IS61QDB21M18A Datasheet, PDF (16/30 Pages) Integrated Silicon Solution, Inc – 512Kx36 and 1Mx18 configuration available

IS61QDB21M18A
IS61QDB251236A
Pin Capacitance
Parameter
Symbol
Input or output capacitance except D and Q pins
C_IN ,C_O
D and Q capacitance (D0–Dx, Q0-Qx)
C_DQ
°
Clocks Capacitance (K, K, C, C)
C_CLK
Note: these parameters are guaranteed by design and tested by a sample basis only.
Test Condition
Max Units
5
pF
6
pF
4
pF
PROGRAMMABLE IMPEDANCE OUTPUT DRIVER DC ELECTRICAL CHARACTERISTICS
(Over the Operating Temperature Range, V_DD=1.8V±5%, V_DDQ=1.5V/1.8V)
Parameter
Symbol
Min
Max
Units
Notes
Output Logic HIGH Voltage
V_OH
V_DDQ /2 -0.12
V_DDQ /2 + 0.12
V
1, 3
Output Logic LOW Voltage
V_OL
Notes:
1.
 VDDQ 

| IOH | ^{ 2 }
 RQ 

5
2.
 ^VDDQ 
| IOL | ^{ 2 }
 ^RQ 
5
3. Parameter Tested with RQ=250Ω and V_DDQ=1.5V
V_DDQ /2 -0.12
V_DDQ /2 + 0.12
V
2, 3
AC Test Conditions
(Over the Operating Temperature Range, V_DD=1.8V±5%)
Parameter
Symbol
Output Drive Power Supply Voltage
V_DDQ
Input Logic HIGH Voltage
V_IH
Input Logic LOW Voltage
V_IL
Input Reference Voltage
V_REF
Input Rise Time
T_R
Input Fall Time
T_F
Output Timing Reference Level
Clock Reference Level
Output Load Conditions
Conditions
1.5
1.25
0.25
0.75
2
2
V_DDQ/2
0.75
Units
V
V
V
V
V/ns
V/ns
V
V
Notes:
1. See AC Test Loading.
2. Parameters are tested with RQ=250Ω and VDDQ=1.5V, but ISSI devices are able to support V_DDQ=1.4V to V_DD
Notes
2
1, 2
Integrated Silicon Solution, Inc.- www.issi.com
16
Rev. B
10/02/2014