MC14538BCP View Datasheet(PDF) - Motorola => Freescale
Part Name
Description
MFG CO.
MC14538BCP Datasheet PDF : 10 Pages
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ÎÎÎÎSÎÎÎÎWIÎÎÎÎTCHÎÎÎÎINGÎÎÎÎCHÎÎÎÎARÎÎÎÎACÎÎÎÎTERÎÎÎÎISTÎÎÎÎICSÎÎÎÎ* (CÎÎÎÎL=5ÎÎÎÎ0pFÎÎÎÎ,TAÎÎÎÎ=2ÎÎÎÎ5_CÎÎÎÎ) ÎÎÎÎÎÎÎÎÎÎÎÎVÎÎÎÎDDÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎAlÎÎÎÎlTypÎÎÎÎes ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
Characteristic
Symbol
Vdc
Min
Typ #
Max
Unit
Output Rise Time
tTLH = (1.35 ns/pF) CL + 33 ns
tTLH = (0.60 ns/pF) CL + 20 ns
tTLH = (0.40 ns/pF) CL + 20 ns
Output Fall Time
tTHL = (1.35 ns/pF) CL + 33 ns
tTHL = (0.60 ns/pF) CL + 20 ns
tTHL = (0.40 ns/pF) CL + 20 ns
Propagation Delay Time
A or B to Q or Q
tPLH, tPHL = (0.90 ns/pF) CL + 255 ns
tPLH, tPHL = (0.36 ns/pF) CL + 132 ns
tPLH, tPHL = (0.26 ns/pF) CL + 87 ns
tTLH
ns
5.0
—
100
200
10
—
50
100
15
—
40
80
tTHL
ns
5.0
—
100
200
10
—
50
100
15
—
40
80
tPLH,
ns
tPHL
5.0
—
300
600
10
—
150
300
15
—
100
220
Reset to Q or Q
tPLH, tPHL = (0.90 ns/pF) CL + 205 ns
tPLH, tPHL = (0.36 ns/pF) CL + 107 ns
tPLH, tPHL = (0.26 ns/pF) CL + 82 ns
Input Rise and Fall Times
Reset
ns
5.0
—
250
500
10
—
125
250
15
—
95
190
tr, tf
5
—
—
15
µs
10
—
—
5
15
—
—
4
B Input
5
—
300
1.0
ms
10
—
1.2
0.1
15
—
0.4
0.05
A Input
5
—
10
No Limit
15
Input Pulse Width
A, B, or Reset
tWH,
tWL
5.0
170
85
10
90
45
15
80
40
—
ns
—
—
Retrigger Time
trr
5.0
0
—
—
ns
10
0
—
—
15
0
—
—
Output Pulse Width — Q or Q
Refer to Figures 8 and 9
CX = 0.002 µF, RX = 100 kΩ
T
µs
5.0
198
210
230
10
200
212
232
15
202
214
234
CX = 0.1 µF, RX = 100 kΩ
5.0
9.3
9.86
10.5
ms
10
9.4
10
10.6
15
9.5
10.14
10.7
CX = 10 µF, RX = 100 kΩ
5.0
0.91
0.965
1.03
s
10
0.92
0.98
1.04
15
0.93
0.99
1.06
Pulse Width Match between circuits in
100
5.0
—
± 1.0
± 5.0
%
the same package.
CX = 0.1 µF, RX = 100 kΩ
[(T1 – T2)/T1]
10
15
—
± 1.0
± 5.0
—
± 1.0
± 5.0
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ * The formulas given are for the typical characteristics only at 25_C.
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ #Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance.
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ OPERATING CONDITIONS
External Timing Resistance
RX
—
5.0
—
kΩ
External Timing Capacitance
CX
—
0
—
No
µF
Limit†
* The maximum usable resistance RX is a function of the leakage of the capacitor CX, leakage of the MC14538B, and leakage due to board layout
and surface resistance. Susceptibility to externally induced noise signals may occur for RX > 1 MΩ..
†If CX > 15 µF, use discharge protection diode per Fig. 11.
MOTOROLA CMOS LOGIC DATA
MC14538B
3
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