MIC2550ABML MICREL [Micrel Semiconductor], MIC2550ABML Datasheet - Page 6

• Manufacturer Part Number: MIC2550ABML
• Description: Universal Serial Bus Transceiver
• Manufacturer: MICREL [Micrel Semiconductor]

MIC2550A
Test Circuits
M9999-031805
O
O
E
E
Note. X = undefined.
#
#
=
=
V
D
0
0
1
1
0
0
1
1
0
1
P
+
T (
(
R
a r
e
c
n
n I
n I
e
s
v i
p
p
m
t u
t u
e
i
: )
: ) t
Figure 5. Load for Enable and Disable Time (D+, D–)
V
D
0
1
0
1
0
1
0
1
M
–
C
C
C
*1.5k on D– for low speed or D+ for high speed
L
L
L
= 50pF, full speed
= 50pF, low speed (minimum timing)
= 600pF, low speed (maximum timing)
Device
For D+, D–:
V = 0V for t
V = V
Figure 6. V
Under
Test
Device
Figure 7. D+ and D– Load
Under
Test
BUS
Table 1. Truth Table
D
V
Device
Under
for t
0
0
1
1
0
0
1
1
Test
P
+
PZH
PZL
24Ω
P
15kΩ
and t
, V
and t
24Ω
50pF
M
6
PHZ
and RCV Load
PLZ
Test
Point
C
O
O
L
u
u
V
D
500Ω
p t
0
1
0
1
p t
0
1
0
1
M
–
25pF
t u
t u
1.5kΩ*
V
V
TRM
R
R
C
X
X
C
X
X
0
1
0
1
V
V
U
U
L
L
L
L
R
n
R
n
o
o
o
o
d
d
S
S
e
e
g
g
g
g
f e
f e
E
E
s
s
c i
c i
c i
c i
u
u
0
n i
0
n i
t l
t l
0
1
0
1
e
e
d
d
March 2005
Micrel, Inc.