Datasheet


    
SLLS363A − SEPTEMBER 1999 − REVISED NOVEMBER 2000
11
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of operating conditions (unless otherwise
noted)
driver
PARAMETER TEST CONDITION MIN TYP MAX UNIT
V
OD
Differential output voltage 56 Ω load, See Figure 1 172 265 mV
I
DIFF
Driver difference current, TPA+, TPA−, TPB+, TPB− Driver enabled, speed signaling off −1.05
†
1.05
†
mA
I
SP200
Common mode speed signaling current, TPB+, TPB−
S200 speed signaling enabled −4.84
‡
−2.53
‡
mA
I
SP400
Common mode speed signaling current, TPB+, TPB−
S400 speed signaling enabled −12.4
‡
−8.10
‡
mA
V
OFF
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
Z
ID
Differential impedance
Driver disabled
10 14 kΩ
Z
ID
Differential impedance Driver disabled
4 pF
Z
IC
Common mode impedance
Driver disabled
20 kΩ
Z
IC
Common mode impedance Driver disabled
24 pF
V
TH−R
Receiver input threshold voltage Drivers disabled −30 30 mV
V
TH−CB
Cable bias detect threshold, TPBx cable inputs Driver disabled 0.6 1 V
V
TH+
Positive arbitration comparator threshold
voltage
Driver disabled 89 168 mV
V
TH−
Negative arbitration comparator threshold
voltage
Driver disabled −168 −89 mV
V
TH−SP200
Speed signal threshold
TPBIAS-TPA common mode voltage,
49 131
mV
V
TH−SP400
Speed signal threshold
TPBIAS-TPA common mode voltage,
drivers disabled
314 396
mV