The ’HC221 and CD74HCT221 are dual monostable
multivibrators with reset. An external resistor (R
external capacitor (C
for the circuit. Adjustment of R
range of output pulse widths from the Q and
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
LOW level on the Reset (
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, R
The minimum value of external capacitance, C
calculation for the pulse width is t
CC
Ordering Information
CD54HC221F3A-55 to 12516 Ld CERDIP
CD74HC221E-55 to 12516 Ld PDIP
CD74HC221M-55 to 12516 Ld SOIC
CD74HC221MT-55 to 12516 Ld SOIC
CD74HC221M96-55 to 12516 Ld SOIC
CD74HC221NSR-55 to 12516 Ld SOP
CD74HC221PW-55 to 12516 Ld TSSOP
CD74HC221PWR-55 to 12516 Ld TSSOP
CD74HC221PWT-55 to 12516 Ld TSSOP
CD74HCT221E-55 to 12516 Ld PDIP
CD74HCT221M-55 to 12516 Ld SOIC
CD74HCT221MT-55 to 12516 Ld SOIC
CD74HCT221M96-55 to 12516 Ld SOIC
NOTE: When ordering, use the entire part number. The suffixes 96
and R denote tape and reel. The suffix T denotes a small-quantity
reel of 250.
A and B. The output pulse can be terminated by a
PART NUMBERTEMP. RANGE (oC)PACKAGE
) control the timing and the accuracy
X
R) pin. Trailing Edge triggering (A)
and CXprovides a wide
X
X
= 0.7 RXCX at VCC = 4.5V.
W
) and an
X
Q terminals.
, is typically 500Ω.
, is 0pF. The
X
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
H = High Voltage Level, L = Low Voltage Level, X = Irrelevant, ↑ = Transition from
Low to High Level,↓ = Transition from High to Low Level, = One High Level
Pulse, = One Low Level Pulse
NOTE:
1. For this combination the reset input must be low and the following sequence
must be used: pin 1 (or 9) must be set high or pin 2 (or 10) set low; then pin 1
(or 9) must be low and pin 2 (or 10) set high. Now the reset input goes from lowto-high and the device will be triggered.
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
2. The package thermal impedance is calculated in accordance with JESD 51-7.
CD74HC221EACTIVEPDIPN1625RoHS & GreenNIPDAUN / A for Pkg Type-55 to 125CD74HC221E
CD74HC221MACTIVESOICD1640RoHS & GreenNIPDAULevel-1-260C-UNLIM-55 to 125HC221M
CD74HC221M96ACTIVESOICD162500RoHS & GreenNIPDAULevel-1-260C-UNLIM-55 to 125HC221M
CD74HC221M96E4ACTIVESOICD162500RoHS & GreenNIPDAULevel-1-260C-UNLIM-55 to 125HC221M
CD74HC221MG4ACTIVESOICD1640RoHS & GreenNIPDAULevel-1-260C-UNLIM-55 to 125HC221M
CD74HC221MTACTIVESOICD16250RoHS & GreenNIPDAULevel-1-260C-UNLIM-55 to 125HC221M
CD74HC221NSRACTIVESONS162000RoHS & GreenNIPDAULevel-1-260C-UNLIM-55 to 125HC221M
Package Type Package
(1)
Drawing
Pins Package
Qty
Eco Plan
(2)
& Green
& Green
& Green
Lead finish/
Ball material
(6)
MSL Peak Temp
(3)
Op Temp (°C)Device Marking
SNPBN / A for Pkg Type-55 to 1255962-8780501EA
SNPBN / A for Pkg Type-55 to 125CD54HC221F
SNPBN / A for Pkg Type-55 to 1255962-8780501EA
21-Jan-2021
Samples
(4/5)
CD54HC221F3A
CD54HC221F3A
CD74HC221PWACTIVETSSOPPW1690RoHS & GreenNIPDAULevel-1-260C-UNLIM-55 to 125HJ221
CD74HC221PWRACTIVETSSOPPW162000RoHS & GreenNIPDAULevel-1-260C-UNLIM-55 to 125HJ221
CD74HC221PWRE4ACTIVETSSOPPW162000RoHS & GreenNIPDAULevel-1-260C-UNLIM-55 to 125HJ221
CD74HC221PWTACTIVETSSOPPW16250RoHS & GreenNIPDAULevel-1-260C-UNLIM-55 to 125HJ221
CD74HCT221EACTIVEPDIPN1625RoHS & GreenNIPDAUN / A for Pkg Type-55 to 125CD74HCT221E
CD74HCT221EE4ACTIVEPDIPN1625RoHS & GreenNIPDAUN / A for Pkg Type-55 to 125CD74HCT221E
CD74HCT221MACTIVESOICD1640RoHS & GreenNIPDAULevel-1-260C-UNLIM-55 to 125HCT221M
CD74HCT221M96ACTIVESOICD162500RoHS & GreenNIPDAULevel-1-260C-UNLIM-55 to 125HCT221M
CD74HCT221M96G4ACTIVESOICD162500RoHS & GreenNIPDAULevel-1-260C-UNLIM-55 to 125HCT221M
Addendum-Page 1
Page 12
PACKAGE OPTION ADDENDUM
www.ti.com
Orderable DeviceStatus
CD74HCT221MG4ACTIVESOICD1640RoHS & GreenNIPDAULevel-1-260C-UNLIM-55 to 125HCT221M
CD74HCT221MTACTIVESOICD16250RoHS & GreenNIPDAULevel-1-260C-UNLIM-55 to 125HCT221M
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
Package Type Package
(1)
Drawing
Pins Package
Qty
Eco Plan
(2)
Lead finish/
Ball material
(6)
MSL Peak Temp
(3)
Op Temp (°C)Device Marking
21-Jan-2021
(4/5)
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based
flame retardants must also meet the <=1000ppm threshold requirement.
(3)
MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4)
There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5)
Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6)
Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two
lines if the finish value exceeds the maximum column width.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
OTHER QUALIFIED VERSIONS OF CD54HC221, CD74HC221 :
Samples
Addendum-Page 2
Page 13
PACKAGE OPTION ADDENDUM
www.ti.com
Catalog: CD74HC221
•
Military: CD54HC221
•
NOTE: Qualified Version Definitions:
Catalog - TI's standard catalog product
•
Military - QML certified for Military and Defense Applications
1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing
per ASME Y14.5M.
2. This drawing is subject to change without notice.
3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not
exceed 0.15 mm per side.
4. This dimension does not include interlead flash. Interlead flash shall not exceed 0.25 mm per side.
5. Reference JEDEC registration MO-153.
0.15
0.05
www.ti.com
Page 19
EXAMPLE BOARD LAYOUT
TSSOP - 1.2 mm max heightPW0016A
SMALL OUTLINE PACKAGE
16X (0.45)
14X (0.65)
1
8
16X (1.5)
SYMM
(R0.05) TYP
16
SYMM
9
(5.8)
LAND PATTERN EXAMPLE
EXPOSED METAL SHOWN
SCALE: 10X
SOLDER MASK
OPENING
EXPOSED METAL
0.05 MAX
ALL AROUND
NON-SOLDER MASK
DEFINED
(PREFERRED)
METAL
SOLDER MASK DETAILS
15.000
METAL UNDER
SOLDER MASK
0.05 MIN
ALL AROUND
SOLDER MASK
DEFINED
NOTES: (continued)
6. Publication IPC-7351 may have alternate designs.
7. Solder mask tolerances between and around signal pads can vary based on board fabrication site.
SOLDER MASK
OPENING
EXPOSED METAL
4220204/A 02/2017
www.ti.com
Page 20
EXAMPLE STENCIL DESIGN
TSSOP - 1.2 mm max heightPW0016A
SMALL OUTLINE PACKAGE
16X (0.45)
14X (0.65)
1
8
16X (1.5)
SYMM
(5.8)
SOLDER PASTE EXAMPLE
BASED ON 0.125 mm THICK STENCIL
SCALE: 10X
(R0.05) TYP
16
SYMM
9
4220204/A 02/2017
NOTES: (continued)
8. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate
design recommendations.
9. Board assembly site may have different recommendations for stencil design.
www.ti.com
Page 21
Page 22
Page 23
Page 24
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