MM74C221N

MM74C221N Datasheet

MM74C221 Dual Monostable Multivibrator

Part	Datasheet
MM74C221N	MM74C221N (pdf)

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MM74C221 Dual Monostable Multivibrator MM74C221 Dual Monostable Multivibrator The MM74C221 dual monostable multivibrator is a monolithic complementary MOS integrated circuit. Each multivibrator features a negative-transition-triggered input and a positive-transition-triggered input, either of which can be used as an inhibit input, and a clear input. Once fired, the output pulses are independent of further transitions of the A and B inputs and are a function of the external timing components CEXT and REXT. The pulse width is stable over a wide range of temperature and VCC. Pulse stability will be limited by the accuracy of external timing components. The pulse width is approximately defined by the relationship tW OUT CEXT REXT. For further information and applications, see AN-138. s Wide supply voltage range 4.5V to 15V s Guaranteed noise margin 1.0V s High noise immunity VCC typ. s Low power TTL compatibility fan out of 2 driving 74L Ordering Code: Order Number Package Number Package Description 74MMC221N N16E 16-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide Connection Diagrams Timing Component Truth Table Inputs Clear H = HIGH Level L = LOW Level X= Irrelevant = Transition from LOW-to-HIGH = Transition from HIGH-to-LOW = One HIGH Level Pulse = One LOW Level Pulse Outputs L H Top View 2002 Fairchild Semiconductor Corporation DS005904 MM74C221 Absolute Maximum Ratings Note 1 Voltage at Any Pin Operating Temperature Range Storage Temperature Range Power Dissipation Dual-In-Line Small Outline Operating VCC Range Absolute Maximum VCC REXT 80 VCC Lead Temperature Soldering, 10 seconds −0.3V to VCC + 0.3V −55°C to +125°C −65°C to +150°C 700 mW 500 mW 4.5V to 15V 260°C Note 1 “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. Except for “Operating Temperature Range” they are not meant to imply that the devices should be operated at these limits. The Electrical Characteristics table provides conditions for actual device operation. DC Electrical Characteristics Max/min limits apply across temperature range, unless otherwise noted Parameter Conditions CMOS to CMOS VIN 1 Logical “1” Input Voltage VIN 0 Logical “0” Input Voltage VOUT 1 Logical “1” Output Voltage VOUT 0 Logical “0” Output Voltage IIN 1 IIN 0 ICC Logical “1” Input Current Logical “0” Input Current Supply Current Standby VCC = 5V VCC = 10V VCC = 5V VCC = 10V VCC = 5V, IO = −10 µA VCC = 10V, IO = −10 µA VCC = 5V, IO = +10 µA VCC = 10V, IO = +10 µA VCC = 15V, VIN = 15V VCC = 15V, VIN = 0V VCC = 15V, REXT = ∞, Q1, Q2 = Logic “0” Note 2 Supply Current During Output Pulse

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MM74C221 Dual Monostable Multivibrator

MM74C221 Dual Monostable Multivibrator

The MM74C221 dual monostable multivibrator is a monolithic complementary MOS integrated circuit. Each multivibrator features a negative-transition-triggered input and a positive-transition-triggered input, either of which can be used as an inhibit input, and a clear input.

Once fired, the output pulses are independent of further transitions of the A and B inputs and are a function of the external timing components CEXT and REXT. The pulse width is stable over a wide range of temperature and VCC.

Pulse stability will be limited by the accuracy of external timing components. The pulse width is approximately defined by the relationship tW OUT CEXT REXT. For further information and applications, see AN-138.
s Wide supply voltage range 4.5V to 15V s Guaranteed noise margin 1.0V s High noise immunity VCC typ. s Low power TTL compatibility fan out of 2 driving 74L
Ordering Code:

Order Number Package Number

Package Description
74MMC221N

N16E
16-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide

Connection Diagrams

Timing Component

Truth Table

Inputs

Clear

H = HIGH Level L = LOW Level X= Irrelevant = Transition from LOW-to-HIGH
= Transition from HIGH-to-LOW = One HIGH Level Pulse = One LOW Level Pulse

Outputs
L H

Top View 2002 Fairchild Semiconductor Corporation DS005904

MM74C221

Absolute Maximum Ratings Note 1

Voltage at Any Pin Operating Temperature Range Storage Temperature Range Power Dissipation

Dual-In-Line Small Outline Operating VCC Range Absolute Maximum VCC REXT 80 VCC Lead Temperature Soldering, 10 seconds
−0.3V to VCC + 0.3V −55°C to +125°C −65°C to +150°C
700 mW 500 mW 4.5V to 15V
260°C

Note 1 “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. Except for “Operating Temperature Range” they are not meant to imply that the devices should be operated at these limits. The Electrical Characteristics table provides conditions for actual device operation.

DC Electrical Characteristics

Max/min limits apply across temperature range, unless otherwise noted

Parameter

Conditions

CMOS to CMOS

VIN 1

Logical “1” Input Voltage

VIN 0

Logical “0” Input Voltage

VOUT 1

Logical “1” Output Voltage

VOUT 0 Logical “0” Output Voltage

IIN 1 IIN 0 ICC

Logical “1” Input Current Logical “0” Input Current Supply Current Standby

VCC = 5V VCC = 10V VCC = 5V VCC = 10V VCC = 5V, IO = −10 µA VCC = 10V, IO = −10 µA VCC = 5V, IO = +10 µA VCC = 10V, IO = +10 µA VCC = 15V, VIN = 15V VCC = 15V, VIN = 0V VCC = 15V, REXT = ∞, Q1, Q2 = Logic “0” Note 2

Supply Current

During Output Pulse

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Datasheet ID: MM74C221N 634348