6 / 8 page
SC660E
SMBus System Clock Buffer for Mobile Applications
Cypress Semiconductor Corporation
3901 North First Street
Document#: 38-07025 Rev. *A
12/17/2002
San Jose, CA 95134. Tel: 408-043-2600
Page 6 of 8
http://www.cypress.com
TB40_ Type Buffer Characteristics (All Clock Outputs)
Characteristic
Symbol
Min
Typ
Max
Units
Conditions
Pull-Up Current Min
IOHmin
30
-
39
mA
Vout = VDD - .5V
Pull-Up Current Max
IOHmax
75
-
109
mA
Vout = 1.5V
Pull-Down Current Min
IOLmin
30
-
40
mA
Vout = 0.4
Pull-Down Current Max
IOLmax
75
-
103
mA
Vout = 1.2V
Dynamic Output Impedance
Zo
8
-
15
Ohms
66 and 100 MHz
Rise/Fall Time Min
Between 0.4 V and 2.4 V
TRFmin
-
-
1.33
nS
30 pF Load
Rise/Fall Time Max
Between 0.4 V and 2.4 V
TRFmax
-
-
1.33
nS
30 pF Load
VDD = VDD1 thru VDD5 =3.3V
±5%, , TA = -40ºC to +85ºC
Package Drawing and Dimensions
28 Pin SSOP Outline Dimensions
INCHES
MILLIMETERS
SYMBOL
MIN
NOM
MAX
MIN
NOM
MAX
A
-
-
0.079
-
-
2.0
A1
0.002
-
0.006
0.05
-
0.15
A2
0.065
0.069
0.073
1.65
1.75
1.85
B
0.009
-
0.015
0.22
-
0.38
C
0.004
-
0.010
0.09
-
0.25
D
0.390
0.402
0.413
9.90
10.20
10.50
E
0.197
0.209
0.220
5.00
5.30
5.60
e
0.026 BSC
0.65 BSC
H
0.291
0.307
0.323
7.40
7.80
8.20
L
0.022
0.030
0.037
0.55
0.75
0.95
a
0º
-
8º
0º
-
8º
B
e
A
A1
A2
E
a
L
C
D
H
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