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MC145828B Folha de dados(PDF) 3 Page - Motorola, Inc

Nome de Peças MC145828B
Descrição Electrónicos  LOOK-AHEAD CARRY BLOCK
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Fabricante Electrônico  MOTOROLA [Motorola, Inc]
Página de início  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

MC145828B Folha de dados(HTML) 3 Page - Motorola, Inc

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MOTOROLA CMOS LOGIC DATA
3
MC14582B
SWITCHING CHARACTERISTICS* (CL = 50 pF, TA = 25_C)
Characteristic
Symbol
VDD
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
tPLH, tPHL = (1.7 ns/pF) CL + 260 ns
tPLH, tPHL = (0.66 ns/pF) CL + 107 ns
tPLH, tPHL = (0.5 ns/pF) CL + 85 ns
tPLH,
tPHL
5.0
10
15
345
140
110
690
280
220
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. Dynamic Power Dissipation
Test Circuit and Waveform
20 ns
Vin
VDD
VSS
10%
90%
50%
20 ns
VARIABLE
WIDTH
Vin
Cin
CL
VDD
G0
G1
G2
G3
P0
P1
P2
P3
CL
CL
CL
CL
Cn+x
Cn+y
Cn+z
P
G
PULSE
GENERATOR
Figure 2. Source Current Test Circuit
Figure 3. Sink Current Test Circuit
Cin
VDD
G0
G1
G2
G3
P0
P1
P2
P3
Cn+x
Cn+y
Cn+z
P
G
Cin
VDD
G0
G1
G2
G3
P0
P1
P2
P3
Cn + x
Cn + y
Cn + z
P
G
VSS
8
EXTERNAL
POWER
SUPPLY
VSS
8
EXTERNAL
POWER
SUPPLY
16
16
IOH
IOL
Vout = VOH
Vout = VOL


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