Specification	CD54HC221F3A

Current - Output High, Low [custom]	5.2 mA
Current - Output High, Low [custom]	5.2 mA
Independent Circuits	2
Logic Type	Monostable
Mounting Type	Through Hole
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-55 °C
Package / Case	7.62 mm, 0.3 in
Package / Case	16-CDIP
Propagation Delay	18 ns
Schmitt Trigger Input	True
Supplier Device Package	16-CDIP
Voltage - Supply [Max]	6 V
Voltage - Supply [Min]	2 V

CD54HC221 Series

High Speec CMOS Logic Dual Monostable Multivibrator with Reset

Part	Package / Case	Package / Case	Operating Temperature [Min]	Operating Temperature [Max]	Independent Circuits	Voltage - Supply [Min]	Voltage - Supply [Max]	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Logic Type	Mounting Type	Propagation Delay	Schmitt Trigger Input	Supplier Device Package
Texas Instruments CD54HC221F3A	0.3 in 7.62 mm	16-CDIP	-55 °C	125 °C	2	2 V	6 V	5.2 mA	5.2 mA	Monostable	Through Hole	18 ns		16-CDIP

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Arrow	N/A	25	$ 36.69
Digikey	Tube	1	$ 34.34
Texas Instruments	TUBE	1	$ 52.98
		100	$ 46.28
		250	$ 35.68
		1000	$ 31.92

Description

General part information

CD54HC221 Series

The ’HC221 and CD74HCT221 are dual monostable multivibrators with reset. An external resistor (RX) and an external capacitor (CX) control the timing and the accuracy for the circuit. Adjustment of RXand CXprovides a wide range of output pulse widths from the Q and Q\ terminals. Pulse triggering on the B input occurs at a particular voltage level and is not related to the rise and fall time of the trigger pulse.

Once triggered, the outputs are independent of further trigger inputs on A\ and B. The output pulse can be terminated by a LOW level on the Reset (R)\ pin. Trailing Edge triggering (A)\ and leading-edge-triggering (B) inputs are provided for triggering from either edge of the input pulse. On power up, the IC is reset. If either Mono is not used each input (on the unused device) must be terminated either high or low.

The minimum value of external resistance, RX, is typically 500. The minimum value of external capacitance, CX, is 0pF. The calculation for the pulse width is tW= 0.7 RXCXat VCC= 4.5V.

Documents

Technical documentation and resources

Datasheet

CD54HC221F3A

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CD54HC221F3A

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Technical Specifications

CD54HC221 Series

Pricing

Description

CD54HC221 Series

Documents

Datasheet

TI IBIS File Creation, Validation, and Distribution Processes

Semiconductor Packing Material Electrostatic Discharge (ESD) Protection

SN54/74HCT CMOS Logic Family Applications and Restrictions

Designing With Logic (Rev. C)

Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc

Input and Output Characteristics of Digital Integrated Circuits

Implications of Slow or Floating CMOS Inputs (Rev. E)

CMOS Power Consumption and CPD Calculation (Rev. B)

Live Insertion

Understanding and Interpreting Standard-Logic Data Sheets (Rev. C)

Signal Switch Data Book (Rev. A)

Logic Guide (Rev. AB)

LOGIC Pocket Data Book (Rev. B)

Designing With the SN74LVC1G123 Monostable Multivibrator (Rev. A)

CD54HC221 Series