K4C89363AF
Notes
:
1. All voltages are referenced to Vss, VssQ.
2. V
REF
i s e x p e c t e d t o t r a c k v a r i a t i o n s i n V d d Q D C l e v e l o f t h e t r a n s m i t t i n g d e v i c e .
P e a k t o p e a k A C n o i s e o n V
REF
m a y n o t e x c e e d 鹵 2 % o f V
R E F
( D C ) .
3. Overshoot Iimit : V
IH
( m a x . ) = V d d Q + 0 . 7 V w i t h a p u l s e w i d t h < = 5 n s
4 . U n d e r s h o o t I i m i t : V
I L
( m i n . ) = - 0 . 7 V w i t h a p u l s e w i d t h < = 5 n s
5 . V
I H
( D C ) a n d V
IL
( D C ) a r e l e v e l s t o m a i n t a i n t h e c u r r e n t l o g i c s t a t e .
6 . V
I H
( A C ) a n d V
I L
( A C ) a r e l e v e l s t o c h a n g e t o t h e n e w l o g i c s t a t e .
7. V
ID
i s m a g n i t u d e o f t h e d i f f e r e n c e b e t w e e n C L K i n p u t l e v e l a n d C L K input level.
8. The value of Vx(AC) is expected to equal VddQ/2 of the transmitting device.
9 . V
I S O
m e a n s [ V
I C K
( C L K ) + V
I C K
(C L K ) ] / 2
10. Refer to the figure below.
CLK
V
X
V
X
V
X
V
X
V
X
V
ID
( A C )
CLK
V
I C K
V
ICK
V
I C K
V
I C K
V
SS
V
ID
( A C )
0 V Differential
V
ISO
V
ISO
(min)
V
I S O
(max)
V
SS
1 1 . I n t h e c a s e o f e x t e r n a l t e r m i n a t i o n , V T T ( T e r m i n a t i o n V o l t a g e ) s h o u l d b e g o n e i n t h e r a n g e o f V
R E F
( D C ) 鹵 0 . 0 4 V .
Pin Capacitance
Symbol
C
IN
C
INC
C
I/O
C
NC
(V
DD
= 2 . 5 V , V
D D Q
= 1 . 8 V , f = 1 M H z , T a = 2 5 C
)
Parameter
Min
1.5
1.5
2.5
-
Max
2.5
2.5
3.5
1.5
Delts
0.25
0.25
0.5
-
Units
pF
pF
pF
pF
o
Input Pin Capacitance
Clock Pin (CLK, C L K ) Capacitance
DQ, DS, QS Capacitance
NC Pin Capacitance
Note :
These parameters are periodically sampled and not 100% tested.
- 7 -
REV. 0.0 Nov. 2002