SWITCHING CHARACTERISTICS — MC145026*, MC145027, and MC145028 (CL = 50 pF, TA = 25°C)
Symbol
Characteristic
Figure
No.
VDD
Guaranteed Limit
Min
Max
tTLH, tTHL Output Transition Time
4,8
5.0
—
200
10
—
100
15
—
80
tr
Din Rise Time — Decoders
5
5.0
—
15
10
—
15
15
—
15
tf
Din Fall Time — Decoders
5
5.0
—
15
10
—
5.0
15
—
4.0
fosc
Encoder Clock Frequency
6
5.0
0.001
2.0
10
0.001
5.0
15
0.001
10
f
Decoder Frequency — Referenced to Encoder Clock
12
5.0
1.0
240
10
1.0
410
15
1.0
450
tw
TE Pulse Width — Encoders
7
5.0
65
—
10
30
—
15
20
—
* Also see next Switching Characteristics table for 2.5 V specifications.
Unit
ns
µs
µs
MHz
kHz
ns
SWITCHING CHARACTERISTICS — MC145026 (CL = 50 pF, TA = 25°C)
Symbol
tTLH, tTHL
fosc
tw
Characteristic
Output Transition Time
Encoder Clock Frequency
TE Pulse Width
Figure
No.
4, 8
6
7
VDD
2.5
2.5
2.5
Guaranteed Limit
Min
Max
Unit
—
450
ns
1.0
250
kHz
1.5
—
µs
SWITCHING CHARACTERISTICS — SC41343 and SC41344 (CL = 50 pF, TA = 25°C)
Symbol
tTLH, tTHL
Characteristic
Output Transition Time
tr
Din Rise Time
tf
Din Fall Time
f
Decoder Frequency — Referenced to Encoder Clock
Figure
No.
4, 8
5
5
12
VDD
2.8
5.0
10
2.8
5.0
10
2.8
5.0
10
2.8
5.0
10
Guaranteed Limit
Min
Max
Unit
—
320
ns
—
200
—
100
—
15
µs
—
15
—
15
—
15
µs
—
15
—
5.0
1.0
100
kHz
1.0
240
1.0
410
MC145026•MC145027•MC145028•SC41343•SC41344
6
MOTOROLA