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参数资料
| 型号： | MC14008BCP |
| 厂商： | MOTOROLA INC |
| 元件分类： | 算术逻辑单元 |
| 英文描述： | 4000/14000/40000 SERIES, 4-BIT ADDER/SUBTRACTOR, PDIP16 |
| 封装： | PLASTIC, DIP-16 |
| 文件页数： | 3/8页 |
| 文件大小： | 255K |
| 代理商： | MC14008BCP |
MOTOROLA CMOS LOGIC DATA
39
MC14008B
SWITCHING CHARACTERISTICS* (CL = 50 pF, TA = 25_C)
Characteristic
Symbol
VDD
Vdc
Min
Typ #
Max
Unit
Output Rise and Fall Time
tTLH, tTHL = (1.5 ns/pF) CL + 25 ns
tTLH, tTHL = (0.75 ns/pF) CL + 12.5 ns
tTLH, tTHL = (0.55 ns/pF) CL + 9.5 ns
tTLH,
tTHL
5.0
10
15
—
100
50
40
200
100
80
ns
Propagation Delay Time
Sum in to Sum Out
tPLH, tPHL = (1.7 ns/pF) CL + 315 ns
tPLH, tPHL = (0.66 ns/pF) CL + 127 ns
tPLH, tPHL = (0.5 ns/pF) CL + 90 ns
Sum In to Carry Out
tPLH, tPHL = (1.7 ns/pF) CL + 220 ns
tPLH, tPHL = (0.66 ns/pF) CL + 112 ns
tPLH, tPHL = (0.5 ns/pF) CL + 85 ns
Carry In to Sum Out
tPLH, tPHL = (1.7 ns/pF) CL + 290 ns
tPLH, tPHL = (0.66 ns/pF) CL + 122 ns
tPLH, tPHL = (0.5 ns/pF) CL + 90 ns
Carry In to Carry Out
tPLH, tPHL = (1.7 ns/pF) CL + 85 ns
tPLH, tPHL = (0.66 ns/pF) CL + 42 ns
tPLH, tPHL = (0.5 ns/pF) CL + 30 ns
tPLH, tPHL
5.0
10
15
5.0
10
15
5.0
10
15
5.0
10
15
—
400
160
115
305
145
110
375
155
115
170
75
55
800
320
230
610
290
220
750
310
230
340
150
110
ns
* The formulas given are for the typical characteristics only at 25
_C.
#Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance.
Figure 1. Typical Source Current
Characteristics Test Circuit
Figure 2. Typical Sink Current
Characteristics Test Circuit
VDD = – VGS
Vout
16
B4
A4
B3
A3
B2
A2
B1
A1
Cin
S4
S3
S2
S1
Cout
IOH
8
VSS
EXTERNAL
POWER
SUPPLY
EXTERNAL
POWER
SUPPLY
IOL
VDD = VGS
Vout
16
B4
A4
B3
A3
B2
A2
B1
A1
Cin
S4
S3
S2
S1
Cout
8
VSS
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