IDT7134SA/LA
HIGH-SPEED 4K x 8 DUAL-PORT STATIC RAM
MILITARY AND COMMERCIAL TEMPERATURE RANGES
FUNCTIONAL DESCRIPTION
The IDT7134 provides two ports with separate control,
address, and I/O pins that permit independent access for
reads or writes to any location in memory. These devices have
an automatic power down feature controlled by
CE
. The
CE
controls on-chip power down circuitry that permits the
respective port to go into standby mode when not selected
(
CE
high). When a port is enabled, access to the entire
memory array is permitted. Each port has its own Output
Enable control (
OE
). In the read mode, the port’s
OE
turns on
the output drivers when set LOW. Non-contention READ/
WRITE conditions are illustrated in the table below.
TRUTH TABLE I – READ/WRITE CONTROL
(2)
Left or Right Port
(1)
R/
W
X
X
L
H
X
CE OE
H
H
L
L
X
X
X
X
L
H
D
0-7
Z
Z
DATA
IN
DATA
OUT
Z
Function
Port Disabled and in Power
Down Mode, I
SB2
or I
SB4
CE
R
=
CE
L
= H, Power Down
Mode, I
SB1
or I
SB3
Data on port written into
memory
Data in memory output on port
High impedance outputs
2720 tbl 11
NOTES:
1. A
OL
- A
11L
≠
A
OR
- A
11R
2. "H" = HIGH, "L" = LOW, "X" = Don’t Care, and "Z" = High-impedance
ORDERING INFORMATION
IDT
XXXX
Device Type
A
Power
999
Speed
A
Package
A
Process/
Temperature
Range
Blank
B
P
C
J
L48
F
20
25
35
45
55
70
LA
SA
7134
Commercial (0°C to +70°C)
Military (–55°C to +125°C)
Compliant to MIL-STD-883, Class B
48-pin Plastic DIP (P48-1)
48-pin Ceramic DIP (C48-2)
52-pin PLCC (J52-1)
48-pin LCC (L48-1)
48-pin Ceramic Flatpack (F48-1)
Commercial Only
Speed in nanoseconds
Low Power
Standard Power
32K (4K x 8-Bit) Dual-Port RAM
2720 drw 13
6.04
9
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
