M
Features
TC426/TC427/TC428
Package Type
8-Pin PDIP/SOIC/CERDIP
NC 1
IN A 2
GND 3
IN B 4
NC 1
IN A 2
GND 3
IN B 4
NC 1
IN A 2
GND 3
IN B 4
8 NC
7 OUT A
2, 4
Inverting
7, 5
1.5A Dual High-Speed Power MOSFET Drivers
• High-Speed Switching (C
L
= 1000pF): 30nsec
• High Peak Output Current: 1.5A
• High Output Voltage Swing
- V
DD
-25mV
- GND +25mV
• Low Input Current (Logic "0" or "1"): 1µA
• TTL/CMOS Input Compatible
• Available in Inverting and Noninverting
Configurations
• Wide Operating Supply Voltage
- 4.5V to 18V
• Current Consumption
- Inputs Low – 0.4mA
- Inputs High – 8mA
• Single Supply Operation
• Low Output Impedance: 6Ω
• Pinout Equivalent of DS0026 and MMH0026
• Latch-Up Resistant: Withstands > 500mA
Reverse Current
• ESD Protected: 2kV
TC426
6 V
DD
5 OUT B
8 NC
7 OUT A
2, 4
7, 5
TC427
6 V
DD
5 OUT B
8 NC
7 OUT A
Noninverting
2
7
TC428
6 V
DD
5 OUT B
4
5
Complementary
NC = No internal connection
General Description
The TC426/TC427/TC428 are dual CMOS high-speed
drivers. A TTL/CMOS input voltage level is translated
into a rail-to-rail output voltage level swing. The CMOS
output is within 25mV of ground or positive supply.
The low impedance, high-current driver outputs swing
a 1000pF load 18V in 30nsec. The unique current and
voltage drive qualities make the TC426/TC427/TC428
ideal power MOSFET drivers, line drivers, and DC-to-
DC converter building blocks.
Input logic signals may equal the power supply voltage.
Input current is a low 1µA, making direct interface
to CMOS/bipolar switch-mode power supply control
ICs possible, as well as open-collector analog
comparators.
Quiescent power supply current is 8mA maximum. The
TC426 requires 1/5 the current of the pin-compatible
bipolar DS0026 device. This is important in DC-to-DC
converter applications with power efficiency constraints
and high-frequency switch-mode power supply
applications. Quiescent current is typically 6mA when
driving a 1000pF load 18V at 100kHz.
The inverting TC426 driver is pin-compatible with the
bipolar DS0026 and MMH0026 devices. The TC427 is
noninverting; the TC428 contains an inverting and non-
inverting driver.
Other pin compatible driver families are the TC1426/
TC1427/TC1428,
TC4426/TC4427/TC4428
and
TC4426A/TC4427A/TC4428A.
Applications
•
•
•
•
Switch Mode Power Supplies
Pulse Transformer Drive
Clock Line Driver
Coax Cable Driver
Device Selection Table
Part
Number
TC426COA
TC426CPA
TC426EOA
TC426EPA
TC426IJA
TC426MJA
TC427COA
TC427CPA
TC427EOA
TC427EPA
TC427IJA
TC427MJA
TC428COA
TC428CPA
TC428EOA
TC428EPA
TC428IJA
TC428MJA
Package
8-Pin SOIC
8-Pin PDIP
8-Pin SOIC
8-Pin PDIP
8-Pin CERDIP
8-Pin CERDIP
8-Pin SOIC
8-Pin PDIP
8-Pin SOIC
8-Pin PDIP
8-Pin CERDIP
8-Pin CERDIP
8-Pin SOIC
8-Pin PDIP
8-Pin SOIC
8-Pin PDIP
8-Pin CERDIP
8-Pin CERDIP
Configuration
Inverting
Inverting
Inverting
Inverting
Inverting
Inverting
Noninverting
Noninverting
Noninverting
Noninverting
Noninverting
Noninverting
Complementary
Complementary
Complementary
Complementary
Complementary
Complementary
Temp.
Range
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-25°C to +85°C
-55°C to +125°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-25°C to +85°C
-55°C to +125°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-25°C to +85°C
-55°C to +125°C
2002 Microchip Technology Inc.
DS21415B-page 1
TC426/TC427/TC428
Functional Block Diagram
V+
≈500
µ
A
≈2.5mA
TC426
TC427
TC428
Noninverting
Output
(TC427)
Input
GND
NOTE:
TC428 has one inverting and one noninverting driver.
Ground any unused driver input.
Inverting
Output
(TC426)
DS21415B-page 2
2002 Microchip Technology Inc.
TC426/TC427/TC428
1.0
ELECTRICAL
CHARACTERISTICS
*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.
Absolute Maximum Ratings*
Supply Voltage..................................................... +20V
Input Voltage, Any Terminal
................................... V
DD
+ 0.3V to GND – 0.3V
Power Dissipation (T
A
≤
70°C)
PDIP ........................................................ 730mW
CERDIP ................................................... 800mW
SOIC........................................................ 470mW
Derating Factor
PDIP ....................................................... 8mW/°C
CERDIP ............................................... 6.4mW/°C
SOIC....................................................... 4mW/°C
Operating Temperature Range
C Version .........................................0°C to +70°C
I Version....................................... -25°C to +85°C
E Version ..................................... -40°C to +85°C
M Version................................... -55°C to +125°C
Storage Temperature Range ............. -65°C to +150°C
TC426/TC427/TC428 ELECTRICAL SPECIFICATIONS
Electrical Characteristics:
T
A
= +25°C with 4.5V
≤
V
DD
≤
18V, unless otherwise noted.
Symbol
Input
V
IH
V
IL
I
IN
Output
V
OH
V
OL
R
OH
R
OL
I
PK
t
R
t
F
t
D1
t
D2
I
S
Note
1:
Parameter
Min
Typ
Max
Units
Test Conditions
Logic 1, High Input Voltage
Logic 0, Low Input Voltage
Input Current
High Output Voltage
Low Output Voltage
High Output Resistance
Low Output Resistance
Peak Output Current
Rise Time
Fall Time
Delay Time
Delay Time
Power Supply Current
Switching times ensured by design.
2.4
—
-1
V
DD
– 0.025
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
10
6
1.5
—
—
—
—
—
—
—
0.8
1
—
0.025
15
10
—
30
30
50
75
8
0.4
V
V
µ
A
0V
≤
V
IN
≤
V
DD
V
V
Ω
Ω
I
OUT
= 10mA, V
DD
= 18V
I
OUT
= 10mA, V
DD
= 18V
A
nsec
nsec
nsec
nsec
mA
Figure 3-1, Figure 3-2
Figure 3-1, Figure 3-2
Figure 3-1, Figure 3-2
Figure 3-1, Figure 3-2
V
IN
= 3V (Both Inputs)
V
IN
= 0V (Both Inputs)
Switching Time
(Note 1)
Power Supply
2002 Microchip Technology Inc.
DS21415B-page 3
TC426/TC427/TC428
TC426/TC427/TC428 ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics:
Over operating temperature range with 4.5V
≤
V
DD
≤
18V, unless otherwise noted.
Input
V
IH
V
IL
I
IN
Output
V
OH
V
OL
R
OH
R
OL
t
R
t
F
t
D1
t
D2
I
S
Note
1:
Logic 1, High Input Voltage
Logic 0, Low Input Voltage
Input Current
High Output Voltage
Low Output Voltage
High Output Resistance
Low Output Resistance
Rise Time
Fall Time
Delay Time
Delay Time
Power Supply Current
Switching times ensured by design.
2.4
—
-10
V
DD
– 0.025
—
—
—
—
—
—
—
—
—
—
—
—
—
—
13
8
—
—
—
—
—
—
—
0.8
10
—
0.025
20
15
60
60
75
120
12
0.6
V
V
µ
A
0V
≤
V
IN
≤
V
DD
V
V
Ω
Ω
I
OUT
= 10mA, V
DD
= 18V
I
OUT
= 10mA, V
DD
= 18V
Figure 3-1, Figure 3-2
Figure 3-1, Figure 3-2
Figure 3-1, Figure 3-2
Figure 3-1, Figure 3-2
V
IN
= 3V (Both Inputs)
V
IN
= 0V (Both Inputs)
Switching Time
(Note 1)
nsec
nsec
nsec
nsec
mA
Power Supply
DS21415B-page 4
2002 Microchip Technology Inc.
TC426/TC427/TC428
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
Pin No.
(8-Pin PDIP,
SOIC, CERDIP)
1
2
3
4
5
6
7
8
PIN FUNCTION TABLE
Symbol
NC
IN A
GND
IN B
OUT B
V
DD
OUT A
NC
No Internal Connection.
Control Input A, TTL/CMOS compatible logic input.
Ground.
Control Input B, TTL/CMOS compatible logic input.
CMOS totem-pole output.
Supply input, 4.5V to 18V.
CMOS totem-pole output.
No internal Connection.
Description
2002 Microchip Technology Inc.
DS21415B-page 5
