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HEF4938B Datasheet(PDF) 5 Page - NXP Semiconductors

Part No. HEF4938B
Description  Dual precision monostable multivibrator
Download  8 Pages
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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HEF4938B Datasheet(HTML) 5 Page - NXP Semiconductors

   
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January 1995
5
Philips Semiconductors
Preliminary specification
Dual precision monostable multivibrator
HEF4938B
AC CHARACTERISTICS
VSS = 0 V; Tamb =25 °C; CL = 50 pF; input transition times ≤ 20 ns.
PARAMETER
VDD
(V)
SYMBOL
MIN.
TYP.
MAX.
UNIT
TYPICAL
EXTRAPOLATION
FORMULA
Propagation delay
5
200
460
173 ns
+ (0.55 ns/pF) CL
I0, I1 to O
10
tPHL
90
180
ns
79 ns
+ (0.23 ns/pF) CL
HIGH to LOW
15
60
120
52 ns
+ (0.16 ns/pF) CL
Propagation delay
5
220
440
193 ns
+ (0.55 ns/pF) CL
I0,I1 to O10
tPLH
85
190
ns
74 ns
+ (0.23 ns/pF) CL
LOW to HIGH
15
60
120
52 ns
+ (0.16 ns/pF) CL
Propagation delay
5
125
250
98 ns
+ (0.55 ns/pF) CL
CD to O
10
tPHL
55
110
ns
44 ns
+ (0.23 ns/pF) CL
HIGH to LOW
15
40
80
32 ns
+ (0.16 ns/pF) CL
Propagation delay
5
125
250
98 ns
+ (0.55 ns/pF) CL
CD to O
10
tPLH
55
110
ns
44 ns
+ (0.23 ns/pF) CL
LOW to HIGH
15
40
80
32 ns
+ (0.16 ns/pF) CL
Recovery times
CD to I0, I1
5
20
40
10
tRCD
10
20
ns
15
510
Retrigger times
5
0
−−
O, Oto I0,I1
10
tRO
0
−−
ns
LOW to OFF
15
0
−−
Minimum output
5
90
45
pulse width LOW
10
tWIOL
30
15
ns
I0
15
24
12
Minimum output
5
50
25
pulse width LOW
10
tWI1H
24
12
ns
I1
15
20
10
Output pulse width
O, O
5
9.3
10.0
10.6
10
tWO
9.2
9.9
10.5
ms
Rt = 100 kΩ;Ct = 100 nF
15
9.1
9.8
10.4


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