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14−5
14.4 Electrical Characteristics Over Recommended Ranges of Operating Conditions
(unless otherwise noted)
14.4.1 Device
PARAMETER TEST CONDITION MIN MAX UNIT
V
TH
Power status threshold, CPS input
†
400-kΩ resistor
†
4.7 7.5 V
V
O
TPBIAS output voltage At rated I
O
current 1.665 2.015 V
I
I
Input current (PC0−PC2 inputs) V
CC
= 3.6 V 5 µA
†
Measured at cable power side of resistor.
14.4.2 Driver
PARAMETER TEST CONDITION MIN MAX UNIT
V
OD
Differential output voltage 56 Ω, See Figure 14−1 172 265 mV
I
DIFF
Driver difference current, TPA+, TPA−, TPB+, TPB− Drivers 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 14−1 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.
TPAx+
TPBx+
TPAx−
TPBx−
56 Ω
Figure 14−1. Test Load Diagram
14.4.3 Receiver
PARAMETER TEST CONDITION MIN TYP MAX UNIT
Z
ID
Differential impedance
Drivers disabled
4 7 kΩ
Z
ID
Differential impedance Drivers disabled
4 pF
Z
IC
Common-mode impedance
Drivers disabled
20 kΩ
Z
IC
Common-mode impedance Drivers 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 Drivers disabled 0.6 1.0 V
V
TH
+ Positive arbitration comparator threshold voltage Drivers disabled 89 168 mV
V
TH
− Negative arbitration comparator threshold voltage Drivers disabled −168 −89 mV
V
TH−SP200
Speed signal threshold
TPBIAS−TPA common mode
voltage, drivers disabled
49 131 mV
V
TH−SP400
Speed signal threshold
TPBIAS−TPA common mode
voltage, drivers disabled
314 396 mV