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IDT7164 Datasheet

CMOS Static RAM

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CMOS Static RAM
64K (8K x 8-Bit)
7164S
7164L
Features
High-speed address/chip select access time
– Commercial: 20/25ns (max.)
– Industrial: 20/25ns (max.)
– Military: 20/25/35/45/55/70/85/100ns (max.)
Low power consumption
Battery backup operation – 2V data retention voltage
(L Version only)
Produced with advanced CMOS high-performance
technology
Inputs and outputs directly TTL-compatible
Three-state outputs
Available in 28-pin DIP, CERDIP and SOJ
Military product compliant to MIL-STD-883, Class B
Industrial temperature range (–40°C to +85°C) is available
for selected speeds
Green parts available, see ordering information
Description
The IDT7164 is a 65,536 bit high-speed static RAM organized as 8K
x 8. It is fabricated using high-performance, high-reliability CMOS tech-
nology.
Address access times as fast as 20ns are available and the circuit offers
a reduced power standby mode. When CS1 goes HIGH or CS2 goes
LOW, the circuit will automatically go to, and remain in, a low-power stand-
by mode. The low-power (L) version also offers a battery backup data
retention capability at power supply levels as low as 2V.
All inputs and outputs of the IDT7164 are TTL-compatible and
operation is from a single 5V supply, simplifying system designs. Fully
static asynchronous circuitry is used, requiring no clocks or refreshing
for operation.
The IDT7164 is packaged in a 28-pin 300 mil CERDIP, a 28-pin 600
mil CERDIP, 300mil Plastic DIP and 300mil SOJ
Military grade product is manufactured in compliance with 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
ADDRESS
DECODER
A12
I/O 0
65,536 BIT
MEMORY ARRAY
0
I/O CONTROL
VCC
GND
7
I/O7
CS1
CS2
CONTROL
OE
LOGIC
WE
1
Jul.30.20
2967 drw 01


Renesas Electronics Components Datasheet

IDT7164 Datasheet

CMOS Static RAM

No Preview Available !

7164S/L
CMOS Static RAM 64K (8K x 8-Bit)
Pin Configurations(1)
NC
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
GND
1
28
2
27
3
26
4
25
5
7164
CD28
24
6 SD28 23
7 PJG28 22
8 PTG28 21
9
20
10
19
11
18
12
17
13
16
14
15
VCC
WE
CS2
A8
A9
A11
OE
A10
CS1
I/O7
I/O6
I/O5
I/O4
I/O3
DIP/SOJ
Top View
2967 drw 02
NOTE:
1. This text does not indicate orientation of actual part-marking.
Military, Commercial, and Industrial Temperature Ranges
Absolute Maximum Ratings(1)
Symbol
Rating
Com'l.
Mil.
Unit
VTERM(2)
Terminal Voltage
with Respect
to GND
-0.5 to +7.0 -0.5 to +7.0 V
TA
Operating
Temperature
0 to +70 -55 to +125 oC
TBIAS
Temperature
Under Bias
-55 to +125 -65 to +135 oC
TSTG
Storage Temperature -55 to +125 -65 to +150 oC
PT
Power Dissipation
1.0
1.0
W
IOUT
DC Output Current
50
50
mA
NOTES:
2967 tbl 02
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may
cause permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated in the
operational sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect reliability.
2. VTERM must not exceed VCC + 0.5V.
Pin Descriptions
Name
A0 - A12
I/O0 - I/O7
CS1
CS2
WE
OE
GND
VCC
Description
Address
Data Input/Output
Chip Select
Chip Select
Write Enable
Output Enable
Ground
Power
2967 tbl 01
Truth Table(1,2,3)
WE CS1 CS2 OE
I/O
Function
X
H
X
X High-Z Deselected - Standby (ISB)
XX
L
X High-Z Deselected - Standby (ISB)
X VHC VHC or X High-Z Deselected - Standby (ISB1)
VLC
X
X VLC X High-Z Deselected - Standby (ISB1)
HL
H
H High-Z
Output Disabled
HL
H
L DATAOUT
Read Data
L
L
H
X DATAIN
Write Data
NOTES:
1. CS2 will power-down CS1, but CS1 will not power-down CS2.
2. H = VIH, L = VIL, X = don't care.
3. VLC = 0.2V, VHC = VCC - 0.2V
2967 tbl 03
Recommended DC Operating
Conditions
Symbol
Parameter
Min. Typ. Max. Unit
VCC Supply Voltage
4.5 5.0
5.5
V
GND Ground
0
0
0
V
VIH Input HIGH Voltage
2.2
____ VCC + 0.5 V
VIL Input LOW Voltage
-0.5(1)
____
0.8
V
NOTE:
1. VIL (min.) = –1.5V for pulse width less than 10ns, once per cycle.
2967 tbl 05
Recommended Operating
Temperature and Supply Voltage
Grade
Temperature
GND
Vcc
Military
-55OC to +125OC
0V
5V ± 10%
Industrial
-40OC to +85OC
0V
5V ± 10%
Commercial
0OC to +70OC
0V
5V ± 10%
2967 tbl 04
2
Jul.30.20


Part Number IDT7164
Description CMOS Static RAM
Maker Renesas
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IDT7164 Datasheet PDF






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