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SN74ACT2229DW Folha de dados(PDF) 9 Page - Texas Instruments

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Nome de Peças SN74ACT2229DW
Descrição Electrónicos  DUAL 64 횞 1, DUAL 256 횞 1 FIRST-IN, FIRST-OUT MEMORIES
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

SN74ACT2229DW Folha de dados(HTML) 9 Page - Texas Instruments

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SN74ACT2227, SN74ACT2229
DUAL 64
× 1, DUAL 256 × 1
FIRST-IN, FIRST-OUT MEMORIES
SCAS220C – JUNE 1992 – REVISED OCTOBER 1997
9
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
timing requirements over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Figures 1 through 4)
MIN
MAX
UNIT
fclock
Clock frequency
60
MHz
t
Pulse duration
1WRTCLK, 2WRTCLK high or low
5
ns
tw
Pulse duration
1RDCLK, 2RDCLK high or low
5
ns
1D before 1WRTCLK
↑ and 2D before 2WRTCLK↑
4.5
1WRTEN before 1WRTCLK
↑ and 2WRTEN before 2WRTCLK↑
4.5
tsu
Setup time
1RDEN before 1RDCLK
↑ and 2RDEN before 2RDCLK↑
4
ns
1RESET low before 1WRTCLK
↑ and 2RESET low before 2WRTCLK↑†
6
1RESET low before 1RDCLK
↑ and 2RESET low before 2RDCLK↑†
6
1D after 1WRTCLK
↑ and 2D after 2WRTCLK↑
0
1WRTEN after 1WRTCLK
↑ and 2WRTEN after 2WRTCLK↑
0
th
Hold time
1RDEN after 1RDCLK
↑ and 2RDEN after 2RDCLK↑
0
ns
1RESET low after 1WRTCLK
↑ and 2RESET low after 2WRTCLK↑†
6
1RESET low after 1RDCLK
↑ and 2RESET low after 2RDCLK↑†
6
† Requirement to count the clock edge as one of at least four needed to reset a FIFO
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature, CL = 50 pF (unless otherwise noted) (see Figure 4)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
MIN
MAX
UNIT
fmax
1WRTCLK, 2WRTCLK,
or 1RDCLK, 2RDCLK
60
MHz
tpd
1RDCLK
↑, 2RDCLK↑
1Q, 2Q
2
9
ns
tpd
1WRTCLK
↑, 2WRTCLK↑
1IR, 2IR
1
8
ns
tpd
1RDCLK
↑, 2RDCLK↑
1OR, 2OR
1
8
ns
t d
1WRTCLK
↑, 2WRTCLK↑
1AF/AE 2AF/AE
3
14
ns
tpd
1RDCLK
↑, 2RDCLK↑
1AF/AE, 2AF/AE
3
14
ns
tPLH
1WRTCLK
↑, 2WRTCLK↑
1HF 2HF
2
12
ns
tPHL
1RDCLK
↑, 2RDCLK↑
1HF, 2HF
3
14
ns
tPLH
1RESET 2RESET low
1AF/AE, 2AF/AE
1
17
ns
tPHL
1RESET, 2RESET low
1HF, 2HF
1
18
ns
ten
1OE, 2OE
1Q, 2Q
0
8
ns
tdis
1OE, 2OE
1Q, 2Q
0
8
ns


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