®
PACKAGING INFORMATION
ISSI
LQFP (Low Profile Quad Flat Pack)
Package Code: LQ (44-pin)
D
D1
E
E1
L1
θ
L
e
b
SEATING
PLANE
A2
A
A1
Notes:
Low Profile Quad Flat Pack (LQ)
1. All dimensioning and tolerancing
conforms to ANSI Y14.5M-1982.
2. Dimensions D1 and E1 do not include
mold protrusions. Allowable protrusion is
0.25 mm per side. D1 and E1 include
mold mismatch.
Ref. Std.
No. Leads
MS-026
44
Millimeters
Min Max
Inches
Symbol
Min
Max
3. Controlling dimension: millimeters.
A
A1
A2
b
—
1.60
0.15
1.45
0.45
0.20
—
0.063
0.006
0.057
0.018
0.008
0.05
1.35
0.30
0.09
0.002
0.053
0.012
0.004
C
D
12.00 BSC
0.472 BSC
D1
E
E1
e
10.00 BSC
12.00 BSC
10.00 BSC
0.80 BSC
0.394 BSC
0.472 BSC
0.394 BSC
0.031 BSC
L
0.45
1.00 REF.
0o 7o
0.75
0.018
0.039 REF.
0o 7o
0.030
L1
θ
Copyright © 2003 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time
without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to
obtain the latest version of this device specification before relying on any published information and before placing orders for products.
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. B
05/30/03
ISSI [ INTEGRATED SILICON SOLUTION, INC ]
