CA3081N - Common Emitter Array

Overview

The CA3081N is a monolithic integrated circuit featuring a common emitter array of seven NPN transistors. Manufactured by Intersil Corporation, this component is designed for driving seven-segment incandescent displays and light-emitting diode (LED) displays. The CA3081N is part of a series that includes the CA3082 (common collector array), providing flexibility for various applications requiring high-current switching or amplification. The device is housed in a ceramic dual-in-line frit seal package (CERDIP), ensuring reliable performance in demanding environments.

The CA3081N is characterized by its ability to handle high collector currents (up to 100mA maximum) while maintaining low saturation voltage, making it suitable for display driving and other switching applications. Its seven-transistor configuration allows for versatile use in both common emitter and common collector setups, depending on the specific requirements of the circuit.

Features

• Common Emitter Array: The CA3081N provides seven NPN transistors in a common emitter configuration, enabling efficient current sinking for display applications.
• High Collector Current: Capable of handling up to 100mA (maximum) per transistor, making it suitable for driving incandescent and LED displays.
• Low Saturation Voltage: Typical V_CE(SAT) of 0.4V at 50mA ensures minimal power loss during switching operations.
• Versatile Configuration: The seven-transistor array allows for a wide range of applications, including relay control and thyristor firing.
• Robust Packaging: Housed in a CERDIP package for enhanced durability and thermal performance.

Applications

The CA3081N is widely used in applications requiring high-current switching or display driving. Key applications include:

• Display Drivers: Directly drives seven-segment incandescent displays and LED displays, providing efficient current sinking for each segment.
• Relay Control: The high collector current capability makes it suitable for driving relays in industrial and automotive systems.
• Thyristor Firing: Used in circuits requiring precise thyristor triggering, such as power control systems.
• General-Purpose Switching: The transistor array can be employed in various switching applications where multiple high-current switches are needed.

Electrical Characteristics

The following table summarizes the key electrical characteristics of the CA3081N under typical operating conditions (unless otherwise specified):

Absolute Maximum Ratings

• Collector-Emitter Voltage (V_CEO): 30V
• Collector Current (I_C): 100mA (max per transistor)
• Total Device Power Dissipation (P_D): 600mW
• Operating Temperature Range: -55°C to +125°C

Typical Performance Characteristics

• Collector-Emitter Saturation Voltage (V_CE(SAT)): 0.4V (typical at I_C = 50mA)
• DC Current Gain (h_FE): 50 (minimum at I_C = 10mA, V_CE = 1V)
• Input Voltage (V_BE(SAT)): 1.2V (typical at I_C = 50mA)

Package Information

The CA3081N is available in a 16-pin ceramic dual-in-line frit seal package (CERDIP). The package is designed for high reliability and thermal performance, making it suitable for industrial and military applications.

Pin Configuration

The pinout for the CA3081N is as follows:

• Pin 1: Emitter of Transistor 1
• Pin 2: Base of Transistor 1
• Pin 3: Collector of Transistor 1
• Pin 4: Emitter of Transistor 2
• Pin 5: Base of Transistor 2
• Pin 6: Collector of Transistor 2
• Pin 7: Emitter of Transistor 3
• Pin 8: Base of Transistor 3
• Pin 9: Collector of Transistor 3
• Pin 10: Emitter of Transistor 4
• Pin 11: Base of Transistor 4
• Pin 12: Collector of Transistor 4
• Pin 13: Emitter of Transistor 5
• Pin 14: Base of Transistor 5
• Pin 15: Collector of Transistor 5
• Pin 16: Common Collector (for CA3082) / Not Connected (for CA3081)

Mechanical Dimensions

The CERDIP package dimensions are as follows:

• Length: 19.94mm (max)
• Width: 6.35mm (max)
• Height: 4.57mm (max)
• Lead Pitch: 2.54mm

Ordering Information

The CA3081N is available in various temperature ranges and packaging options. Refer to the table below for ordering details:

• CA3081N: Standard commercial temperature range (0°C to +70°C)
• CA3081NE: Extended temperature range (-55°C to +125°C)

Notes and Disclaimers

Intersil Corporation reserves the right to make changes to circuit design and specifications without notice. Users are advised to verify the latest datasheet before placing orders. No responsibility is assumed by Intersil for the use of this component or any infringement of patents resulting from its application. For the most current information, visit www.intersil.com.