TC74VHC123AFT(ELKM [TOSHIBA]
IC AHC/VHC/H/U/V SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDSO16, 4.40 MM, 0.65 MM PITCH, PLASTIC, TSSOP-16, Prescaler/Multivibrator;
| 型号： | TC74VHC123AFT(ELKM |
| 厂家： | 
TOSHIBA |
| 描述： | IC AHC/VHC/H/U/V SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDSO16, 4.40 MM, 0.65 MM PITCH, PLASTIC, TSSOP-16, Prescaler/Multivibrator 时钟 光电二极管 逻辑集成电路 |
| 文件： | 总14页 (文件大小：280K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TC74VHC123,221AF/AFT/AFK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74VHC123AF,TC74VHC123AFT,TC74VHC123AFK
TC74VHC221AF,TC74VHC221AFT,TC74VHC221AFK
Dual Monostable Multivibrator
TC74VHC123AF/AFT/AFK
Retriggerble
TC74VHC123AF, TC74VHC221AF
TC74VHC123AFT, TC74VHC221AFT
TC74VHC123AFK, TC74VHC221AFK
Weight
TC74VHC221AF/AFT/AFK Non-Retriggerble
The TC74VHC123A/221A are high speed CMOS
MONOSTABLE MULTIVIBRATOR fabricated with silicon gate
C2MOS technology.
There are two trigger inputs, A input (negative edge), and B
input (positive edge). These inputs are valid for a slow rise/fall
time signal (t = t = 1 s) as they are schmitt trigger inputs. This
r
f
device may also be triggered by using CLR input (positive
edge).
After triggering, the output stays in a MONOSTABLE state for
a time period determined by the external resistor and capacitor
(R , C ). A low level at the CLR input breaks this state.
X
X
Limits for C and R are:
X
X
External capacitor, C : No limit
X
External resistor, R : V
X
= 2.0 V more than 5 kΩ
≥ 3.0 V more than 1 kΩ
CC
CC
V
An input protection circuit ensures that 0 to 5.5 V can be
applied to the input pins without regard to the supply voltage.
This device can be used to interface 5 V to 3 V systems and two
supply systems such as battery back up. This circuit prevents
device destruction due to mismatched supply and input voltages.
Features
•
•
High speed: t = 8.1 ns (typ.) at V
= 5 V
pd
CC
Low power dissipation
Standby state: 4 μA (max) at Ta = 25°C
Active state: 600 μA (max) at Ta = 25°C
SOP16-P-300-1.27A
: 0.18 g (typ.)
TSSOP16-P-0044-0.65A
VSSOP16-P-0030-0.50
: 0.06 g (typ.)
: 0.02 g (typ.)
•
•
•
•
•
High noise immunity: V
= V
= 28% V
(min)
NIH
NIL
CC
Power down protection is equipped with all inputs.
∼
Balanced propagation delays: t
t
pHL
−
pLH
Wide operating voltage range: V
(opr) = 2 to 5.5 V
CC
Pin and function compatible with 74HC123A/221A
1
2012-02-29
TC74VHC123,221AF/AFT/AFK
Pin Assignment
1
2
3
4
5
6
7
8
16
V
CC
1A
1B
15 1R /C
X
X
14 1C
X
1CLR
1Q
13 1Q
2Q
12
11
2Q
2C
2CLR
X
X
2R /C
10 2B
2A
X
GND
9
(top view)
IEC Logic Symbol
TC74VHC123A
TC74VHC221A
(1)
(2)
(1)
(2)
1
1A
1B
&
1A
1B
&
(13)
(13)
(4)
1Q
1Q
1Q
(3)
(4)
(3)
1CLR
R
C
1Q
1CLR
R
C
(14)
(15)
(14)
(15)
1C
1C
X
X
X
X
1R /C
R /C
X
1R /C
R /C
X X
X
X
X
X
X
(9)
(9)
2A
2B
2A
2B
1
&
&
(10)
(5)
(10)
(5)
2Q
2Q
2Q
2Q
(11)
(6)
(12)
(11)
(6)
(12)
2CLR
2CLR
R
R
2C
2C
X
X
C
X
C
X
(7)
(7)
2R /C
2R /C
X
X
X
X
R /C
X
R /C
X
X
X
Truth Table
Inputs
Outputs
Function
A
B
H
L
CLR
H
Q
Q
Output Enable
L
L
X
H
L
H
H
H
Inhibit
X
H
Inhibit
H
Output Enable
Output Enable
Reset
L
H
X
X
L
L
H
X: Don’t care
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2012-02-29
TC74VHC123,221AF/AFT/AFK
Block Diagram (Note 1) (Note 2)
D
D
R
X
X
C
X
C
X
V
V
CC
CC
X
R
X
14
15
R /C
6
7
C
C
R /C
X X X
X
X
X
13
4
5
Q
Q
Q
Q
1
2
9
10
A
B
A
B
12
3
11
CLR
CLR
Note 1: C , R , D are external
X
X
X
Capacitor, resistor, and diode, respectively.
Note 2: External clamping diode, D ;
X
The external capacitor is charged to V
level in the wait state, i.e. when no trigger is applied.
CC
If the supply voltage is turned off, C is discharges mainly through the internal (parasitic) diode. If C is
X
X
sufficiently large and V
drops rapidly, there will be some possibility of damaging the IC through in rush
CC
current or latch-up. If the capacitance of the supply voltage filter is large enough and V
in rush current is automatically limited and damage to the IC is avoided.
drops slowly, the
CC
The maximum value of forward current through the parasitic diode is ±20 mA.
In the case of a large C , the limit of fall time of the supply voltage is determined as follows:
X
t ≥ (V
− 0.7) C /20 mA
X
f
CC
(t is the time between the supply voltage turn off and the supply voltage reaching 0.4 V .)
f
CC
In the even a system does not satisfy the above condition, an external clamping diode (D ) is needed to
X
protect the IC from rush current.
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2012-02-29
TC74VHC123,221AF/AFT/AFK
System Diagram
TC74VHC123A
V
CC
V
V
ref
ref
L
H
Q
P
C
1
C
2
R /C
X
X
Q
N
C
X
V
CC
R
D
Q
F/F
A
CK
B
Q
Q
Q
CLR
Timing Chart
TC74VHC123A
t
rr
V
IH
A
V
V
IL
IH
B
V
V
IL
IH
CLR
V
IL
V
V
V
CC
H
ref
ref
R /C
X
X
L
GND
V
OH
Q
Q
V
V
OL
OH
V
OL
t
t
t
+ t
rr
wOUT
wOUT
wOUT
4
2012-02-29
TC74VHC123,221AF/AFT/AFK
System Diagram
TC74VHC221A
V
CC
V
V
ref
ref
L
H
Q
P
C
1
C
2
R /C
X
X
Q
N
C
X
R
D
Q
F/F
A
CK
B
Q
Q
Q
CLR
Timing Chart
TC74VHC221A
V
IH
A
V
V
IL
IH
B
V
V
IL
IH
CLR
V
IL
V
V
V
CC
H
ref
ref
R /C
X
X
L
GND
V
OH
Q
Q
V
V
OL
OH
V
OL
t
t
t
wOUT
wOUT
wOUT
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2012-02-29
TC74VHC123,221AF/AFT/AFK
Functional Description
(1) Standby state
The external capacitor (C ) is fully charged to V
in the stand-by state. That means, before
X
CC
triggering, the Q and Q transistors which are connected to the R /C node are in the off state. Two
P
N
X
X
comparators that relate to the timing of the output pulse, and two reference voltage supplies turn off.
The total supply current is only leakage current.
(2) Trigger operation
Trigger operation is effective in any of the following three cases. First, the condition where the A
input is low, and the B input has a rising signal; second, where the B input is high, and the A input
has a falling signal; and third, where the A input is low and the B input is high, and the CLR
input has a rising signal.
After a trigger becomes effective, comparators C and C start operating, and Q is turned on. The
1
2
N
external capacitor discharges through Q . The voltage level at the R /C node drops. If the R /C
X
N
X
X
X
voltage level falls to the internal reference voltage V L, the output of C becomes low. The flip-flop is
ref
1
then reset and Q turns off. At that moment C stops but C continues operating.
N
1
2
After Q turns off, the voltage at the R /C node starts rising at a rate determined by the time
N
X
X
constant of external capacitor C and resistor R .
X
X
Upon triggering, output Q becomes high, following some delay time of the internal F/F and gates. It
stays high even if the voltage of R /C changes from falling to rising. When R /C reaches the
X
X
X
X
internal reference voltage V H, the output of C becomes low, the output Q goes low and C stops its
ref
2
2
operation. That means, after triggering, when the voltage level of the R /C node reaches V H, the
X
X
ref
IC returns to its MONOSTABLE state.
With large values of C and R , and ignoring the discharge time of the capacitor and internal
X
X
delays of the IC, the width of the output pulse, t , is as follows:
w (OUT)
t
= 1.0 · C · R
X X
w (OUT)
(3) Retrigger operation (TC74VHC123A)
When a new trigger is applied to either input A or B while in the MONOSTABLE state, it is
effective only if the IC is charging C . The voltage level of the R /C node then falls to V L level
X
X
X
ref
again. Therefore the Q output stays high if the next trigger comes in before the time period set by C
X
and R .
X
If the new trigger is very close to previous trigger, such as an occurrence during the discharge cycle,
it will have no effect.
The minimum time for a trigger to be effective 2nd trigger, trr (min.), depends on VCC and CX.
(4) Reset operation
In normal operation, the CLR input is held high. If CLR is low, a trigger has no effect because
the Q output is held low and the trigger control F/F is reset. Also, Q turns on and C is charged
P
X
rapidly to V
.
CC
This means if CLR is set low, the IC goes into a wait state.
6
2012-02-29
TC74VHC123,221AF/AFT/AFK
Absolute Maximum Ratings (Note)
Characteristics
Supply voltage range
Symbol
Rating
Unit
V
−0.5 to 7.0
−0.5 to 7.0
V
V
CC
DC input voltage
V
IN
DC output voltage
Input diode current
Output diode current
DC output current
V
−0.5 to V
+ 0.5
V
OUT
CC
I
−20
mA
mA
mA
mA
mW
°C
IK
I
±20
±25
OK
I
OUT
DC V /ground current
CC
I
±50
CC
Power dissipation
P
180
D
Storage temperature
T
−65 to 150
stg
Note:
Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or
even destruction.
Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the
significant change in temperature, etc.) may cause this product to decrease in the reliability significantly
even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute
maximum ratings and the operating ranges.
Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook
(“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test
report and estimated failure rate, etc).
Operating Ranges (Note 1)
Characteristics
Symbol
Rating
Unit
Supply voltage
Input voltage
V
2.0 to 5.5
0 to 5.5
V
V
CC
V
IN
Output voltage
V
0 to V
V
OUT
CC
−40 to 85
0 to 100 (V = 3.3 ± 0.3 V)
Operating temperature
T
°C
opr
CC
0 to 20 (V
Input rise and fall time
External capacitor
External resistor
dt/dv
ns/V
F
= 5 ± 0.5 V)
CC
C
R
No limitation
(Note 2)
X
≥ 5 k (Note 3) (V
≥ 1 k (Note 3) (V
= 2.0 V)
≥ 3.0 V)
CC
Ω
X
CC
Note 1: The operating ranges must be maintained to ensure the normal operation of the device.
Unused inputs must be tied to either VCC or GND.
Note 2: The maximum allowable values of C and R are a function of leakage of capacitor C , the leakage of
X
X
X
TC74VHC123A/221A, and leakage due to board layout and surface resistance.
Susceptibility to externally induced noise signals may occur for R > 1 MΩ.
X
7
2012-02-29
TC74VHC123,221AF/AFT/AFK
Electrical Characteristics
DC Characteristics
Ta = −40 to
Ta = 25°C
Test Condition
85°C
Unit
Characteristics
Symbol
V
(V)
Min
Typ.
Max
Min
Max
CC
2.0
1.50
1.50
―
―
―
―
―
―
High-level input
voltage
V
―
―
V
V
IH
3.0 to
5.5
V
×
V
×
CC
0.7
CC
0.7
2.0
0.50
0.50
―
―
―
―
―
―
Low-level input
voltage
V
IL
3.0 to
5.5
V
×
V
×
CC
0.3
CC
0.3
2.0
3.0
4.5
3.0
4.5
2.0
3.0
4.5
3.0
4.5
1.9
2.9
4.4
2.58
3.94
―
2.0
3.0
4.5
―
―
―
1.9
2.9
4.4
2.48
3.80
―
―
―
I
= −50 μA
OH
High-level output
voltage
V
IN
V
―
―
V
V
OH
= V or V
IH IL
I
I
= −4 mA
= −8 mA
―
―
OH
―
―
―
OH
0.0
0.0
0.0
―
0.1
0.1
0.1
0.36
0.36
0.1
0.1
0.1
0.44
0.44
I
= 50 μA
―
―
OL
Low-level output
voltage
V
IN
V
―
―
OL
= V or V
IH IL
I
I
= 4 mA
= 8 mA
―
―
OL
―
―
―
OL
Input leakage
current
0 to
5.5
I
I
V
V
V
= 5.5 V or GND
―
―
―
―
―
―
±0.1
±0.25
4.0
―
―
―
±1.0
±2.5
40.0
μA
μA
μA
IN
IN
IN
IN
R /C terminal
X
X
= V
= V
or GND
or GND
5.5
5.5
IN
CC
CC
off-state current
Quiescent supply
current
I
CC
CC
3.0
4.5
5.5
―
―
―
160
380
560
250
500
750
―
―
―
280
650
975
Active-state supply
current
V
= V
or GND
IN
CC
I
μA
R /C = 0.5 V
CC
X
X
(Note)
Note:
Per circuit
8
2012-02-29
TC74VHC123,221AF/AFT/AFK
Timing Requirements (input: t = t = 3 ns)
r
f
Ta =
−40 to
85°C
Test Condition
Ta = 25°C
Typ. Limit
Characteristics
Symbol
Unit
V
(V)
Limit
5.0
5.0
5.0
5.0
―
CC
t
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
―
―
5.0
5.0
5.0
5.0
―
w (L)
Minimum pulse width
―
―
ns
ns
ns
μs
t
w (H)
Minimum clear width
( CLR )
―
t
w (L)
―
R
X
C
X
R
X
C
X
= 1 kΩ
60
39
1.5
1.2
Minimum retrigger time
= 100 pF
= 1 kΩ
―
―
t
rr
(Note)
―
―
= 0.01 μF
―
―
Note:
For TC74VHC123A only
AC Characteristics (input: t = t = 3 ns)
r
f
Ta = −40 to
Test Condition
Ta = 25°C
85°C
Characteristics
Symbol
Unit
ns
V
(V)
C
L
(pF)
Min
―
―
―
―
―
―
―
―
―
―
―
―
―
―
90
90
0.9
0.9
Typ.
13.4
15.9
8.1
Max
20.6
24.1
12.0
14.0
22.4
25.9
12.9
14.9
15.8
19.3
9.4
Min
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
―
Max
24.0
27.5
14.0
16.0
26.0
29.5
15.0
17.0
18.5
22.0
11.0
13.0
300
240
110
110
1.1
CC
15
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
Propagation delay
time
t
50
15
50
15
50
15
50
15
50
15
50
pLH
―
―
―
t
pHL
( A , B-Q, Q )
9.6
14.5
17.0
8.7
Propagation delay
time
t
t
pLH
ns
ns
pHL
( CLR trigger-Q, Q )
10.2
10.3
12.8
6.3
Propagation delay
time
t
t
pLH
pHL
( CLR -Q, Q )
7.8
11.4
240
200
110
110
1.1
C
= 28 pF
= 2 kΩ
3.3 ± 0.3
5.0 ± 0.5
160
133
100
100
1.0
X
50
50
50
ns
μs
R
X
―
C
R
= 0.01 μF 3.3 ± 0.3
90
X
Output pulse width
t
wOUT
= 10 kΩ
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
90
X
C
R
= 0.1 μF
= 10 kΩ
0.9
0.9
X
ms
1.0
1.1
1.1
X
Output pulse width
error between circuits
Δt
―
―
―
±1
―
―
―
%
wOUT
(in same package)
Input capacitance
C
―
―
4
10
―
―
10
pF
pF
IN
Power dissipation
capacitance
C
(Note)
73
―
―
PD
Note:
C
is defined as the value of the internal equivalent capacitance which is calculated from the operating
PD
current consumption without load.
Average operating current can be obtained by the equation:
I
= C ·V ·f + I ·Duty/100 + I /2 (per circuit)
PD CC IN CC’ CC
CC (opr)
(I
: active supply current)
CC’
(duty: %)
9
2012-02-29
TC74VHC123,221AF/AFT/AFK
t
rr
– V
Characteristics (typ.)
(TC74VHC123A)
CC
t
– C Characteristics (typ.)
wOUT
X
V
C
= 4.5 V
= 50 pF
Ta = 25°C
CC
L
R
X
= 1 MΩ
10
1
103
102
10
C
X
= 0.01 μF
R
R
= 100 kΩ
= 10 kΩ
X
C
= 1000 pF
= 100 pF
X
0.1
0.01
C
X
X
R
X
= 1 kΩ
0
1
2
3
4
5
6
Supply voltage
V
CC
(V)
1
10−1
102
103
104
External capacitor
C
X
(pF)
Output Pulse Width Constant K − Supply Voltage (typ.)
(external resistor (R ) = 10 kΩ: t
= K·C ·R )
X
wOUT
X X
1.2
C
X
= 1000 pF
1.1
1.0
C
X
= 0.01 μF
C
X
= 1 μF, C = 0.1 μF
X
2
3
4
5
6
Supply voltage
V
CC
(V)
Input Equivalent Circuit
INPUT
10
2012-02-29
TC74VHC123,221AF/AFT/AFK
Package Dimensions
Weight: 0.18 g (typ.)
11
2012-02-29
TC74VHC123,221AF/AFT/AFK
Package Dimensions
Weight: 0.06 g (typ.)
12
2012-02-29
TC74VHC123,221AF/AFT/AFK
Package Dimensions
Weight: 0.02 g (typ.)
13
2012-02-29
TC74VHC123,221AF/AFT/AFK
RESTRICTIONS ON PRODUCT USE
•
•
•
Toshiba Corporation, and its subsidiaries and affiliates (collectively "TOSHIBA"), reserve the right to make changes to the information
in this document, and related hardware, software and systems (collectively "Product") without notice.
This document and any information herein may not be reproduced without prior written permission from TOSHIBA. Even with
TOSHIBA's written permission, reproduction is permissible only if reproduction is without alteration/omission.
Though TOSHIBA works continually to improve Product's quality and reliability, Product can malfunction or fail. Customers are
responsible for complying with safety standards and for providing adequate designs and safeguards for their hardware, software and
systems which minimize risk and avoid situations in which a malfunction or failure of Product could cause loss of human life, bodily
injury or damage to property, including data loss or corruption. Before customers use the Product, create designs including the
Product, or incorporate the Product into their own applications, customers must also refer to and comply with (a) the latest versions of
all relevant TOSHIBA information, including without limitation, this document, the specifications, the data sheets and application notes
for Product and the precautions and conditions set forth in the "TOSHIBA Semiconductor Reliability Handbook" and (b) the
instructions for the application with which the Product will be used with or for. Customers are solely responsible for all aspects of their
own product design or applications, including but not limited to (a) determining the appropriateness of the use of this Product in such
design or applications; (b) evaluating and determining the applicability of any information contained in this document, or in charts,
diagrams, programs, algorithms, sample application circuits, or any other referenced documents; and (c) validating all operating
parameters for such designs and applications. TOSHIBA ASSUMES NO LIABILITY FOR CUSTOMERS' PRODUCT DESIGN OR
APPLICATIONS.
•
PRODUCT IS NEITHER INTENDED NOR WARRANTED FOR USE IN EQUIPMENTS OR SYSTEMS THAT REQUIRE
EXTRAORDINARILY HIGH LEVELS OF QUALITY AND/OR RELIABILITY, AND/OR A MALFUNCTION OR FAILURE OF WHICH
MAY CAUSE LOSS OF HUMAN LIFE, BODILY INJURY, SERIOUS PROPERTY DAMAGE AND/OR SERIOUS PUBLIC IMPACT
("UNINTENDED USE"). Except for specific applications as expressly stated in this document, Unintended Use includes, without
limitation, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used for
automobiles, trains, ships and other transportation, traffic signaling equipment, equipment used to control combustions or explosions,
safety devices, elevators and escalators, devices related to electric power, and equipment used in finance-related fields. IF YOU USE
PRODUCT FOR UNINTENDED USE, TOSHIBA ASSUMES NO LIABILITY FOR PRODUCT. For details, please contact your
TOSHIBA sales representative.
•
•
Do not disassemble, analyze, reverse-engineer, alter, modify, translate or copy Product, whether in whole or in part.
Product shall not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any
applicable laws or regulations.
•
•
The information contained herein is presented only as guidance for Product use. No responsibility is assumed by TOSHIBA for any
infringement of patents or any other intellectual property rights of third parties that may result from the use of Product. No license to
any intellectual property right is granted by this document, whether express or implied, by estoppel or otherwise.
ABSENT A WRITTEN SIGNED AGREEMENT, EXCEPT AS PROVIDED IN THE RELEVANT TERMS AND CONDITIONS OF SALE
FOR PRODUCT, AND TO THE MAXIMUM EXTENT ALLOWABLE BY LAW, TOSHIBA (1) ASSUMES NO LIABILITY
WHATSOEVER, INCLUDING WITHOUT LIMITATION, INDIRECT, CONSEQUENTIAL, SPECIAL, OR INCIDENTAL DAMAGES OR
LOSS, INCLUDING WITHOUT LIMITATION, LOSS OF PROFITS, LOSS OF OPPORTUNITIES, BUSINESS INTERRUPTION AND
LOSS OF DATA, AND (2) DISCLAIMS ANY AND ALL EXPRESS OR IMPLIED WARRANTIES AND CONDITIONS RELATED TO
SALE, USE OF PRODUCT, OR INFORMATION, INCLUDING WARRANTIES OR CONDITIONS OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE, ACCURACY OF INFORMATION, OR NONINFRINGEMENT.
•
•
Do not use or otherwise make available Product or related software or technology for any military purposes, including without
limitation, for the design, development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or missile
technology products (mass destruction weapons). Product and related software and technology may be controlled under the
applicable export laws and regulations including, without limitation, the Japanese Foreign Exchange and Foreign Trade Law and the
U.S. Export Administration Regulations. Export and re-export of Product or related software or technology are strictly prohibited
except in compliance with all applicable export laws and regulations.
Please contact your TOSHIBA sales representative for details as to environmental matters such as the RoHS compatibility of Product.
Please use Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances,
including without limitation, the EU RoHS Directive. TOSHIBA ASSUMES NO LIABILITY FOR DAMAGES OR LOSSES
OCCURRING AS A RESULT OF NONCOMPLIANCE WITH APPLICABLE LAWS AND REGULATIONS.
14
2012-02-29
相关型号：
TC74VHC125F(EL,K,F
Bus Driver, AHC/VHC/H/U/V Series, 4-Func, 1-Bit, True Output, CMOS, PDSO14
TOSHIBA
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