SDA9255 Datasheet, PDF (35/45 Pages) Siemens Semiconductor Group – SRC-Scan Rate Converter SDA9255

SDA 9255
3.1 Recommended Operating Conditions
Parameter
Symbol
Limit Values Unit Remark
min. nom. max.
Supply voltages
V_DD
Ambient temperature T_A
All TTL Inputs
4.75 5
0
25
5.25 V
70 °C
H-input voltage
V_IH
2.0
L-input voltage
V_IL
0
All TTL Outputs
V_DD V
0.8 V
H-output voltage
V_QH
2.4
L-output voltage
V_QL
INPUT/OUTPUT: SDA
V
0.4 V
I_QH = -2.0 mA
I_QL = 3.0 mA
L-output voltage
V_QL
Clock TTL Input LL2CLK
0.5 V
at I_QL = max
Clock frequency
1/T
27
MHz see figure 19
Low time
t_WL
12
ns
High time
t_WH
12
ns
Rise time
t_TLH
5
ns
Fall time
t_THL
5
ns
I²C Bus (All values are referred to min (V_IH) and max (V_IL)), f_SCL = 400 KHz
H-input voltage
V_IH
3
V_DD V
see figure 17
L-input voltage
V_IL
0
1.5 V
see figure 18
SCL clock frequency f_SCL
0
400 kHz
Inactive time before t_BUF
1.3
µs
start of transmission
Set-up time start
t_{SU; STA} 0.6
µs
condition
Hold time start
t_{HD; STA} 0.6
µs
condition
SCL low time
t_LOW
1.3
µs
SCL high time
t_HIGH
0.6
µs
Set-up time DATA t_{SU; DAT} 100
ns
Hold time DATA
t_{HD; DAT} 0
µs
Semiconductor Group
33
1998-02-01