HY5PS1G831LF-C4 HYNIX [Hynix Semiconductor], HY5PS1G831LF-C4 Datasheet - Page 13

• Manufacturer Part Number: HY5PS1G831LF-C4
• Description: 1Gb DDR2 SDRAM
• Manufacturer: HYNIX [Hynix Semiconductor]

Rev. 1.2 / Dec 2006
3.3 Output Buffer Characteristics
3.3.1 Output AC Test Conditions
3.3.2 Output DC Current Drive
3.3.3 OCD defalut characteristics
Note 1: Absolute Specifications (0°C ≤ T
Note 2: Impedance measurement condition for output source dc current: VDDQ = 1.7V; VOUT = 1420mV;
(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.
Note 3: Mismatch is absolute value between pull-up and pull-dn, both are measured at same temperature and voltage.
Note 4: Slew rate measured from vil(ac) to vih(ac).
1.
2.
3.
4.
Output impedance
Output impedance step size for OCD cali-
bration
Pull-up and pull-down mismatch
Output slew rate
1. The VDDQ of the device under test is referenced.
Symbol
Symbol
I
I
V
OH(dc)
OL(dc)
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.
OTR
DDQ
DDQ
= 1.7 V; V
= 1.7 V; V
Output Timing Measurement Reference Level
Output Minimum Source DC Current
Output Minimum Sink DC Current
Description
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
OL(dc)
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
CASE
- V
must be less than 21 ohm for values of V
Parameter
DDQ
Sout
≤ +tbd°C; VDD = +1.8V ±0.1V, VDDQ = +1.8V ±0.1V)
)/I
OH
must be less than 21 ohm for values of V
IL
max minus a noise margin are delivered to an SSTL_18 receiver. The
12.6
1.5
Min
0
0
TT
Nom
18
-
SSTL_18 Class II
0.5 * V
SSTl_18
OUT
- 13.4
13.4
between 0 V and 280 mV.
DDQ
23.4
1.5
Max
4
5
OUT
1HY5PS1G431(L)F
1HY5PS1G831(L)F
between V
ohms
ohms
ohms
V/ns
Unit
Units
Units
mA
mA
DDQ
V
and V
1,4,5,6,7,8
DDQ
1,2,3
Notes
Notes
1, 3, 4
2, 3, 4
Notes
1,2
6
1
- 280
13