AL4CS211/221/231/241/251
512, 1K, 2K, 4K, 8K x 9 Synchronous FIFOs
Applications
-
-
-
-
-
-
-
-
Multimedia System
ATM Switches
Routers
Cable Modems
Wireless Base Stations
SONET(Synchronous Optical Network)
Multiplexers
TBC(Time Base Corrector)
Hard Disk cache memory
Features
•
•
•
•
•
•
•
•
•
•
•
•
High performance, low-power, FIFO(First-
In First-Out) memory
512 x9 bit I/O port (AL4CS211)
1K x9 bit 1/O port (AL4CS221)
2K x9 bit I/O port (AL4CS231)
4K x9 bit I/O port (AL4CS241)
8K x9 bit I/O port (AL4CS251)
High clock speed (133MHz)
Fully independent read/write access
Empty, Full, and programmable Almost
Empty, Almost Full flags
Output enable control (data skipping)
3.3V power with 5V signal tolerant input
Standard 32-pin TQFP and PLCC
Description
The
AL4CS211/AL4CS221/AL4CS231/
AL4CS241/AL4CS251
series
memory
products are high-performance, low-power
9-bit read/write FIFO (First-In-First-Out)
memory chips. They are specially designed
to buffer high speed streaming data for a
wide range of communication applications,
such as optical disk controllers, Local Area
Networks (LANs), SONET (Synchronous
Optical Network).
Ordering Information
Part number
Package
Power Supply
AL4CS211, AL4CS221,
AL4CS231, AL4CS241, AL4CS251
32-pin plastic TQFP and PLCC
+3.3V
±10%
24
23
22
21
20
19
18
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
17
13
16
14
15
15
12
11
10
9
8
7
6
5
4
AVERLOGIC
14
16
13
17
12
18
11
19
10
20
9
21
22
AVERLOGIC
3
2
1
32
31
30
AL4CS2X1
x-xx-xx
xxxx
xxxx
AL4CS2X1
x-xx-xx
xxxx
xxxx
23
24
25
26
27
28
29
TQFP PACKAGE TOP VIEW
PLCC PACKAGE TOP VIEW