SCG4503 Datasheet, PDF (4/16 Pages) Connor-Winfield Corporation – Synchronous Clock Generator

Table 4
Input And Output Characteristics
Symbol
Parameter
Minimum
Nominal
Maximum
CMOS Input and Output Characteristics
V_ih
High Level Input Voltage
V_il
Low Level Input Voltage
T
I/O to Output Valid
io
C_l
Output Capacitance
V_oh
High Level Output Voltage
V_ol
Low Level Output Voltage
T_ir
Input Reference Pulse Width
PECL Output Characteristics
V
High Level PECL Voltage
oh
V_ol
Low Level PECL Voltage
C_l
Output Capacitance
T
skew
Differential Output Skew
2.0
0.0
-
-
2.4
-
12.5
2.27
1.49
-
-
-
-
-
-
-
-
-
2.34
1.51
-
50
5.5
0.8
10
10
-
0.4
-
2.52
1.68
10
-
Units
V
V
ns
pF
V
V
ns
V
V
pF
ps
Notes
Table 5
Input Selection / Output Response
INPUTS
RESET
ENABLE SEL_AB
REF_A
REF_B
FR
1
0
X
X
X
X
X
1
X
X
X
X
0
0
X
X
X
1
0
0
0
A
A
0
0
0
1
A
A
0
0
0
0
NA
A
0
0
0
1
NA
A
0
0
0
1
A
NA
0
0
0
0
A
NA
0
0
0
X
NA
NA
0
OUTPUTS
NOTE
FR _status
ALARM Q
QN
1
X
X
X
FR
X
X
0
1
1
X
X
X
FR
0
0
X
X
RA
0
0
X
X
RB
0
1
X
X
U
0
0
X
X
RB
0
1
X
X
U
0
0
X
X
RA
1
1
X
X
FR
NOTES:
A Active
FR Free Run Mode
NA Not Active
RA Locked to Reference A
RB Locked to Reference B
U Unstable (due to conditions shown, switch to active reference or Free Run)
X Don’t care
Data Sheet #: SG082 Page 4 of 16 Rev: 00 Date: 06/17/05
© Copyright 2005 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice