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 and R . Output Pulse Width T = R @ C (secs)
http://onsemi.com
MARKING
DIAGRAMS
X
X
X
X
R = W
X
16
1
PDIP−16
P SUFFIX
CASE 648
C = Farads
X
MC14538BCP
AWLYYWWG
Features
• 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
16
SOIC−16
D SUFFIX
CASE 751B
14538BG
AWLYWW
1
16
SOIC−16
DW SUFFIX
CASE 751G
• Pin−for−pin Compatible with MC14528B and CD4528B (CD4098)
14538BG
AWLYYWW
• Use the MC54/74HC4538A for Pulse Widths Less Than 10 ms with
Supplies Up to 6 V
1
• Pb−Free Packages are Available*
MAXIMUM RATINGS (Voltages Referenced to V
)
SS
16
1
Symbol
Parameter
Value
−0.5 to +18.0
Unit
V
14
538B
ALYW
TSSOP−16
DT SUFFIX
CASE 948F
V
DC Supply Voltage Range
DD
V , V
in out
Input or Output Voltage Range
(DC or Transient)
−0.5 to V + 0.5
V
DD
I , I
in out
Input or Output Current
(DC or Transient) per Pin
10
mA
16
P
T
Power Dissipation, per Package
(Note 1)
500
mW
D
SOEIAJ−16
F SUFFIX
CASE 966
MC14538B
ALYWG
Operating Temperature Range
Storage Temperature Range
−55 to +125
−65 to +150
260
°C
°C
°C
A
1
T
stg
A
WL, L
YY, Y
= Assembly Location
= Wafer Lot
= Year
T
Lead Temperature
(8−Second Soldering)
L
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.
WW, W = Work Week
G
= Pb−Free Indicator
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
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 and V should be constrained
in
out
*For additional information on our Pb−Free strategy
and soldering details, please download the
ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.
to the range V v (V or V ) v V
.
DD
SS
in
out
Unused inputs must always be tied to an appropriate logic voltage level
(e.g., either V or V ). Unused outputs must be left open.
SS
DD
©
Semiconductor Components Industries, LLC, 2005
1
Publication Order Number:
August, 2005 − Rev. 7
MC14538B/D