UCC5686, UCC5687

27-LINE 3V - 5V LVD TERMINATOR FOR WIDE ULTRA2, ULTRA3,

ULTRA160, AND ULTRA320 SCSI WITH INTEGRATED SPI3 DELAY

SLUS459B – OCTOBER 2000 – REVISED APRIL 2001

2

POST OFFICE BOX 655303

block diagram

UDG-00123

48

*DISCNCT1

12

LVD

9

REG

22

L1–

21

L1+

5

L27–

6

L27+

+56mV

SOURCE/SINK

REGULATOR

0.6V

2.15 V

52

52

52

52

125

SE

HPD

39

125

REF

1.25V

REF 1.3V

40

DIFSENS

1.3V +/– 0.1V

DIFFB

47

*DISCNCT2

L10

L27

L1

L9

7

8

STRMPWR

PTRMPWR

10

11

SGND

PGND

*FOR THE UCC5687 PIN 47 IS DISCNCT1 AND PIN 48 IS DISCNCT2.

–

+

+

–

–

+

+

–

+56mV

+56mV

+56mV

+

+

SE

LVD

HVD

DISCNCT

OPEN

DOWN

OPEN

OPEN

MODE

ALL SWITCHES

–15mA ≤ ISOURCE ≤ –5mA

50µA ≤ ISINK ≤ 200 µ A

100 ms TO

300 ms

DELAY/

FILTER

6 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Signal line input voltage

0 V to 5 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Regulator output current

0.75 A

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–55

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–55

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature (soldering, 10 seconds)

300

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

‡ Unless otherwise indicated, voltages are reference to ground and currents are positive into and negative out of the specified terminals. Consult

Packaging Section of the Interface Products Data Book (TI Literature Number SLUD002) for thermal limitations and considerations of packages.

All voltages are referenced to GND.