HIGH-SPEED
4K x 8 DUAL-PORT
STATIC RAM
Integrated Device Technology, Inc.
IDT7134SA/LA
FEATURES:
• High-speed access
— Military: 25/35/45/55/70ns (max.)
— Commercial: 20/25/35/45/55/70ns (max.)
• Low-power operation
— IDT7134SA
Active: 500mW (typ.)
Standby: 5mW (typ.)
— IDT7134LA
Active: 500mW (typ.)
Standby: 1mW (typ.)
• Fully asynchronous operation from either port
• Battery backup operation—2V data retention
• TTL-compatible; single 5V (±10%) power supply
• Available in several popular hermetic and plastic packages
• Military product compliant to MIL-STD-883, Class B
• Industrial temperature range (–40°C to +85°C) is available,
tested to military electrical specifications
DESCRIPTION:
The IDT7134 is a high-speed 4K x 8 Dual-Port Static RAM
designed to be used in systems where on-chip hardware port
arbitration is not needed. This part lends itself to those
systems which cannot tolerate wait states or are designed to
be able to externally arbitrate or withstand contention when
both sides simultaneously access the same Dual-Port RAM
location.
The IDT7134 provides two independent ports with separate
control, address, and I/O pins that permit independent,
asynchronous access for reads or writes to any location in
memory. It is the user’s responsibility to ensure data integrity
when simultaneously accessing the same memory location
from both ports. 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
technology, these Dual-Port typically on only 500mW of
power. Low-power (LA) versions offer battery backup data
retention capability, with each port typically consuming 200µW
from a 2V battery.
The IDT7134 is packaged on either a sidebraze or plastic
48-pin DIP, 48-pin LCC, 52-pin PLCC and 48-pin Ceramic
Flatpack. 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
R/
W
L
R/
W
R
CE
L
CE
R
OE
L
I/O
0L
- I/O
7L
COLUMN
I/O
COLUMN
I/O
OE
R
I/O
0R
- I/O
7R
A
0L
- A
11L
LEFT SIDE
ADDRESS
DECODE
LOGIC
MEMORY
ARRAY
RIGHT SIDE
ADDRESS
DECODE
LOGIC
A
0R
- A
11R
2720 drw 01
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
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-2720/4
6.04
1
IDT7134SA/LA
HIGH-SPEED 4K x 8 DUAL-PORT STATIC RAM
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN CONFIGURATIONS
(1,2)
N/C
R/
L
N/C
A
11R
R/
L
A
11L
A
10L
A
0L
A
1L
A
2L
A
3L
A
4L
A
5L
A
6L
A
7L
A
8L
A
9L
I/O
0L
I/O
1L
I/O
2L
I/O
3L
I/O
4L
I/O
5L
I/O
6L
I/O
7L
GND
W
OE
L
I/O
4L
I/O
5L
N/C
GND
I/O
0R
I/O
1R
I/O
2R
I/O
4R
I/O
5R
2720 drw 02
I/O
3R
I/O
6R
I/O
6L
I/O
7L
1
48
2
47
3
46
4
45
5
44
6
43
7
42
8
41
9 IDT7134 40
10 P48–1 39
&
11
38
C48–2 37
12
DIP
13
36
14
35
TOP
15 VIEW
(3)
34
16
33
17
32
18
31
19
30
20
29
21
28
22
27
23
26
24
25
CE
R
A
0L
CE
L
R/
R
A
11R
A
10R
W
INDEX
7 6 5
A
1L
A
2L
A
3L
A
4L
A
5L
A
6L
A
7L
A
8L
A
9L
I/O
0L
I/O
1L
I/O
2L
I/O
3L
8
9
10
11
12
13
14
15
16
17
18
4 3
2
OE
R
1
52 51 50 49 48 47
46
45
44
43
42
R/
V
CC
A
10R
A
10L
A
11L
CE
R
OE
L
V
CC
CE
L
W
R
W
OE
R
A
0R
A
1R
A
2R
A
3R
A
4R
A
5R
A
6R
A
7R
A
8R
A
9R
N/C
I/O
7R
A
0R
A
1R
A
2R
A
3R
A
4R
A
5R
A
6R
A
7R
A
8R
A
9R
I/O
7R
I/O
6R
I/O
5R
I/O
4R
I/O
3R
I/O
2R
I/O
1R
I/O
0R
IDT7134
J52-1
PLCC
TOP VIEW (3)
41
40
39
38
37
36
19
35
34
20
21 22 23 24 25 26 27 28 29 30 31 32 33
2720 drw 03
A
10L
A
11L
R/
L
W
R
A
11R
A
10R
V
CC
A
0L
OE
R
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
Rating
Com’l.
–0.5 to +7.0
Mil.
–0.5 to +7.0
Unit
V
V
TERM
(2)
Terminal Voltage
with Respect
to Ground
T
A
T
BIAS
T
STG
P
T
(3)
I
OUT
Operating
Temperature
Temperature
Under Bias
Storage
Temperature
Power Dissipation
DC Output Current
OE
L
A
1L
A
2L
A
3L
A
4L
A
5L
A
6L
A
7L
A
8L
A
9L
I/O
0L
I/O
1L
I/O
2L
1
7
42
8
41
9
40
10
39
IDT7134
11
38
L48-1
&
12
37
F48-1
LCC/Flatpack
13
36
14
35
TOP VIEW
(3)
15
34
16
33
17
32
18
31
19 20 21 22 23 24 25 26 27 28 29 30
GND
I/O
0R
I/O
1R
I/O
2R
I/O
3R
I/O
4R
I/O
5R
I/O
3L
I/O
4L
I/O
6L
I/O
7L
I/O
5
L
6 5 4 3 2
48 47 46 45 44 43
R/
INDEX
CE
R
CE
L
W
A
0R
A
1R
A
2R
A
3R
A
4R
A
5R
A
6R
A
7R
A
8R
A
9R
I/O
7R
I/O
6R
0 to +70
–55 to +125
–55 to +125
1.5
50
–55 to +125
–65 to +135
–65 to +150
1.5
50
°C
°C
°C
W
mA
2720 tbl 01
2720 drw 04
NOTES:
1. All Vcc pins must be connected to the power supply.
2. All GND pins must be connected to the ground supply.
3. This text does not indicate orientation of actual part-marking.
NOTES:
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. V
TERM
must not exceed Vcc + 0.5V for more than 25%of the cycle time or
10 ns maximum, and is limited to < 20mA for the period of V
TERM
> Vcc
+0.5V.
CAPACITANCE
(1)
(T
A
= +25°C, f = 1.0MHz)
Symbol
C
IN
C
OUT
Parameter
Input Capacitance
Output Capacitance
Conditions
(2)
V
IN
= 3dv
V
OUT
= 3dv
Max.
11
11
Unit
pF
pF
2720 tbl 02
NOTES:
1. This parameter is determined by device characterization but is not
production tested.
2. 3dv references the interpolated capacitance when the input and output
signals switch from 0V to 3V and from 3V to 0V.
6.04
2
IDT7134SA/LA
HIGH-SPEED 4K x 8 DUAL-PORT STATIC RAM
MILITARY AND COMMERCIAL TEMPERATURE RANGES
RECOMMENDED OPERATING
TEMPERATURE AND SUPPLY VOLTAGE
Grade
Military
Commercial
Ambient
Temperature
–55°C to +125°C
0°C to +70°C
GND
0V
0V
V
CC
5.0V
±
10%
5.0V
±
10%
2720 tbl 03
RECOMMENDED DC OPERATING CONDITIONS
Symbol
V
CC
GND
V
IH
V
IL
Parameter
Supply Voltage
Ground
Input High Voltage
Input Low Voltage
Min.
4.5
0
2.2
–0.5
(1)
Typ.
5.0
0
—
—
Max.
5.5
0
6.0
(2)
0.8
Unit
V
V
V
V
2720 tbl 04
NOTES:
1. V
IL
(min.) > –1.5V for pulse width less than 10ns.
2. V
TERM
must not exceed Vcc + 0.5V.
DC ELECTRICAL CHARACTERISTICS OVER THE
OPERATING TEMPERATURE AND SUPPLY VOLTAGE
(V
CC
= 5V
±
10%)
IDT7134SA
Symbol
|I
LI
|
|I
LO
|
V
OL
V
OH
Parameter
Input Leakage Current
(1)
Output Leakage Current
Output Low Voltage
Output High Voltage
Test Conditions
V
CC
= 5.5V, V
IN
= 0V to V
CC
Min.
—
—
—
—
2.4
Max.
10
10
0.4
0.5
—
IDT7134LA
Min.
—
—
—
—
2.4
Max.
5
5
0.4
0.5
—
Unit
µA
µA
V
V
V
2720 tbl 05
CE
= V
IH
, V
OUT
= 0V to V
CC
I
OL
= 6mA
I
OL
= 8mA
I
OH
= –4mA
NOTE:
1. At Vcc
≤
2.0V input leakages are undefined.
DC ELECTRICAL CHARACTERISTICS OVER THE
OPERATING TEMPERATURE AND SUPPLY VOLTAGE RANGE
(1)
(V
CC
= 5.0V
±
10%)
7134X20
(4)
Symbol
I
CC
Parameter
Dynamic Operating
Current
(Both Ports Active)
I
SB1
Standby Current
(Both Ports—TTL
Level Inputs)
I
SB2
Standby Current
(One Port—TTL
Level Inputs)
I
SB3
Test Conditions
7134X25
7134X35
7134X45
7134X55
7134X70
Version Typ.
(2)
Max. Typ.
(2)
Max. Typ.
(2)
Max. Typ.
(2)
Max. Typ.
(2)
Max. Typ.
(2)
Max. Unit
MIL.
S
L
—
—
170
170
—
—
25
25
—
—
105
105
—
—
1.0
0.2
—
—
105
105
—
—
280
240
—
—
110
80
—
—
180
150
—
—
15
4.5
—
—
170
130
160
160
160
160
25
25
25
25
95
95
95
95
1.0
0.2
1.0
0.2
95
95
95
95
310 150
260 150
280 150
220 150
100
80
80
50
210
170
180
140
30
10
15
4.0
210
150
170
120
25
25
25
25
85
85
85
85
1.0
0.2
1.0
0.2
85
85
85
85
300 140
250 140
260 140
210 140
75
55
75
45
200
160
170
130
30
10
15
4.0
190
130
160
110
25
25
25
25
75
75
75
75
1.0
0.2
1.0
0.2
75
75
75
75
280
240
240
200
70
50
70
40
190
150
160
130
30
10
15
4.0
180
120
150
100
140
140
140
140
25
25
25
25
75
75
75
75
1.0
0.2
1.0
0.2
75
75
75
75
270
220
240
200
70
50
70
40
180
150
160
130
30
10
15
4.0
170
120
150
100
140 270
140 220
140 240
140 200
25
25
25
25
75
75
75
75
1.0
0.2
1.0
0.2
75
75
75
75
70
50
70
40
180
150
160
130
30
10
15
4.0
170
120
150
100
mA
mA
mA
mA
mA
CE
= V
IL
Outputs Open
f = f
MAX(3)
COM’L. S
L
S
L
CE
L
and
CE
R
= V
IH
MIL.
f = f
MAX(3)
CE
"A"
= V
IL
and
CE
"B"
= V
IH
COM’L. S
L
MIL.
S
L
Active Port Outputs COM’L. S
Open, f = f
MAX(3)
L
S
L
Full Standby Current Both Ports
CE
L
and MIL.
(Both Ports—All
CE
R
≥
V
CC
- 0.2V
CMOS Level Inputs) V
IN
≥
V
CC
- 0.2V or
V
IN
≤
0.2V, f = 0
(3)
COM’L. S
L
MIL.
S
L
I
SB4
Full Standby Current One Port
CE
"A"
or
(One Port—All
CE
"B"
≥
V
CC
- 0.2V
CMOS Level Inputs) V
IN
≥
V
CC
- 0.2V or COM’L. S
L
V
IN
≤
0.2V
Active Port Outputs
Open, f = f
MAX(3)
NOTES:
2720 tbl 06
1. “X” in part number indicates power rating (SA or LA).
2. V
CC
= 5V, T
A
= +25°C for typical, and parameters are not production tested.
3. f
MAX
= 1/t
RC
= All inputs cycling at f = 1/t
RC
(except Output Enable). f = 0 means no address or control lines change. Applies only to inputs at CMOS level
standby I
SB3.
4. (Commercial only) 0°C to +70°C temperature range.
6.04
3
IDT7134SA/LA
HIGH-SPEED 4K x 8 DUAL-PORT STATIC RAM
MILITARY AND COMMERCIAL TEMPERATURE RANGES
DATA RETENTION CHARACTERISTICS OVER ALL TEMPERATURE RANGES
(LA Version Only) V
LC
= 0.2V, V
HC
= V
CC
- 0.2V
Symbol
V
DR
I
CCDR
t
CDR(3)
t
R(3)
Parameter
VCC for Data Retention
Data Retention Current
Test Condition
V
CC
= 2V
Min.
2.0
MIL.
COM’L.
—
—
0
t
RC(2)
Typ.
(1)
—
100
100
—
—
Max.
—
4000
1500
—
—
ns
ns
2720 tbl 07
Unit
V
µA
CE
≥
V
HC
V
IN
≥
V
HC
or < V
LC
Chip Deselect to Data Retention Time
Operation Recovery Time
NOTES:
1. V
CC
= 2V, T
A
= +25°C, and are not production tested.
2. t
RC
= Read Cycle Time.
3. This parameter is guaranteed by device characterization, but not production tested.
DATA RETENTION WAVEFORM
DATA RETENTION MODE
V
CC
4.5V
t
CDR
V
DR
≥
2V
V
DR
4.5V
t
R
V
IH
2720 drw 05
CE
V
IH
AC TEST CONDITIONS
Input Pulse Levels
Input Rise/Fall Times
Input Timing Reference Levels
Output Reference Levels
Output Load
GND to 3.0V
5ns
1.5V
1.5V
Figures 1 and 2
2720 tbl 08
+5V
1250Ω
DATA
OUT
775Ω
30pF *
2720 drw 06
+5V
1250Ω
DATA
OUT
775Ω
5pF *
2720 drw 07
Figure 1. AC Output Test Load
Figure 2. Output Test Load
(for t
LZ
, t
HZ
, t
WZ
, t
OW
)
*Including scope and jig
6.04
4
IDT7134SA/LA
HIGH-SPEED 4K x 8 DUAL-PORT STATIC RAM
MILITARY AND COMMERCIAL TEMPERATURE RANGES
AC ELECTRICAL CHARACTERISTICS OVER THE
OPERATING TEMPERATURE AND SUPPLY VOLTAGE
(4)
7134X20
(3)
Symbol
READ CYCLE
t
RC
t
AA
t
ACE
t
AOE
t
OH
t
LZ
t
HZ
t
PU
t
PD
Read Cycle Time
Address Access Time
Chip Enable Access Time
Output Enable Access Time
Output Hold from Address Change
Output Low-Z Time
(1, 2)
Output High-Z Time
(1, 2)
Chip Enable to Power Up Time
(2)
Chip Disable to Power Down Time
(2)
20
—
—
—
0
0
—
0
—
—
20
20
15
—
—
15
—
20
25
—
—
—
0
0
—
0
—
—
25
25
15
—
—
15
—
25
35
—
—
—
0
0
—
0
—
—
35
35
20
—
—
20
—
35
ns
ns
ns
ns
ns
ns
ns
ns
ns
Parameter
Min.
Max.
7134X25
Min.
Max.
7134X35
Min.
Max.
Unit
AC ELECTRICAL CHARACTERISTICS OVER THE
OPERATING TEMPERATURE AND SUPPLY VOLTAGE
(4)
(CONT'D)
7134X45
Symbol
READ CYCLE
t
RC
t
AA
t
ACE
t
AOE
t
OH
t
LZ
t
HZ
t
PU
t
PD
Read Cycle Time
Address Access Time
Chip Enable Access Time
Output Enable Access Time
Output Hold from Address Change
Output Low-Z Time
(1, 2)
Output High-Z Time
(1, 2)
Chip Enable to Power Up Time
(2)
Chip Disable to Power Down Time
(2)
45
—
—
—
0
5
—
0
—
—
45
45
25
—
—
20
—
45
55
—
—
—
0
5
—
0
—
—
55
55
30
—
—
25
—
50
70
—
—
—
0
5
—
0
—
—
70
70
40
—
—
30
—
50
ns
ns
ns
ns
ns
ns
ns
ns
ns
2720 tbl 09
7134X55
Min.
Max.
7134X70
Min.
Max.
Unit
Parameter
Min.
Max.
NOTES:
1. Transition is measured
±500mV
from Low or High-impedance voltage with the Output Test Load (Figure 2).
2. This parameter is guaranteed by device characterization, but is not production tested.
3. (Commercial only) 0°C to +70°C temperature range only.
4. “X” in part number indicates power rating (SA or LA).
TIMING WAVEFORM OF READ CYCLE NO. 1, EITHER SIDE
(1, 2, 3)
t
RC
ADDRESS
t
AA
t
OH
DATA
OUT
PREVIOUS DATA VALID
t
OH
DATA VALID
2720 drw 08
NOTES:
1. Timing depends on which signal is asserted last,
OE
or
CE
.
2. Timing depends on which signal is de-asserted first,
OE
or
CE
.
3. R/
W
= V
IH
.
6.04
5
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