HY5PS1G421LM HYNIX [Hynix Semiconductor], HY5PS1G421LM Datasheet - Page 64

• Manufacturer Part Number: HY5PS1G421LM
• Description: 1Gb DDR2 SDRAM(DDP)
• Manufacturer: HYNIX [Hynix Semiconductor]

Rev. 0.2 / Oct. 2005
5.3 Output Buffer Levels
5.3.1 Output AC Test Conditions
5.3.2 Output DC Current Drive
5.3.3 OCD defalut characteristics
Note 1: Absolute Specifications (0°C ≤
Note 2: Impedance measurement condition for output source dc current: VDDQ = 1.7V; VOUT = 1420mV;
Note 3: Mismatch is absolute value between pull-up and pull-dn, both are measured at same temperature and
Note 4: Slew rate measured from vil(ac) to vih(ac).
Note 5: The absolute value of the slew rate as measured from DC to DC is equal to or greater than the slew
Note 6: DRAM output slew rate specification Table.
Note 7: DRAM output slew rate specification applies to 400MT/s & 533MT/s speed bins.
1.
2.
3.
4.
Output impedance
1. The VDDQ of the device under test is referenced.
Symbol
Symbol
Pull-up and pull-
Output slew rate
down mismatch
I
I
V
OH(dc)
OL(dc)
V
V
voltage.
rate as measured from AC to AC. This is guaranteed by design and characterization.
V
mV.
V
The dc value of V
The values of I
capability to ensure V
actual current values are derived by shifting the desired driver operating point (see Section 3.3) along a 21 ohm load line to define
a convenient driver current for measurement.
(VOUT-VDDQ)/Ioh must be less than 23.4 ohms for values of VOUT between VDDQ and VDDQ-280mV.
Impedance measurement condition for output sink dc current: VDDQ = 1.7V; VOUT = 280mV; VOUT/Iol
must be less than 23.4 ohms for values of VOUT between 0V and 280mV.
OTR
OH
OL
DDQ
DDQ
Description
= 1.7 V; V
= 1.7 V; V
Minimum Required Output Pull-up under AC Test Load
Maximum Required Output Pull-down under AC Test Load
Output Timing Measurement Reference Level
Output Minimum Source DC Current
Output Minimum Sink DC Current
OH(dc)
OUT
OUT
REF
= 1420 mV. (V
= 280 mV. V
and I
IH
applied to the receiving device is set to V
min plus a noise margin and V
Parameter
OL(dc)
Sout
are based on the conditions given in Notes 1 and 2. They are used to test device drive current
OUT
Parameter
Parameter
OUT
/I
OL
- V
must be less than 21 ohm for values of V
DDQ
T
12.6
CASE
1.5
Min
0
)/I
OH
≤ +95°C; VDD = +1.8V ±0.1V, VDDQ = +1.8V ±0.1V)
must be less than 21 ohm for values of V
IL
max minus a noise margin are delivered to an SSTL_18 receiver. The
Nom
18
-
TT
23.4
Max
4
5
SSTL_18 Class II
SSTl_18 Class II
V
V
0.5 * V
TT
OUT
TT
- 13.4
13.4
+ 0.603
- 0.603
ohms
ohms
V/ns
between 0 V and 280 mV.
DDQ
Unit
OUT
1HY5PS12421(L)M
HY5PS12821(L)M
1,2
1,4,5,6,7
1,2,3
between V
Notes
Units
Units
mA
mA
DDQ
V
V
V
and V
DDQ
1, 3, 4
2, 3, 4
Notes
Notes
1
- 280
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