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LT1719CS6 Datasheet(PDF) 12 Page - Linear Technology

Part # LT1719CS6
Description  4.5ns Single/Dual Supply 3V/5V Comparator with Rail-to-Rail Output
PDF  20 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1719CS6 Datasheet(HTML) 12 Page - Linear Technology

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LT1719
APPLICATIONS INFORMATION
5V
5V
180
Ω
DO NOT USE FOR LT1719
LEVEL TRANSLATION. SEE TEXT
270
Ω
820
Ω
10KH/E
R2
+VS or V
+
R3
R1
10KH/E
100K/E
+VS OR V
+
5V OR 5.2V
4.5V
R1
510
Ω
620
Ω
R2
180
Ω
180
Ω
R3
750
Ω
510
Ω
(a) STANDARD TTL TO PECL TRANSLATOR
(b) LT1719 OUTPUT TO PECL TRANSLATOR
LSTTL
LT1719
R2
VECL
3V
R3
R4
R1
10KH/E
100K/E
VECL
5V OR 5.2V
4.5V
R1
300
Ω
330
Ω
R2
180
Ω
180
Ω
R3
OMIT
1500
Ω
(c) 3V LT1719 OUTPUT TO PECL TRANSLATOR
LT1719
R4
560
Ω
1000
Ω
R4
VECL
+VS or V
+
R3
1719 F06
R2
R1
ECL FAMILY
10KH/E
VECL
– 5.2V
R1
560
Ω
270
Ω
+VS OR V
+
5V
3V
R2
270
Ω
510
Ω
R3
330
Ω
300
Ω
(d) LT1719 OUTPUT TO STANDARD ECL TRANSLATOR
LT1719
R4
1200
Ω
330
Ω
100K/E
– 4.5V
680
Ω
330
Ω
5V
3V
270
Ω
390
Ω
300
Ω
270
Ω
1500
Ω
430
Ω
Figure 6
Interfacing the LT1719 to ECL
The LT1719 comparators can be used in high speed
applications where Emitter-Coupled Logic (ECL) is de-
ployed. To interface the output of the LT1719 to ECL logic
inputs, standard TTL/CMOS to ECL level translators such
as the 10H124, 10H424 and 100124 can be used. These
components come at a cost of a few nanoseconds addi-
tional delay as well as supply currents of 50mA or more,
and are only available in quads. A faster, simpler and lower
power translator can be constructed with resistors as
shown in Figure 6.



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