
MC14528B
http://onsemi.com
4
SWITCHING CHARACTERISTICS (CL = 50 pF, TA = 25_C) (Note 4) Characteristic
Symbol
CX
pF
RX
kW
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
TurnOff, TurnOn Delay Time — A or B to Q or Q
tPLH, tPHL = (1.7 ns/pF) CL + 240 ns
tPLH, tPHL = (0.66 ns/pF) CL + 87 ns
tPLH, tPHL = (0.5 ns/pF) CL + 65 ns
tPLH,
tPHL
15
5.0
10
15
325
120
90
650
240
180
ns
TurnOff, TurnOn Delay Time — A or B to Q or Q
tPLH, tPHL = (1.7 ns/pF) CL + 620 ns
tPLH, tPHL = (0.66 ns/pF) CL + 257 ns
tPLH, tPHL = (0.5 ns/pF) CL + 185 ns
tPLH,
tPHL
1000
10
5.0
10
15
705
290
210
ns
Input Pulse Width — A or B
tWH
15
5.0
10
15
150
75
55
70
30
ns
tWL
1000
10
5.0
10
15
70
30
ns
Output Pulse Width — Q or Q
(For CX < 0.01 mF use graph for
appropriate VDD level.)
tW
15
5.0
10
15
550
350
300
ns
Output Pulse Width — Q or Q
(For CX > 0.01 mF use formula:
tW = 0.2 RX CX Ln [VDD – VSS]) (Note 6) tW
10,000
10
5.0
10
15
10
15
30
50
55
45
90
95
ms
Pulse Width Match between Circuits in the same
package
t1 – t2
10,000
10
5.0
10
15
6.0
8.0
25
35
%
Reset Propagation Delay — Reset to Q or Q
tPLH,
tPHL
15
5.0
10
15
325
90
60
600
225
170
ns
1000
10
5.0
10
15
1000
300
250
ns
Retrigger Time
trr
15
5.0
10
15
0
ns
1000
10
5.0
10
15
0
ns
External Timing Resistance
RX
5.0
1000
kW
External Timing Capacitance
CX
mF
4. The formulas given are for the typical characteristics only at 25_C.
5. Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance.
6. If CX > 15 mF, Use Discharge Protection Diode DX, per Figure 9. 7. RXis in W, CX is in farads, VDD and VSS in volts, PWout in seconds.