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
µ
A
• Low Output Impedance – 7
Ω
• 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
0°C to +70°C
TC4426ACPA
8-Pin PDIP
0°C to +70°C
TC4426AEOA
8-Pin SOIC
-40°C to +85°C
TC4426AEPA
8-Pin PDIP
-40°C to +85°C
TC4426AMJA
8-Pin CERDIP
-55°C to +125°C
TC4427ACOA
8-Pin SOIC
0°C to +70°C
TC4427ACPA
8-Pin PDIP
0°C to +70°C
TC4427AEOA
8-Pin SOIC
-40°C to +85°C
TC4427AEPA
8-Pin PDIP
-40°C to +85°C
TC4427AMJA
8-Pin CERDIP
-55°C to +125°C
TC4428ACOA
8-Pin SOIC
0°C to +70°C
TC4428ACPA
8-Pin PDIP
0°C to +70°C
TC4428AEOA
8-Pin SOIC
-40°C to +85°C
TC4428AEPA
8-Pin PDIP
-40°C to +85°C
TC4428AMJA
8-Pin CERDIP
-55°C to +125°C
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
≤
70°C)
PDIP ........................................................ 730mW
CERDIP ................................................... 800mW
SOIC........................................................ 470mW
Package Thermal Resistance
CERDIP R
θ
J-A
........................................ 150°C/W
CERDIP R
θ
J-C
......................................... 50°C/W
PDIP R
θ
J-A
............................................. 125°C/W
PDIP R
θ
J-C
............................................... 42°C/W
SOIC R
θ
J-A
............................................ 155°C/W
SOIC R
θ
J-C
.............................................. 45°C/W
Operating Temperature Range
C Version .........................................0°C to +70°C
E Version ..................................... -40°C to +85°C
M Version................................... -55°C to +125°C
Storage Temperature Range ............. -65°C to +150°C
*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
µ
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
Ω
I
OUT
= 10mA, V
DD
= 18V, T
A
= +25°C
0°C
≤
T
A
≤
+70°C
-40°C
≤
T
A
≤
+85°C
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
µ
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
= +25°C
0°C
≤
T
A
≤
+70°C
-40°C
≤
T
A
≤
+85°C, Figure 3-1
t
F
Fall Time
—
—
—
25
27
29
35
40
40
nsec
T
A
= +25°C
0°C
≤
T
A
≤
+70°C
-40°C
≤
T
A
≤
+85°C, Figure 3-1
t
D1
Delay Time
—
—
—
30
33
35
35
40
45
nsec
T
A
= +25°C
0°C
≤
T
A
≤
+70°C
-40°C
≤
T
A
≤
+85°C, Figure 3-1
t
D2
Delay Time
—
—
—
30
33
35
35
40
45
nsec
T
A
= +25°C
0°C
≤
T
A
≤
+70°C
-40°C
≤
T
A
≤
+85°C, 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
µF
4.7
µF
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)
(
Ω
)
T
A
= 125°C
T
A
= 125°C
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)
(
Ω
)
T
A
= 125°C
T
A
= 125°C
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)
<