ICS291
TRIPLE PLL FIELD PROG. SPREAD SPECTRUM CLOCK SYNTHESIZER
EPROM CLOCK SYNTHESIZER
Package Outline and Package Dimensions
(20-pin TSSOP, 173 Mil. Body)
Package dimensions are kept current with JEDEC Publication No. 95
24
Millimeters
Symbol
E1
E
Inches
Min
Max
Min
Max
INDEX
AREA
1 2
D
A
A1
A2
b
C
D
E
E1
e
L
α
—
1.20
0.05
0.15
0.80
1.05
0.19
0.30
0.09
0.20
6.40
6.60
6.40 BASIC
4.30
4.50
0.65 Basic
0.45
0.75
0°
8°
—
.047
0.002
0.006
0.032
0.041
0.007
0.012
0.0035 0.008
0.252
0.260
0.252 BASIC
0.169
0.177
0.0256 Basic
.018
.030
0°
8°
A2
A1
A
c
- C-
e
b
SEATING
PLANE
.10 (.004)
C
L
IDT™ / ICS™
TRIPLE PLL FIELD PROG. SPREAD SPECTRUM CLOCK SYNTHESIZER 8
ICS291
REV D 061306