TC74VHCT9541AFK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74VHCT9541AFK
Octal Universal Schmitt Buffer with 3-State Outputs
The TC74VHCT9541A is an ultra-high-speed octal Schmitt buffer fabricated
TC74VHCT9541AFK
using silicon-gate CMOS technology. The TC74VHC9541A combines low
power consumption of CMOS with Schottky TTL speeds.
The input voltage are compatible with TTL output voltage.
This device may be used as a level converter for interfacing 3.3 V to 5 V
system.
The outputs can be put in the high-impedance state by placing a logic HIGH
on the Enable ( G ) input. The CONT input determines the logical inversion
of data. A logic LOW on the CONT input configures the TC74VHCT9541A
as an inverter; a logic HIGH on the CONT input configures the
Weight
TC74VHCT9541A as a buffer.
VSSOP20-P-0030-0.50
: 0.03 g (typ.)
All the inputs have hysteresis between the positive-going and negativegoing thresholds. Thus the TC74VHCT9541A is capable of squaring up
transitions of slowly changing input signals and provides an improved noise immunity.
Input protection and output circuit ensure that 0 to 5.5 V can be applied to the input and output (Note) pins without regard to the
supply voltage. These structure prevents device destruction due to mismatched supply and input/output voltages such as battery
back up, etc.
Note:
Output in off-state
Features
High speed: tpd = 6.5ns (typ.) at VCC = 5 V
Low power dissipation: ICC = 4 μA (max) at Ta = 25°C
Compatible with TTL inputs
VIL = 0.5 V (max)
VIH = 2.1 V (min)
Power down protection is provided on all inputs.
Balanced propagation delays: tpLH ∼
− tpHL
Input terminals are at the opposite side of Output terminals
Start of commercial production
2010-06
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Toshiba Electronic Devices & Storage Corporation
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2019-01-31
TC74VHCT9541AFK
Pin Assignment
CONT
CONT 1
A1
20
19
2
VCC
G
A1
A2
3
18
Y1
A2
A3
4
17
Y2
A3
A4
5
16
Y3
A4
A5
15
6
Y4
A6
7
14
Y5
A5
A7
8
13
Y6
A6
A8
9
12
Y7
GND 10
11
Y8
A7
A8
19
1
18
2
17
3
G
Y1
Y2
16
4
Y3
5
15
6
14
7
13
8
12
9
11
Y4
Y5
Y6
Y7
Y8
(top view)
Truth Table
Inputs
Outputs
G
CONT
An
Yn
H
X
X
Z
L
L
L
H
L
L
H
L
L
H
L
L
L
H
H
H
X: Don’t care
Z: High impedance
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Toshiba Electronic Devices & Storage Corporation
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TC74VHCT9541AFK
Absolute Maximum Ratings (Note1)
Characteristics
Symbol
Rating
Unit
Supply voltage range
VCC
−0.5 to 7.0
V
DC input voltage
VIN
−0.5 to 7.0
V
DC output voltage
VOUT
Input diode current
IIK
Output diode current
IOK
−0.5 to 7.0
(Note 2)
−0.5 to VCC + 0.5
(Note 3)
−20
±20
V
mA
(Note 4)
mA
DC output current
IOUT
±25
mA
DC VCC/ground current
ICC
±75
mA
Power dissipation
PD
180
mW
Storage temperature
Tstg
−65 to 150
°C
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: Output in off-state
Note 3: High or low state. IOUT absolute maximum rating must be observed.
Note 4: VOUT < GND, VOUT > VCC
Operating Ranges (Note1)
Characteristics
Symbol
Rating
Unit
Supply voltage
VCC
4.5 to 5.5
V
Input voltage
VIN
Output voltage
Operating temperature
0 to 5.5
VOUT
Topr
V
0 to 5.5
(Note 2)
0 to VCC
(Note 3)
−40 to 85
V
°C
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: Output in off-state
Note 3: High or low state.
© 2019
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TC74VHCT9541AFK
Electrical Characteristics
DC Characteristics
Characteristics
Test Condition
Symbol
Positive threshold voltage
VP
―
Negative threshold
voltage
VN
―
Hysteresis voltage
VH
―
Min
Typ
Max
Min
Max
4.5
―
―
1.90
―
1.90
5.5
―
―
2.10
―
2.10
4.5
0.50
―
―
0.50
―
5.5
0.60
―
―
0.60
―
4.5
0.40
―
1.40
0.40
1.40
5.5
0.40
―
1.50
0.40
1.50
V
V
V
IOH = −50 μA
4.5
4.4
4.5
―
4.4
―
4.5
3.94
―
―
3.80
―
IOL = 50 μA
4.5
―
0.0
0.1
―
0.1
IOL = 8 mA
4.5
―
―
0.36
―
0.44
VIN = VIH or VIL
VOUT = VCC or GND
5.5
―
―
±0.25
―
±2.5
μA
IIN
VIN = 5.5 V or GND
0 to 5.5
―
―
±0.1
―
±1.0
μA
ICC
VIN = VCC or GND
5.5
―
―
4.0
―
40.0
μA
ICCT
Per input: VIN = 3.4 V
Other input: VCC or GND
5.5
―
―
1.35
―
1.50
mA
IOPD
VOUT = 5.5 V
0
―
―
0.5
―
5.0
µA
VOH
VIN
= VIH or VIL
Low-level output voltage
VOL
VIN
= VIH or VIL
3-state output off-state
current
IOZ
Input leakage current
Output leakage current
(Power-OFF)
VCC (V)
Unit
IOH = −8 mA
High-level output voltage
Quiescent supply current
Ta =
−40 to 85°C
Ta = 25°C
© 2019
Toshiba Electronic Devices & Storage Corporation
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V
V
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TC74VHCT9541AFK
AC Characteristics (input: tr = tf = 3 ns)
Characteristics
Test Condition
Symbol
VCC (V)
Propagation delay
time
(An-Yn)
tpLH
tpHL
―
Propagation delay
time
(CONT-Yn)
tpLH
tpHL
―
3-state output enable
time
tpZL
tpZH
RL = 1 kΩ
3-state output disable
time
tpLZ
tpHZ
RL = 1 kΩ
Output to output skew
tosHL
tosLH
Input capacitance
Output capacitance
Power dissipation
capacitance (Note 2)
(Note 1)
Ta =
−40 to 85°C
Ta = 25°C
CL (pF)
Min
Typ.
Max
Min
Max
15
―
6.5
8.5
1.0
10.0
50
―
8.6
11.5
1.0
13.0
15
―
8.2
10.5
1.0
12.0
5.0 ± 0.5
Unit
ns
5.0 ± 0.5
ns
50
―
10.8
14.5
1.0
17.0
15
―
6.9
8.5
1.0
10.0
50
―
9.1
12.5
1.0
14.5
5.0 ± 0.5
50
―
7.4
11.5
1.0
13.0
ns
5.0 ± 0.5
50
―
―
1.0
―
1.0
ns
5.0 ± 0.5
ns
CIN
―
―
4
10
―
10
pF
COUT
―
―
9
―
―
―
pF
―
16
―
―
―
pF
CPD
fIN = 1 MHz
Note 1: Parameter guaranteed by design.
tosLH = |tpLHm − tpLHn|, tosHL = |tpHLm − tpHLn|
Note 2: 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 / 8 (per bit)
Noise Characteristics (input: tr = tf = 3 ns)
Characteristics
Test Condition
Symbol
Ta = 25°C
VCC (V)
Typ.
Limit
Unit
Quiet output maximum dynamic VOL
VOLP
CL = 50 pF
5.0
1.0
1.5
V
Quiet output minimum dynamic VOL
VOLV
CL = 50 pF
5.0
−0.3
−1.5
V
Minimum high level dynamic input
voltage
VIHD
CL = 50 pF
5.0
―
2.1
V
Maximum low level dynamic input
voltage
VILD
CL = 50 pF
5.0
―
0.5
V
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Toshiba Electronic Devices & Storage Corporation
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TC74VHCT9541AFK
Package Dimensions
Weight: 0.03 g (typ.)
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TC74VHCT9541AFK
RESTRICTIONS ON PRODUCT USE
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complying with safety standards and for providing adequate designs and safeguards for their hardware, software and systems which
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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
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