CD40108BMS 查看數據表（PDF） - Intersil
零件编号
产品描述 (功能)
生产厂家
CD40108BMS Datasheet PDF : 11 Pages
| |||
CD40108BMS
Block Diagram
CL
WE
W0 W1 R0A R1A R0B R1B
DEC
DEC
DEC
ENABLE A
D0
DATA
D1
INPUT
D2
D3
4X4
MEMORY
Q0 A
Q1 A
Q2 A
Q3 A
Q0 B
Q1 B
Q2 B
Q3 B
WORD A
OUTPUT
WORD B
OUTPUT
FIGURE 1.
TRUTH TABLE
ENABLE B
WRITE WRITE
CLOCK ENABLE 1
1
S1
1
S1
X
X
X
1
0
WRITE
0
S2
S2
X
0
READ
1A
S1
S1
X
0
READ
0A
S2
S2
X
1
0
0
0
0
1
X
X
X
X
1
0
X
X
X
X
X
1 = High Level
0 = Low Level
S! and S2 refer to input states of either 1 or 0
READ
1B
S1
S1
X
1
1
0
X
READ ENABLE ENABLE
0B
A
B
DN
QnA
QnB
S2
1
1
1
1
1
S2
1
1
0
0
0
X
0
0
X
Z
Z
0
1
1 Dn to word Word 1 Word 2
0
out
out
0
1
1 Word 0 Word 1 Word 2
not altered out
out
1
1
1
X Word 2 Word 1
out
out
X
1
1
X
NC
NC
X = Don’t Care
Z = High Impedance
Typical Performance Characteristics
AMBIENT TEMPERATURE (TA) = +25oC
30
GATE-TO-SOURCE VOLTAGE (VGS) = 15V
25
20
15
10V
10
5
5V
0
5
10
15
DRAIN-TO-SOURCE VOLTAGE (VDS) (V)
FIGURE 2. TYPICAL OUTPUT LOW (SINK) CURRENT
CHARACTERISTICS
AMBIENT TEMPERATURE (TA) = +25oC
15.0
GATE-TO-SOURCE VOLTAGE (VGS) = 15V
12.5
10.0
10V
7.5
5.0
2.5
5V
0
5
10
15
DRAIN-TO-SOURCE VOLTAGE (VDS) (V)
FIGURE 3. MIMIMUM OUTPUT LOW (SINK) CURRENT
CHARACTERISTICS
7-31
Share Link: 