mc145028 Freescale Semiconductor, Inc, mc145028 Datasheet - Page 3

• Manufacturer Part Number: mc145028
• Description: Mc145027 Encoder And Decoder Pair
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
A1
A2
A3
A4
A5
TE
1
2
3
4
5
A6/D6
A7/D7
A8/D8
A9/D9
5
14
SEQUENCER CIRCUIT
11
A1
A2
A3
A4
A5
MC145026, MC145027, MC145028 Technical Data, Rev. 4
4
Figure 2. MC145026 Encoder Block Diagram
Figure 3. MC145027 Decoder Block Diagram
OSCILLATOR
RING COUNTER AND 1-OF-9 DECODER
10
R
1
2
3
4
5
6
7
9
S
ENABLE
12
3-PIN
3
9
AND
CONTROL
8
C
R
2
LOGIC
TC
TC
13
7
1
6
5
DIVIDER
4
C
÷ 4
1
3
7
EXTRACTOR
2
R
DATA
1
1
6
10
DATA SELECT
BUFFER
C
R
2
2
AND
DETECTOR
V
V
TRINARY
DD
SS
= PIN 8
= PIN 16
9
V
V
DD
SS
D
in
15
= PIN 8
= PIN 16
15
14
13
12
11
D
D6
D7
D8
D9
OUT
VT
Introduction
3