Obsolete
DS1631 DS3631 DS1632 DS3632 DS1633 DS3633 DS1634 DS3634 CMOS Dual Peripheral Drivers
July 1992
DS1631 DS3631...
Obsolete
DS1631 DS3631 DS1632 DS3632 DS1633 DS3633 DS1634 DS3634
CMOS Dual Peripheral Drivers
July 1992
DS1631 DS3631 DS1632 DS3632 DS1633 DS3633 DS1634 DS3634
CMOS Dual Peripheral Drivers
General Description
The DS1631 series of dual peripheral drivers was designed to be a universal set of interface components for
CMOS circuits
Each circuit has
CMOS compatible inputs with thresholds that track as a function of VCC (approximately VCC) The inputs are PNPs providing the high impedance necessary for interfacing with
CMOS
Outputs have high
voltage capability minimum breakdown
voltage is 56V at 250 mA
The outputs are Darlington connected transistors This allows high current operation (300 mA max) at low internal VCC current levels since base drive for the output transistor is obtained from the load in proportion to the required loading conditions This is essential in order to minimize loading on the
CMOS logic supply
Typical VCC e 5V power is 28 mW with both outputs ON VCC operating range is 4 5V to 15V The circuit also features output transistor protection if the VCC supply is lost by forcing the output into the high impe-
dance OFF state with the same breakdown levels as when VCC was applied Pin-outs are the same as the respective logic functions found in the following popular series of circuits DS75451 DS75461 This feature allows direct conversion of present systems to the MM74C
CMOS family and DS1631 series circuits with great power savings
The DS1631 series is also TTL c...