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AD9854AST Datasheet(PDF) 35 Page - Analog Devices

Part # AD9854AST
Description  CMOS 300 MSPS Quadrature Complete DDS
PDF  52 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD9854AST Datasheet(HTML) 35 Page - Analog Devices

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AD9854
Rev. E | Page 35 of 52
A<5:0>
D<7:0>
A1
D1
A2
D2
A3
D3
tRDHOZ
tRDLOV
tAHD
tADV
SPECIFICATION
VALUE
DESCRIPTION
tADV
tAHD
tRDLOV
tRDHOZ
15ns
5ns
15ns
10ns
ADDRESS TO DATA VALID TIME (MAXIMUM)
ADDRESS HOLD TIME TO RD SIGNAL INACTIVE (MINIMUM)
RD LOW TO OUTPUT VALID (MAXIMUM)
RD HIGH TO DATA THREE-STATE (MAXIMUM)
RD
Figure 52. Parallel Port Read Timing Diagram
D<7:0>
D1
D2
D3
SPECIFICATION
VALUE
DESCRIPTION
tASU
tDSU
tADH
tDHD
8.0ns
3.0ns
ADDRESS SETUP TIME TO WR SIGNAL ACTIVE
DATA SETUP TIME TO WR SIGNAL ACTIVE
0ns
0ns
ADDRESS HOLD TIME TO WR SIGNAL INACTIVE
DATA HOLD TIME TO WR SIGNAL INACTIVE
tWRLOW
tWRHIGH
tWR
2.5ns
WR SIGNAL MINIMUM LOW TIME
7ns
10.5ns
WR SIGNAL MINIMUM HIGH TIME
MINIMUM WRITE TIME
A<5:0>
A1
A2
A3
tASU
tAHD
tWRHIGH
tWRLOW
tDHD
tDSU
tWR
WR
Figure 53. Parallel Port Write Timing Diagram



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