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Integrated Device Technology Electronic Components Datasheet

IDT71V428S Datasheet

CMOS Static RAM

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3.3V CMOS Static RAM
4 Meg (1M x 4-Bit)
IDT71V428S
IDT71V428L
Features
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
Description
The IDT71V428 is a 4,194,304-bit high-speed Static RAM orga-
nized as 1M x 4. It is fabricated using IDT’s high-perfomance, high-
reliability CMOS technology. This state-of-the-art technology, com-
bined with innovative circuit design techniques, provides a cost-
effective 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.
A0
A19
ADDRESS
DECODER
4,194,304-BIT
MEMORY ARRAY
I/O0 – I/O3
4
4
WE
OE CONTROL
CS LOGIC
©2004 Integrated Device Technology, Inc.
1
I/O CONTROL
4
3623 drw 01
SEPTEMBER 2004
DSC-3623/06


Integrated Device Technology Electronic Components Datasheet

IDT71V428S Datasheet

CMOS Static RAM

No Preview Available !

IDT71V428S, IDT71V428L, 3.3V CMOS Static RAM
4 Meg (1M x 4-Bit)
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 SO32-3
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
A19
A18
A17
A16
A15
OE
I/O 3
VSS
VDD
I/O 2
A14
A13
A12
A11
A10
NC
SOJ
3623 drw 02
Top View
Commercial and Industrial Temperature Ranges
Pin Description
A0 – A19
CS
WE
OE
I/O0 - I/O3
VDD
VSS
Address Inputs
Chip Select
Write Enable
Output Enable
Data Input/Output
3.3V Power
Ground
Input
Input
Input
Input
I/O
Power
Gnd
3623 tbl 02
Capacitance
(TA = +25°C, f = 1.0MHz, SOJ package)
Symbol
Parameter(1)
Conditions Max. Unit
CIN Input Capacitance
VIN = 3dV
7 pF
CI/O I/O Capacitance
VOUT = 3dV
8 pF
NOTE:
3623 tbl 03
1. This parameter is guaranteed by device characterization, but not production tested.
Truth Table(1,2)
CS OE WE
I/O
Function
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)
NOTES:
1. H = VIH, L = VIL, x = Don't care.
2. VLC = 0.2V, VHC = VCC -0.2V.
3. Other inputs VHC or VLC.
3623 tbl 01
6.242


Part Number IDT71V428S
Description CMOS Static RAM
Maker IDT
Total Page 9 Pages
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