VT1621M VIA, VT1621M Datasheet - Page 43

• Manufacturer Part Number: VT1621M
• Description: TV Encoder
• Manufacturer: VIA

Date Code, Chip Revision
and Country of Assembly
Revision 1.0 June 17, 2002
We Connect
We Connect
We Connect
We Connect
Part Number
Lot Code
1.
2.
3.
NOTES :
DIMENSIONS D1 AND E1 DO NOT INCLUDE MOLD
PROTRUSION. ALLOWABLE PROTRUSION IS 0.25 mm
PER SIDE. D1 AND E1 ARE MAXIMUM PLASTIC BODY
SIZE DIMENSIONS INCLUDING MOLD MISMATCH.
DIMENSION b DOES NOT INCLUDE DAMBAR PROTRUSION.
ALLOWABLE DAMBAR PROTRUSION SHALL NOT CAUSE
THE LEAD WIDTH TO EXCEED THE MAXIMUM b DIMENSION
BY MORE THAN 0.08mm. DAMBAR CAN NOT BE LOCATED
ON THE LOWER RADIUS OR THE FOOT. MINIMUM SPACE
BETWEEN PROTRUSION AND AN ADJACENT LEAD IS
0.07mm FOR 0.4mm AND 0.5mm PITCH PACKAGES.
DIMENSION "b" DIFFERENT FROM JEDEC SPEC:
JEDEC: 0.30 / 0.37 / 0.45
Figure 22. Mechanical Specification – 44-Pin TQFP Thin Quad Flat Pack
ASE: 0.22 / 0.30 / 0.38
P
ACKAGE
H
-
0
A
0
0
-
-
2
3
S
0
-
1
M
L
R1
R2
0.25m m
ECHANICAL
YYWWRR
LLLLLLLLL
GAGE PLANE
VT1621
e
D1
D2
D
- 38-
TAIWAN
D
b
CONTROL D IM ENSIONS ARE IN M ILLIMETERS.
SYMBOL
C
aaa
bbb
ddd
ccc
A1
A2
D1
E1
R2
R1
D2
E2
S
L1
0
0
0
D
-
-
-
A
E
0
L
S
b
e
c
-
1
2
3
TOLERANCES OF FORM AND POSITION
M
PECIFICATIONS
ddd
4X
M C
MIN.
0.05
0.95
0.08
0.08
0.09
0.45
0.20
0.22
ccc
11
11
0
0
4X
MILLIMETER
12.00 BSC .
10.00 BSC .
12.00 BSC .
10.00 BSC .
A
0.80 BSC.
bbb
1.00 REF
C
VT1621 / VT1621M TV Encoder
NOM. MAX.
B
1.00
0.60
0.30
8.00
8.00
0.20
0.20
0.10
0.20
3.5
12
12
aaa
H
B
s
C
A
D
C
B
s
1.20
0.15
1.05
0.20
0.20
0.75
0.38
SEATING
PLANE
A
13
13
D
7
B
D
0.002
0.037
0.003
0.003
0.004
0.018
0.008
0.009
MIN.
11
11
0
0
A2
A
0.472 BSC.
0.393 BSC.
0.472 BSC.
0.393 BSC.
0.031 BSC.
0.039 REF
NOM.
0.039
0.024
0.012
0.315
0.315
0.008
0.008
0.004
0.008
INCH
3.5
12
12
Electrical Specifications
c
A1
MAX.
0.047
0.006
0.041
0.008
0.008
0.030
0.015
13
13
7