CS212
Electrical Characteristics: T
A
= 25¡C, unless otherwise specified.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Turn-On Time For
Line Output Driver
Turn-Off Time For
Line Output Driver
Line Voltage VL (Note 1)
Loop Current IN2, IN3
Alarm Condition IN2-IN3
Loop Open
Alarm Condition IN2-IN3
Loop Shorted
0
0.1
1
5
1.0
1.0
28
0.5
5
30
µs
µs
V
mA
k�½
k�½
Note 1: The circuit shall function in the correct way only between 0 and 18V
DC
. Data driver must not turn on when line voltage is above 18V.
Package Pin Description
PACKAGE PIN #
PIN SYMBOL
FUNCTION
1
2
3
4
5
6
7
8
9
10
11
OUT0
A4
A3
A2
A1
A0
IN1
IN0
LINE
Gnd
DATA
OUT
Output (open collector) from S-ART.
Address input. Must be connected to V
DD
or Gnd according to the
relevant address code.
Address input. Must be connected to V
DD
or Gnd according to the
relevant address code.
Address input. Must be connected to V
DD
or Gnd according to the
relevant address code.
Address input. Must be connected to V
DD
or Gnd according to the
relevant address code.
Address input. Must be connected to V
DD
or Gnd according to the
relevant address code.
Input to S-ART.
Input to S-ART.
Signal lead in the line cable.
Zero lead in the line cable.
Output from the S-ART, which is active in the READ-mode.
Transmits data from
S-ART to line.
Supply voltage to the S-ART. The voltage is derived from the line
signal.
Sabotage surveilled loop (shorting and breaking).
Sabotage surveilled loop (shorting and breaking).
Data Set Ready. Output (open collector) from the S-ART which is
active during WRITE-mode, when OUT0 and OUT1 change.
Output (open collector) from S-ART.
12
13
14
15
16
V
DD
IN3
IN2
DSR
OUT1
3
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
