SDA9257 Datasheet, PDF (21/36 Pages) Siemens Semiconductor Group – Clock Sync Generator

SDA 9257
Characteristics (cont’d)
T_A = 25 °C (all voltages are referred to V_SS)
Parameter
Symbol
Limit Values
min. typ. max.
Fall time
t_F
0.3
(acknowledge)
SDA upon
V_AL
0
0.4
acknowledge
Unit
µs
V
Test Condition
from 3 to 1 V
I_AL = 3 mA
CKE Input
L-input voltage
V_IL
0
H-input voltage
V_IH
2
Input capacitance
C_I
Input leakage current I_I
Input frequency
f_CKE
Transition times
t_R, t_F
0.8
V
V_DD
V
10
pF
7
µA
V_I = 5.5 V
35
MHZ
5
ns
Crystal Connections X1, X2
Crystal frequency
f_c
Crystal type
Equivalent parallel C C_O
Crystal resonant
Z_R
impedance
Pin capacitance
C_I
External capacitance C_ext
20.44 20.50 20.56
Fundamental crystal
7
25
MHZ
pF
Ω
Overall tolerance incl.
temperature drift
7
pF
30
pF
VS, HS, H1, H2, BLN, I1 and RES Outputs
L-output voltage
V_QL
0
H-output voltage
V_QH
2.4
Load capacitance
C_L
Transition times
t_R, t_F
Output delay time
t_QD
Output hold time
t_QH
6
0.4
V
V_DD
V
50
pF
5
ns
25
ns
ns
I = 1.6 mA
I = – 0.5 mA
C_L = 30 pF
Semiconductor Group
202