74HCT221D [NEXPERIA]
Dual non-retriggerable monostable multivibrator with resetProduction;
| 型号： | 74HCT221D |
| 厂家： | 
Nexperia |
| 描述： | Dual non-retriggerable monostable multivibrator with resetProduction 时钟 PC 输入元件 光电二极管 逻辑集成电路 |
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74HCT221
Dual non-retriggerable monostable multivibrator with reset
Rev. 3 — 26 October 2016
Product data sheet
1. General description
The 74HCT221 is a dual non-retriggerable monostable multivibrator. Each multivibrator
features edge-triggered inputs (nA and nB), either of which can be used as an enable
input. Pulse triggering occurs at a particular voltage level and is not directly related to the
transition time of the input pulse. Schmitt-trigger input circuitry for the nB inputs allow
jitter-free triggering from inputs with slow transition rates, providing the circuit with
excellent noise immunity. Once triggered, the outputs (nQ, nQ) are independent of further
transitions of nA and nB inputs. The output pulse width is defined by the following
relationship: tW = 0.7 CEXT REXT The output pulses can be terminated by the active
LOW reset inputs (nRD). Pulse width stability is achieved through internal compensation
and is virtually independent of VCC and temperature. In most applications pulse stability
will only be limited by the accuracy of the external timing components. Inputs include
clamp diodes. This enables the use of current limiting resistors to interface inputs to
voltages in excess of VCC
.
2. Features and benefits
Input levels:
For 74HCT221: TTL level
Pulse width variance is typically less than 5%
Direct reset terminates output pulse
Schmitt-trigger action on nB inputs
ESD protection:
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
Specified from 40 C to +85 C and from 40 C to +125 C
3. Ordering information
Table 1.
Type number Package
Temperature range Name Description
40 C to +125 C SO16 plastic small outline package; 16 leads; body width 3.9 mm
Ordering information
Version
74HCT221D
SOT109-1
74HCT221
Nexperia
Dual non-retriggerable monostable multivibrator with reset
4. Functional diagram
ꢀꢅ
ꢀ&(;7
ꢀꢄ
ꢀ5(;7ꢃ&(;7
6
ꢀꢂ
ꢀ4
ꢀ4
4
4
ꢀ
ꢀ$
7
ꢅ
ꢁ
ꢂ
ꢀ%
5'
ꢀ5'
ꢉ
ꢈ
ꢁ&(;7
ꢁ5(;7ꢃ&(;7
6
ꢄ
ꢁ4
ꢁ4
4
4
ꢆ
ꢁ$
7
ꢀꢁ
ꢀꢇ
ꢀꢀ
ꢁ%
5'
ꢁ5'
DDDꢀꢁꢂꢃꢄꢂꢃ
Fig 1. Functional diagram
ꢀꢅ
ꢀꢄ
&;
ꢀꢂ
ꢅ
5&;
ꢀ
ꢁ
ꢊ
ꢀ&(;7
ꢀꢅ
ꢉ
ꢁ&(;7
ꢂ
5
ꢀ5(;7ꢃ&(;7 ꢀꢄ
ꢁ5(;7ꢃ&(;7
ꢈ
ꢉ
ꢈ
6
&;
ꢀ4 ꢀꢂ
ꢄ
4
4
5&;
ꢁ4
ꢄ
ꢀ
ꢆ
ꢀ$
ꢁ$
7
ꢆ
ꢊ
ꢀ4
ꢅ
ꢀꢇ
ꢁ
ꢀ%
ꢀꢁ
ꢁ4 ꢀꢁ
5'
ꢀꢇ ꢁ%
ꢀꢀ
5
ꢂ
ꢀ5'
ꢀꢀ
DDDꢀꢁꢂꢃꢄꢂꢅ
ꢁ5'
DDDꢀꢁꢂꢃꢄꢂꢆ
Fig 2. Logic symbol
Fig 3. IEC logic symbol
74HCT221
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 3 — 26 October 2016
2 of 19
74HCT221
Nexperia
Dual non-retriggerable monostable multivibrator with reset
Q$
Q%
Q5'
9
&&
SRZHUꢋRQ
UHVHW
5
Q5(;7ꢃ&(;7
4
'
&
&
9
&&
))
9
&&
SXOOꢋGRZQ
LSꢋꢌRS
9
'
&
&
4
4
&&
))
5
Q4
Q4
Q&(;7
*1'
DDDꢀꢁꢂꢃꢄꢂꢇ
Fig 4. Logic diagram
9
&&
5
(;7
&
(;7
*1'
Q&(;7
Q5(;7ꢃ&(;7
DDDꢀꢁꢂꢃꢄꢂꢄ
It is recommended to connect pins nCEXT externally to the GND pin.
Fig 5. Timing component connections
74HCT221
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 3 — 26 October 2016
3 of 19
74HCT221
Nexperia
Dual non-retriggerable monostable multivibrator with reset
5. Pinning information
5.1 Pinning
ꢀꢁ+&7ꢂꢂꢃ
ꢀ
ꢁ
ꢂ
ꢅ
ꢄ
ꢉ
ꢈ
ꢍ
ꢀꢉ
ꢀꢄ
ꢀꢅ
ꢀꢂ
ꢀꢁ
ꢀꢀ
ꢀꢇ
ꢆ
ꢀ$
9
&&
ꢀ%
ꢀ5'
ꢀ5(;7ꢃ&(;7
ꢀ&(;7
ꢀ4
ꢀ4
ꢁ4
ꢁ4
ꢁ&(;7
ꢁ5(;7ꢃ&(;7
*1'
ꢁ5'
ꢁ%
ꢁ$
DDDꢀꢁꢂꢃꢄꢂꢈ
Fig 6. Pin configuration for SO16
5.2 Pin description
Table 2.
Symbol
1A
Pin description
Pin
Description
1
negative-edge triggered input 1
positive-edge triggered input 1
1B
2
1RD
3
direct reset LOW and positive-edge triggered input 1
active LOW output 1
1Q
4
2Q
5
active HIGH output 2
2CEXT
2REXT/CEXT
GND
6
external capacitor connection 2
external resistor and capacitor connection 2
ground (0 V)
7
8
2A
9
negative-edge triggered input 2
positive-edge triggered input 2
direct reset LOW and positive-edge triggered input 2
active LOW output 2
2B
10
11
12
13
14
15
16
2RD
2Q
1Q
active HIGH output 1
1CEXT
1REXT/CEXT
VCC
external capacitor connection 1
external resistor and capacitor connection 1
supply voltage
74HCT221
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 3 — 26 October 2016
4 of 19
74HCT221
Nexperia
Dual non-retriggerable monostable multivibrator with reset
6. Functional description
Table 3.
Function table[1]
Input
nRD
L
Output
nA
X
nB
X
nQ
nQ
H
L
X
H
X
X
L[2]
L[2]
H[2]
H[2]
X
L
H
L
H
H
H
[3]
[3]
L
[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; = LOW-to-HIGH transition; = HIGH-to-LOW transition;
= one HIGH level output pulse; = one LOW level output pulse.
[2] If the monostable was triggered before this condition was established, the pulse will continue as programmed.
[3] For this combination the reset input must be LOW and the following sequence must be used:
pin nA must be set HIGH or pin nB set LOW; then pin nA must be LOW and pin nB set HIGH. Now the reset input goes from
LOW-to-HIGH and the device will be triggered.
7. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
VCC
IIK
Parameter
Conditions
Min
Max Unit
supply voltage
0.5
+7
V
input clamping current
output clamping current
output current
VI < 0.5 V or VI > VCC + 0.5 V
VO < 0.5 V or VO > VCC + 0.5 V
-
-
-
20
20
25
mA
mA
mA
IOK
IO
except for pins nREXT/CEXT;
VO = 0.5 V to (VCC + 0.5 V)
ICC
supply current
-
50
-
mA
mA
IGND
Tstg
Ptot
ground current
50
65
-
storage temperature
total power dissipation
+150 C
[1]
SO16 package
500
mW
[1] For SO16 package: Ptot derates linearly with 8 mW/K above 70 C.
74HCT221
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 3 — 26 October 2016
5 of 19
74HCT221
Nexperia
Dual non-retriggerable monostable multivibrator with reset
8. Recommended operating conditions
Table 5.
Recommended operating conditions
Symbol Parameter
Conditions
Min
4.5
0
Typ
Max
5.5
Unit
V
VCC
VI
supply voltage
5.0
input voltage
-
-
VCC
VCC
V
VO
output voltage
0
V
t/V
input transition rise and fall rate
nA, nRD input
VCC = 4.5 V
-
1.67
+25
139
ns/V
Tamb
ambient temperature
40
+125
C
9. Static characteristics
Table 6.
Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Conditions
25 C
40 C to +85 C 40 C to +125 C Unit
Min Typ Max
Min
Max
Min
Max
VIH
VIL
HIGH-level
input voltage
VCC = 4.5 V to 5.5 V
VCC = 4.5 V to 5.5 V
2.0
1.6
-
2.0
-
2.0
-
V
V
LOW-level
-
1.2
0.8
-
0.8
-
0.8
input voltage
VOH
HIGH-level
output voltage
VI = VIH or VIL; VCC = 4.5 V
IO = 20 A
4.4
4.5
-
-
4.4
-
-
4.4
3.7
-
-
V
V
IO = 4 mA
3.98 4.32
3.84
VOL
LOW-level
output voltage
VI = VIH or VIL; VCC = 4.5 V
IO = 20 A
-
-
-
0
0.1
-
-
-
0.1
-
-
-
0.1
0.4
V
IO = 4.0 mA
0.15 0.26
0.33
1.0
V
II
input leakage VI = VCC or GND; VCC = 5.5 V
current
-
0.1
1.0
A
ICC
ICC
supply current VI = VCC or GND; IO = 0 A;
VCC = 5.5 V
-
-
8.0
-
80
-
160
A
additional
supply current VI = VCC 2.1 V;
other inputs at VCC or GND;
per input pin; IO = 0 A;
VCC = 4.5 V to 5.5 V
pin nB
-
-
-
30
50
108
180
-
-
-
-
135
225
-
-
-
-
147
245
-
A
A
pF
pins nA, nRD
CI
input
3.5
capacitance
74HCT221
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 3 — 26 October 2016
6 of 19
74HCT221
Nexperia
Dual non-retriggerable monostable multivibrator with reset
10. Dynamic characteristics
Table 7.
Dynamic characteristics
Voltages are referenced to GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit see Figure 15.
Symbol Parameter
Conditions
25 C
40 C to +85 C 40 C to +125 C Unit
Min Typ Max
Min
Max
Min
Max
tPLH
LOW to HIGH CEXT = 0 pF; REXT = 5 k;
propagation
delay
see Figure 7 and Figure 8
nA, nRD to nQ (trigger)
VCC = 4.5 V
-
-
30
36
50
-
-
-
63
-
-
-
75
-
ns
ns
VCC = 5 V; CL = 15 pF
nB to nQ (trigger)
VCC = 4.5 V
-
-
24
36
42
-
-
-
53
-
-
-
63
-
ns
ns
VCC = 5 V; CL = 15 pF
nRD to nQ (reset)
VCC = 4.5 V
-
-
31
36
51
-
-
-
64
-
-
-
77
-
ns
ns
VCC = 5 V; CL = 15 pF
tPHL
HIGH to LOW CEXT = 0 pF; REXT = 5 k;
propagation
delay
see Figure 7 and Figure 8
nA to nQ (trigger)
VCC = 4.5 V
-
-
26
32
44
-
-
-
55
-
-
-
75
-
ns
ns
VCC = 5 V; CL = 15 pF
nB to nQ (trigger)
VCC = 4.5 V
-
-
21
32
35
-
-
-
44
-
-
-
53
-
ns
ns
VCC = 5 V; CL = 15 pF
nRD to nQ (trigger)
VCC = 4.5 V
-
-
26
32
43
-
-
-
54
-
-
-
65
-
ns
ns
VCC = 5 V; CL = 15 pF
nRD to nQ (reset)
VCC = 4.5 V
-
-
-
26
32
7
43
-
-
-
-
54
-
-
-
-
65
-
ns
ns
ns
VCC = 5 V; CL = 15 pF
[1]
tt
transition time VCC = 4.5 V; see Figure 7
15
19
22
74HCT221
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 3 — 26 October 2016
7 of 19
74HCT221
Nexperia
Dual non-retriggerable monostable multivibrator with reset
Table 7.
Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit see Figure 15.
Symbol Parameter
Conditions
25 C
40 C to +85 C 40 C to +125 C Unit
Min Typ Max
Min
Max
Min
Max
tW
pulse width
nA LOW; nB HIGH; (trigger);
see Figure 7
VCC = 4.5 V
20
22
13
13
-
-
25
28
-
-
30
33
-
-
ns
ns
nRD LOW; see Figure 10
VCC = 4.5 V
nQ HIGH and nQ LOW;
see Figure 8
VCC = 5 V; CEXT = 100 nF;
630 700 770
602
798
595
805
s
REXT = 10 k
nQ or nQ (trigger);
see Figure 8
VCC = 4.5 V; CEXT = 28 pF;
REXT = 2 k
-
-
140
1.5
7
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
ns
s
s
ns
k
pF
VCC = 4.5 V; CEXT = 1 nF;
REXT = 2 k
-
V
CC = 4.5 V; CEXT = 1 nF;
-
-
-
-
-
REXT = 10 k
trec
recovery time nRD to nA, nB;
see Figure 11
20
2
12
-
25
-
30
-
REXT
CEXT
external
timing resistor
VCC = 5.0 V; see Figure 13
1000
external
timing
VCC = 5.0 V; see Figure 13
no limits
capacitor
74HCT221
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 3 — 26 October 2016
8 of 19
74HCT221
Nexperia
Dual non-retriggerable monostable multivibrator with reset
Table 7.
Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit see Figure 15.
Symbol Parameter
Conditions
25 C
40 C to +85 C 40 C to +125 C Unit
Min Typ Max
Min
Max
Min
Max
[2]
CPD
power
per monostable;
-
96
-
-
-
-
-
pF
dissipation
capacitance
VI = GND to VCC 1.5 V
[1] tt is the same as tTHL and tTLH
[2] CPD is used to determine the dynamic power dissipation (PD in W).
PD = CPD VCC2 fi + (CL VCC2 fo) + 0.33 CEXT VCC2 fo + D 28 VCC where:
fi = input frequency in MHz;
fo = output frequency in MHz;
D = duty factor in %;
CL = output load capacitance in pF;
VCC = supply voltage in V;
CEXT = timing capacitance in pF;
(CL VCC2 fo) sum of outputs.
11. Waveforms and graphs
W
W
:
9
,
Q$ꢌLQSXW
*1'
9
9
0
0
:
9
,
Q%ꢌLQSXW
*1'
W
3/+
9
2+
9
<
Q4ꢌRXWSXW
9
9
0
9
;
9
2/
W
7+/
W
:
9
2+
9
<
Q4ꢌRXWSXW
0
W
9
;
9
2/
W
3+/
7/+
DDDꢀꢁꢂꢃꢄꢉꢊ
Measurement points are given in Table 8.
OL and VOH are typical voltage output levels that occur with the output load.
V
Fig 7. Propagation delay from input (nA, nB) to output (nQ, nQ), nA, nB pulse widths and output transition
times
74HCT221
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 3 — 26 October 2016
9 of 19
74HCT221
Nexperia
Dual non-retriggerable monostable multivibrator with reset
Table 8.
Input
VM
Measurement points
Output
VM
VX
VY
1.3 V
1.3 V
0.1VCC
0.9VCC
9
,
9
0
Q5'LQSXW
*1'
W
W
3+/
3/+
9
2+
Q4ꢌRXWSXW
9
0
9
2/
9
2+
Q4ꢌRXWSXW
9
0
9
2/
DDDꢀꢁꢂꢃꢄꢉꢂ
Measurement points are given in Table 8.
OL and VOH are typical voltage output levels that occur with the output load.
V
Fig 8. Propagation delay from reset input (nRD) to outputs (nQ, nQ)
Q%ꢌLQSXW
W
:
Q$ꢌLQSXW
W
:
Q4ꢌRXWSXW
W
W
:
:
DDDꢀꢁꢂꢃꢄꢉꢃ
nRD = HIGH
Fig 9. Output pulse control
74HCT221
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 3 — 26 October 2016
10 of 19
74HCT221
Nexperia
Dual non-retriggerable monostable multivibrator with reset
Q%ꢌLQSXW
Q5'ꢌLQSXW
Q4ꢌRXWSXW
W
W
:
:
DDDꢀꢁꢂꢃꢄꢉꢅ
nA = LOW
Fig 10. Output pulse control using reset input nRD
W
:
9
,
9
0
Q5'ꢌLQSXW
*1'
W
W
UHF
UHF
9
,
Q%ꢌLQSXW
*1'
9
9
0
9
,
Q$ꢌLQSXW
*1'
0
DDDꢀꢁꢂꢃꢄꢉꢆ
Measurement points are given in Table 8.
Fig 11. Reset input (nRD) to inputs nA or nB recovery times
74HCT221
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 3 — 26 October 2016
11 of 19
C.
ꢌIDFWRU
ꢀꢐꢇ
74HCT221
Nexperia
Dual non-retriggerable monostable multivibrator with reset
DDDꢀꢁꢂꢃꢄꢉꢇ
ꢉ
ꢄ
ꢅ
ꢂ
ꢁ
ꢀꢇ
W
:
ꢎQVꢏ
ꢀꢇ
ꢎꢀꢏ
ꢎꢁꢏ
ꢀꢇ
ꢀꢇ
ꢀꢇ
ꢎꢂꢏ
ꢎꢅꢏ
ꢀꢇ
ꢀ
ꢋꢀ
ꢀꢇ
ꢁ
ꢂ
ꢅ
ꢄ
ꢉ
ꢈ
ꢍ
ꢀꢇ
ꢀꢇ
ꢀꢇ
ꢀꢇ
ꢀꢇ
ꢀꢇ
ꢀꢇ
ꢀꢇ
ꢌꢎS)ꢏ
&
(;7
VCC = 4.5 V; Tamb = 25 C.
EXT = 100 k
(1)
R
(2) REXT = 50 k
(3) REXT = 10 k
(4) REXT = 2 k
Fig 12. Typical output pulse width as a function of the external capacitor
DDDꢀꢁꢂꢃꢄꢉꢄ
DDDꢀꢁꢂꢃꢄꢉꢈ
ꢈꢁꢇ
W
:
ꢎVꢏ
ꢈꢀꢄ
ꢇꢐꢆ
ꢇꢐꢍ
ꢇꢐꢈ
ꢈꢀꢇ
ꢈꢇꢄ
ꢈꢇꢇ
ꢎꢀꢏ
ꢎꢁꢏ
ꢎꢂꢏ
ꢎꢅꢏ
ꢋꢄꢇ
ꢇ
ꢀꢇꢇ
ꢀꢄꢇ
ꢌꢎ&ꢏ
ꢅꢐꢄ
ꢄꢐꢇ
ꢄꢐꢄ
7
9
ꢌꢎ9ꢏ
&&
DPE
CEXT = 0.1 F; REXT = 10 k.; VCC = 5.0 V
REXT = 10 k; Tamb = 25 C.
CEXT = 0.001 F
(1)
(2) CEXT = 0.01 F
(3) CEXT = 0.1 F
(4)
CEXT = 1 F
Fig 13. Typical output pulse width as a function of the
ambient temperature
Fig 14. “K” factor as function of the supply voltage
74HCT221
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©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 3 — 26 October 2016
12 of 19
74HCT221
Nexperia
Dual non-retriggerable monostable multivibrator with reset
W
:
9
,
ꢆꢇꢌꢒ
QHJDWLYHꢌ
SXOVH
9
9
9
0
0
0
ꢀꢇꢌꢒ
ꢇꢌ9
W
W
U
I
W
W
U
I
9
,
ꢆꢇꢌꢒ
SRVLWLYHꢌ
SXOVH
9
0
ꢀꢇꢌꢒ
ꢇꢌ9
W
:
9
9
&&
&&
9
,
9
2
ꢌ
5
/
6ꢀ
*
RSHQ
'87
5
7
&
/
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Test data is given in Table 9.
Definitions test circuit:
RT = Termination resistance should be equal to output impedance Zo of the pulse generator.
CL = Load capacitance including jig and probe capacitance.
RL = Load resistance.
S1 = Test selection switch.
Fig 15. Test circuit for measuring switching times
Table 9.
Input
VI
Test data
Load
S1 position
tPHL, tPLH
open
tr, tf
CL
RL
3 V
6 ns
15 pF, 50 pF
1 k
74HCT221
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 3 — 26 October 2016
13 of 19
74HCT221
Nexperia
Dual non-retriggerable monostable multivibrator with reset
12. Application information
12.1 Power-down considerations
A large capacitor CEXT may cause problems when powering-down the monostable due to
the energy stored in this capacitor. When a system containing this device is
powered-down or a rapid decrease of VCC to zero occurs, the monostable may sustain
damage, due to the capacitor discharging through the input protection diodes. To avoid
this possibility, use a damping diode (DEXT) preferably a germanium or Schottky type
diode able to withstand large current surges and connect as shown in Figure 16.
'
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(;7
5
9
&&
*1'
Q&(;7
Q5(;7ꢃ&(;7
DDDꢀꢁꢂꢃꢄꢃꢁ
Fig 16. Power-down protection circuit
74HCT221
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 3 — 26 October 2016
14 of 19
74HCT221
Nexperia
Dual non-retriggerable monostable multivibrator with reset
13. Package outline
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Fig 17. Package outline SOT109-1 (SO16)
74HCT221
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 3 — 26 October 2016
15 of 19
74HCT221
Nexperia
Dual non-retriggerable monostable multivibrator with reset
14. Abbreviations
Table 10. Abbreviations
Acronym
CMOS
DUT
Abbreviation
Complementary Metal Oxide Semiconductor
Device Under Test
ElectroStatic Discharge
Human Body Model
Machine Model
ESD
HBM
MM
15. Revision history
Table 11. Revision history
Document ID
74HCT221 v.3
Modifications:
Release date
20161026
Data sheet status
Change notice
Supersedes
Product data sheet
-
74HC_HCT221 v.2
• The format of this data sheet has been redesigned to comply with the new identity
guidelines of NXP Semiconductors.
• Legal texts have been adapted to the new company name where appropriate.
• Type numbers 74HC221N, 74HC221D, 74HC221DB and 74HCT221N removed.
74HC_HCT221 v.2
19901201
Product specification
-
-
74HCT221
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 3 — 26 October 2016
16 of 19
74HCT221
Nexperia
Dual non-retriggerable monostable multivibrator with reset
16. Legal information
16.1 Data sheet status
Document status[1][2]
Product status[3]
Development
Definition
Objective [short] data sheet
This document contains data from the objective specification for product development.
This document contains data from the preliminary specification.
This document contains the product specification.
Preliminary [short] data sheet Qualification
Product [short] data sheet Production
[1]
[2]
[3]
Please consult the most recently issued document before initiating or completing a design.
The term ‘short data sheet’ is explained in section “Definitions”.
The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.nexperia.com.
Suitability for use — Nexperia products are not designed,
16.2 Definitions
authorized or warranted to be suitable for use in life support, life-critical or
safety-critical systems or equipment, nor in applications where failure or
malfunction of a Nexperia product can reasonably be expected
to result in personal injury, death or severe property or environmental
damage. Nexperia and its suppliers accept no liability for
inclusion and/or use of Nexperia products in such equipment or
applications and therefore such inclusion and/or use is at the customer’s own
risk.
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. Nexperia does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is intended
for quick reference only and should not be relied upon to contain detailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local Nexperia sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. Nexperia makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Customers are responsible for the design and operation of their applications
and products using Nexperia products, and Nexperia
accepts no liability for any assistance with applications or customer product
design. It is customer’s sole responsibility to determine whether the Nexperia
product is suitable and fit for the customer’s applications and
products planned, as well as for the planned application and use of
customer’s third party customer(s). Customers should provide appropriate
design and operating safeguards to minimize the risks associated with their
applications and products.
Product specification — The information and data provided in a Product
data sheet shall define the specification of the product as agreed between
Nexperia and its customer, unless Nexperia and
customer have explicitly agreed otherwise in writing. In no event however,
shall an agreement be valid in which the Nexperia product is
deemed to offer functions and qualities beyond those described in the
Product data sheet.
Nexperia does not accept any liability related to any default,
damage, costs or problem which is based on any weakness or default in the
customer’s applications or products, or the application or use by customer’s
third party customer(s). Customer is responsible for doing all necessary
testing for the customer’s applications and products using Nexperia
products in order to avoid a default of the applications and
16.3 Disclaimers
Limited warranty and liability — Information in this document is believed to
be accurate and reliable. However, Nexperia does not give any
representations or warranties, expressed or implied, as to the accuracy or
completeness of such information and shall have no liability for the
consequences of use of such information. Nexperia takes no
responsibility for the content in this document if provided by an information
source outside of Nexperia.
the products or of the application or use by customer’s third party
customer(s). Nexperia does not accept any liability in this respect.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) will cause permanent
damage to the device. Limiting values are stress ratings only and (proper)
operation of the device at these or any other conditions above those given in
the Recommended operating conditions section (if present) or the
Characteristics sections of this document is not warranted. Constant or
repeated exposure to limiting values will permanently and irreversibly affect
the quality and reliability of the device.
In no event shall Nexperia be liable for any indirect, incidental,
punitive, special or consequential damages (including - without limitation - lost
profits, lost savings, business interruption, costs related to the removal or
replacement of any products or rework charges) whether or not such
damages are based on tort (including negligence), warranty, breach of
contract or any other legal theory.
Terms and conditions of commercial sale — Nexperia
products are sold subject to the general terms and conditions of commercial
sale, as published at http://www.nexperia.com/profile/terms, unless otherwise
agreed in a valid written individual agreement. In case an individual
agreement is concluded only the terms and conditions of the respective
agreement shall apply. Nexperia hereby expressly objects to
applying the customer’s general terms and conditions with regard to the
purchase of Nexperia products by customer.
Notwithstanding any damages that customer might incur for any reason
whatsoever, Nexperia’s aggregate and cumulative liability towards
customer for the products described herein shall be limited in accordance
with the Terms and conditions of commercial sale of Nexperia.
Right to make changes — Nexperia reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
No offer to sell or license — Nothing in this document may be interpreted or
construed as an offer to sell products that is open for acceptance or the grant,
conveyance or implication of any license under any copyrights, patents or
other industrial or intellectual property rights.
74HCT221
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 3 — 26 October 2016
17 of 19
74HCT221
Nexperia
Dual non-retriggerable monostable multivibrator with reset
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from competent authorities.
Nexperia’s specifications such use shall be solely at customer’s
own risk, and (c) customer fully indemnifies Nexperia for any
liability, damages or failed product claims resulting from customer design and
use of the product for automotive applications beyond Nexperia’s
standard warranty and Nexperia’s product specifications.
Non-automotive qualified products — Unless this data sheet expressly
states that this specific Nexperia product is automotive qualified,
the product is not suitable for automotive use. It is neither qualified nor tested
in accordance with automotive testing or application requirements. Nexperia
accepts no liability for inclusion and/or use of
Translations — A non-English (translated) version of a document is for
reference only. The English version shall prevail in case of any discrepancy
between the translated and English versions.
non-automotive qualified products in automotive equipment or applications.
In the event that customer uses the product for design-in and use in
automotive applications to automotive specifications and standards, customer
(a) shall use the product without Nexperia’s warranty of the
product for such automotive applications, use and specifications, and (b)
whenever customer uses the product for automotive applications beyond
16.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
17. Contact information
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
74HCT221
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 3 — 26 October 2016
18 of 19
74HCT221
Nexperia
Dual non-retriggerable monostable multivibrator with reset
18. Contents
1
2
3
4
General description. . . . . . . . . . . . . . . . . . . . . . 1
Features and benefits . . . . . . . . . . . . . . . . . . . . 1
Ordering information. . . . . . . . . . . . . . . . . . . . . 1
Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2
5
5.1
5.2
Pinning information. . . . . . . . . . . . . . . . . . . . . . 4
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4
6
Functional description . . . . . . . . . . . . . . . . . . . 5
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 5
Recommended operating conditions. . . . . . . . 6
Static characteristics. . . . . . . . . . . . . . . . . . . . . 6
Dynamic characteristics . . . . . . . . . . . . . . . . . . 7
Waveforms and graphs . . . . . . . . . . . . . . . . . . . 9
Application information. . . . . . . . . . . . . . . . . . 14
Power-down considerations . . . . . . . . . . . . . . 14
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 15
Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . 16
Revision history. . . . . . . . . . . . . . . . . . . . . . . . 16
7
8
9
10
11
12
12.1
13
14
15
16
Legal information. . . . . . . . . . . . . . . . . . . . . . . 17
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 17
Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 18
16.1
16.2
16.3
16.4
17
18
Contact information. . . . . . . . . . . . . . . . . . . . . 18
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
© Nexperia B.V. 2017. All rights reserved
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
Date of release: 26 October 2016
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