is required, such as in control systems and automation.
What is the output impedance of the AM26LS31CNSR? The output impedance of the AM26LS31CNSR is typically 100Ω in a differential configuration.
What happens if the inputs are left floating? If the inputs of the AM26LS31CNSR are left floating, the output may become undefined, and the driver could potentially drive an incorrect signal. It is recommended to tie unused inputs to ground or a logic level to avoid this.
Can the AM26LS31CNSR drive a single-ended load? The AM26LS31CNSR is designed for differential signaling, so it is not optimal for driving single-ended loads. For single-ended applications, another type of driver should be considered.
What temperature range can the AM26LS31CNSR operate in? The AM26LS31CNSR is designed to operate in the -40°C to +85°C temperature range, making it suitable for industrial environments.
What are the power supply decoupling recommendations for the AM26LS31CNSR? It is recommended to use decoupling capacitor s (e.g., 0.1µF) near the Vcc and GND pins to minimize noise and voltage spikes on the power supply lines.
How is the AM26LS31CNSR different from the AM26LS32? The AM26LS31 is a differential line driver, while the AM26LS32 is a differential line receiver. They perform complementary functions in communication systems.
What is the package type for the AM26LS31CNSR? The AM26LS31CNSR comes in a 14-pin SOIC (Small Outline Integrated Circuit) package, suitable for surface-mount soldering.
Summary:
The AM26LS31CNSR is a high-performance, quad differential line driver suitable for communication systems such as RS-422 and RS-485. With 14 pins and TTL compatibility, it drives differential signals efficiently and supports speeds up to 10 Mbps. The device's extensive application in industrial and digital communication systems makes it an essential component for robust, long-distance signaling.
