HIGH-SPEED
2K x 8 DUAL-PORT
STATIC RAM
Integrated Device Technology, Inc.
IDT7132SA/LA
IDT7142SA/LA
FEATURES:
• High-speed access
— Military: 25/35/55/100ns (max.)
— Commercial: 25/35/55/100ns (max.)
— Commercial: 20ns only in PLCC for 7132
• Low-power operation
— IDT7132/42SA
Active: 550mW (typ.)
Standby: 5mW (typ.)
— IDT7132/42LA
Active: 550mW (typ.)
Standby: 1mW (typ.)
• Fully asynchronous operation from either port
• MASTER IDT7132 easily expands data bus width to 16-or-
more bits using SLAVE IDT7142
• On-chip port arbitration logic (IDT7132 only)
•
BUSY
output flag on IDT7132;
BUSY
input on IDT7142
• Battery backup operation —2V data retention
• TTL-compatible, single 5V
±10%
power supply
• Available in popular hermetic and plastic packages
• Military product compliant to MIL-STD, Class B
• Standard Military Drawing # 5962-87002
• Industrial temperature range (–40°C to +85°C) is available,
tested to miliary electrical specifications
DESCRIPTION:
The IDT7132/IDT7142 are high-speed 2K x 8 Dual-Port
Static RAMs. The IDT7132 is designed to be used as a stand-
alone 8-bit Dual-Port RAM or as a “MASTER” Dual-Port RAM
together with the IDT7142 “SLAVE” Dual-Port in 16-bit-or-
more word width systems. Using the IDT MASTER/SLAVE
Dual-Port RAM approach in 16-or-more-bit memory system
applications results in full-speed, error-free operation without
the need for additional discrete logic.
Both devices provide two independent ports with separate
control, address, and l/O pins that permit independent, asyn-
chronous access for reads or writes to any location in memory.
An automatic power down feature, controlled by
CE
permits
the on-chip circuitry of each port to enter a very low standby
power mode.
Fabricated using IDT’s CMOS high-performance technol-
ogy, these devices typically operate on only 550mW of power.
Low-power (LA) versions offer battery backup data retention
capability, with each Dual-Port typically consuming 200µW
from a 2V battery.
The IDT7132/7142 devices are packaged in a 48-pin
sidebraze or plastic DIPs, 48-pin LCCs, 52-pin PLCCs, and
48-lead flatpacks. Military grade product is manufactured in
compliance with the latest revision of MIL-STD-883, Class B,
making it ideally suited to military temperature applications
demanding the highest level of performance and reliability.
FUNCTIONAL BLOCK DIAGRAM
OE
L
R/
OE
R
R/
CE
L
W
L
CE
R
W
R
I/O
0L
- I/O
7L
I/O
Control
I/O
Control
I/O
0R
-I/O
7R
BUSY
L
(1,2)
BUSY
R
Address
Decoder
11
(1,2)
A
10L
A
0L
MEMORY
ARRAY
Address
Decoder
A
10R
A
0R
NOTES:
1. IDT7132 (MASTER):
BUSY
is open
drain output and requires pullup
resistor of 270Ω.
IDT7142 (SLAVE):
BUSY
is input.
2. Open drain output: requires pullup
resistor of 270Ω.
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
11
CE
L
ARBITRATION
LOGIC
CE
R
2692 drw 01
MILITARY AND COMMERCIAL TEMPERATURE RANGES
©1996 Integrated Device Technology, Inc.
For latest information contact IDT’s web site at www.idt.com or fax-on-demand at 408-492-8391.
OCTOBER 1996
DSC-2692/8
6.02
1
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
