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1720 查看數據表(PDF) - Linear Technology

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1720 Datasheet PDF : 28 Pages
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APPLICATIONS INFORMATION
5V
180
LSTTL 270
5V
DO NOT USE FOR LT1720/LT1721
LEVEL TRANSLATION. SEE TEXT
10KH/E
820
(a) STANDARD TTL TO PECL TRANSLATOR
VCC
1/2 LT1720
R2
R1
R3
VCC
R1 R2 R3
10KH/E 5V OR 5.2V 510180750
100K/E 4.5V 620180510
LT1720/LT1721
(b) LT1720/LT1721 OUTPUT TO PECL TRANSLATOR
VCC
3V
1/2 LT1720
R2
R1
R4
R3
VCC
R1 R2 R3 R4
10KH/E 5V OR 5.2V 300180OMIT 560
100K/E 4.5V 33018015001000
(c) 3V LT1720/LT1721 OUTPUT TO PECL TRANSLATOR
VCC
1/2 LT1720
R4
R1
R2 R3
VEE
(d) LT1720/LT1721 OUTPUT TO STANDARD ECL TRANSLATOR
ECL FAMILY VEE
10KH/E – 5.2V
100K/E – 4.5V
VCC R1 R2 R3 R4
5V 5602703301200
3V 270510300330
5V 6802703001500
3V 330390270430
1720/21 F05
Figure 5
11

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