ABSOLUTE MAXIMUM RATINGS

Supply voltage

Output current

Storage temperature range

Max. junction temperature

Max. clock input voltage

SP8720

300MHz4

4

4

4

4

3/4

DS3650-1·2

The SP8720 is an ECL two-modulus divider, with ECL10K

compatible outputs. It divides by 3 when either of the ECL control

inputs, PE1 or PE2, is in the high state and by 4 when both are low

(or open circuit). An AC coupled input of 600mVp-p is required.

FEATURES

QUICK REFERENCE DATA

2

55

°C to 1125°C (A Grade)

2

30

°C to 170°C (B Grade)

Fig. 1 Pin connections - top view

DG16

2

8V

20mA

2

65

°C to 1150°C

1

175

°C

2·5V p-p

ORDERING INFORMATION

SP8720 A DG

SP8720 B DG

5962-90577 (SMD)

Fig. 2 Functional diagram

CLOCK INPUT

PE1

PE2

NC

NC

NC

OUTPUT

INTERNAL BIAS DECOUPLING

NC

NC

NC

DO NOT CONNECT

NC

OUTPUT

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9







CONTROL

INPUTS

SP8720

D1

CK

Q1

D2

CK

Q2

PE1

PE2

CLOCK INPUT

OUTPUT

OUTPUT

2

3

1

5

12

8

9

INTERNAL BIAS

DECOUPLING

16

Q2

ADVANCE INFORMATION