© 2000 IMP, Inc.

Data Communications

9

Figure 23. Output Current Matching Channel to Channel

Typical Characteristics

1 2 3 4 5

6 7 8 9

10 11 12 13

14 15 16 17

18 19 20 21

22 23 24 25

i0

i2

i4

i6

i8

21

21.5

22

22.5

23

23.5

24

Part #

Channel

23.5 – 24

23 – 23.5

22.5 – 23

22 – 22.5

21.5 – 22

21 – 21.5

Figure 24. 8-Bit SCSI System Application

5V

2.2

µF

DISC1

DISC2

TERM POWER

IMP5218

V

TERM

TERMPWR

V

TERM

TERMPWR

IMP5218

DISC1

Note: Add third IMP5218 for 16-bit SCSI

DISC2

ATN

BSY

ACK

RST

MSG

DB (P)

DB (7)

DB (6)

DB (1)

DB (0)

HOST

PERIPHERAL

SCSI CABLE

ATN

BSY

ACK

RST

MSG

TERMPWR

DB (P)

DB (7)

DB (6)

DB (1)

DB (0)

TERM POWER

V

TERM

IMP5218

TERMPWR

V

TERM

IMP5218

DISC2

DISC1

DISC2

DISC1

2.2

µF

5V

IMP5

IMP52