2002 Microchip Technology Inc.
DS21423B-page 1
M
TC4426A/TC4427A/TC4428A
Features
High Peak Output Current 1.5A
Wide Operating Range
- 4.5V to 18V
High Capacitive Load Drive Capability 1000pF
in 25nsec Typ.
Short Delay Times 30nsec Typ.
Matched Rise, Fall and Delay Times
Low Supply Current:
- With Logic "1" Input 1mA
- With Logic "0" Input 100
A
Low Output Impedance 7
Latch-Up Protected: Will Withstand 0.5A Reverse
Current
Input Will Withstand Negative Inputs Up to 5V
ESD Protected 4kV
Pinouts Same as TC426/TC427/TC428
Applications
Device Selection Table
Package Type
General Description
The TC4426A/TC4427A/TC4428A are improved
versions of the earlier TC426/TC427/TC428 family of
buffer/drivers (with which they are pin compatible).
They will not latch up under any conditions within their
power and voltage ratings. They are not subject to
damage when up to 5V of noise spiking (of either
polarity) occurs on the ground pin. They can accept,
without damage or logic upset, up to 500mA of reverse
current (of either polarity) being forced back into their
outputs. All terminals are fully protected against up to
4kV of electrostatic discharge.
As MOSFET drivers, the TC4426A/TC4427A/
TC4428A can easily switch 1000pF gate capacitances
in under 30nsec, and provide low enough impedances
in both the ON and OFF states to ensure the
MOSFET's intended state will not be affected, even by
large transients.
Part Number
Package
Temp. Range
TC4426ACOA
8-Pin SOIC
0C to +70C
TC4426ACPA
8-Pin PDIP
0C to +70C
TC4426AEOA
8-Pin SOIC
-40C to +85C
TC4426AEPA
8-Pin PDIP
-40C to +85C
TC4426AMJA
8-Pin CERDIP
-55C to +125C
TC4427ACOA
8-Pin SOIC
0C to +70C
TC4427ACPA
8-Pin PDIP
0C to +70C
TC4427AEOA
8-Pin SOIC
-40C to +85C
TC4427AEPA
8-Pin PDIP
-40C to +85C
TC4427AMJA
8-Pin CERDIP
-55C to +125C
TC4428ACOA
8-Pin SOIC
0C to +70C
TC4428ACPA
8-Pin PDIP
0C to +70C
TC4428AEOA
8-Pin SOIC
-40C to +85C
TC4428AEPA
8-Pin PDIP
-40C to +85C
TC4428AMJA
8-Pin CERDIP
-55C to +125C
TC4426A
1
2
3
4
NC
5
6
7
8
OUT A
OUT B
NC
IN A
GND
IN B
V
DD
TC4427A
1
2
3
4
NC
5
6
7
8
OUT A
OUT B
NC
IN A
GND
IN B
2,4
7,5
Inverting
2,4
7,5
Noninverting
TC4428A
1
2
3
4
NC
5
6
7
8
OUT A
OUT B
NC
IN A
GND
IN B
V
DD
2
4
Differential
7
5
V
DD
NC = No internal connection.
NOTE: SOIC pinout is identical to DIP.
8-Pin PDIP/SOIC/CERDIP
1.5A Dual High-Speed Power MOSFET Drivers
TC4426A/TC4427A/TC4428A
DS21423B-page 2
2002 Microchip Technology Inc.
Functional Block Diagram
Output
Input
GND
Effective Input
C = 12pF
300mV
Inverting
Outputs
Noninverting
Outputs
V
DD
TC4426A/TC4427A/TC4428A
4.7V
2mA
NOTES: 1. TC4426A has 2 inverting drivers; TC4427A has 2 noninverting drivers.
2. TC4428A has one inverting and one noninverting driver.
3. Ground any unused driver input.
2002 Microchip Technology Inc.
DS21423B-page 3
TC4426A/TC4427A/TC4428A
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Supply Voltage..................................................... +22V
Input Voltage, IN A or IN B
..................................(V
DD
+ 0.3V) to (GND 5V)
Package Power Dissipation (T
A
70C)
PDIP ........................................................ 730mW
CERDIP ................................................... 800mW
SOIC........................................................ 470mW
Package Thermal Resistance
CERDIP R
J-A
........................................ 150C/W
CERDIP R
J-C
......................................... 50C/W
PDIP R
J-A
............................................. 125C/W
PDIP R
J-C
............................................... 42C/W
SOIC R
J-A
............................................ 155C/W
SOIC R
J-C
.............................................. 45C/W
Operating Temperature Range
C Version .........................................0C to +70C
E Version ..................................... -40C to +85C
M Version................................... -55C to +125C
Storage Temperature Range ............. -65C to +150C
*Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device. These
are stress ratings only and functional operation of the device
at these or any other conditions above those indicated in the
operation sections of the specifications is not implied.
Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability.
TC4426A/TC4427A/TC4428A ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Over operating temperature range with 4.5V
V
DD
18V, unless otherwise noted.
Symbol
Parameter
Min
Typ
Max
Units
Test Conditions
Input
V
IH
Logic 1, High Input Voltage
2.4
--
--
V
V
IL
Logic 0, Low Input Voltage
--
--
0.8
V
I
IN
Input Current
-1
-10
--
--
1
10
A
0V
V
IN
V
DD
Output
V
OH
High Output Voltage
V
DD
0.025
--
--
V
DC Test
V
OL
Low Output Voltage
--
--
0.025
V
DC Test
R
O
Output Resistance
--
--
--
7
7
8
9
10
11
I
OUT
= 10mA, V
DD
= 18V, T
A
= +25C
0C
T
A
+70C
-40C
T
A
+85C
I
PK
Peak Output Current
--
1.5
--
A
V
DD
= 18V
I
REV
Latch-Up Protection
Withstand Reverse Current
0.5
--
--
A
Duty cycle
2%, t
300
sec
V
DD
= 18V
Note
1:
Switching times ensured by design.
TC4426A/TC4427A/TC4428A
DS21423B-page 4
2002 Microchip Technology Inc.
Symbol
Parameter
Min
Typ
Max
Units
Test Conditions
Switching Time (Note 1)
t
R
Rise Time
--
--
--
25
27
29
35
40
40
nsec
T
A
= +25C
0C
T
A
+70C
-40C
T
A
+85C, Figure 3-1
t
F
Fall Time
--
--
--
25
27
29
35
40
40
nsec
T
A
= +25C
0C
T
A
+70C
-40C
T
A
+85C, Figure 3-1
t
D1
Delay Time
--
--
--
30
33
35
35
40
45
nsec
T
A
= +25C
0C
T
A
+70C
-40C
T
A
+85C, Figure 3-1
t
D2
Delay Time
--
--
--
30
33
35
35
40
45
nsec
T
A
= +25C
0C
T
A
+70C
-40C
T
A
+85C, Figure 3-1
Power Supply
I
S
Power Supply Current
--
--
1.0
0.1
2.0
0.2
mA
V
IN
= 3V (Both inputs)
V
IN
= 0V (Both inputs), V
DD
= 18V
Note
1:
Switching times ensured by design.
2002 Microchip Technology Inc.
DS21423B-page 5
TC4426A/TC4427A/TC4428A
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
PIN FUNCTION TABLE
Pin No.
(8-Pin PDIP,
SOIC, CERDIP)
Symbol
Description
1
NC
No connect.
2
IN A
3
GND
Ground.
4
IN B
5
OUT B
6
V
DD
7
OUT A
8
NC
No connect.
TC4426A/TC4427A/TC4428A
DS21423B-page 6
2002 Microchip Technology Inc.
3.0
APPLICATIONS INFORMATION
FIGURE 3-1:
SWITCHING TIME TEST CIRCUIT
C
L
= 1000pF
0.1
F
4.7
F
Inverting Driver
Noninverting Driver
Input
V
DD
= 18V
Input
Output
t
D1
t
F
t
R
t
D2
Input: 100kHz,
square wave,
t
RISE
= t
FALL
10nsec
Output
Input
Output
t
D1
t
F
t
R
t
D2
+5V
10%
90%
10%
90%
10%
90%
V
DD
0V
90%
10%
10%
10%
90%
+5V
V
DD
0V
0V
0V
90%
3
2
7
6
4
5
2002 Microchip Technology Inc.
DS21423B-page 7
TC4426A/TC4427A/TC4428A
4.0
TYPICAL CHARACTERISTICS
Note:
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein are
not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
5.0
7.5
10.0
12.5
15.0
17.5
0
20
40
60
80
100
Rise Time vs. Supply Voltage
T
A
= +25
C
V
DD
(V)
C
L
= 2200pF
C
L
= 1500pF
C
L
= 100pF
C
L
C
L
= 470pF
t
RISE
(nsec)
1
2
3
4
5
6
7
8
9
20
70
60
50
40
30
80
90
100
110
Delay Time (nsec)
Effect of Input Amplitude on Delay
V
DD
(V)
C
L
= 1000pF
V
DD
= 10V
t
D1
t
D2
-100
-50
0
50
100
150
24
22
20
18
16
14
26
28
Time (nsec)
Rise and Fall Times vs. Temperature
C
L
= 1000pF
V
DD
= 18V
TEMPERATURE (
C)
t
FALL
t
RISE
5.0
7.5
10.0
12.5
15.0
17.5
0
20
40
60
80
100
Fall Time vs. Supply Voltage
T
A
= +25
C
V
DD
(V)
C
L
= 1500pF
L
C
L
C
L
= 470pF
t
FALL
(nsec)
0
5
10
15
20
50
45
40
35
30
25
20
55
60
Delay Time (nsec)
Propagation Delay Time vs. Supply Voltage
V
DD
(V)
C
L
= 1000pF
t
D1
t
D2
15
20
25
30
35
40
Delay Time (nsec)
-100
-50
0
50
100
150
Propagation Delay Time vs. Temperature
C
L
= 1000pF
V
DD
= 18V
TEMPERATURE (
C)
t
D1
t
D2
TC4426A/TC4427A/TC4428A
DS21423B-page 8
2002 Microchip Technology Inc.
TYPICAL CHARACTERISTICS (CONTINUED)
0
5
10
15
20
25
20
15
10
5
0
30
High-State Output Resistance
V
DD
(V)
R
DS(ON)
(
)
T
A
= 125C
T
A
= 125C
0
500
1000
1500
2000
2500
0
20
10
30
40
50
60
FREQUENCY (KHz)
Supply Current vs. Frequency
I
SU
PPLY
(
mA
)
V
DD
= 18V
C
L
= 2200pF
C
L
= 1500pF
C
L
= 1000pF
C
L
= 100pF
FREQUENCY (KHz)
0
500
1000
1500
2000
2500
70
60
50
40
30
20
10
0
80
Supply Current vs. Frequency
I
SU
PPLY
(mA)
V
DD
= 12V
C
L
= 2200pF
C
L
= 1500pF
C
L
= 1000pF
C
L
= 100pF
0
5
10
15
20
25
20
15
10
5
0
30
Low State Output Resistance
V
DD
(V)
R
DS(ON)
(
)
T
A
= 125C
T
A
= 125C
0
500
1000
1500
2000
2500
0
20
10
30
40
50
60
2MHz
Supply Current vs. Capacitance Load
V
DD
= 18V
I
SUPPLY
(mA)
C
L
(pF)
900MHz
600MHz
200MHz
20MHz
0
500
1000
1500
2000
2500
70
60
50
40
30
20
10
0
80
Supply Current vs.Capacitance Load
I
SUPPLY
(mA)
C
L
(pF)
V
DD
= 12V
900MHz
600MHz
200MHz
20MHz
2MHz
2002 Microchip Technology Inc.
DS21423B-page 9
TC4426A/TC4427A/TC4428A
TYPICAL CHARACTERISTICS (CONTINUED)
0
500
1000
1500
2000
2500
30
25
20
15
10
5
0
35
40
FREQUENCY (KHz)
Supply Current vs. Frequency
I
SU
PPLY
(mA)
V
DD
= 6V
C
L
= 2200pF
C
L
= 1500pF
C
L
= 1000pF
C
L
= 100pF
T
A
= 25
C
BOTH INPUTS = 1
0
5
10
15
20
800
700
600
500
400
200
100
0
300
900
Quiescent Supply Current vs. Voltage
I
QUIESCENT
(mA)
V
DD
(V)
BOTH INPUTS = 0
0
500
1000
1500
2000
2500
30
25
15
10
5
0
35
40
Supply Current vs. Capacitance Load
I
SUPPLY
(mA)
C
L
(pF)
V
DD
= 6V
900MHz
600MHz
200MHz
20MHz
2MHz
2
-100
-50
0
50
100
150
1000
900
800
700
600
400
300
200
100
0
500
1100
Quiescent Supply Current vs. Temperature
I
QUIESCENT
(mA)
TEMPERATURE (
C)
V
DD
= 18V
BOTH INPUTS = 0
BOTH INPUTS = 0
TC4426A/TC4427A/TC4428A
DS21423B-page 10
2002 Microchip Technology Inc.
5.0
PACKAGING INFORMATION
Package marking data not available at this time.
5.1
Package Dimensions
3
MIN.
PIN 1
.260 (6.60)
.240 (6.10)
.045 (1.14)
.030 (0.76)
.070 (1.78)
.040 (1.02)
.400 (10.16)
.348 (8.84)
.200 (5.08)
.140 (3.56)
.150 (3.81)
.115 (2.92)
.110 (2.79)
.090 (2.29)
.022 (0.56)
.015 (0.38)
.040 (1.02)
.020 (0.51)
.015 (0.38)
.008 (0.20)
.310 (7.87)
.290 (7.37)
.400 (10.16)
.310 (7.87)
8-Pin Plastic DIP
Dimensions: inches (mm)
.400 (10.16)
.370 (9.40)
.300 (7.62)
.230 (5.84)
.065 (1.65)
.045 (1.14)
.055 (1.40) MAX.
.020 (0.51) MIN.
PIN 1
.200 (5.08)
.160 (4.06)
.200 (5.08)
.125 (3.18)
.110 (2.79)
.090 (2.29)
.020 (0.51)
.016 (0.41)
.040 (1.02)
.020 (0.51)
.320 (8.13)
.290 (7.37)
.150 (3.81)
MIN.
3
MIN.
8-Pin CDIP (Narrow)
.015 (0.38)
.008 (0.20)
.400 (10.16)
.320 (8.13)
Dimensions: inches (mm)
2002 Microchip Technology Inc.
DS21423B-page 11
TC4426A/TC4427A/TC4428A
Package Dimensions (Continued)
.050 (1.27) TYP.
8
MAX.
PIN 1
.244 (6.20)
.228 (5.79)
.157 (3.99)
.150 (3.81)
.197 (5.00)
.189 (4.80)
.020 (0.51)
.013 (0.33)
.010 (0.25)
.004 (0.10)
.069 (1.75)
.053 (1.35)
.010 (0.25)
.007 (0.18)
.050 (1.27)
.016 (0.40)
.
8-Pin SOIC
Dimensions: inches (mm)
TC4426A/TC4427A/TC4428A
DS21423B-page 12
2002 Microchip Technology Inc.
NOTES:
2002 Microchip Technology Inc.
DS21423B-page 13
TC4426A/TC4427A/TC4428A
Sales and Support
Data Sheets
Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recom-
mended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following:
1.
Your local Microchip sales office
2.
The Microchip Corporate Literature Center U.S. FAX: (480) 792-7277
3.
The Microchip Worldwide Site (www.microchip.com)
Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using.
New Customer Notification System
Register on our web site (www.microchip.com/cn) to receive the most current information on our products.
TC4426A/TC4427A/TC4428A
DS21423B-page 14
2002 Microchip Technology Inc.
NOTES:
2002 Microchip Technology Inc.
DS21423B-page 15
TC4426A/TC4427A/TC4428A
Information contained in this publication regarding device
applications and the like is intended through suggestion only
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
No representation or warranty is given and no liability is
assumed by Microchip Technology Incorporated with respect
to the accuracy or use of such information, or infringement of
patents or other intellectual property rights arising from such
use or otherwise. Use of Microchip's products as critical com-
ponents in life support systems is not authorized except with
express written approval by Microchip. No licenses are con-
veyed, implicitly or otherwise, under any intellectual property
rights.
Trademarks
The Microchip name and logo, the Microchip logo, FilterLab,
K
EE
L
OQ
, microID, MPLAB, PIC, PICmicro, PICMASTER,
PICSTART, PRO MATE, SEEVAL and The Embedded Control
Solutions Company are registered trademarks of Microchip Tech-
nology Incorporated in the U.S.A. and other countries.
dsPIC, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB,
In-Circuit Serial Programming, ICSP, ICEPIC, microPort,
Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM,
MXDEV, PICC, PICDEM, PICDEM.net, rfPIC, Select Mode
and Total Endurance are trademarks of Microchip Technology
Incorporated in the U.S.A.
Serialized Quick Turn Programming (SQTP) is a service mark
of Microchip Technology Incorporated in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
2002, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received QS-9000 quality system
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and Mountain View, California in March 2002.
The Company's quality system processes and
procedures are QS-9000 compliant for its
PICmicro
8-bit MCUs, K
EE
L
OQ
code hopping
devices, Serial EEPROMs, microperipherals,
non-volatile memory and analog products. In
addition, Microchip's quality system for the
design and manufacture of development
systems is ISO 9001 certified.
DS21423B-page 16
2002 Microchip Technology Inc.
M
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Kwai Fong, N.T., Hong Kong
Tel: 852-2401-1200 Fax: 852-2401-3431
India
Microchip Technology Inc.
India Liaison Office
Divyasree Chambers
1 Floor, Wing A (A3/A4)
No. 11, O'Shaugnessey Road
Bangalore, 560 025, India
Tel: 91-80-2290061 Fax: 91-80-2290062
Japan
Microchip Technology Japan K.K.
Benex S-1 6F
3-18-20, Shinyokohama
Kohoku-Ku, Yokohama-shi
Kanagawa, 222-0033, Japan
Tel: 81-45-471- 6166 Fax: 81-45-471-6122
Korea
Microchip Technology Korea
168-1, Youngbo Bldg. 3 Floor
Samsung-Dong, Kangnam-Ku
Seoul, Korea 135-882
Tel: 82-2-554-7200 Fax: 82-2-558-5934
Singapore
Microchip Technology Singapore Pte Ltd.
200 Middle Road
#07-02 Prime Centre
Singapore, 188980
Tel: 65-6334-8870 Fax: 65-6334-8850
Taiwan
Microchip Technology Taiwan
11F-3, No. 207
Tung Hua North Road
Taipei, 105, Taiwan
Tel: 886-2-2717-7175 Fax: 886-2-2545-0139
EUROPE
Denmark
Microchip Technology Nordic ApS
Regus Business Centre
Lautrup hoj 1-3
Ballerup DK-2750 Denmark
Tel: 45 4420 9895 Fax: 45 4420 9910
France
Microchip Technology SARL
Parc d'Activite du Moulin de Massy
43 Rue du Saule Trapu
Batiment A - ler Etage
91300 Massy, France
Tel: 33-1-69-53-63-20 Fax: 33-1-69-30-90-79
Germany
Microchip Technology GmbH
Gustav-Heinemann Ring 125
D-81739 Munich, Germany
Tel: 49-89-627-144 0 Fax: 49-89-627-144-44
Italy
Microchip Technology SRL
Centro Direzionale Colleoni
Palazzo Taurus 1 V. Le Colleoni 1
20041 Agrate Brianza
Milan, Italy
Tel: 39-039-65791-1 Fax: 39-039-6899883
United Kingdom
Arizona Microchip Technology Ltd.
505 Eskdale Road
Winnersh Triangle
Wokingham
Berkshire, England RG41 5TU
Tel: 44 118 921 5869 Fax: 44-118 921-5820
03/01/02
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