RAD Tolerant
ACT鈥揜S128K32 High Speed
4 Megabit SRAM Multichip Module
Features
s
Overall configuration as 128K x 32
s
Tolerant to 30KRad (Si)
s
Latch-up Immunity to 112MeV/(mg/cm
2
)
s
Input and Output TTL Compatible
s
35 & 45ns Access Times
s
Full Military (-55擄C to +125擄C) Temperature Range
s
For Class K devices per MIL-PRF-38534 - Consult Factory
s
+5V Power Supply
s
Choice of 4 Hermetically sealed Co-fired Packages:
q
68鈥揕ead, Low Profile CQFP (F1), 1.56"SQ x .140"max
q
68鈥揕ead, Dual-Cavity CQFP (F2), .88"SQ x .20"max (.18"max thickness
available, contact factory for details)
(Drops into the 68 Lead JEDEC .99"SQ
CQFJ footprint)
q
66鈥揕ead, PGA-Type (P1), 1.385"SQ x .245"max
s
Internal Decoupling Capacitors
www.aeroflex.com/act1.htm
Preliminary
s
4 Low Power CMOS 128K x 8 SRAMs in one MCM
CIRCUIT TECHNOLOGY
General Description
The ACT鈥揜S128K32 is a High
Speed 4 megabit CMOS SRAM
Multichip
Module
(MCM)
designed for full temperature
range, military, space, or high
reliability mass memory and
fast cache applications.
The MCM can be organized
as a 128K x 32 bits, 256K x 16
bits or 512k x 8 bits device and
is input and output TTL
compatible. Writing is executed
when the write enable (WE)
and chip enable (CE) inputs are
low. Reading is accomplished
when WE is high and CE and
output enable (OE) are both
low. Access time grades of
35ns and 45ns maximum are
standard.
The +5 Volt power supply
version is standard.
The products are designed for
operation over the temperature
range of -55擄C to +125擄C and
screened under the full military
environment. DESC Standard
Military Drawing (SMD) part
numbers are pending.
The
ACT-RS128K32
is
manufactured in Aeroflex鈥檚
80,000ft
2
MIL-PRF-38534
certified facility in Plainview,
N.Y.
Block Diagram 鈥?PGA Type Package(P1) & CQFP(F2)
Pin Description
WE
1
CE
1
WE
2
CE
2
WE
3
CE
3
WE
4
CE
4
I/O
0-31
A
0
鈥?A
16
OE
128Kx8
128Kx8
128Kx8
128Kx8
A
0鈥?6
WE
1鈥?
CE
1鈥?
OE
V
cc
8
I/O
0-7
8
I/O
8-15
8
I/O
16-23
8
I/O
24-31
GND
NC
Data I/O
Address Inputs
Write Enables
Chip Enables
Output Enable
Power Supply
Ground
Not Connected
Block Diagram 鈥?CQFP(F1)
Pin Description
CE
1
WE
OE
A
0
鈥?A
16
128Kx8
128Kx8
128Kx8
128Kx8
CE
2
CE
3
CE
4
I/O
0-31
A
0鈥?6
WE
CE
1鈥?
OE
V
cc
8
I/O
0-7
8
I/O
8-15
8
I/O
16-23
8
I/O
24-31
GND
NC
Data I/O
Address Inputs
Write Enable
Chip Enables
Output Enable
Power Supply
Ground
Not Connected
eroflex Circuit Technology - Advanced Multichip Modules 漏 SCD3659 REV 3 12/17/98
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