TC426/27/28 Data Sheet
http://www.microchip.com/stellent/images/mchpsiteimages/dwnfolder.gifTC426/27/28 Data SheetThe 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 1A, 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 TC1426/27/28, TC4426/27/28, and TC4426A/27A/28A.
Parameter NameValue
PowerDual
Peak Output Current (mA)1500
Output Resistance (RH/RL)(Max. @ 25°C)15/10
Max. Supply Voltage (V)18
Input/Output Delay (td1, td2)1 (ns)50/75
ConfigurationInverting
DescriptionLow-Side MOSFET Drivers, 1.5A Peak Output Current
Operating Temp. Range (°C)-40 to 85
Features
High-Speed Switching
(CL = 1000pF)............................30nsec
High Peak Output Current...............1.5A
High Output Voltage Swing: VDD – 25mV GND +25mV
Low Input Current
(Logic "0" or "1") ......1mA
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 .................6W
Pinout Equivalent of DS0026 and MMH0026
Latch-Up Resistant: Withstands > 500mA Reverse Current
ESD Protected .............................. 2kV
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