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UDx2981, A2981, UDx2982, A2982
8-Channel Source Drivers

Features

• TTL, DTL, PMOS, or CMOS compatible inputs
• 500 mA output source current capability
• Transient-protected outputs
• Output breakdown voltage to 50 V
• DIP or SOIC packaging

Description

Recommended for high-side switching applications that benefit from separate logic and load grounds, these devices encompass load supply voltages to 50 V and output currents to -500 mA. These 8-channel source drivers are useful for interfacing between low-level logic and high-current loads. Typical loads include relays, solenoids, lamps, stepper and/or servo motors, print hammers, and LEDs.

All devices may be used with 5 V logic systems ¡ª TTL, Schottky TTL, DTL, and 5 V CMOS. The device packages offered are electrically interchangeable, and will withstand a maximum output off voltage of 50 V, and operate to a minimum of 5 V. All devices in this series integrate input current limiting resistors and output transient suppression diodes, and are activated by an active high input.

The suffix ¡°A¡± indicates an 18-lead plastic dual in-line package with copper lead frame for optimum power dissipation. Under normal operating conditions, these devices will sustain 120 mA continuously for each of the eight outputs at an ambient temperature of +50¡ãC and a supply of 15 V.

The suffix ¡°LW¡± package is provided in a 20-pin wide-body SOIC package with improved thermal characteristics compared to the 18-pin SOIC version it replaces (100% pin-compatible electrically). The A2982ELW driver is available for operation over an extended temperature range, down to -40¡ãC.

These packages are lead (Pb) free, with 100% matte-tin leadframe plating.

Typical Application

Functional Block Diagram