HX6656 Datasheet, PDF (9/12 Pages) List of Unclassifed Manufacturers – 32K x 8 ROM-SOI

HX6656
PACKAGING
The 32K x 8 ROM is offered in a custom 36-lead flat pack
(FP), 28-Lead FP, or standard 28-lead DIP. Each package
is constructed of multilayer ceramic (Al₂O₃) and features
internal power and ground planes. The 36-lead FP also
features a non-conductive ceramic tie bar on the lead
frame. The tie bar allows electrical testing of the device,
while preserving the lead integrity during shipping and
handling, up to the point of lead forming and insertion.
Ceramic chip capacitors can be mounted to the package to
maximize supply noise decoupling and increase board
packing density. These capacitors attach directly to the
internal package power and ground planes. This design
minimizes resistance and inductance of the bond wire and
package. All NC (no connect) pins should be connected
to VSS to prevent charge build up in the radiation
environment.
28-LEAD FP PINOUT
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
VSS
1
28
2
27
3
26
4
25
5
24
6
23
7 ^Top 22
8 View 21
9
20
10
19
11
18
12
17
13
16
14
15
VDD
NWE
A13
A8
A9
A11
NOE
A10
NCS
DQ7
DQ6
DQ5
DQ4
DQ3
36-LEAD FP PINOUT
VSS
1
36
VDD
2
35
A14
3
34
A12
4
33
A7
5
32
A6
6
31
A5
7
30
A4
8
A3
9
Top
29
28
A2
10
A1
11
View
27
26
A0
12
25
DQ0
13
24
DQ1
14
23
DQ2
15
22
NC
16
21
VDD
17
20
VSS
18
19
VSS
VDD
NWE
CE
A13
A8
A9
A11
NOE
A10
NCS
DQ7
DQ6
DQ5
DQ4
DQ3
VDD
VSS
36-LEAD FLAT PACK
1
E
22018131-001
Top
View
H
J
L
Ceramic
Body
A
L
Kovar
Lid [3]
I
C
X
Optional
N
VDD ^{VSS Capacitors VDD VSS}
Y
1
O
V
T
P
R
W
U
9
b
(width)
e
(pitch)
Non-
Conductive
Tie-Bar
0.004
M
All dimensions are in inches [1]
A 0.095 ± 0.014
M 0.008 ± 0.003
S
b 0.008 ± 0.002
N 0.050 ± 0.010
C 0.005 to 0.0075 O 0.090 ref
D 0.650 ± 0.010
P 0.015 ref
E 0.630 ± 0.007
R 0.075 ref
e 0.025 ± 0.002 [2] S 0.113 ± 0.010
F 0.425 ± 0.005 [2] T 0.050 ref
G 0.525 ± 0.005
U 0.030 ref
H 0.135 ± 0.005
V 0.080 ref
I 0.030 ± 0.005
W 0.005 ref
J 0.080 typ.
X 0.450 ref
L 0.285 ± 0.015
Y 0.400 ref
[1] Parts delivered with leads unformed
[2] At tie bar
[3] Lid tied to VSS