MC14549B Ver la hoja de datos (PDF) - ON Semiconductor
Número de pieza
componentes Descripción
Fabricante
MC14549B Datasheet PDF : 9 Pages
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MC14549B, MC14559B
TRUTH TABLES
MC14549B
MC14559B
SC SC(t−1) MR MR(t−1) Clock Action
SC SC(t−1) EOC Clock Action
X
X
X
X
None
X
X
X
None
X
X
1
X
Reset
1
0
0
Start
1
0
0
0
Start
Conversion
Conversion
X
1
0
Continue
1
X0
1
Start
Conversion
Conversion
0
0
0
Continue
1
1
0
0
Continue
Conversion
Conversion
0
X
1
Retain
0
X
0
X
Continue
Previous
Conversion
Result
Operation
1
X
1
Start
X = Don’t Care t−1 = State at Previous Clock
Conversion
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ELECTRICAL CHARACTERISTICS (Voltages Referenced to VSS)
− 55_C
25_C
125_C
Characteristic
VDD
Typ
Symbol Vdc Min Max Min (Note 2) Max Min Max Unit
Output Voltage
Vin = VDD or 0
“0” Level VOL
5.0
−
0.05
−
10
−
0.05
−
15
−
0.05
−
0
0.05
−
0.05 Vdc
0
0.05
−
0.05
0
0.05
−
0.05
Vin = 0 or VDD
“1” Level VOH
5.0 4.95
−
4.95
5.0
10 9.95
−
9.95
10
15 14.95
−
14.95
15
−
4.95
−
Vdc
−
9.95
−
−
14.95
−
Input Voltage (Note 2)
(VO = 4.5 or 0.5 Vdc)
(VO = 9.0 or 1.0 Vdc)
(VO = 13.5 or 1.5 Vdc)
“0” Level VIL
(VO = 0.5 or 4.5 Vdc)
(VO = 1.0 or 9.0 Vdc)
(VO = 1.5 or 13.5 Vdc)
“1” Level VIH
Output Drive Current
(VOH = 2.5 Vdc)
(VOH = 4.6 Vdc)
(VOH = 9.5 Vdc)
(VOH = 13.5 Vdc)
IOH
Source
(VOL = 0.4 Vdc)
(VOL = 0.5 Vdc)
(VOL = 1.5 Vdc)
Sink IOL
Q Outputs
(VOL = 0.4 Vdc)
(VOL = 0.5 Vdc)
(VOL = 1.5 Vdc)
Sink
Pin 5, 11 only
Input Current
Iin
Input Capacitance
Cin
Quiescent Current
IDD
(Per Package)
(Clock = 0 V,
Other Inputs = VDD or 0 V, Iout = 0 mA)
Total Supply Current (Note 3, 4)
IT
(Dynamic plus Quiescent,
Per Package) (CL = 50 pF on all
outputs, all buffers switching)
5.0
−
1.5
10
−
3.0
15
−
4.0
5.0
3.5
−
10
7.0
−
15
11
−
5.0 – 1.2
−
5.0 – 0.25
−
10 – 0.62
−
15 – 1.8
−
5.0 1.28
−
10
3.2
−
15
8.4
−
5.0 0.64
−
10
1.6
−
15
4.2
−
15
−
± 0.1
−
−
−
5.0
−
5.0
10
−
10
15
−
20
−
2.25
1.5
−
4.50
3.0
−
6.75
4.0
3.5
2.75
−
7.0
5.50
−
11
8.25
−
– 1.0
– 0.2
− 0.5
– 1.5
1.02
2.6
6.8
0.51
1.3
3.4
−
−
−
−
−
– 1.7
– 0.36
– 0.9
– 3.5
1.76
4.5
17.6
0.88
2.25
8.8
± 0.00001
5.0
0.005
0.010
0.015
−
−
−
−
−
−
−
−
−
−
± 0.1
7.5
5.0
10
20
−
−
−
3.5
7.0
11
– 0.7
– 0.14
– 0.35
– 1.1
0.72
1.8
4.8
0.36
0.9
2.4
−
−
−
−
−
1.5
3.0
4.0
−
−
−
−
−
−
−
−
−
−
−
−
−
± 1.0
−
150
300
600
Vdc
Vdc
mAd
c
mAd
c
mAd
c
mAdc
pF
mAdc
5.0
IT = (0.8 mA/kHz) f + IDD
mAdc
10
IT = (1.6 mA/kHz) f + IDD
15
IT = (2.4 mA/kHz) f + IDD
2. Noise immunity specified for worst−case input combination.
Noise Margin for both “1” and “0” level = 1.0 V min @ VDD = 5.0 V
= 2.0 V min @ VDD = 10 V
= 2.5 V min @ VDD = 15 V
3. To calculate total supply current at loads other than 50 pF: IT(CL) = IT(50 pF) + 3.5 x 10−3 (CL = 50) VDDf where: IT is in mA (per package),
CL in pF, VDD in V, and f in kHz is input frequency.
4. The formulas given are for the typical characteristics only at 25_C.
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