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K4S281632C Datasheet(PDF) 8 Page - Samsung semiconductor

Part No. K4S281632C
Description  128Mbit SDRAM 2M x 16Bit x 4 Banks Synchronous DRAM LVTTL
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Manufacturer  SAMSUNG [Samsung semiconductor]
Direct Link  http://www.samsung.com/Products/Semiconductor
Logo SAMSUNG - Samsung semiconductor

K4S281632C Datasheet(HTML) 8 Page - Samsung semiconductor

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K4S281632C
Rev. 0.0 Mar. 2000
CMOS SDRAM
DQ BUFFER OUTPUT DRIVE CHARACTERISTICS
Parameter
Symbol
Condition
Min
Typ
Max
Unit
Notes
Output rise time
trh
Measure in linear
region : 1.2V ~ 1.8V
1.37
4.37
Volts/ns
3
Output fall time
tfh
Measure in linear
region : 1.2V ~ 1.8V
1.30
3.8
Volts/ns
3
Output rise time
trh
Measure in linear
region : 1.2V ~ 1.8V
2.8
3.9
5.6
Volts/ns
1,2
Output fall time
tfh
Measure in linear
region : 1.2V ~ 1.8V
2.0
2.9
5.0
Volts/ns
1,2
1. Rise time specification based on 0pF + 50
Ω to VSS, use these values to design to.
2. Fall time specification based on 0pF + 50
Ω to VDD, use these values to design to.
3. Measured into 50pF only, use these values to characterize to.
4. All measurements done with respect to VSS.
Notes :
1. Parameters depend on programmed CAS latency.
2. If clock rising time is longer than 1ns, (tr/2-0.5)ns should be added to the parameter.
3. Assumed input rise and fall time (tr & tf) = 1ns.
If tr & tf is longer than 1ns, transient time compensation should be considered,
i.e., [(tr + tf)/2-1]ns should be added to the parameter.
Notes :
AC CHARACTERISTICS (AC operating conditions unless otherwise noted)
Parameter
Symbol
- 75
- 1H
- 1L
Unit
Note
Min
Max
Min
Max
Min
Max
CLK cycle time
CAS latency=3
tCC
7.5
1000
10
1000
10
1000
ns
1
CAS latency=2
-
10
12
CLK to valid
output delay
CAS latency=3
tSAC
5.4
6
6
ns
1,2
CAS latency=2
-
6
7
Output data
hold time
CAS latency=3
tOH
3
3
3
ns
2
CAS latency=2
-
3
3
CLK high pulse width
tCH
2.5
3
3
ns
3
CLK low pulse width
tCL
2.5
3
3
ns
3
Input setup time
tSS
1.5
2
2
ns
3
Input hold time
tSH
0.8
1
1
ns
3
CLK to output in Low-Z
tSLZ
1
1
1
ns
2
CLK to output
in Hi-Z
CAS latency=3
tSHZ
5.4
6
6
ns
CAS latency=2
-
6
7


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