IDT7198S Datasheet, PDF (1/8 Pages) Integrated Device Technology – CMOS STATIC RAMs 64K (16K x 4-BIT) Added Chip Select and Output Controls

®
Integrated Device Technology, Inc.
CMOS STATIC RAMs
64K (16K x 4-BIT)
Added Chip Select and Output Controls
IDT7198S
IDT7198L
FEATURES:
• Fast Output Enable (OE) pin available for added system
flexibility
• Multiple Chip Selects (CS1, CS2) simplify system design
and operation
• High speed (equal access and cycle times)
— Military: 20/25/35/45/55/70/85ns (max.)
• Low power consumption
• Battery back-up operation—2V data retention (L version
only)
• 24-pin CERDIP, high-density 28-pin leadless chip carrier,
and 24-pin CERPACK packaging available
• Produced with advanced CMOS technology
• Bidirectional data inputs and outputs
• Inputs/outputs TTL-compatible
• Military product compliant to MIL-STD-883, Class B
DESCRIPTION:
The IDT7198 is a 65,536 bit high-speed static RAM orga-
nized as 16K x 4. It is fabricated using IDT’s high-perfor-
mance, high-reliability technology—CMOS. This state-of-the-
art technology, combined with innovative circuit design tech-
niques, provides a cost effective approach for memory inten-
sive applications.
Access times as fast as 20ns are available. The IDT7198
offers a reduced power standby mode, ISB1, which is activated
when CS1 or CS2 goes HIGH. This capability decreases
power, while enhancing system reliability. The low-power
version (L) also offers a battery backup data retention capa-
bility where the circuit typically consumes only 30µW when
operating from a 2V battery.
All inputs and outputs are TTL-compatible and operate
from a single 5V supply.
The lDT7198 is packaged in either a 24-pin ceramic DlP,
28-pin leadless chip carrier, and 24-pin CERPACK.
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
A0
DECODER
65,536-BIT
MEMORY ARRAY
VCC
GND
A13
I/O0
I/O1
I/O2
I/O3
INPUT
DATA
CONTROL
COLUMN I/O
CS1
CS2
WE1
OE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY TEMPERATURE RANGE
©1994 Integrated Device Technology, Inc.
6.4
2985 drw 01
MAY 1994
DSC-1027/4
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