參數(shù)資料
型號(hào): IDT72V261LA15TF
廠商: IDT, Integrated Device Technology Inc
文件頁(yè)數(shù): 12/27頁(yè)
文件大小: 0K
描述: IC FIFO SS 8192X18 15NS 64QFP
標(biāo)準(zhǔn)包裝: 80
系列: 72V
功能: 同步
存儲(chǔ)容量: 144K(8K x 18)
數(shù)據(jù)速率: 67MHz
訪問(wèn)時(shí)間: 15ns
電源電壓: 3 V ~ 3.6 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: 72V261LA15TF
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
IDT72V261LA/72V271LA
3.3 VOLT CMOS SuperSync FIFO 16,384 x 9 and 32,768 x 9
2
JANUARY 30, 2009
PIN CONFIGURATIONS
TQFP (PN64-1, ORDER CODE: PF)
STQFP (PP64-1, ORDER CODE: TF)
TOP VIEW
DESCRIPTION (CONTINUED)
PIN 1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
WEN
SEN
DC(1)
VCC
GND(2)
D8
D7
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
DNC(3)
GND
DNC(3)
VCC
DNC(3)
GND
DNC(3)
Q8
Q7
Q6
GND
WCLK
PRS
MRS
LD
FWFT/SI
GND
FF
/IR
PAF
HF
V
CC
PAE
EF
/OR
RCLK
REN
RT
OE
Q5
Q4
V
CC
Q3
Q2
GND
Q1
Q0
GND
D0
D1
D2
D3
D4
D5
D6
4673 drw 02
write controls. These FIFOs offer numerous improvements over previous
SuperSync FIFOs, including the following:
The limitation of the frequency of one clock input with respect to the
other has been removed. The Frequency Select pin (FS) has been
removed, thus it is no longer necessary to select which of the two clock
inputs, RCLK or WCLK, is running at the higher frequency.
The period required by the retransmit operation is now fixed and short.
The first word data latency period, from the time the first word is written
to an empty FIFO to the time it can be read, is now fixed and short.
(The variable clock cycle counting delay associated with the latency
period found on previous SuperSync devices has been eliminated on
this SuperSync family.)
SuperSync FIFOs are particularly appropriate for network, video, tele-
communications, data communications and other applications that need to
buffer large amounts of data.
The input port is controlled by a Write Clock (WCLK) input and a Write
Enable (
WEN) input. Data is written into the FIFO on every rising edge of
WCLK when
WEN is asserted. The output port is controlled by a Read
Clock (RCLK) input and Read Enable (
REN) input. Data is read from the
FIFO on every rising edge of RCLK when
REN is asserted. An Output
Enable (
OE) input is provided for three-state control of the outputs.
The frequencies of both the RCLK and the WCLK signals may vary from
0 to fMAX with complete independence. There are no restrictions on the
frequency of one clock input with respect to the other.
NOTES:
1. DC = Don’t Care. Must be tied to GND or VCC, cannot be left open.
2. This pin may either be tied to ground or left open.
3. DNC = Do Not Connect.
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