MM74HC221AN Fairchild Semiconductor, MM74HC221AN Datasheet

IC MULTIVIBRATOR MONO DL 16-DIP

MM74HC221AN

Manufacturer Part Number
MM74HC221AN
Description
IC MULTIVIBRATOR MONO DL 16-DIP
Manufacturer
Fairchild Semiconductor
Series
74HCr
Datasheet

Specifications of MM74HC221AN

Logic Type
Monostable
Independent Circuits
2
Schmitt Trigger Input
Yes
Propagation Delay
22ns
Current - Output High, Low
5.2mA, 5.2mA
Voltage - Supply
2 V ~ 6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
16-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
74HC221
MM74HC221N
MM74HC221N
© 2004 Fairchild Semiconductor Corporation
MM74HC221AM
(Note 1)
MM74HC221ASJ
MM74HC221AN
MM74HC221A
Dual Non-Retriggerable Monostable Multivibrator
General Description
The MM74HC221A high speed monostable multivibrators
(one shots) utilize advanced silicon-gate CMOS technol-
ogy. They feature speeds comparable to low power Schot-
tky TTL circuitry while retaining the low power and high
noise immunity characteristic of CMOS circuits.
Each multivibrator features both a negative, A, and a posi-
tive, B, transition triggered input, either of which can be
used as an inhibit input. Also included is a clear input that
when taken low resets the one shot. The MM74HC221A
can be triggered on the positive transition of the clear while
A is held LOW and B is held HIGH.
The MM74HC221A is a non-retriggerable, and therefore
cannot be retriggered until the output pulse times out.
Pulse width stability over a wide range of temperature and
supply is achieved using linear CMOS techniques. The out-
put pulse equation is simply: PW
PW is in seconds, R is in ohms, and C is in farads. All
inputs are protected from damage due to static discharge
by diodes to V
Ordering Code:
Note 1: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagrams
Note: Pin 6 and Pin 14 must be hard-wired to GND.
Order Number
CC
and ground.
Package Number
Top View
M16A
M16D
N16E
(R
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
EXT
) (C
EXT
DS005325
); where
Features
Typical propagation delay: 40 ns
Wide power supply range: 2V–6V
Low quiescent current: 80 A maximum (74HC Series)
Low input current: 1 A maximum
Fanout of 10 LS-TTL loads
Simple pulse width formula T
Wide pulse range: 400 ns to
Part to part variation: 5% (typ)
Schmitt Trigger A & B inputs enable infinite signal input
rise or fall times
Package Description
Timing Component
September 1983
Revised January 2004
(typ)
RC
www.fairchildsemi.com

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MM74HC221AN Summary of contents

Page 1

... MM74HC221ASJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide MM74HC221AN N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide Note 1: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagrams Top View Note: Pin 6 and Pin 14 must be hard-wired to GND ...

Page 2

Truth Table Clear HIGH Level L LOW Level Transition from LOW-to-HIGH Transition from HIGH-to-LOW One HIGH Level Pulse One LOW Level Pulse X Irrelevant Logic Diagram www.fairchildsemi.com Inputs Outputs ...

Page 3

Absolute Maximum Ratings (Note 3) Supply Voltage ( Input Voltage ( Output Voltage ( OUT Clamp Diode Current ( Output Current, ...

Page 4

AC Electrical Characteristics 5V pF Symbol Parameter t Maximum Trigger Propagation PLH Delay Clear Maximum Trigger Propagation PHL Delay ...

Page 5

Theory of Operation TRIGGER OPERATION As shown in Figure 1 and the logic diagram before an input trigger occurs, the monostable is in the quiescent state with the Q output LOW, and the timing capacitor C pletely charged to V ...

Page 6

Typical Output Pulse Width vs. Timing Components Typical Distribution of Output Pulse Width, Part to Part Note: R and C are not subjected to temperature. The C is polypropylene. www.fairchildsemi.com Typical 1ms Pulse Width Variation Minimum R vs. Supply Voltage ...

Page 7

Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow Package Number M16A 7 www.fairchildsemi.com ...

Page 8

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide www.fairchildsemi.com Package Number M16D 8 ...

Page 9

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right ...

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