AD8156
Rev. 0 | Page 4 of 20
TIMING SPECIFICATIONS
VTTI = VTTO = VCC = 3.3 V, VEE = 0 V, RL = 50 Ω, differential output swing = 800 mV, ac-coupled, data rate = 6.25 Gbps, PRBS 223 1,
VIN = 1 V p-p differential, TA = 25°C, unless otherwise noted.
Table 2.
Parameter
Symbol
Min
Typ
Max
Unit
FIRST RANK WRITE CYCLE
CS to WE Setup Time
tCSW
0
ns
Address Setup Time
tASW
0
ns
Data Setup Time
tDSW
1
ns
WE to CS Hold Time
tCHW
0
ns
Address Hold Time
tAHW
0
ns
Data Hold Time
tDHW
0
ns
WE Pulse Width
tWP
10
ns
SECOND RANK UPDATE CYCLE
CS to UPD Setup Time
tCSU
0
ns
UPD to CS Hold Time
tCHU
0
ns
Output Enable
tUOE
20
ns
Output Switch
tUOT
10
ns
Output Disable
tUOD
20
ns
UPD Pulse Width
tUW
10
ns
TRANSPARENT WRITE AND UPDATE CYCLE
Output Enable
tWOE
35
50
ns
Output Toggle
tWOT
25
45
ns
Output Disable
tWOD
25
45
ns
SECOND RANK READBACK CYCLE
CS to RE Setup Time
tCSR
0
ns
RE to CS Hold Time
tCHR
0
ns
ADDR from RE
tRHA
5
ns
DATA from RE
tRDE
15
ns
Access Time
tAA
15
30
ns
RE to Read Disable
tRDD
50
ns
ASYNCHRONOUS RESET
Output Disable
tTOD
10
25
ns
RST Pulse Width
tTW
10
ns