TC74LCX125F/FT/FK
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC74LCX125F,TC74LCX125FT,TC74LCX125FK
Low-Voltage Quad Bus Buffer with 5-V Tolerant Inputs and Outputs
.
The TC74LCX125 is a high-performance CMOS quad bus
buffers. 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) VCC applications,
but it could be used to interface to 5-V supply environment for
inputs.
This device requires the 3-state control input OE to be set
high to place the output into the high impedance state.
All inputs are equipped with protection circuits against static
discharge.
TC74LCX125FT
Features
•
Low-voltage operation: VCC = 1.65 to 3.6 V
•
High-speed operation: tpd = 6.0 ns (max) (VCC = 3.0 to 3.6 V)
•
Ouput current: |IOH|/IOL = 24 mA (min) (VCC = 3.0 V)
•
Latch-up performance: ＞±500 mA
•
Available in JEITA SOP, TSSOP and VSSOP (US)
•
Power-down protection is provided on all inputs and outputs
•
TC74LCX125F
Pin and function compatible with the 74 series
(74AC/VHC/HC/F/ALS/LS etc.) 125 type
TC74LCX125FK
Weight
SOP14-P-300-1.27A
TSSOP14-P-0044-0.65A
VSSOP14-P-0030-0.50
: 0.18 g (typ.)
: 0.06 g (typ.)
: 0.02 g (typ.)
Note: The Electrical Characteristics of VCC=1.8±0.15V is only applicable for products which manufactured
from January 2009 onward.
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TC74LCX125F/FT/FK
Pin Assignment (top view)
IEC Logic Symbol
1OE
1
14
VCC
1A
2
13
4OE
1Y
3
12
4A
4
11
4Y
2A
5
10
3OE
2Y
6
9
3A
GND
7
8
3Y
2OE
1 OE
1A
2 OE
2A
3 OE
3A
4 OE
4A
1
2
4
5
10
9
13
12
EN
3
1Y
6
2Y
8
3Y
11
4Y
Truth Table
Inputs
Outputs
OE
A
Y
H
X
Z
L
L
L
L
H
H
X: Don’t care
Z: High impedance
Absolute Maximum Ratings (Note 1)
Characteristics
Symbol
Rating
Unit
Power supply voltage
VCC
−0.5 to 7.0
V
DC input voltage
VIN
−0.5 to 7.0
V
−0.5 to 7.0 (Note 2)
DC output voltage
VOUT
−0.5 to VCC + 0.5
(Note 3)
V
Input diode current
IIK
−50
Output diode current
IOK
±50
DC output current
IOUT
±50
mA
Power dissipation
PD
180
mW
ICC/IGND
±100
mA
Tstg
−65 to 150
°C
DC VCC/ground current
Storage temperature
mA
(Note 4)
mA
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 range (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: Output in OFF state
Note 3: High or low state. IOUT absolute maximum rating must be observed.
Note 4: VOUT < GND, VOUT > VCC
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TC74LCX125F/FT/FK
Operating Ranges (Note 1)
Characteristics
Symbol
Power supply voltage
VCC
Input voltage
VIN
Output voltage
VOUT
Output current
IOH/IOL
Rating
Unit
1.65 to 3.6
1.5 to 3.6
(Note 2)
0 to 5.5
V
0 to 5.5
(Note 3)
0 to VCC
(Note 4)
±24
(Note 5)
±12
(Note 6)
Operating temperature
Topr
−40 to 85
Input rise and fall time
dt/dv
0 to 10
V
V
mA
°C
(Note 7)
ns/V
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: Data retention only
Note 3: Output in OFF state
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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TC74LCX125F/FT/FK
Electrical Characteristics
DC Characteristics (Ta = −40 to 85°C)
Characteristics
H-level
Symbol
Test Condition
1.7
⎯
2.7 to 3.6
2.0
⎯
1.65 to 2.3
⎯
VCC×0.1
2.3 to 2.7
⎯
0.7
2.7 to 3.6
⎯
0.8
1.65 to 3.6
VCC−0.2
⎯
IOH = −4 mA
1.65
1.05
⎯
IOH = −8 mA
2.3
1.7
⎯
IOH = −12 mA
2.7
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
IOL = 8 mA
2.3
⎯
0.7
IOL = 12 mA
2.7
⎯
0.4
IOL = 16 mA
3.0
⎯
0.4
IOL = 24 mA
3.0
⎯
0.55
1.65 to 3.6
⎯
±5.0
μA
1.65 to 3.6
⎯
±5.0
μA
VIN/VOUT = 5.5 V
0
⎯
10.0
μA
VIN = VCC or GND
1.65 to 3.6
⎯
10.0
VIN/VOUT = 3.6 to 5.5 V
1.65 to 3.6
⎯
±10.0
VIH = VCC − 0.6 V
2.7 to 3.6
⎯
500
⎯
VIL
VIN = VIH or VIL
Output voltage
L-level
VOL
Input leakage current
IIN
3-state output OFF state current
IOZ
Power-off leakage current
IOFF
Quiescent supply current
ICC
Increase in Icc per input
ΔICC
Unit
2.3 to 2.7
⎯
VIH
VOH
Max
⎯
IOH = −100 μA
H-level
Min
1.65 to 2.3 VCC×0.9
Input voltage
L-level
VCC (V)
VIN = VIH or VIL
VIN = 0 to 5.5 V
VIN = VIH or VIL
VOUT = 0 to 5.5 V
4
V
V
μA
2012-02-29
TC74LCX125F/FT/FK
AC Characteristics (Ta = −40 to 85°C)
Characteristics
Propagation delay time
Output enable time
Output disable time
Output to output skew
Note:
Symbol
tpLH
tpHL
tpZL
tPZH
tpLZ
tpHZ
Test Condition
Figure 1, Figure 2
Figure 1, Figure 3
Figure 1, Figure 3
tosLH
(Note)
tosHL
Min
Max
1.8 ± 0.15
⎯
20.0
2.5 ± 0.2
⎯
7.5
2.7
⎯
6.5
3.3 ± 0.3
1.5
6.0
1.8 ± 0.15
⎯
30.0
2.5 ± 0.2
⎯
15.0
2.7
⎯
8.0
3.3 ± 0.3
1.5
7.0
1.8 ± 0.15
⎯
28.0
2.5 ± 0.2
⎯
14.0
2.7
⎯
7.0
3.3 ± 0.3
1.5
6.0
2.7
⎯
⎯
3.3 ± 0.3
⎯
1.0
VCC (V)
Unit
ns
ns
ns
ns
Parameter guaranteed by design.
(tosLH = |tpLHm − tpLHn|, tosHL = |tpHLm − tpHLn|)
Dynamic Switching Characteristics (Ta = 25°C, input: tr = tf = 2.5 ns, CL = 50 pF, RL = 500 Ω)
Characteristics
Symbol
Test Condition
Quiet output maximum dynamic VOL
VOLP
VIH = 3.3 V, VIL = 0 V
Quiet output minimum dynamic VOL
|VOLV|
VIH = 3.3 V, VIL = 0 V
Typ.
Unit
3.3
0.8
V
3.3
0.8
V
Typ.
Unit
VCC (V)
Capacitive Characteristics (Ta = 25°C)
Characteristics
Input capacitance
Output capacitance
Power dissipation capacitance
Note:
Symbol
Test Condition
CIN
⎯
3.3
7
pF
COUT
⎯
3.3
8
pF
3.3
25
pF
CPD
fIN = 10 MHz
VCC (V)
(Note)
CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating
current consumption without load.
Average operating current can be obtained by the equation:
ICC (opr) = CPD･VCC･fIN + ICC/4 (per gate)
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TC74LCX125F/FT/FK
AC Test Circuit
RL
Switch
Parameter
Switch
tpLH, tpHL
Open
6.0 V
RL
Measure
CL
Output
Open
6.0 V or VCC×2
GND
tpLZ, tpZL
@VCC = 3.3±0.3V
@VCC = 2.7V
VCC×2
@VCC = 2.5±0.2V
@VCC=1.8±0.15V
tpHZ, tpZH
GND
Figure 1
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TC74LCX125F/FT/FK
AC Waveform
tr
tf
90%
VIM
Input
(A)
VIH
10%
GND
VOH
Output
(Y)
VOM
tpLH
VOL
tpHL
Figure 2 tpLH, tpHL
tr
tf
90%
VIM
Output Enable
( OE )
VIH
10%
tpLZ
GND
tpZL
VOH
Output (Y)
Low to Off to Low
VOM
tpHZ
VX
VOH
VY
Output (Y)
High to Off to High
VOL
tpZH
VOM
GND
Outputs
enabled
Outputs
disabled
Outputs
enabled
Figure 3 tpLZ, tpHZ, tpZL, tpZH
VCC
Symbol
3.3 ± 0.3 V
2.7V
Input
Output
Load
2.5 ± 0.2 V
1.8 ± 0.15 V
VIH
2.7V
VCC
VCC
VIM
1.5V
VCC/2
VCC/2
tr,tf
2.5ns
2.0ns
2.0ns
VOM
1.5V
VOH/2
VOH/2
VX
VOL +0.3V
VOL +0.15V
VOL +0.15V
VY
VOH -0.3V
VOH -0.15V
VOH -0.15V
CL
50pF
30pF
30pF
RL
500Ω
500Ω
1kΩ
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TC74LCX125F/FT/FK
Package Dimensions
Weight: 0.18 g (typ.)
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TC74LCX125F/FT/FK
Package Dimensions
Weight: 0.06 g (typ.)
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TC74LCX125F/FT/FK
Package Dimensions
Weight: 0.02 g (typ.)
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TC74LCX125F/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. 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
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limitation, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used for
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