IDT IDT71V428S20Y 3.3v cmos static ram 4 meg (1m x 4-bit) Datasheet

3.3V CMOS Static RAM
4 Meg (1M x 4-Bit)
IDT71V428S
IDT71V428L
Features
Description
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The IDT71V428 is a 4,194,304-bit high-speed Static RAM organized as 1M x 4. It is fabricated using IDT’s high-perfomance, highreliability CMOS technology. This state-of-the-art technology, combined with innovative circuit design techniques, provides a costeffective solution for high-speed memory needs.
The IDT71V428 has an output enable pin which operates as fast as
5ns, with address access times as fast as 10ns. All bidirectional inputs
and outputs of the IDT71V428 are LVTTL-compatible and operation is
from a single 3.3V supply. Fully static asynchronous circuitry is used,
requiring no clocks or refresh for operation.
The IDT71V428 is packaged in a 32-pin, 400 mil Plastic SOJ.
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1M x 4 advanced high-speed CMOS Static RAM
JEDEC Center Power / GND pinout for reduced noise
Equal access and cycle times
— Commercial and Industrial: 10/12/15ns
Single 3.3V power supply
One Chip Select plus one Output Enable pin
Bidirectional data inputs and outputs directly
LVTTL-compatible
Low power consumption via chip deselect
Available in 32-pin, 400 mil plastic SOJ package.
Functional Block Diagram
A0
•
•
•
•
•
•
ADDRESS
DECODER
4,194,304-BIT
MEMORY ARRAY
A19
I/O0 – I/O3
4
4
•
I/O CONTROL
4
WE
OE
CS
CONTROL
LOGIC
3623 drw 01
SEPTEMBER 2004
1
©2004 Integrated Device Technology, Inc.
DSC-3623/06
IDT71V428S, IDT71V428L, 3.3V CMOS Static RAM
4 Meg (1M x 4-Bit)
Commercial and Industrial Temperature Ranges
Pin Configuration
A0
A1
A2
A3
A4
CS
I/O 0
VDD
VSS
I/O 1
WE
A5
A6
A7
A8
A9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Description
SO32-3
SOJ
Top View
A19
A18
A17
A16
A15
OE
I/O 3
VSS
VDD
I/O 2
A14
A13
A12
A11
A10
NC
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
A0 – A19
Address Inputs
Input
CS
Chip Select
Input
WE
Write Enable
Input
OE
Output Enable
Input
I/O 0 - I/O 3
Data Input/Output
VDD
3.3V Power
VSS
Ground
I/O
Power
Gnd
3623 tbl 02
Capacitance
(TA = +25°C, f = 1.0MHz, SOJ package)
Symbol
3623 drw 02
Parameter(1)
CIN
Input Capacitance
CI/O
I/O Capacitance
Conditions
Max.
Unit
VIN = 3dV
7
pF
VOUT = 3dV
8
pF
3623 tbl 03
NOTE:
1. This parameter is guaranteed by device characterization, but not production tested.
Truth Table(1,2)
CS
OE
WE
I/O
L
L
H
DATAOUT
Read Data
L
X
L
DATAIN
Write Data
L
H
H
High-Z
Output Disabled
H
X
X
High-Z
Deselected - Standby (ISB)
VHC(3)
X
X
High-Z
Deselected - Standby (ISB1)
Function
3623 tbl 01
NOTES:
1. H = VIH, L = VIL, x = Don't care.
2. VLC = 0.2V, VHC = V CC -0.2V.
3. Other inputs ≥VHC or ≤VLC.
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2
IDT71V428S, IDT71V428L, 3.3V CMOS Static RAM
4 Meg (1M x 4-Bit)
Commercial and Industrial Temperature Ranges
Recommended Operating
Temperature and Supply Voltage
Absolute Maximum Ratings(1)
Symbol
Rating
Value
Unit
VDD
Supply Voltage Relative to
VSS
-0.5 to +4.6
V
VIN, VOUT
Terminal Voltage Relative
to VSS
-0.5 to VDD+0.5
V
TBIAS
Temperature Under Bias
-55 to +125
o
TSTG
Storage Temperature
-55 to +125
o
PT
Power Dissipation
1
W
IOUT
DC Output Current
50
mA
Grade
Temperature
VSS
VDD
Commercial
0°C to +70°C
0V
See Below
Industrial
–40°C to +85°C
0V
See Below
3623 tbl 05
C
C
Recommended DC Operating
Conditions
Symbol
3623 tbl 04
NOTE:
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.
Parameter
VDD
Supply Voltage
VSS
Ground
VIH
Input High Voltage
Typ.
Max.
Unit
3.0
3.3
3.6
V
0
0
0
2.0
____
(2)
Input Low Voltage
VIL
Min.
VDD+0.3
____
-0.3
V
(1)
V
0.8
V
3623 tbl 06
NOTES:
1. VIH (max.) = VDD+2V for pulse width less than 5ns, once per cycle.
2. VIL (min.) = –2V for pulse width less than 5ns, once per cycle.
DC Electrical Characteristics
(VDD = Min. to Max., Commercial and Industrial Temperature Ranges)
IDT71V428
Symbol
|ILI|
|ILO|
VOL
VOH
Parameter
Test Condition
Min.
Max.
Unit
Input Leakage Current
VDD = Max., VIN = VSS to VDD
___
5
µA
Output Leakage Current
VDD = Max., CS = VIH, VOUT = VSS to VDD
___
5
µA
IOL = 8mA, V DD = Min.
___
0.4
V
2.4
___
V
Output Low Voltage
Output High Voltage
IOH = -4mA, V DD = Min.
3623 tbl 07
DC Electrical Characteristics(1,2,3)
(VDD = Min. to Max., VLC = 0.2V, VHC = VDD – 0.2V)
71V428S/L10
Symbol
ICC
ISB
ISB1
Parameter
71V428S/L12
71V428S/L15
Com'l.
Ind.(5)
Com'l.
Ind.
Com'l.
Ind.
Unit
Dynam ic Operating Current
CS ≤ VLC, Outputs Open, V DD = Max., f = f MAX(4)
S
150
150
140
140
130
130
mA
L
140
—
130
130
120
120
mA
Dynamic Standby Power Supply Current
CS ≥ VHC, Outputs Open, V DD = Max., f = f MAX(4)
S
60
60
50
50
40
40
mA
L
40
—
35
35
30
30
mA
Full Standby Power Supply Current (static)
CS ≥ VHC, Outputs Open, V DD = Max., f = 0(4)
S
20
20
20
20
20
20
mA
L
10
—
10
10
10
10
NOTES:
1. All values are maximum guaranteed values.
2. All inputs switch between 0.2V (Low) and VDD - 0.2V (High).
3. Power specifications are preliminary.
4. fMAX = 1/tRC (all address inputs are cycling at fMAX); f = 0 means no address input lines are changing.
5. Standard power 10ns (S10) speed grade only.
6.42
3
mA
3623 tbl 08
IDT71V428S, IDT71V428L, 3.3V CMOS Static RAM
4 Meg (1M x 4-Bit)
Commercial and Industrial Temperature Ranges
AC Test Conditions
GND to 3.0V
Input Pulse Levels
Input Rise/Fall Times
1.5ns
Input Timing Reference Levels
1.5V
Output Reference Levels
1.5V
See Figure 1, 2 and 3
AC Test Load
3623 tbl 09
AC Test Loads
3.3V
+1.5V
320Ω
DATAOUT
50Ω
I/O
Z0 = 50Ω
5pF*
350Ω
30pF
3623 drw 03
3623 drw 04
Figure 1. AC Test Load
* Including jig and scope capacitance.
Figure 2. AC Test Load
(for tCLZ, tOLZ, t CHZ, tOHZ, tOW, and tWHZ)
7
•
6
∆tAA, tACS
(Typical, ns) 5
4
•
3
•
2
•
1
•
•
•
8 20 40 60 80 100 120 140 160 180 200
CAPACITANCE (pF)
Figure 3. Output Capacitive Derating
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4
3623 drw 05
IDT71V428S, IDT71V428L, 3.3V CMOS Static RAM
4 Meg (1M x 4-Bit)
AC Electrical Characteristics
Commercial and Industrial Temperature Ranges
(VDD = 3.3V ± 10%, Commercial and Industrial Temperature Ranges)
71V428S/L10(2)
71V428S/L12
71V428S/L15
Min.
Max.
Min.
Max.
Min.
Max.
Unit
Read Cycle Time
10
____
12
____
15
____
ns
Address Access Time
____
10
____
12
____
15
ns
Chip Select Access Time
____
10
____
12
____
15
ns
4
____
4
____
4
____
ns
Symbol
Parameter
READ CYCLE
tRC
tAA
tACS
tCLZ
(1)
Chip Select to Output in Low-Z
tCHZ(1)
Chip Deselect to Output in High-Z
____
5
____
6
____
7
ns
tOE
Output Enable to Output Valid
____
5
____
6
____
7
ns
tOLZ (1)
Output Enable to Output in Low-Z
0
____
0
____
0
____
ns
tOHZ (1)
Output Disable to Output in High-Z
____
5
____
6
____
7
ns
tOH
Output Hold from Address Change
4
____
4
____
4
____
ns
tPU(1)
Chip Select to Power Up Time
0
____
0
____
0
____
ns
Chip Deselect to Power Down Time
____
10
____
12
____
15
ns
tWC
Write Cycle Time
10
____
12
____
15
____
ns
tAW
Address Valid to End of Write
8
____
8
____
10
____
ns
tCW
Chip Select to End of Write
8
____
8
____
10
____
ns
tAS
Address Set-up Time
0
____
0
____
0
____
ns
tWP
Write Pulse Width
8
____
8
____
10
____
ns
tWR
Write Recovery Time
0
____
0
____
0
____
ns
tDW
Data Valid to End of Write
6
____
6
____
7
____
ns
tDH
Data Hold Time
0
____
0
____
0
____
ns
tOW(1)
Output Active from End of Write
3
____
3
____
3
____
ns
Write Enable to Output in High-Z
____
6
____
7
____
7
ns
tPD(1)
WRITE CYCLE
tWHZ
(1)
3623 tbl 10
NOTES:
1. This parameter guaranteed with the AC load (Figure 2) by device characterization, but is not production tested.
2. 0°C to +70°C temperature range only for low power 10ns (L10) speed grade.
6.42
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IDT71V428S, IDT71V428L, 3.3V CMOS Static RAM
4 Meg (1M x 4-Bit)
Commercial and Industrial Temperature Ranges
Timing Waveform of Read Cycle No. 1
(1)
tRC
ADDRESS
tAA
OE
tOE
tOLZ
CS
tCLZ
DATAOUT
VDD SUPPLY ICC
CURRENT ISB
(5)
(5)
tACS
(3)
tCHZ
HIGH IMPEDANCE
(5)
tOHZ (5)
DATAOUT VALID
tPD
tPU
3623 drw 06
Timing Waveform of Read Cycle No. 2(1,2,4)
tRC
ADDRESS
tAA
tOH
DATAOUT
tOH
PREVIOUS DATAOUT VALID
DATAOUT VALID
3623 drw 07
NOTES:
1. WE is HIGH for Read Cycle.
2. Device is continuously selected, CS is LOW.
3. Address must be valid prior to or coincident with the later of CS transition LOW; otherwise tAA is the limiting parameter.
4. OE is LOW.
5. Transition is measured ±200mV from steady state.
6.42
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IDT71V428S, IDT71V428L, 3.3V CMOS Static RAM
4 Meg (1M x 4-Bit)
Commercial and Industrial Temperature Ranges
Timing Waveform of Write Cycle No.1 (WE Controlled Timing)(1,2,4)
tWC
ADDRESS
tAW
CS
tWP (2)
tAS
tWR
WE
tWHZ
DATAOUT
(5)
tOW
(5)
HIGH IMPEDANCE
(3)
(5)
(3)
tDH
tDW
DATAIN
tCHZ
DATAIN VALID
3623 drw 08
Timing Waveform of Write Cycle No.2 (CS Controlled Timing)(1,4)
tWC
ADDRESS
tAW
CS
tAS
tWR
tCW
WE
tDW
DATAIN
tDH
DATAIN VALID
3623 drw 09
NOTES:
1. A write occurs during the overlap of a LOW CS and a LOW WE.
2. OE is continuously HIGH. If during a WE controlled write cycle OE is LOW, tWP must be greater than or equal to tWHZ + tDW to allow the I/O drivers to turn off and data to
be placed on the bus for the required tDW. If OE is HIGH during a WE controlled write cycle, this requirement does not apply and the minimum write pulse is as short as
the specified tWP.
3. During this period, I/O pins are in the output state, and input signals must not be applied.
4. If the CS LOW transition occurs simultaneously with or after the WE LOW transition, the outputs remain in a high-impedance state.
5. Transition is measured ±200mV from steady state.
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IDT71V428S, IDT71V428L, 3.3V CMOS Static RAM
4 Meg (1M x 4-Bit)
Commercial and Industrial Temperature Ranges
Ordering Information
IDT 71V428
Device
Type
X
X
Die
Power
Revision
XX
Speed
XXX
Package
X
X
Process/
Temperature
Range
Blank Commercial (0°C to +70°C)
I
Industrial (–40°C to +85°C)
G
Restricted hazardous substance device
Y
32-pin 400-mil SOJ (S0323)
10*
12
15
Speed in nanoseconds
S
L
Standard Power
Low Power
Blank First Generation or current stepping being shipped
Y
Second Generation die step
* Commercial only for low power (L10) speed grade.
3623 drw 10
6.42
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IDT71V428S, IDT71V428L, 3.3V CMOS Static RAM
4 Meg (1M x 4-Bit)
Commercial and Industrial Temperature Ranges
Datasheet Document History
8/31/99
9/29/99
11/26/02
07/31/03
09/30/04
Pg. 2
Pg. 4
Pg. 7
Pg. 9
Pg. 1–9
Pg. 8
Pg. 8
Pg. 8
Updated to new format
Added footnote for VHC in Truth Table
Added footnote on jig and scope capacitance in Figure 2
Revised footnote on Write Cycle No. 1 diagram
Added Datasheet Document History
Added Industrial temperature range offerings
Updated ordering information for die revision
Updated note, L10 speed grade commercial temperature only and updated die stepping from YF to Y.
Added "Restricted hazardous substance device" to ordering information.
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6.42
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