LT1720 Linear Technology, LT1720 Datasheet - Page 11

• Manufacturer Part Number: LT1720
• Description: 4ns/ 150MHz Dual Comparator with Independent Input/Output Supplies
• Manufacturer: Linear Technology

APPLICATIONS
(a) STANDARD TTL TO PECL TRANSLATOR
(b) LT1720/LT1721 OUTPUT TO PECL TRANSLATOR
(c) 3V LT1720/LT1721 OUTPUT TO PECL TRANSLATOR
(d) LT1720/LT1721 OUTPUT TO STANDARD ECL TRANSLATOR
U
1/2 LT1720
1/2 LT1720
1/2 LT1720
LSTTL
V
3V
INFORMATION
CC
U
5V
180
270
820
R1
R4
R4
R1
W
V
CC
R1
V
R2
R3
CC
5V
R2
R3
R2
10KH/E
R3
U
DO NOT USE FOR LT1720/LT1721
LEVEL TRANSLATION. SEE TEXT
V
EE
10KH/E
100K/E
10KH/E
100K/E
Figure 5
5V OR 5.2V
ECL FAMILY
5V OR 5.2V
4.5V
V
10KH/E
100K/E
CC
4.5V
V
CC
510
620
R1
– 5.2V
– 4.5V
300
330
V
R1
EE
180
180
R2
180
180
R2
V
5V
3V
5V
3V
CC
750
510
R3
1500
OMIT
560
270
680
330
R3
R1
1000
560
270
510
270
390
R4
R2
330
300
300
270
LT1720/LT1721
R3
1200
1500
330
430
1720/21 F05
R4
11