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| 型號(hào)： | IDT72421L25L |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | DRAM |
| 英文描述： | CMOS SyncFIFO 64 X 9, 256 x 9, 512 x 9, 1024 X 9, 2048 X 9 and 4096 x 9 |
| 中文描述： | 64 X 9 OTHER FIFO, 15 ns, CQCC32 |
| 封裝： | CERAMIC, LCC-32 |
| 文件頁(yè)數(shù)： | 1/19頁(yè) |
| 文件大?。?/td> | 214K |
| 代理商： | IDT72421L25L |
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IDT72421/72201/72211/72221/72231/72241 CMOS SyncFIFO
64 x 9, 256 x 9, 512 x 9, 1024 x 9, 2048 x 9 and 4096 x 9
MILITARY AND COMMERCIAL TEMPERATURE RANGES
Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
DECEMBER 1995
1996 Integrated Device Technology, Inc
DSC-2655/6
For latest information contact IDT's web site at www.idt.com or fax-on-demand at 408-492-8391.
IDT72201
IDT72211
IDT72221
IDT72231
IDT72241
CMOS SyncFIFO
64 X 9, 256 x 9, 512 x 9,
1024 X 9, 2048 X 9 and 4096 x 9
FEATURES:
64 x 9-bit organization (IDT72421)
256 x 9-bit organization (IDT72201)
512 x 9-bit organization (IDT72211)
1024 x 9-bit organization (IDT72221)
2048 x 9-bit organization (IDT72231)
4096 x 9-bit organization (IDT72241)
12 ns read/write cycle time (IDT72421/72201/72211)
15 ns read/write cycle time (IDT72221/72231/72241)
Read and write clocks can be independent
Dual-Ported zero fall-through time architecture
Empty and Full flags signal FIFO status
Programmable Almost-Empty and Almost-Full flags can
be set to any depth
Programmable Almost-Empty and Almost-Full flags
default to Empty+7, and Full-7, respectively
Output enable puts output data bus in high-impedance
state
Advanced submicron CMOS technology
Available in 32-pin plastic leaded chip carrier (PLCC),
ceramic leadless chip carrier (LCC), and 32-pin Thin
Quad Flat Pack (TQFP)
For Through-Hole product please see the IDT72420/
72200/72210/72220/72230/72240 data sheet
Military product compliant to MIL-STD-883, Class B
FUNCTIONAL BLOCK DIAGRAM
DESCRIPTION:
The IDT72421/72201/72211/72221/72231/72241
SyncFIFO
are very high-speed, low-power First-In, First-
Out (FIFO) memories with clocked read and write controls.
The IDT72421/72201/72211/72221/72231/72241 have a 64,
256, 512, 1024, 2048, and 4096 x 9-bit memory array,
respectively. These FIFOs are applicable for a wide variety of
data buffering needs such as graphics, local area networks
and interprocessor communication.
These FIFOs have 9-bit input and output ports. The input
port is controlled by a free-running clock (WCLK), and two
write enable pins (
WEN1
, WEN2). Data is written into the
Synchronous FIFO on every rising clock edge when the write
enable pins are asserted. The output port is controlled by
another clock pin (RCLK) and two read enable pins (
REN1
,
REN2
). The read clock can be tied to the write clock for single
clock operation or the two clocks can run asynchronous of one
another for dual-clock operation. An output enable pin (
OE
) is
provided on the read port for three-state control of the output.
The Synchronous FIFOs have two fixed flags, Empty (
EF
)
and Full (
FF
). Two programmable flags, Almost-Empty (
PAE
)
and Almost-Full (
PAF
), are provided for improved system
control. The programmable flags default to Empty+7 and Full-
7 for
PAE
and
PAF
, respectively. The programmable flag
offset loading is controlled by a simple state machine and is
initiated by asserting the load pin (
LD
).
The IDT72421/72201/72211/72221/72231/72241 are
fabricated using IDT’s high-speed submicron CMOS
technology. Military grade product is manufactured in
compliance with the latest revision of MIL-STD-883, Class B.
WCLK
WEN1
WEN2
D
0
- D
8
LD
OFFSET REGISTER
INPUT REGISTER
RAM ARRAY
64 x 9, 256 x 9,
512 x 9, 1024 x 9,
2048 x 9, 4096 x 9
WRITE CONTROL
LOGIC
WRITE POINTER
RESET LOGIC
OUTPUT REGISTER
OE
RS
Q
0
- Q
8
RCLK
REN1
REN2
READ CONTROL
LOGIC
READ POINTER
FLAG
LOGIC
EF
PAE
PAF
FF
2655 drw 01
SyncFIFO is a trademark and the IDT logo is a registered trademark of Integrated Device Technology, Inc.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| IDT72421L25LB | CMOS SyncFIFO 64 X 9, 256 x 9, 512 x 9, 1024 X 9, 2048 X 9 and 4096 x 9 |
| IDT72421L25PFB | CMOS SyncFIFO 64 X 9, 256 x 9, 512 x 9, 1024 X 9, 2048 X 9 and 4096 x 9 |
| IDT72421L35J | CMOS SyncFIFO 64 X 9, 256 x 9, 512 x 9, 1024 X 9, 2048 X 9 and 4096 x 9 |
| IDT72421L35JB | CMOS SyncFIFO 64 X 9, 256 x 9, 512 x 9, 1024 X 9, 2048 X 9 and 4096 x 9 |
| IDT72421L35L | CMOS SyncFIFO 64 X 9, 256 x 9, 512 x 9, 1024 X 9, 2048 X 9 and 4096 x 9 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IDT72421L25PF | 功能描述:IC FIFO 64X9 SYNC 25NS 32-TQFP RoHS:否 類別:集成電路 (IC) >> 邏輯 - FIFO 系列:7200 標(biāo)準(zhǔn)包裝:80 系列:7200 功能:同步 存儲(chǔ)容量:18.4K（1K x 18） 數(shù)據(jù)速率:- 訪問(wèn)時(shí)間:10ns 電源電壓:4.5 V ~ 5.5 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:64-LQFP 供應(yīng)商設(shè)備封裝:64-TQFP（10x10） 包裝:托盤(pán) 其它名稱:72225LB10TF |
| IDT72421L25PF8 | 功能描述:IC FIFO 64X9 SYNC 25NS 32-TQFP RoHS:否 類別:集成電路 (IC) >> 邏輯 - FIFO 系列:7200 標(biāo)準(zhǔn)包裝:80 系列:7200 功能:同步 存儲(chǔ)容量:18.4K（1K x 18） 數(shù)據(jù)速率:- 訪問(wèn)時(shí)間:10ns 電源電壓:4.5 V ~ 5.5 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:64-LQFP 供應(yīng)商設(shè)備封裝:64-TQFP（10x10） 包裝:托盤(pán) 其它名稱:72225LB10TF |
| IDT72421L25PFI | 功能描述:IC FIFO 64X9 SYNC 25NS 32-TQFP RoHS:否 類別:集成電路 (IC) >> 邏輯 - FIFO 系列:7200 標(biāo)準(zhǔn)包裝:80 系列:7200 功能:同步 存儲(chǔ)容量:18.4K（1K x 18） 數(shù)據(jù)速率:- 訪問(wèn)時(shí)間:10ns 電源電壓:4.5 V ~ 5.5 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:64-LQFP 供應(yīng)商設(shè)備封裝:64-TQFP（10x10） 包裝:托盤(pán) 其它名稱:72225LB10TF |
| IDT72421L25PFI8 | 功能描述:IC FIFO 64X9 SYNC 25NS 32-TQFP RoHS:否 類別:集成電路 (IC) >> 邏輯 - FIFO 系列:7200 標(biāo)準(zhǔn)包裝:80 系列:7200 功能:同步 存儲(chǔ)容量:18.4K（1K x 18） 數(shù)據(jù)速率:- 訪問(wèn)時(shí)間:10ns 電源電壓:4.5 V ~ 5.5 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:64-LQFP 供應(yīng)商設(shè)備封裝:64-TQFP（10x10） 包裝:托盤(pán) 其它名稱:72225LB10TF |
| IDT72510L35J | 制造商:Integrated Device Technology Inc 功能描述: |
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