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MC14538B Datasheet(PDF) 1 Page - Motorola, Inc

Part No. MC14538B
Description  DUAL PRECISION RETRIGGERABLE / RESETTABLE MONOSTABLE MULTIVIBRATOR
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Maker  MOTOROLA [Motorola, Inc]
Homepage  http://www.freescale.com
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MC14538B Datasheet(HTML) 1 Page - Motorola, Inc

 
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MOTOROLA CMOS LOGIC DATA
1
MC14538B
Dual Precision
Retriggerable/Resettable
Monostable Multivibrator
The MC14538B is a dual, retriggerable, resettable monostable multivibra-
tor. 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, CX and RX.
• Unlimited Rise and Fall Time Allowed on the A Trigger Input
• Pulse Width Range = 10 µs 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 µs with
Supplies Up to 6 V.
MAXIMUM RATINGS* (Voltages Referenced to VSS)
Symbol
Parameter
Value
Unit
VDD
DC Supply Voltage
– 0.5 to + 18.0
V
Vin, Vout Input or Output Voltage (DC or Transient)
– 0.5 to VDD + 0.5
V
Iin, Iout
Input or Output Current (DC or Transient),
per Pin
± 10
mA
PD
Power Dissipation, per Package†
500
mW
Tstg
Storage Temperature
– 65 to + 150
_C
TL
Lead Temperature (8–Second Soldering)
260
_C
* Maximum Ratings are those values beyond which damage to the device may occur.
†Temperature Derating:
Plastic “P and D/DW” Packages: – 7.0 mW/
_C From 65_C To 125_C
Ceramic “L” Packages: – 12 mW/
_C From 100_C To 125_C
ONE–SHOT SELECTION GUIDE
100 ns
MC14528B
MC14536B
MC14538B
MC14541B
MC4538A*
1
µs
10
µs 100 µs
1 ms
10 ms
100 ms
1 s
10 s
*LIMITED OPERATING VOLTAGE (2 – 6 V)
TOTAL OUTPUT PULSE WIDTH RANGE
RECOMMENDED PULSE WIDTH RANGE
23 HR
5 MIN.
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
© Motorola, Inc. 1995
REV 3
1/94
MC14538B
L SUFFIX
CERAMIC
CASE 620
ORDERING INFORMATION
MC14XXXBCP
Plastic
MC14XXXBCL
Ceramic
*MC14XXXBDW
SOIC
TA = – 55° to 125°C for all packages.
P SUFFIX
PLASTIC
CASE 648
DW SUFFIX
SOIC
CASE 751G
BLOCK DIAGRAM
* Consult factory for possible “D” suffix SOIC
Case 751B.
VDD
VDD
6
7
10
9
12
11
5
4
A
B
CX
RX
1
2
Q1
Q1
RESET
3
CX
RX
15
14
Q2
Q2
RESET
13
A
B
RX AND CX ARE EXTERNAL COMPONENTS.
VDD = PIN 16
VSS = PIN 8, PIN 1, PIN 15


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