TSB41LV06

IEEE 1394a SIX-PORT CABLE TRANSCEIVER/ARBITER

SLLS289 – JANAURY1999

10

POST OFFICE BOX 655303

electrical characteristics over recommended ranges of operating conditions (unless otherwise

noted)

driver

PARAMETER

TEST CONDITION

MIN

TYP

MAX

UNIT

VOD

Differential output voltage

56

Ω load, See Figure 1

172

265

mV

IDIFF

Driver difference current, TPA+, TPA–, TPB+, TPB–

Driver enabled, speed signaling off

–1.05†

1.05†

mA

ISP

Common mode speed signaling current, TPB+, TPB–

S200 speed signaling enabled

–4.84‡

–2.53‡

mA

ISP

Common mode speed signaling current, TPB+, TPB–

S400 speed signaling enabled

–12.4‡

–8.10‡

mA

VOFF Off state differential voltage

Drivers disabled, See Figure 1

20

mV

† Limits defined as algebraic sum of TPA+ and TPA– driver currents. Limits also apply to TPB+ and TPB– algebraic sum of driver currents.

‡ Limits defined as absolute limit of each of TPB+ and TPB– driver currents.

receiver

PARAMETER

TEST CONDITION

MIN

TYP

MAX

UNIT

ZID

Differential impedance

Driver disabled

10

14

k

Ω

ZID

Differential impedance

Driver disabled

4

pF

ZIC

Common mode impedance

Driver disabled

20

k

Ω

ZIC

Common mode impedance

Driver disabled

24

pF

VTH–R

Receiver input threshold voltage

Drivers disabled

–30

30

mV

VTH–CB

Cable bias detect threshold, TPBx cable inputs

Driver disabled

0.6

1

V

VTH+

Positive arbitration comparator threshold

voltage

Driver disabled

89

168

mV

VTH–

Negative arbitration comparator threshold

voltage

Driver disabled

–168

–89

mV

VTH–SP200

Speed signal threshold

TPBIAS-TPA common mode voltage,

49

131

mV

VTH–SP400

Speed signal threshold

g

drivers disabled

314

396

mV