TC426
TC427
TC428
1.5A DUAL HIGH-SPEED POWER MOSFET DRIVERS
FEATURES
s
High-Speed Switching (C
L
= 1000pF) ........... 30nsec
s
High Peak Output Current ................................. 1.5A
s
High Output Voltage Swing .................. V
DD
– 25mV
GND + 25mV
s
Low Input Current (Logic "0" or "1") ................ 1
µ
A
s
TTL/CMOS Input Compatible
s
Available in Inverting and Noninverting
Configurations
s
Wide Operating Supply Voltage ............ 4.5V to 18V
s
Current Consumption
— Inputs Low .................................................. 0.4mA
— Inputs High .................................................... 8mA
s
Single Supply Operation
s
Low Output Impedance ........................................ 6Ω
s
Pinout Equivalent of DS0026 and MMH0026
s
Latch-Up Resistant: Withstands > 500mA
Reverse Current
s
ESD Protected ......................................................2kV
PIN CONFIGURATIONS
(DIP and SOIC)
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
7, 5
1
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 25 mV 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 volt-
age. Input current is a low 1µA, making direct interface to
CMOS/bipolar switch-mode power supply control ICs pos-
sible, 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 bipo-
lar DS0026 device. This is important in DC-to-DC con-
verter applications with power efficiency constraints and
high-frequency switch-mode power supply applications. Qui-
escent 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/
27/28, TC4426/27/28, and TC4426A/27A/28A.
2
3
4
5
6
7
TC426
6 V
DD
5 OUT B
8 NC
7 OUT A
INVERTING
2, 4
7, 5
TC427
6 V
DD
5 OUT B
8 NC
7 OUT A
NONINVERTING
ORDERING INFORMATION
Part No.
TC426COA
TC426CPA
TC426EOA
TC426EPA
TC426IJA
TC426MJA
TC427COA
TC427CPA
TC427EOA
TC427EPA
TC427IJA
TC427MJA
TC428COA
TC428CPA
TC428EOA
TC428EPA
TC428IJA
TC428MJA
2
7
Package
8-Pin SOIC
8-Pin PDIP
8-Pin SOIC
8-Pin SOIC
8-Pin CerDIP
8-Pin CerDIP
8-Pin SOIC
8-Pin PDIP
8-Pin SOIC
8-Pin SOIC
8-Pin CerDIP
8-Pin CerDIP
8-Pin SOIC
8-Pin PDIP
8-Pin SOIC
8-Pin SOIC
8-Pin CerDIP
8-Pin CerDIP
Configuration
Inverting
Inverting
Inverting
Complementary
Inverting
Inverting
Noninverting
Noninverting
Noninverting
Complementary
Noninverting
Noninverting
Complementary
Complementary
Complementary
Complementary
Complementary
Complementary
Temperature
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
TC426/7/8-7 10/11/96
TC428
6 V
DD
5 OUT B
4
5
COMPLEMENTARY
NC = NO INTERNAL CONNECTION
FUNCTIONAL BLOCK DIAGRAM
V+
500µA
2.5mA
TC426
TC427
TC428
NONINVERTING
OUTPUT
(TC427)
INPUT
INVERTING
OUTPUT
(TC426)
Note:
The TC428 has one inverting and one noninverting
driver. Ground any unused driver input.
8
TELCOM SEMICONDUCTOR, INC.
4-169
TELCOM [ TELCOM SEMICONDUCTOR, INC ]
