Page 1
TC74LCX273F/FT/FK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74LCX273F,TC74LCX273FT,TC74LCX273FK
Low-Voltage Octal D-Type Flip-Flop with Clear with 5-V Tolerant Inputs and Outputs
The TC74LCX273 is a high-performance CMOS octal D-type
flip-flop. Designed for use in 3.3-V systems, it achieves
high-speed operation while maintaining the CMOS low-power
dissipation.
The device is designed for low-voltage (3.3 V) V
but it could be used to interface to 5-V supply environment for
both inputs and outputs.
This 8 bit D-type flip-flop is controlled by a clock input (CK)
and a clear input (
outputs are at a low logic level.
All inputs are equipped with protection circuits against static
discharge.
CLR
). When the
CLR
input is low, the eight
applications,
CC
Features
TC74LCX273F
TC74LCX273FT
• Low-voltage operation: VCC = 1.65 to 3.6 V
• High-speed operation: t
• Output current: |I
• Latch-up performance: ＞±500 mA
• Available in JEITA SOP, TSSOP and VSSOP (US)
• Power-down protection is provided on all inputs and outputs
• Pin and function compatible with the 74 series
(74AC/VHC/HC/F/ALS/LS etc.) 273 type
Note: The Electrical Characteristics of V
from January 2009 onward.
= 8.5 ns (max) (VCC = 3.0 to 3.6 V)
pd
|/IOL = 24 mA (min) (VCC = 3.0 V)
OH
=1.8±0.15V is only applicable for products which manufactured
CC
TC74LCX273FK
Weight
SOP20-P-300-1.27A : 0.22 g (typ.)
TSSOP20-P-0044-0.65A : 0.08 g (typ.)
VSSOP20-P-0030-0.50 : 0.03 g (typ.)
2010-01-31 1
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TC74LCX273F/FT/FK
Pin Assignment
(top view)
IEC Logic Symbol
CLR 1
2
Q1
3
D1
4
D2
Q2
5
Q3
6
D3
7
8
D4
9
Q4
10
GND
Truth Table
Inputs Outputs
CLR D CK Q
L X X L Clear
H L L ⎯
H H H ⎯
H X Qn No change
20
19
18
17
16
15
14
13
12
11
V
Q8
D8
D7
Q7
Q6
D6
D5
Q5
CK
CC
Function
CK
D1
D2
D3
D4
D5
D6
D7
D8
(1)
(11)
(3)
(4)
(7)
(8)
(13)
(14)
(17)
(18)
CLR R
1D
C1
(2)
Q1
(5)
Q2
(6)
Q3
(9)
Q4
(12)
Q5
(15)
Q6
(16)
Q7
(19)
Q8
X: Don’t care
System Diagram
D1 D2 D3 D4 D5 D6 D7 D8
3
R
D
CK
Q
CLR
CK
1
11
2
Q1
4
R
D
CK
7
D
Q
CK
5
Q2
8
R
Q
D
CK
6
Q3
13
R
Q
D
CK
9
Q4
14
R
Q
D
CK
12
Q5
17
R
Q
D
CK
15
Q6
18
R
Q
16
Q7
D
CK
R
Q
19
Q8
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Absolute Maximum Ratings (Note 1)
Characteristics Symbol Rating Unit
TC74LCX273F/FT/FK
Power supply voltage V
DC input voltage V
DC output voltage V
Input diode current I
Output diode current I
DC output current I
Power dissipation P
DC VCC/ground current ICC/I
Storage temperature T
CC
IN
OUT
IK
OK
OUT
D
GND
stg
−0.5 to 7.0 (Note 2)
−0.5 to V
±50 (Note 4) mA
−0.5 to 7.0 V
−0.5 to 7.0 V
+ 0.5
CC
(Note 3)
−50 mA
±50 mA
180 mW
±100 mA
−65 to 150 °C
V
Note 1: 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).
Note 2: V
Note 3: High or low state. I
Note 4: V
= 0 V
CC
OUT <
GND, V
absolute maximum rating must be observed.
OUT
> VCC
OUT
Operating Ranges (Note 1)
Characteristics Symbol Rating Unit
Power supply voltage V
Input voltage V
Output voltage V
Output current IOH/I
Operating temperature T
Input rise and fall time dt/dv 0 to 10 (Note 7) ns/V
CC
IN
OUT
opr
1.5 to 3.6 (Note 2)
0 to 5.5 (Note 3)
0 to VCC (Note 4)
±24 (Note 5)
OL
±12 (Note 6)
Note 1: The operating ranges must be maintained to ensure the normal operation of the device.
Unused inputs must be tied to either V
or GND.
CC
Note 2: Data retention only
1.65 to 3.6
0 to 5.5 V
−40 to 85 °C
V
V
mA
Note 3: VCC = 0 V
Note 4: High or low state
Note 5: VCC = 3.0 to 3.6 V
Note 6: VCC = 2.7 to 3.0 V
Note 7: VIN = 0.8 to 2.0 V, VCC = 3.0 V
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Electrical Characteristics
TC74LCX273F/FT/FK
DC Characteristics
(Ta = −40 to 85°C)
Characteristics Symbol Test Condition
H-level
VIH
Input voltage
L-level V
H-level
IL
VOH V
IN
= V
Output voltage
L-level VOL V
Input leakage current IIN V
Power-off leakage current I
VIN/V
OFF
Quiescent supply current ICC
Increase in Icc per input ΔICC V
= V
IN
= 0 to 5.5 V 1.65 to 3.6 ⎯ ±5.0 μA
IN
OUT
V
= V
IN
V
= 3.6 to 5.5 V 1.65 to 3.6 ⎯ ±10.0
IN
= V
IN
(V)
V
CC
1.65 to 2.3 V
Min Max Unit
×0.9 ⎯
CC
2.3 to 2.7 1.7 ⎯
2.7 to 3.6
1.65 to 2.3
2.0
⎯ VCC×0.1
⎯
2.3 to 2.7 ⎯ 0.7
IH
or V
2.7 to 3.6
IOH = −100 μA 1.65 to 3.6 V
IOH = −4 mA
1.65
IOH = −8 mA 2.3 1.7 ⎯
IL
IOH = −12 mA
2.7
⎯ 0.8
－0.2 ⎯
CC
1.05 ⎯
2.2 ⎯
IOH = −18 mA 3.0 2.4 ⎯
IOH = −24 mA 3.0 2.2 ⎯
IOL = 100 μA 1.65 to 3.6 ⎯ 0.2
IOL = 4 mA 1.65 ⎯ 0.45
IH
or V
IOL = 8 mA
IL
IOL = 12 mA 2.7 ⎯ 0.4
2.3
⎯ 0.7
IOL = 16 mA 3.0 ⎯ 0.4
IOL = 24 mA 3.0 ⎯ 0.55
= 5.5 V 0 ⎯ 10.0 μA
or GND 1.65 to 3.6 ⎯ 10.0
CC
− 0.6 V 2.7 to 3.6 ⎯ 500
CC
V
V
μA
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TC74LCX273F/FT/FK
AC Characteristics
Characteristics Symbol Test Condition
Maximum clock frequency f
Propagation delay time (CK-Q)
Propagation delay time ( CLR -Q) t
Minimum pulse width (CK)
Minimum pulse width ( CLR ) t
Minimum setup time ts (Figure 1, Figure 2)
Minimum hold time th (Figure 1, Figure 2)
Minimum removal time t
Output to output skew
(Ta = −40 to 85°C)
MAX
t
PLH
t
PHL
PHL
t
w (H)
t
w (L)
w (L)
rem
t
osLH
t
osHL
(Figure 1, Figure 2)
(Figure 1, Figure 2)
(Figure 1, Figure 3)
(Figure 1, Figure 2)
(Figure 3)
(Figure 4)
Min Max Unit
(V)
V
CC
1.8±0.15 50 ⎯
2.5±0.2 100 ⎯
2.7
3.3
± 0.3 150 ⎯
1.8±0.15 ⎯ 30.0
2.5±0.2
2.7
3.3 ± 0.3 1.5 8.5
1.8±0.15 ⎯ 30.0
2.5±0.2
2.7
3.3 ± 0.3 1.5 8.5
1.8±0.15 10.0 ⎯
2.5±0.2
2.7
3.3 ± 0.3 3.3 ⎯
1.8±0.15
2.5±0.2
2.7 3.3 ⎯
3.3 ± 0.3 3.3 ⎯
1.8±0.15 10.0 ⎯
2.5±0.2 5.0 ⎯
2.7
3.3 ± 0.3 2.5 ⎯
1.8±0.15 1.5 ⎯
2.5±0.2
2.7
3.3 ± 0.3 1.5 ⎯
1.8±0.15
2.5±0.2
2.7 2.5 ⎯
3.3 ± 0.3 2.0 ⎯
(Note)
2.7 ⎯ ⎯
± 0.3 ⎯ 1.0
3.3
150
⎯
⎯ 10.5
⎯ 9.5
⎯ 10.5
⎯ 9.5
5.0
3.3
10.0
5.0
2.5
1.5
1.5
8.0
4.0
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
MHz
ns
ns
ns
ns
ns
ns
ns
ns
Note: Parameter guaranteed by design.
(t
osLH
= |t
pLHm
− t
pLHn
|, t
osHL
= |t
pHLm
− t
pHLn
|)
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Dynamic Switching Characteristics
(Ta = 25°C, input: tr = tf = 2.5 ns, CL = 50 pF, RL = 500 Ω)
TC74LCX273F/FT/FK
Characteristics Symbol
Quiet output maximum dynamic V
Quiet output minimum dynamic VOL ⎪V
OL
V
OLPVIH
⎪ V
OLV
Test Condition
= 3.3 V, VIL = 0 V 3.3 0.8 V
= 3.3 V, VIL = 0 V 3.3 0.8 V
IH
Typ. Unit
(V)
V
CC
Capacitive Characteristics
Characteristics Symbol
Input capacitance
Output capacitance
Power dissipation capacitance CPD fIN = 10 MHz (Note) 3.3 25 pF
(Ta = 25°C)
Test Condition
CIN 3.3 7 pF
C
OUT
⎯
(V)
V
CC
0 8
Typ. Unit
Note: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating
current consumption.
Average operating current can be obtained by the equation:
I
CC (opr)
= CPD･VCC･fIN + ICC/8 (per bit)
AC Test Circuit
Output Measure
L
L
C
R
pF
AC Waveform
Input
(CK)
Input
(D)
Output
(Q)
Figure 1
tr
10%
90%
V
IM
10%
V
OM
pHL
tf
90%
V
OM
t
(H) th (H) th (L)ts (L)
s
t
pLH
VIH
GND
tw (H) tw (L)
tr
t
f
VIH
GND
V
OH
V
t
OL
Figure 2 t
pLH
, t
pHL
, tw, ts, th
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TC74LCX273F/FT/FK
t
10%
r
90%
V
IM
t
rem
10%
VIH Input
GND
t
r
V
90%
V
IM
IH
GND
(
CLR
Output
(Q)
V
IH
)
tw (L)
V
OM
t
pHL
GND
V
OH
VOL
Input
(
CLR )
Input
(CK)
Figure 3 t
pHL
Figure 4 t
rem
VCC
Symbol
Input
Output VOM 1.5V VOH/2 VOH/2
VIH 2.7V VCC V
VIM 1.5V VCC/2 VCC/2
tr,tf 2.5ns 2.0ns 2.0ns
CL 50pF 30pF 30pF Load
R
3.3
± 0.3 V
2.7V
500Ω 500Ω 1kΩ
L
2.5
± 0.2 V 1.8 ± 0.15 V
CC
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Package Dimensions
TC74LCX273F/FT/FK
Weight: 0.22 g (typ.)
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Package Dimensions
TC74LCX273F/FT/FK
Weight: 0.08 g (typ.)
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Package Dimensions
TC74LCX273F/FT/FK
Weight: 0.03 g (typ.)
2010-01-31 10
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TC74LCX273F/FT/FK
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.
APPLICATIONS.
• Product is intended for use in general electronics applications (e.g., computers, personal equipment, office equipment, measuring
equipment, industrial robots and home electronics appliances) or for specific applications as expressly stated in this document.
Product is neither intended nor warranted for use in equipment 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 or serious
public impact (“Unintended Use”). 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. Do not use Product for Unintended Use unless specifically permitted in this
document.
• 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
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.
TOSHIBA ASSUMES NO LIABILITY FOR CUSTOMERS’ PRODUCT DESIGN OR
2010-01-31 11
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