Description
The DS3680 is a quad high voltage negative relay driver designed to operate over wide ranges of supply voltage mon-mode voltage and ambient temperature with 50 mA sink capability These drivers are intended for switching the ground end of loads which are directly connected to the negative supply such as in telephone relay systems Since there may be considerable noise and IR drop between logic ground and negative supply ground in many applications these drivers are designed to operate with a high mon-mode range ( g 20V referenced to negative supply ground) Each driver has a mon-mode range separate from the other drivers in the package which pemits input signals from more than one element of the system With low differential input current requirements (typically 100 mA) these drivers are patible with TTL LS and CMOS logic Differential inputs permit either inverting or non-inverting operation The driver outputs incorporate transient suppression clamp networks which eliminate the need for external networks when used in applications of switching inductive loads A fail-safe feature is incorporated to insure that if the a IN input or both inputs are open the driver will be OFF.
