Serial bus digital switching characteristics, Timing diagrams, Figure 2. data output timing diagram – Rainbow Electronics LM70 User Manual
Page 5: Figure 3. tri-state data output timing diagram, Figure 4. data input timing diagram, Logic electrical characteristics, Lm70
Logic Electrical Characteristics
(Continued)
Serial Bus Digital Switching Characteristics
Unless otherwise noted, these specifications apply for V
+
= 2.65V to 3.6V for the LM70-3 and V
+
= 4.5V to 5.5V for the
LM70-5, C
L
(load capacitance) on output lines = 100 pF unless otherwise specified. Boldface limits apply for T
A
= T
J
= T
MIN
to T
MAX
; all other limits T
A
= T
J
= +25˚C, unless otherwise noted.
Symbol
Parameter
Conditions
Typical
Limits
Units
(Limit)
t
1
SC (Clock) Period
0.16
DC
µs (min)
(max)
t
2
CS Low to SC (Clock) High Set-Up Time
100
ns (min)
t
3
CS Low to Data Out (SO) Delay
70
ns (max)
t
4
SC (Clock) Low to Data Out (SO) Delay
70
ns (max)
t
5
CS High to Data Out (SO) TRI-STATE
200
ns (min)
t
6
SC (Clock) High to Data In (SI) Hold Time
60
ns (min)
t
7
Data In (SI) Set-Up Time to SC (Clock) High
30
ns (min)
Timing Diagrams
10122304
FIGURE 2. Data Output Timing Diagram
10122305
FIGURE 3. TRI-STATE Data Output Timing Diagram
10122306
FIGURE 4. Data Input Timing Diagram
LM70
www.national.com
5