AU9254_05 Datasheet, PDF (16/23 Pages) List of Unclassifed Manufacturers – USB Hub Controller

AC ELECTRICAL CHARACTERISTICS
GND=0V, t_R = t_F =3.0 ns; C_L =50 pF; RL=500 Ohms
SYMBOL
Table 5.9 AC Electrical Characteristics
PARAMETER
WAVEFORM
LIMITS (T_AMB)
0^0˚C to +25^0˚C
0^0˚C to +70^0˚C UNIT
MIN TYP MAX MIN MAX
tpLH
tpHL
VMO/VPO to D+/D-
Full Speed
1
0
0
12
12
0
0
14
14
ns
trise
tfall
Rise and Fall Times
Full Speed
2
4
4
9
9
20
20
4
4
20
20
ns
tRFM
Rise and Fall Time
Matching Full Speed
90
110
90
110
%
tpLH
tpHL
VMO/VPO to D+/D-
Low Speed
1
120 300
120 300
300
300
ns
trise
tfall
Rise and Fall Times
Low Speed
2
75
75
300
200
75
75
300
200
ns
tRFM
Rise and Fall Time
Matching Low Speed
70
130
70
130
%
tpLH
tpHL
D+/D- to RCV
3
9
16
9
16
16
16
ns
tpLH
tpHL
tpHZ
tpZH
tpLZ
tpZL
D+/D- to VP/VM
OE# to D+/D- RL =
500ohm
tsu
Setup for SPEED
1
4
8
4
8
12
12
4
10
10
5
0
8
8
ns
12
12
10
ns
10
ns
Vcr
Crossover point¹
3
1.3
2.0
1.3
2.0
V
NOTES:
1. The crossover point is in the range of 1.3V to 2.5V for the low speed mode with
a 50 pF capacitance.
AU9254 USB Hub Controller V1.02W
Official Release_ Public
Page 16 of 23