Datasheet

T
T
T
S
S
S
3
3
3
2
2
2
M
M
M
L
L
L
S
S
S
6
6
6
4
4
4
V
V
V
6
6
6
D
D
D
168PIN PC133 Unbuffered DIMM
256MB With 16Mx8 CL3
Transcend Information Inc.
8
AC CHARACTERISTICS (AC operating conditions unless otherwise noted)
Refer to the individual component, not the whole module.
Parameter Symbol Min Max Unit Note
CLK cycle time tCC 7.5 1000 ns ns
CLK to valid output delay tSAC 5.4 ns 1, 2
Output data hold time tOH 3.0 ns 2
CLK high pulse width tCH 2.5 ns 3
CLK low pulse width tCL 2.5 ns 3
Input setup time tSS 1.5 ns 3
Input hold time tSH 0.8 ns 3
CLK to output in Low-Z tSLZ 1 ns 2
CLK to output in Hi-Z tSHZ 5.4 ns
Note:
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.