SN75970B

SCSI DIFFERENTIAL CONVERTER-CONTROL

SLLS323A – NOVEMBER 1999 – REVISED JANUARY 2000

7

POST OFFICE BOX 655303

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted) (Continued)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

A side

–6

–9

mA

DSENS, RESET,

RSTFLTR

VIL = 0.8 V

– 100

IIL

Low-level input current

CLK40, X1/CLK20

IL

±30

IIL

Low-level in ut current

TEST

±30

µA

TIMEOUT

TEST at 2 V, A side and other

control inputs at 0.8 V,

B side open,

VIL = 0.8 V

±25

IOS

Short circuit output current

B side

VO = 5 V and 0 V

±250

mA

Disabled

RESET at 0.8 V, All others open

32

42

ICC

Supply current

All A-side to B-side

channels enabled

TEST and RSTFLTR at 2 V

RESET at 0.8 V,

All other inputs open, No load

72

95

mA

All B-side to A-side

channels enabled

TEST and B+ pins at 2 V, RESET,

RSTFLTR, and B– pins at 0.8 V,

All other inputs open, No load

51

72

Co

Bus output capacitance

B side to GND,

VI = 0.6 sin(2π 106 t)+ 1.5 V

18

21

pF

C d

Power dissipation capacitance (see Note 3)

B side to A side, one channel

40

pF

Cpd

Power dissipation capacitance (see Note 3)

A side to B side, one channel

100

pF

† All typical values are at VCC = 5 V, TA = 25°C.

NOTE 3: Cpddeterminestheno-loaddynamiccurrentconsumption,IS = Cpd × VCC × f + ICC (ICC depends upon the output states and load circuits

and is not necessarily the same ICC as specified in the electrical tables).