ECL-to-TTL DC Electrical Characteristics
V
EE = −4.2V to −5.7V, VCC = VCCA = GND, TC = 0°C to +85°C, CL = 50 pF, VTTL = +4.5V to +5.5V (Note 8)
Symbol
Parameter
Min
2.7
2.4
Typ
3.1
2.9
0.3
Max
Units
Conditions
OH = −3 mA, VTTL = 4.75V
OH = −3 mA, VTTL = 4.50V
OL = 24 mA, VTTL = 4.50V
VOH
Output HIGH Voltage
V
I
I
I
V
VOL
VIH
Output LOW Voltage
Input HIGH Voltage
0.5
V
−1165
−1830
−870
mV
Guaranteed HIGH Signal
for All Inputs
VIL
Input LOW Voltage
−1475
350
mV
Guaranteed LOW Signal
for All Inputs
IIH
Input HIGH Current
Input LOW Current
3-STATE Current
Output HIGH
µA
µA
µA
VIN = VIH (Max)
VIN = VIL (Min)
VOUT = +2.7V
IIL
0.50
IOZHT
70
IOZLT
3-STATE Current
Output LOW
−700
−225
µA
V
OUT = +0.5V
IOS
Output Short-Circuit
Current
−100
mA
VOUT = 0.0V, VTTL = +5.5V
ITTL
VTTL Supply Current
74
49
67
mA
mA
mA
TTL Outputs LOW
TTL Outputs HIGH
TTL Outputs in 3-STATE
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, VTTL = +4.5V to +5.5V, VCC = VCCA = GND
T
C = 0°C
T
C = 25°C
TC = 85°C
Symbol
Parameter
Units
Conditions
Min
350
1.7
Max
Min
350
1.7
Max
3.7
4.4
4.5
4.3
Min
350
1.9
Max
3.9
4.8
4.6
4.5
fMAX
tPLH
tPHL
tPZH
Max Toggle Frequency
CP to En
MHz
ns
3.6
4.2
4.5
4.3
Figures 1, 2
OE to En
1.3
1.5
1.6
1.5
1.6
1.6
1.7
1.6
1.7
ns
ns
ns
Figures 1, 2
Figures 1, 2
Figures 1, 2
(Cutoff to HIGH)
OE to En
tPHZ
(HIGH to Cutoff)
DIR to En
tPHZ
(HIGH to Cutoff)
Tn to CP
tSET
1.1
1.7
2.1
0.6
1.1
1.7
2.1
0.6
1.1
1.9
2.1
0.6
ns
ns
ns
ns
Figures 1, 2
Figures 1, 2
Figures 1, 2
Figures 1, 2
tHOLD
tPW(H)
tTLH
Tn to CP
Pulse Width CP
Transition Time
20% to 80%, 80% to 20%
1.6
1.6
1.6
tTHL
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