DS3680 Datasheet, PDF (1/6 Pages) National Semiconductor (TI) – Quad Negative Voltage Relay Driver

March 1995
DS3680 Quad Negative Voltage Relay Driver
General Description
The DS3680 is a quad high voltage negative relay driver
designed to operate over wide ranges of supply voltage
common-mode voltage and ambient temperature with
50 mA sink capability These drivers are intended for switch-
ing 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 be-
tween logic ground and negative supply ground in many ap-
plications these drivers are designed to operate with a high
common-mode range (g20V referenced to negative supply
ground) Each driver has a common-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 compatible 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 aIN
input or both inputs are open the driver will be OFF
Features
Y b_{10V to} b_{60V operation}
Y _{Quad 50 mA sink capability}
Y _{TTL LS COMS or voltage comparator input}
Y _{High input common-mode voltage range}
Y _{Very low input current}
Y _{Fail-safe disconnect feature}
Y _{Built-in output clamp diode}
Connection Diagram
Logic Diagram
Dual-In-Line Package
Top View
TL F 5821 – 1
Order Number DS3680J DS3680M or DS3680N
See NS Package Number J14A M14A N14A
Truth Table
Differential Inputs
V_ID ^t 2V
V_ID ^s 0 8V
Open
Outputs
On
Off
Off
TL F 5821 – 2
C1995 National Semiconductor Corporation TL F 5821
RRD-B30M105 Printed in U S A