
www.fairchildsemi.com
4
1
ECL-to-TTL DC Electrical Characteristics
(Note 8)
V
EE
=
4.2V to
5.7V, V
CC
=
V
CCA
=
GND, T
C
=
0
°
C to
+
85
°
C, C
L
=
50 pF, V
TTL
=
+
4.5V to
+
5.5V
Symbol
Parameter
V
OH
Output HIGH Voltage
Note 8:
The specified limits represent the
“
worst case
”
value for the parameter. Since these values normally occur at the temperature extremes, additional
noise immunity and guardbanding can be achieved by decreasing the allowable system operating ranges. Conditions for testing shown in the tables are cho-
sen to guarantee operation under
“
worst case
”
conditions.
DIP TTL-to-ECL AC Electrical Characteristics
V
EE
=
4.2V to
5.7V, V
TTL
=
+
4.5V to
+
5.5V, V
CC
=
V
CCA
=
GND
DIP ECL-to-TTL AC Electrical Characteristics
V
EE
=
4.2V to
5.7V, V
TTL
=
+
4.5V to
+
5.5V, V
CC
=
V
CCA
=
GND, C
L
=
50.pF
Min
2.7
Typ
3.1
Max
Units
V
Conditions
I
OH
=
3 mA, V
TTL
=
4.75V
I
OH
=
3 mA, V
TTL
=
4.50V
I
OL
=
24 mA, V
TTL
=
4.50V
Guaranteed HIGH Signal for All Inputs
2.4
2.9
0.3
V
V
V
OL
V
IH
V
IL
I
IH
I
IL
I
OZHT
I
OZLT
I
OS
I
TTL
Output LOW Voltage
Input HIGH Voltage
0.5
870
1475
350
1165
1830
mV
Input LOW Voltage
Input HIGH Current
Input LOW Current
mV
μ
A
μ
A
μ
A
μ
A
mA
Guaranteed LOW Signal for All Inputs
V
IN
=
V
IH
(Max)
V
IN
=
V
IL
(Min)
V
OUT
=
+
2.7V
V
OUT
=
+
0.5V
V
OUT
=
0.0V, V
TTL
=
+
5.5V
TTL Outputs LOW
TTL Outputs HIGH
TTL Outputs in 3-STATE
0.50
3-STATE Current Output HIGH
3-STATE Current Output LOW
Output Short-Circuit Current
70
700
225
100
74
49
67
V
TTL
Supply Current
mA
mA
mA
Symbol
Parameter
T
C
=
0
°
C
Min
350
1.7
T
C
=
25
°
C
Min
350
1.7
T
C
=
85
°
C
Min
350
1.9
Units
Conditions
Max
Max
Max
f
MAX
t
PLH
t
PHL
t
PZH
Max Toggle Frequency
CP to E
n
MHz
ns
3.6
3.7
3.9
Figures 1, 2
OE to E
n
(Cut-off to HIGH)
OE to E
n
(HIGH to Cut-off)
DIR to E
n
(HIGH to Cut-off)
1.3
4.2
1.5
4.4
1.7
4.8
ns
Figures 1, 2
t
PHZ
1.5
4.5
1.6
4.5
1.6
4.6
ns
Figures 1, 2
t
PHZ
1.6
4.3
1.6
4.3
1.7
4.5
ns
Figures 1, 2
t
set
t
hold
t
pw
(H)
t
TLH
t
THL
T
n
to CP
T
n
to CP
Pulse Width CP
1.1
1.7
2.1
1.1
1.7
2.1
1.1
1.9
2.1
ns
ns
ns
Figures 1, 2
Figures 1, 2
Figures 1, 2
Transition Time
20% to 80%, 80% to 20%
0.6
1.6
0.6
1.6
0.6
1.6
ns
Figures 1, 2
Symbol
Parameter
T
C
=
0
°
C
Min
125
3.1
T
C
=
25
°
C
Min
125
3.1
T
C
=
85
°
C
Min
125
3.3
Units
Conditions
Max
Max
Max
f
MAX
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PHZ
t
PLZ
t
set
t
hold
t
pw
(H)
Max Toggle Frequency
CP to T
n
MHz
ns
7.2
7.2
7.7
Figures 3, 4
OE to T
n
(Enable Time)
3.4
3.8
8.45
9.2
3.7
4.0
8.95
9.2
4.0
4.3
9.7
9.95
ns
Figures 3, 5
OE to T
n
(Disable Time)
DIR to T
n
(Disable Time)
E
n
to CP
E
n
to CP
Pulse Width CP
3.2
3.0
2.7
8.95
7.7
8.2
3.3
3.4
2.8
8.95
8.7
8.7
3.5
4.1
3.1
9.2
9.95
8.95
ns
Figures 3, 5
ns
Figures 3, 6
2.8
1.1
2.1
7.45
3.1
1.1
2.1
7.95
4.0
1.1
2.6
9.2
ns
ns
Figures 3, 4
Figures 3, 4
4.1
4.1
4.1
ns
Figures 3, 4