Revision 1.6
Nov. 16, 2000
-10-
GL620USB
6.4 DC Characteristics (PIN10, 11)
SYMBOL
V
DD
Power Supply Voltage
V
IL
LOW level input voltage
V
IH
HIGH level input voltage
V
TLH
LOW to HIGH threshold voltage
V
THL
HIGH to LOW threshold voltage
V
HYS
Hysteresis voltage
R
UP
Pad internal pullup resister
Description
MIN
4.5
2.65
2.01
0.69
1.1
191.27
TYP
5.0
2.37
0.82
1.55
240.69
MAX
5.5
0.69
2.65
0.99
1.79
376.34
UNIT
V
V
V
V
V
V
Kohms
6.5 DC Characteristics (PIN14, 15)
SYMBOL
V
DD
Power Supply Voltage
I
OL
DC output sink current at 0.4V
I
OH
DC output source current at V
DD
-0.4V
I
OHTTL
DC output source current at TTL high
V
IL
LOW level input voltage
V
IH
HIGH level input voltage
V
TLH
LOW to HIGH threshold voltage
V
THL
HIGH to LOW threshold voltage
V
HYS
Hysteresis voltage
V
OL
LOW level output voltage when I
OL
=4mA
R
DN
Pad internal pulldown resister
Description
MIN
4.5
3.89
2.85
10.9
2.68
2.03
0.71
1.1
122.08
TYP
5.0
5.94
4.36
21.5
2.39
0.83
1.55
160
MAX
5.5
7.56
5.46
29.75
0.71
2.68
1.0
1.8
0.4
267.31
UNIT
V
mA
mA
mA
V
V
V
V
V
V
Kohms
6.6 Switching Characteristics
SYMBOL
F
X1
X1 crystal frequency
T
CYC
X1 cycle time
T
X1L
X1 clock LOW time
T
X1H
X1 clock HIGH time
T
r30pf
Output pad rise time from 10% to 90% swing with 30pF
loading
T
f30pf
Output pad fall time from 10% to 90% swing with 30pF
loading
T
r50pf
Output pad rise time from 10% to 90% swing with50pF
loading
T
f50pf
Output pad fall time from 10% to 90% swing with 50pF
loading
T
rUSB
D+/D- rise time with 50pF loading
T
fUSB
D+/D- fall time with 50pF loading
Description
MIN
11.97
0.45T
cyc
0.45T
cyc
6
TYP
12
83.3
8
MAX
12.03
12
UNIT
MHz
ns
ns
ns
ns
5.3
7
10.4
ns
9.5
13
19
ns
7.7
10
16
ns
4
4
20
20
ns
ns