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GL640 Datasheet(PDF) 36 Page - List of Unclassifed Manufacturers

Part # GL640
Description  IEEE-1284 to USB Bridge
PDF  39 Pages
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Manufacturer  ETC [List of Unclassifed Manufacturers]
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GL640 Datasheet(HTML) 36 Page - List of Unclassifed Manufacturers

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Revision 1.1
Jun. 7, 1999
-35-
GL640USB, GL640USB-A
11.4 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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