MC14538B
Dual Precision
Retriggerable/Resettable
Monostable Multivibrator
The MC14538B is a dual, retriggerable, resettable monostable
multivibrator. It may be triggered from either edge of an input pulse,
and produces an accurate output pulse over a wide range of widths, the
duration and accuracy of which are determined by the external timing
components, C
X
and R
X
. Output Pulse Width T = R
X
@
C
X
(secs)
R
X
=
W
C
X
= Farads
Features
http://onsemi.com
MARKING
DIAGRAMS
PDIP−16
P SUFFIX
CASE 648
16
MC14538BCP
AWLYYWWG
1
•
•
•
•
•
•
•
Unlimited Rise and Fall Time Allowed on the A Trigger Input
Pulse Width Range = 10
ms
to 10 s
Latched Trigger Inputs
Separate Latched Reset Inputs
3.0 Vdc to 18 Vdc Operational Limits
Triggerable from Positive (A Input) or Negative−Going Edge (B−Input)
Capable of Driving Two Low−Power TTL Loads or One Low−Power
Schottky TTL Load Over the Rated Temperature Range
•
Pin−for−pin Compatible with MC14528B and CD4528B (CD4098)
•
Use the MC54/74HC4538A for Pulse Widths Less Than 10
ms
with
Supplies Up to 6 V
•
Pb−Free Packages are Available*
MAXIMUM RATINGS
(Voltages Referenced to V
SS
)
Symbol
V
DD
V
in
, V
out
I
in
, I
out
P
D
T
A
T
stg
T
L
Parameter
DC Supply Voltage Range
Input or Output Voltage Range
(DC or Transient)
Input or Output Current
(DC or Transient) per Pin
Power Dissipation, per Package
(Note 1)
Operating Temperature Range
Storage Temperature Range
Lead Temperature
(8−Second Soldering)
Value
−0.5 to +18.0
−0.5 to V
DD
+ 0.5
±10
500
−55 to +125
−65 to +150
260
Unit
V
V
mA
16
SOIC−16
D SUFFIX
CASE 751B
1
16
SOIC−16
DW SUFFIX
CASE 751G
1
14538BG
AWLYYWW
14538BG
AWLYWW
16
TSSOP−16
DT SUFFIX
CASE 948F
1
16
14
538B
ALYW
mW
°C
°C
°C
SOEIAJ−16
F SUFFIX
CASE 966
1
A
WL, L
YY, Y
WW, W
G
MC14538B
ALYWG
Maximum ratings are those values beyond which device damage can occur.
Maximum ratings applied to the device are individual stress limit values (not
normal operating conditions) and are not valid simultaneously. If these limits are
exceeded, device functional operation is not implied, damage may occur and
reliability may be affected.
1. Temperature Derating:
Plastic “P and D/DW” Packages: – 7.0 mW/_C From 65_C To 125_C
This device contains protection circuitry to guard against damage due to high
static voltages or electric fields. However, precautions must be taken to avoid
applications of any voltage higher than maximum rated voltages to this
high−impedance circuit. For proper operation, V
in
and V
out
should be constrained
to the range V
SS
v
(V
in
or V
out
)
v
V
DD
.
Unused inputs must always be tied to an appropriate logic voltage level
(e.g., either V
SS
or V
DD
). Unused outputs must be left open.
©
Semiconductor Components Industries, LLC, 2005
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Indicator
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
*For additional information on our Pb−Free strategy
and soldering details, please download the
ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.
Publication Order Number:
MC14538B/D
1
August, 2005 − Rev. 7
ONSEMI [ ON SEMICONDUCTOR ]
