DS1649

Features:

High speed capabilities
`Typ 9 ns driving 50 pF
`Typ 30 ns driving 500 pF
TRI-STATE outputs for data bussing
Built-in 15X damping resistor (DS1649DS3649)
Same pin-out as DM8096 and DM74366


Pinout

Specifications

If MilitaryAerospace specified devices are required please contact the National Semiconductor Sales OfficeDistributors for availability and specifications
SupplyVoltage                                                                             7.0V
Logical''1''InputVoltage                                                      7.0V
Logical''0''InputVoltage                                                     -1.5V
StorageTemperatureRange                                        -65to +150
Maximum Power Dissipation* at 25
CavityPackage                                                                      1371mW
MoldedPackage                                                                    1280mW
LeadTemperature(Soldering10sec)                                            300


Description

The DS1649DS3649 and DS1679DS3679 are Hex TRI-STATE MOS drivers with outputs designed to drive large capacitive loads up to 500 pF associated with MOS memory systems PNP input transistors are employed to re-duce input currents allowing the large fan-out to these driv-ers needed in memory systems The circuit has Schottky-clamped transistor logic for minimum propagation delay and TRI-STATE outputs for bus operation.

The DS1649DS3649 has a 15 resistor in series with the outputs to dampen transients caused by the fast-switching output The DS1679DS3679 has a direct low impedance output for use with or without an external resistor.