I
I
V
+5 V
1
2
3
4
8
7
6
5
CC
V
= 5 V
t
t
CC
I = 7.5 mA
RISE
FALL
B
A
I
0.1 µF
BYPASS
350 Ω
OUTPUT V
O
R
= 4 kΩ
= 1 kΩ
300
290
60
L
MONITORING
NODE
R
L
GND
40
V
CM
+
–
R
R
= 350 Ω
L
20
0
PULSE
GENERATOR
= 50 Ω
= 350 Ω, 1 kΩ, 4 kΩ
L
0
Z
O
-60 -40 -20
20 40 60 80 100
V
(PEAK)
CM
SWITCH AT A: I = 0 mA
T
– TEMPERATURE – °C
A
V
CM
0 V
5 V
I
CM
H
V
O
Figure 12. Typical Rise and Fall Time
vs. Temperature.
V
(MIN.)
O
SWITCH AT B: I = 7.5 mA
I
V
(MAX.)
O
V
O
0.5 V
CM
L
Figure 13. Test Circuit for Common Mode Transient Immunity and Typical
Waveforms.
GND BUS (BACK)
V
BUS (FRONT)
NC
V
V
= 5.0 V
CC
CC
= 0.6 V
5
4
3
O
ENABLE
(IF USED)
0.1µF
R
= 350 Ω
L
2
1
0
NC
NC
OUTPUT 1
R
R
= 1 kΩ
= 4 kΩ
L
L
ENABLE
(IF USED)
0.1µF
-60 -40 -20
0
20 40 60 80 100
T
– TEMPERATURE – °C
A
NC
OUTPUT 2
Figure 14. Typical Input Threshold
Current vs. Temperature.
10 mm MAX.
(SEE NOTE 1)
Figure 15. Recommended Printed Circuit Board Layout.
1-324
HP [ HEWLETT-PACKARD ]
