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Revision 1.6
Nov. 16, 2000
-10-
GL620USB
6.4 DC Characteristics (PIN10, 11)
SYMBOL
Description
MIN
TYP
MAX
UNIT
VDD
Power Supply Voltage
4.5
5.0
5.5
V
VIL
LOW level input voltage
0.69
V
VIH
HIGH level input voltage
2.65
V
VTLH
LOW to HIGH threshold voltage
2.01
2.37
2.65
V
VTHL
HIGH to LOW threshold voltage
0.69
0.82
0.99
V
VHYS
Hysteresis voltage
1.1
1.55
1.79
V
RUP
Pad internal pullup resister
191.27
240.69
376.34
Kohms
6.5 DC Characteristics (PIN14, 15)
SYMBOL
Description
MIN
TYP
MAX
UNIT
VDD
Power Supply Voltage
4.5
5.0
5.5
V
IOL
DC output sink current at 0.4V
3.89
5.94
7.56
mA
IOH
DC output source current at VDD -0.4V
2.85
4.36
5.46
mA
IOHTTL
DC output source current at TTL high
10.9
21.5
29.75
mA
VIL
LOW level input voltage
0.71
V
VIH
HIGH level input voltage
2.68
V
VTLH
LOW to HIGH threshold voltage
2.03
2.39
2.68
V
VTHL
HIGH to LOW threshold voltage
0.71
0.83
1.0
V
VHYS
Hysteresis voltage
1.1
1.55
1.8
V
VOL
LOW level output voltage when IOL=4mA
0.4
V
RDN
Pad internal pulldown resister
122.08
160
267.31
Kohms
6.6 Switching Characteristics
SYMBOL
Description
MIN
TYP
MAX
UNIT
FX1
X1 crystal frequency
11.97
12
12.03
MHz
TCYC
X1 cycle time
83.3
ns
TX1L
X1 clock LOW time
0.45Tcyc
ns
TX1H
X1 clock HIGH time
0.45Tcyc
ns
Tr30pf
Output pad rise time from 10% to 90% swing with 30pF
loading
6
8
12
ns
Tf30pf
Output pad fall time from 10% to 90% swing with 30pF
loading
5.3
7
10.4
ns
Tr50pf
Output pad rise time from 10% to 90% swing with50pF
loading
9.5
13
19
ns
Tf50pf
Output pad fall time from 10% to 90% swing with 50pF
loading
7.7
10
16
ns
TrUSB
D+/D- rise time with 50pF loading
4
20
ns
TfUSB
D+/D- fall time with 50pF loading
4
20
ns
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