AC Characteristics
Sym
f
EC
f
ESC
t
ECR
t
ECF
f
ED
t
MR
t
E
1
t
E
2
t
E
3
t
E
4
t
E
5
t
E
6
t
E
7
t
E
8
t
E
9
Parameter
Encoder clock frequency
Send clock frequency
Encoder clock rise time
Encoder clock fall time
Data rate
Master reset pulse width
Shift clock delay
Serial data setup time
Serial data hold time
Enable setup time
Enable pulse width
Sync setup time
Sync pulse width
Send data delay
Bipolar output delay
Min
0
0
-
-
0
150
-
75
75
90
100
55
150
0
-
Limits
Max
15
2.5
8
8
1.25
-
125
-
-
-
-
-
-
50
130
Units
MHz
MHz
ns
ns
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Figure 7: Encoder Electrical
Characteristics
1. V
DD
= 5V ±10%, over full operating temperature range. 2. C
L
=50pF.
Sym
f
DC
t
DCR
t
DCF
f
DD
t
DR
t
DRS
t
MR
t
D
1
t
D
2
t
D
3
t
D
4
t
D
5
t
D
6
t
D
7
t
D
8
t
D
9
t
D
10
t
D
11
Parameter
Decoder clock frequency
Decoder clock rise time
Decoder clock fall time
Data rate
Decoder reset pulse width
Decoder reset setup time
Master reset pulse width
Bipolar data pulse width
Sync transition span
One-Zero overlap
Short data transition span
Long data transition span
Sync delay (on)
Take data delay (on)
Serial data out delay
Sync delay (off)
Take data delay (off)
Valid word delay
Limits
Min
0
-
-
0
150
75
150
t
DC
+ 10
-
-
-
-
-20
0
-
0
0
0
Typ
-
-
-
-
-
-
-
-
18t
DC
-
6t
DC
12t
DC
-
-
-
-
-
-
Max
15
8
8
1.25
-
-
-
-
-
t
DC
- 10
-
-
110
110
80
110
110
110
Units
MHz
MHz
ns
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Figure 8: Decoder Electrical
Characteristics
1. V
DD
= 5V ±10%, over full operating temperature range. 2. C
L
=50pF.
3. t
DC
= Decoder clock period = 1/f
DC
Aeroflex Circuit Technology
5
SCD15530 REV B 7/28/99 Plainview NY (516) 694-6700
AEROFLEX [ AEROFLEX CIRCUIT TECHNOLOGY ]
