GS8128218GD-250I Datasheet, PDF (15/37 Pages) GSI Technology – 8M x 18, 4M x 36 144Mb S/DCD Sync Burst SRAMs

GS8128218/36(GB/GD)-400/333/250/200
V_DD2 Range Logic Levels
Parameter
Input High Voltage
Input Low Voltage
Note:
V_IHQ (max) is voltage on V_DDQ pins plus 0.3 V.
Symbol
V_IH
V_IL
Min.
0.6*V_DD
–0.3
Typ.
Max.
Unit
—
V_DD + 0.3
V
—
0.3*V_DD
V
Recommended Operating Temperatures
Parameter
Symbol
Min.
Typ.
Max.
Unit
Junction Temperature (Commercial Range Versions)
T_J
0
25
85
C
Junction Temperature (Industrial Range Versions)*
T_J
–40
25
100
C
Note:
* The part numbers of Industrial Temperature Range versions end with the character “I”. Unless otherwise noted, all performance specifications
quoted are evaluated for worst case in the temperature range marked on the device.
Thermal Impedance
Package
Test PCB
Substrate
JA (C°/W)
Airflow = 0 m/s
 JA (C°/W)
Airflow = 1 m/s
 JA (C°/W)
Airflow = 2 m/s
JB (C°/W)  JC (C°/W)
119 BGA
4-layer
21.37
17.56
16.42
10.01
1.97
165 BGA
4-layer
20.70
17.51
16.44
9.14
2.96
Notes:
1. Thermal Impedance data is based on a number of samples from multiple lots and should be viewed as a typical number.
2. Please refer to JEDEC standard JESD51-6.
3. The characteristics of the test fixture PCB influence reported thermal characteristics of the device. Be advised that a good thermal path to
the PCB can result in cooling or heating of the RAM depending on PCB temperature.
Undershoot Measurement and Timing
Overshoot Measurement and Timing
V_IH
20% tKC
V_DD + 2.0 V
V_SS
50%
50%
V_DD
V_SS – 2.0 V
20% tKC
V_IL
Note:
Input Under/overshoot voltage must be –2 V > Vi < V_DDn+2 V not to exceed 4.6 V maximum, with a pulse width not to exceed 20% tKC.
Rev: 1.01 5/2017
15/36
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
© 2015, GSI Technology