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74VHC221AN 데이터시트 PDF




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부품번호 74VHC221AN 기능
기능 Dual Non-Retriggerable Monostable Multivibrator
제조업체 Fairchild Semiconductor
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74VHC221AN 데이터시트, 핀배열, 회로
April 1994
Revised May 1999
74VHC221A
Dual Non-Retriggerable Monostable Multivibrator
General Description
The VHC221A is an advanced high speed CMOS
Monostable Multivibrator fabricated with silicon gate CMOS
technology. It achieves the high speed operation similar to
equivalent Bipolar Schottky TTL while maintaining the
CMOS low power dissipation. Each multivibrator features
both a negative, A, and a positive, 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 VHC221A can be triggered on the positive
transition of the clear while A is held LOW and B is held
HIGH. The VHC221A is non-retriggerable, and therefore
cannot be retriggered until the output pulse times out. The
output pulse width is determined by the equation:
PW = (Rx)(Cx); where PW is in seconds, R is in ohms,
and C is in farads.
Limits for Rx and Cx are:
External capacitor, Cx: No limit
External resistors, Rx: VCC= 2.0V, 5 kmin
VCC > 3.0V, 1 kmin
An input protection circuit ensures that 0 to 7V can be
applied to the input pins without regard to the supply volt-
age. This device can be used to interface 5V to 3V systems
and two supply systems such as battery back up. This cir-
cuit prevents device destruction due to mismatched supply
and input voltages.
Features
s High Speed: tPD = 8.1 ns (typ) at VCC = 5V
s Low Power Dissipation: ICC = 4 µA (Max) at TA = 25°C
s Active State: ICC = 600 µA (Max) at TA = 25°C
s High Noise Immunity: VNIH = VNIL = 28% VCC (min)
s Power down protection is provided on all inputs
s Pin and function compatible with 74HC221A
Ordering Code:
Order Number Package Number
Package Description
74VHC221AM
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
74VHC221ASJ
M16D
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74VHC221AMTC
MTC16
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74VHC221AN
N16E
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Connection Diagram
IEEE/IEC
© 1999 Fairchild Semiconductor Corporation DS011680.prf
www.fairchildsemi.com




74VHC221AN pdf, 반도체, 판매, 대치품
Absolute Maximum Ratings(Note 1)
Supply Voltage (VCC)
DC Input Voltage (VIN)
DC Output Voltage (VOUT)
Input Diode Current (IIK)
Output Diode Current (IOK)
DC Output Current (IOUT)
DC VCC/Current (ICC)
Storage Temperature (TSTG)
Lead Temperature (TL)
Soldering, 10 seconds
0.5V to +7.0V
0.5V to +7.0V
0.5 to VCC +0.5V
20 mA
±20 mA
±25 mA
±50 mA
65°C to 150°C
260°C
Recommended Operating
Conditions (Note 2)
Supply Voltage (VCC)
Input Voltage (VIN)
Output Voltage (VOUT)
Operating Temperature
2.0V to +5.5V
0V to +5.5V
0V to VCC
(Topr)
Input Rise and Fall Time
40° to +85°C
(tr, tf) (CLR only)
VCC = 3.3V ±0.3V
VCC = 5.0V ±0.5V
External Capacitor - Cx
0 100 ns/V
0 20 ns/V
No Limitation (Note 3) F
External Resistor - Rx
>5 k(Note 3) (VCC = 2.0V)
>1 k(Note 3) (VCC > 3.0V)
Note 1: Absolute maximum ratings are values beyond which the device
may be damaged or have its useful life impaired. The databook specifica-
tions should be met, without exception, to ensure that the system design is
reliable over its power supply, temperature, and output/input loading vari-
ables. Fairchild does not recommended operation outside data book speci-
fications.
Note 2: Unused inputs must be used HIGH or LOW. They may not float.
Note 3: The maximum allowable values of Cx and Rx are a function of the
leakage of capacitor Cx, the leakage of the device, and leakage due to
board layout and surface resistance.
Susceptibility to externally induced noise signals may occur for Rx> 1 M.
DC Electrical Characteristics
Symbol
Parameter
VCC
(V)
VIH HIGH Level
Input Voltage
2.0
3.0 5.5
VIL LOW Level
Input Voltage
2.0
3.0 5.5
VOH HIGH Level
Output Voltage
2.0
3.0
4.5
3.0
4.5
VOL LOW Level
Output Voltage
2.0
3.0
4.5
3.0
4.5
IIN
Input Leakage Current
0 5.5
IIN Rx/Cx Terminal
5.5
Off-State Current
ICC Quiescent Supply Current 5.5
ICC
Active—State (Note 4)
3.0
Supply Current
4.5
5.5
Note 4: Per Circuit
Min
1.50
0.7 VCC
1.9
2.9
4.4
2.58
3.94
TA = 25°C
Typ
2.0
3.0
4.5
0.0
0.0
0.0
160
380
560
Max
0.50
0.3 VCC
0.1
0.1
0.1
0.36
0.36
±0.1
±0.25
4.0
250
500
750
TA = −40° to 85°C
Min Max
1.50
0.7 VCC
0.50
0.3 VCC
1.9
2.9
4.4
2.48
3.80
0.1
0.1
0.1
0.44
0.44
±1.0
±2.50
40.0
280
650
975
Units
Conditions
V
V
VIN = VIH IOH = −50 µA
V or VIL
V IOH = −4 mA
IOH = −8 mA
VIN = VIH IOL = 50 µA
or VIL
V
IOL = 4 mA
IOL = 8 mA
µA VIN = 5.5V or GND
µA VIN = VCC or GND
µA VIN = VCC or GND
VIN = VCC or GND
µA Rx/Cx = 0.5 VCC
www.fairchildsemi.com
4

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74VHC221AN 전자부품, 판매, 대치품
Physical Dimensions inches (millimeters) unless otherwise noted
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
Package Number M16A
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M16D
7 www.fairchildsemi.com

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부품번호상세설명 및 기능제조사
74VHC221A

Dual Non-Retriggerable Monostable Multivibrator

Fairchild Semiconductor
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Dual Non-Retriggerable Monostable Multivibrator

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