Datasheet

Electrical Characteristics
181
March 5 2007 − June 2011 SCPS154C
11.6 Electrical Characteristics Over Recommended Operating Conditions (3.3-V I/O)
PARAMETER OPERATION
TEST
CONDITIONS
MIN MAX UNITS
V
IH
High-level input voltage (Note 16) V
DD_33
0.7 V
DD_33
V
DD_33
V
V
IL
Low-level input voltage (Note 16) V
DD_33
0 0.3 V
DD_33
V
V
I
Input voltage 0 V
DD_33
V
V
O
Output voltage (Note 17) 0 V
DD_33
V
t
T
Input transition time (t
rise
and t
fall
) 0 25 ns
V
hys
Input hysteresis (Note 18) 0.13 V
DD_33
V
V
OH
High-level output voltage V
DD_33
I
OH
= −4 mA 0.8 V
DD_33
V
V
OL
Low-level output voltage V
DD_33
I
OL
= 4 mA 0.22 V
DD_33
V
I
OZ
High-impedance, output current (Note 17) V
DD_33
V
I
= 0 to V
DD_33
±20 μA
I
OZP
High-impedance, output current with internal
pullup or pulldown resistor (Note 19)
V
DD_33
V
I
= 0 to V
DD_33
±100 μA
I
I
Input current (Note 20) V
DD_33
V
I
= 0 to V
DD_33
±1 μA
NOTES: 16. Applies to external inputs and bidirectional buffers.
17. Applies to external outputs and bidirectional buffers.
18. Applies to PERST
and GRST.
19. Applies to GRST
(pullup resistor) and most GPIO (pullup resistor).
20. Applies to external input buffers.
NOTE: This table applies to PERST, WAKE, REFCLK_SEL, GRST, GPIO7:0, CNA, PC2:0,
and all RSVD terminals.
11.7 Electrical Characteristics Over Recommended Operating Conditions (1394a PHY
Port Driver)
PARAMETER TEST CONDITIONS MIN MAX UNITS
V
OD
Differential output voltage 56 Ω, see Figure 11−1 172 265 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‡ −8.1‡ mA
V
OFF
Off state differential voltage Drivers disabled 20 mV
†
Limits defined as algebraic sum of TPA+ and TPA− driver currents. Limits also apply to algebraic sum of TPB+ and TPB− driver currents.
‡
Limits defined as absolute limit of each of TPB+ and TPB− driver currents.
TPAx+
TPBx+
TPAx−
TPBx−
56 Ω
Figure 11−1. Test Load Diagram
Not Recommended for New Designs