HEF4938BT Datasheet, PDF (5/17 Pages) NXP Semiconductors – Dual precision monostable multivibrator

NXP Semiconductors
HEF4938B
Dual precision monostable multivibrator
(1)
nB input
(3)
nA input
nCD input
(1)
(2)
(1)
(4)
nREXT/CEXT input
V_ref1
V_ref2
nQ output
T
T
(5)
(1) Positive edge triggering.
(2) Positive edge retriggering (pulse lengthening).
(3) Negative edge triggering.
(4) Reset (pulse shortening).
(5) T = R_EXT  C_EXT.
Fig 5. Timing diagram
V_ref1
V_ref2
T
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7. Limiting values
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to V_SS = 0 V (ground)
Symbol
Parameter
Conditions
Min
Max
Unit
V_DD
I_IK
V_I
I_OK
I_I/O
I_DD
T_stg
T_amb
P_tot
supply voltage
input clamping current
input voltage
output clamping current
input/output current
supply current
storage temperature
ambient temperature
total power dissipation
V_I < 0.5 V or V_I > V_DD + 0.5 V
V_I < 0.5 V or V_I > V_DD + 0.5 V
T_amb = 40 C to +85 C
DIP16 package
0.5
-
0.5
-
65
40
[1] _-
+18
V
10
mA
V_DD + 0.5 V
10
mA
10
mA
50
mA
+150
C
+125
C
750
mW
SO16 package
[2] _-
500
mW
P
power dissipation
per output
-
100
mW
[1] For DIP16 package: P_tot derates linearly with 12 mW/K above 70 C.
[2] For SO16 package: P_tot derates linearly with 8 mW/K above 70 C.
HEF4938B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 6 — 15 November 2011
© NXP B.V. 2011. All rights reserved.
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