ACT-S128K32 High Speed
4 Megabit SRAM Multichip Module
Features
■ 4 Low Power CMOS 128K x 8 SRAMs in one MCM
■ Overall configuration as 128K x 32
CIRCUIT TECHNOLOGY
www.aeroflex.com
■ Input and Output TTL Compatible
■ 17, 20, 25, 35, 45 & 55ns Access Times, 15ns Available by Special Order
■ Full Military (-55°C to +125°C) Temperature Range
■ +5V Power Supply
General Description
■ Choice of 7 Hermetically sealed Co-fired Packages:
● 68–Lead, Low Profile CQFP (F1), 1.56"SQ x .140"max
● 68–Lead, 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)
The ACT–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.
● 68–Lead, Single-Cavity CQFP (F18), .94"SQ x .140"max (Drops into the 68
Lead JEDEC .99"SQ CQFJ footprint)
● 66–Lead, PGA-Type (P2,P6 with/without shoulders), 1.185"SQ x .245"max
● 66–Lead, PGA-Type (P7,P3 with/without shoulders), 1.08"SQ x .160"max
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
17ns, 20ns, 25ns, 35ns, 45ns
and 55ns maximum are
standard.
■ Internal Decoupling Capacitors
■ DESC SMD# 5962–93187 Released (P2,P3,P6,P7)
5962–95595 Released (F1,F2,F18)
Block Diagram – PGA Type Package(P2,P7) & CQFP(F2,F18)
Pin Description
WE1 CE1 WE2 CE2 WE3 CE3 WE4 CE4
I/O0-31
Data I/O
A0–16 Address Inputs
WE1–4 Write Enables
CE1–4 Chip Enables
A0 – A16
OE
128Kx8
128Kx8
128Kx8
128Kx8
OE
Vcc
GND
NC
Output Enable
Power Supply
Ground
The +5 Volt power supply
version is standard and the
+3.3 Volt low power model is
available (See ACT-S128K32V
data sheet).
8
8
8
8
Not Connected
I/O0-7
I/O8-15
I/O16-23
I/O24-31
The products are designed for
operation over the temperature
range of -55°C to +125°C and
screened under the full military
environment. DESC Standard
Military Drawing (SMD) part
numbers are released and
available.
Block Diagram – CQFP(F1)
Pin Description
I/O0-31
Data I/O
CE1
CE2
CE3
CE4
WE
OE
A0–16 Address Inputs
A0 – A16
WE
Write Enable
CE1–4 Chip Enables
128Kx8
The
ACT-S128K32
is
128Kx8
128Kx8
128Kx8
OE
Vcc
GND
NC
Output Enable
Power Supply
Ground
manufactured in Aeroflex’s
2
80,000ft
certified facility in Plainview,
N.Y.
MIL-PRF-38534
8
8
8
8
Not Connected
I/O0-7
I/O8-15
I/O16-23
I/O24-31
eroflex Circuit Technology - Advanced Multichip Modules © SCD1659 REV E 5/21/01
AEROFLEX [ AEROFLEX CIRCUIT TECHNOLOGY ]
