Ac characteristics – Rainbow Electronics AT76C551 User Manual
Page 76
76
AT76C551
1612D–08/01
AC Characteristics
Note:
1. With external 27W series resistor
Table 19. DP, DM Driver Characteristics
Symbol
Parameter
Condition
Min
Max
Unit
t
R
Rise Time
C
L
= 50 pF
4
20
ns
t
F
Fall Time
C
L
= 50 pF
4
20
ns
t
RFM
TR/TF Matching
90
110
%
V
CRS
Output Signal Crossover
Except First Transition From Idle State
1.3
2.0
V
Z
DRV
Driver Output Resistance
Steady State Drive
29
44
W
Table 20. DP, DM Data Source Timings
Symbol
Parameter
Condition
Min
Max
Unit
T
DRATE
Full Speed Data Rate
Average Bit Rate
11.97
12.03
Mbs
T
FRAME
Frame Interval
0.9995
1.0005
ms
T
DJ1
T
DJ2
Source Diff Driver Jitter To Next Transition For Paired Transitions
-3.5
-4.0
3.5
4.0
ns
ns
T
FDEOP
Source Jitter for Differential
Transition to SE0 Transition
-2
5
ns
T
FEOPT
Source SE0 interval of EOP
160
175
ns
T
FEOPR
Receiver SE0 interval of EOP
82
ns
T
JR1
T
JR2
Recvr Data Jitter Tolerance
To Next Transition
For Paired Transitions
-18.5
-9
18.5
9
ns
ns
T
FST
Width of SE0 interval during differential transition
14
ns