
MIC2550A
Micrel, Inc.
M9999-031805
4
March 2005
Symbol
Transceiver DC Characteristics
I
LO
V
DI
V
CM
V
SE
Receiver Hysteresis,
Note 6
V
OL
V
OH
V
CRS
Note 6
C
IN
Z
DRV
Low-Speed Driver Characteristics, Note 7
t
R
Parameter
Condition
Min
Typ
Max
Units
Hi-Z State Data Line Leakage
Differential Input Sensitivity
Differential Common-Mode Range
Single-Ended Receiver Threshold
0V < V
BUS
< 3.3V, D+, D–, OE# = 1 pins only
|(D+) – (D–)|, V
IN
= 0.8V – 2.5V
Includes V
DI
range
–10
0.2
0.8
0.8
+10
μ
A
V
V
V
mV
V
V
V
2.5
2.0
200
Static Output Low,
Note 5
Static Output High,
Note 5
Output Signal Crossover Voltage
OE# = 0, R
L
= 1.5k
to 3.6V
OE# = 0, R
L
= 15k
to GND
0.3
3.6
2.0
2.8
1.3
Transceiver Capacitance,
Note 6
Driver Output Resistance
Pin to GND
Steady state drive,
Note 6
20
18
pF
6
Transition Rise Time
C
L
= 50pF
C
L
= 600pF
C
L
= 50pF
C
L
= 600pF
T
R
÷
T
F
75
ns
ns
ns
ns
%
V
300
t
F
Transition Fall Time
75
300
125
2.0
t
R
/t
F
V
CRS
Full-Speed Driver Characteristics, Note 7
t
R
t
F
t
R
/t
F
V
CRS
Transceiver Timing, Note 7
t
PVZ
t
PZD
t
PDZ
t
PZV
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Note 6.
Note 7.
Rise and Fall Time Matching
Output Signal Crossover Voltage
80
1.3
Transition Rise Time
Transition Fall Time
Rise and Fall Time Matching
Output Signal Crossover Voltage
C
L
= 50pF
C
L
= 50pF
T
R
÷
T
F
4
4
90
1.3
20
20
ns
ns
%
V
111.11
2.0
OE# to RCVR Tri-state Delay
Receiver Tri-state to Transmit Delay
OE# to DRVR Tri-state Delay
Driver Tri-state to Receiver Delay
V+/V– to D+/D– Propagation Delay
V+/V– to D+/D– Propagation Delay
D+/D– to RCV Propagation Delay
D+/D– to RCV Propagation Delay
D+/D– to V+/D– Propagation Delay
D+/D– to V+/D– Propagation Delay
Figure 1
Figure 1
Figure 1
Figure 1
Figure 4
Figure 4
Figure 3
Figure 3
Figure 3
Figure 3
15
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
15
15
15
15
15
15
15
8
8
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
Applies to the VP, VM, RCV, OE#, SPD, and SUS pins.
Applies to D+, D–.
Not production tested. Guaranteed by design.
Characterized specification(s), but not production tested.